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Nanostructured Materials For Visible Light Photocatalysis

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Nanostructured Materials for Visible Light Photocatalysis

Nanostructured Materials for Visible Light Photocatalysis Book
Author : Arpan Kumar Nayak,Niroj Kumar Sahu
Publisher : Elsevier
Release : 2021-10-10
ISBN : 0128230509
Language : En, Es, Fr & De

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Book Description :

Nanostructured Materials for Visible Light Photocatalysis describes the various methods of synthesizing different classes of nanostructured materials that are used as photocatalysts for the degradation of organic hazardous dyes under visible light irradiation. The first three chapters include a general introduction, basic principles, mechanisms, and synthesis methods of nanomaterials for visible light photocatalysis. Recent advances in carbon, bismuth series, transition metal oxide and chalcogenides-based nanostructured materials for visible light photocatalysis are discussed. Later chapters describe the role of phosphides, nitrides, and rare earth-based nanostructured-based materials in visible light photocatalysis, as well as the characteristics, synthesis, and fabrication of photocatalysts. The role of doping, composites, defects, different facets, morphology of nanostructured materials and green technology for efficient dye removal under visible-light irradiation are also explored. Other topics covered include large-scale production of nanostructured materials, the challenges in present photocatalytic research, the future scope of nanostructured materials regarding environmental hazard remediation under visible light, and solar light harvesting. This book is a valuable reference to researchers and enables them to learn more about designing advanced nanostructured materials for wastewater treatment and visible-light irradiation. Covers all the recent developments of nanostructured photocatalytic materials Provides a clear overview of the mechanism of visible light photocatalysis and the controlled synthesis of nanostructured materials Assesses the major challenges of creating visible light photocatalysis systems at the nanoscale

Synthesis and Characterization of Some Nanostructured Materials for Visible Light driven Photo Processes

Synthesis and Characterization of Some Nanostructured Materials for Visible Light driven Photo Processes Book
Author : Rania Elhadi Adam
Publisher : Linköping University Electronic Press
Release : 2020-03-18
ISBN : 9179298788
Language : En, Es, Fr & De

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Book Description :

Nanostructured materials for visible light driven photo-processes such as photodegradation of organic pollutants and photoelectrochemical (PEC) water oxidation for hydrogen production are very attractive because of the positive impact on the environment. Metal oxides-based nanostructures are widely used in these photoprocesses due to their unique properties. But single nanostructured metal oxide material might suffer from low efficiency and instability in aqueous solutions under visible light. These facts make it important to have an efficient and reliable nanocomposite for the photo-processes. The combination of different nanomaterials to form a composite configuration can produce a material with new properties. The new properties which are due to the synergetic effect, are a combination of the properties of all the counterparts of the nanocomposite. Zinc oxides (ZnO) have unique optical and electrical properties which grant it to be used in optoelectronics, sensors, solar cells, nanogenerators, and photocatalysis activities. Although ZnO absorbs visible light from the sun due to the deep level band, it mainly absorbs ultraviolet wavelengths which constitute a small portion of the whole solar spectrum range. Also, ZnO has a problem with the high recombination rate of the photogenerated electrons. These problems might reduce its applicability to the photo-process. Therefore, our aim is to develop and investigate different nanocomposites materials based on the ZnO nanostructures for the enhancement of photocatalysis processes using the visible solar light as a green source of energy. Two photo-processes were applied to examine the developed nanocomposites through photocatalysis: (1) the photodegradation of organic dyes, (2) PEC water splitting. In the first photo-process, we used the ZnO nanoparticles (NPs), Magnesium (Mg)-doped ZnO NPs, and plasmonic ZnO/graphene-based nanocomposite for the decomposition of some organic dyes that have been used in industries. For the second photo-process, ZnO photoelectrode composite with different silver-based semiconductors to enhance the performance of the ZnO photoelectrode was used for PEC reaction analysis to perform water splitting. The characterization and photocatalysis experiment results showed remarkable enhancement in the photocatalysis efficiency of the synthesized nanocomposites. The observed improved properties of the ZnO are due to the synergetic effects are caused by the addition of the other nanomaterials. Hence, the present thesis attends to the synthesis and characterization of some nanostructured materials composite with ZnO that are promising candidates for visible light-driven photo-processes.

Visible Light Active Photocatalysis

Visible Light Active Photocatalysis Book
Author : Srabanti Ghosh
Publisher : John Wiley & Sons
Release : 2018-06-11
ISBN : 3527342931
Language : En, Es, Fr & De

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Book Description :

A comprehensive and timely overview of this important and hot topic, with special emphasis placed on environmental applications and the potential for solar light harvesting. Following introductory chapters on environmental photocatalysis, water splitting, and applications in synthetic chemistry, further chapters focus on the synthesis and design of photocatalysts, solar energy conversion, and such environmental aspects as the removal of water pollutants, photocatalytic conversion of CO2. Besides metal oxide-based photocatalysts, the authors cover other relevant material classes including carbon-based nanomaterials and novel hybrid materials. Chapters on mechanistic aspects, computational modeling of photocatalysis and Challenges and perspectives of solar reactor design for industrial applications complete this unique survey of the subject. With its in-depth discussions ranging from a comprehensive understanding to the engineering of materials and applied devices, this is an invaluable resource for a range of disciplines.

Nanostructured Photocatalysts

Nanostructured Photocatalysts Book
Author : Rabah Boukherroub,Satishchandra B. OGALE,Neil Robertson
Publisher : Elsevier
Release : 2020-06-06
ISBN : 012817837X
Language : En, Es, Fr & De

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Book Description :

Nanostructured Photocatalysts: From Materials to Applications in Solar Fuels and Environmental Remediation addresses the different properties of nanomaterials-based heterogeneous photocatalysis. Heterogeneous nanostructured photocatalysis represents an interesting and viable technique to address issues of climate change and global energy supply. Sustainable hydrogen (H2) fuel production from water via semiconductor photocatalysis, driven by solar energy, is regarded as a viable and sustainable solution to address increasing energy and environmental issues. Similarly, photocatalytic reduction of CO2 with water for the production of hydrocarbons could also be a viable solution. Sections cover band gap tuning, high surface area, the short diffusion path of carriers, and more. Introduces the utilization of nanostructured materials in heterogeneous photocatalysis for hydrogen fuel production via water splitting Explains preparation techniques for different nanomaterials and hybrid nanocomposites, enabling improved sunlight absorption efficiency and enhanced charge separation Assesses the challenges that need to be addressed before this technology can be practically implemented, particularly of identifying cost-effective nanophotocatalysts

Development and Characterization of Silica and Titania Based Nanostructured Materials for the Removal of Indoor and Outdoor Air Pollutants

Development and Characterization of Silica and Titania Based Nanostructured Materials for the Removal of Indoor and Outdoor Air Pollutants Book
Author : Thelge Manindu Nirasha Peiris
Publisher : Unknown
Release : 2012
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Solar energy driven catalytic systems have gained popularity in environmental remediation recently. Various photocatalytic systems have been reported in this regard and most of the photocatalysts are based on well-known semiconducting material, Titanium Dioxide, while some are based on other materials such as Silicon Dioxide and various Zeolites. However, in titania based photocatalysts, titania is actively involved in the catalytic mechanism by absorbing light and generating exitons. Because of this vast popularity of titania in the field of photocatalysis it is believed that photocatalysis mainly occurs via non-localized mechanisms and semiconductors are extremely important. Even though it is still rare, photocatalysis could be localized and possible without use of a semiconductor as well. Thus, to support localized photocatalytic systems, and to compare the activity to titania based systems, degradation of organic air pollutants by nanostructured silica, titania and mixed silica titania systems were studied. New materials were prepared using two different approaches, precipitation technique (xerogel) and aerogel preparation technique. The prepared xerogel samples were doped with both metal (silver) and non-metals (carbon and sulfur) and aerogel samples were loaded with Chromium, Cobalt and Vanadium separately, in order to achieve visible light photocatalytic activity. Characterization studies of the materials were carried out using Nova BET analysis, DR UV-vis spectrometry, powder X-ray diffraction, X-ray photoelectron Spectroscopy, FT-IR spectroscopy, Transmission Electron Microscopy, etc. Kinetics of the catalytic activities was studied using a Shimadzu GCMS-QP 5000 instrument using a closed glass reactor. All the experiments were carried out in gaseous phase using acetaldehyde as the model pollutant. Kinetic results suggest that chromium doped silica systems are good UV and visible light active photocatalysts. This is a good example for a localized photocatalytic activity. In contrast, our xerogel system shows comparatively high visible light photocatalytic activity for the titania based system, showing the importance of non-localized nature of photocatalysis. The Cobalt doped silica system shows interesting dark catalytic activity towards acetaldehyde and several other pollutants. Thus, in summary, based on the different activities we observed during our studies these materials could be successfully used to improve the quality of both indoor and outdoor air.

Nanostructured Materials for Environmental Applications

Nanostructured Materials for Environmental Applications Book
Author : Subramanian Balakumar,Valérie Keller,M. V. Shankar
Publisher : Springer Nature
Release : 2021
ISBN : 3030720764
Language : En, Es, Fr & De

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Book Description :

This book discusses how nanostructured materials play a key role in helping address environmental challenges. Employing nanostructured materials in catalysis can increase the efficient decomposition of toxic pollutants in air, water, and soil. This multidisciplinary book discusses the most promising nanostructured materials made-up of metals, metal oxides, metal chalcogenides, multi-metal oxides, carbon nanostructures, and hybrid materials that can address environmental remediation. It provides a well-referenced introduction to newcomers from allied disciplines and will be valuable to researchers in academia, industry, and government working on solutions to environmental problems. Provides a state-of-the-art review of key concepts of nanostructured materials in environmental science Discusses the most promising nanostructured materials that can assist with environmental remediation Illustrates challenges and opportunities for development, experimental design, methodology, and interpretation of results.

Nanostructured Materials for Treating Aquatic Pollution

Nanostructured Materials for Treating Aquatic Pollution Book
Author : Gil Alberto Batista Gonçalves,Paula Marques
Publisher : Springer Nature
Release : 2019-11-21
ISBN : 3030337456
Language : En, Es, Fr & De

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Book Description :

This book report the advances in the synthesis of new nanomaterials for the remediation of natural waters, groundwaters, and wastewaters. The authors describe synthetic routes for the assembly of different nanomaterials for the removal of contaminants by adsorption, catalytic degradation, and antibacterial activity. The hazardous effects of nanomaterials in aquatic ecosystems are discussed. This book presents the trends in the development of advanced technologies available in the market based on nanomaterials for more efficient water remediation. The authors also discuss sustainable management of water resources according to the new technologies developed and the improved efficiency of remediation processes.

Hierarchical Micro Nanostructured Materials

Hierarchical Micro Nanostructured Materials Book
Author : Weiping Cai,Guotao Duan,Yue Li
Publisher : CRC Press
Release : 2014-07-01
ISBN : 1439876835
Language : En, Es, Fr & De

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Book Description :

Hierarchical Micro/Nanostructured Materials: Fabrication, Properties, and Applications presents the latest fabrication, properties, and applications of hierarchical micro/nanostructured materials in two sections-powders and arrays. After a general introduction to hierarchical micro/nanostructured materials, the first section begins with a detailed

Nanostructured Materials for Next Generation Energy Storage and Conversion

Nanostructured Materials for Next Generation Energy Storage and Conversion Book
Author : Ying-Pin Chen,Sajid Bashir,Jingbo Louise Liu
Publisher : Springer
Release : 2017-05-31
ISBN : 3662535149
Language : En, Es, Fr & De

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Book Description :

Volume 1 of a 4-volume series is a concise, authoritative and an eminently readable and enjoyable experience related to hydrogen production, storage and usage for portable and stationary power. Although the major focus is on hydrogen, discussion of fossil fuels and nuclear power is also presented where appropriate. This monograph is written by recognized experts in the field, and is both timely and appropriate as this decade will see application of hydrogen as an energy carrier, for example in transportation sector. The world's reliance on fossil fuels is due to the ever growing need for energy to sustain life and on-going progress; however exploitation also brings consequences such as emission of carbon, nitrogen and sulfur dioxides into the atmosphere. The collective influence of these photochemical gases is production of acid rain and an alternation of global temperatures, leading to record high temperatures in many parts of the world. The fossil fuel is unsustainable and thus there is a critical need for alternative sustainable energy resources. One universal energy carrier is hydrogen, which is the focus of this volume. This book is suitable for those who work in the energy field as technical experts, including engineers and scientists, as well as managers, policy and decision-makers, environmentalists and consultants. Students and practitioners such as lectures, teachers, legislators and their aids in the field of energy will find this book invaluable and a practical handbook or guide in the field of sustainable energy with emphasis on hydrogen as an energy carrier.

Chalcogenide Based Nanomaterials as Photocatalysts

Chalcogenide Based Nanomaterials as Photocatalysts Book
Author : Mohammad Mansoob Khan
Publisher : Elsevier
Release : 2021-04-07
ISBN : 0128209178
Language : En, Es, Fr & De

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Book Description :

Chalcogenide-Based Nanomaterials as Photocatalysts deals with the different types of chalcogenide-based photocatalytic reactions, covering the fundamental concepts of photocatalytic reactions involving chalcogenides for a range of energy and environmental applications. Sections focus on nanostructure control, synthesis methods, activity enhancement strategies, environmental applications, and perspectives of chalcogenide-based nanomaterials. The book offers guidelines for designing new chalcogenide-based nanoscale photocatalysts at low cost and high efficiency for efficient utilization of solar energy in the areas of energy production and environment remediation. Provides information on the development of novel chalcogenide-based nanomaterials Outlines the fundamentals of chalcogenides-based photocatalysis Includes techniques for heterogeneous catalysis based on chalcogenide-based nanomaterials

Nanocomposites for Visible Light induced Photocatalysis

Nanocomposites for Visible Light induced Photocatalysis Book
Author : Mohammad Mansoob Khan,Debabrata Pradhan,Youngku Sohn
Publisher : Springer
Release : 2017-09-07
ISBN : 3319624466
Language : En, Es, Fr & De

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Book Description :

This book details the chemistry of visible light-induced photocatalysis using different classes of nanocomposites. Starting with a general introduction and explanation of basic principles and mechanisms of (visible) light-induced photocatalysis in the first two chapters (not omitting a plaidoyer for furthering research and development in this promising field), the following chapters detail the different types and classes of nanocomposites currently used in light-induced photocatalytic applications, including e.g. metal and mixed metal-oxide nanoparticles and –composites, nanoporous materials, polymeric and carbon-based nanocomposites. They explain the characteristics and importance of the different types of nanocomposites, as well as their synthesis and fabrication.In the end of the book an outlook on the unique applications of novel nanocomposites is offered, for example in water treatment and disinfection and removal of pollutants from wastewater, self-cleaning window panes based on photoactive materials, and many more. The book also addresses the challenges in present photocatalytic research, and therefore is a must-read for everybody interested in the developing field of nanocomposites and visible light-induced photocatalysis.

New and Future Developments in Catalysis

New and Future Developments in Catalysis Book
Author : Steven L Suib
Publisher : Newnes
Release : 2013-07-19
ISBN : 0444538739
Language : En, Es, Fr & De

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Book Description :

New and Future Developments in Catalysis is a package of seven books that compile the latest ideas concerning alternate and renewable energy sources and the role that catalysis plays in converting new renewable feedstock into biofuels and biochemicals. Both homogeneous and heterogeneous catalysts and catalytic processes will be discussed in a unified and comprehensive approach. There will be extensive cross-referencing within all volumes. The use of solar energy during various catalytic chemical processes for the production of an array of chemical products is the theme of this volume. Photocatalysis is a topic of increasing importance due to its essential role in many of today’s environmental and energy source problems. The use of solar energy for catalytic reactions results in a carbon dioxide–neutral process. All photocatalytic processes and the future developments in this area are discussed, including an economic analysis of the various processes. Offers in-depth coverage of all catalytic topics of current interest and outlines future challenges and research areas A clear and visual description of all parameters and conditions, enabling the reader to draw conclusions for a particular case Outlines the catalytic processes applicable to energy generation and design of green processes

Nanomaterials and Photocatalysis in Chemistry

Nanomaterials and Photocatalysis in Chemistry Book
Author : Muhammad Bilal Tahir
Publisher : Springer Nature
Release : 2021-12-04
ISBN : 9811606463
Language : En, Es, Fr & De

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Book Description :

Download Nanomaterials and Photocatalysis in Chemistry book written by Muhammad Bilal Tahir, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Advanced Nanostructured Materials for Environmental Remediation

Advanced Nanostructured Materials for Environmental Remediation Book
Author : Mu. Naushad,Saravanan Rajendran,Francisco Gracia
Publisher : Springer
Release : 2019-03-14
ISBN : 3030044777
Language : En, Es, Fr & De

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Book Description :

This book provides a wide-range exploration on the ongoing research and developmental events in environmental nanotechnology. Emerging nanomaterials and its technology have been known to offer unique advantages and are continually showing promising potential attracting continuous global attention. This work thus discusses experimental studies of various nanomaterials along with their design and applications and with specific attention to chemical reactions and their challenges for catalytic systems. It will make a noteworthy appeal to scientists and researchers working in the field of nanotechnology for environmental sciences.

Emerging Nanostructured Materials for Energy and Environmental Science

Emerging Nanostructured Materials for Energy and Environmental Science Book
Author : Saravanan Rajendran,Mu. Naushad,Kumar Raju,Rabah Boukherroub
Publisher : Springer
Release : 2019-02-07
ISBN : 3030044742
Language : En, Es, Fr & De

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Book Description :

This book provides the fundamental aspects of the diverse ranges of nanostructured materials (0D, 1D, 2D and 3D) for energy and environmental applications in a comprehensive manner written by specialists who are at the forefront of research in the field of energy and environmental science. Experimental studies of nanomaterials for aforementioned applications are discussed along with their design, fabrication and their applications, with a specific focus on catalysis, energy storage and conversion systems. This work also emphasizes the challenges of past developments and directions for further research. It also looks at details pertaining to the current ground – breaking of nanotechnology and future perspectives with a multidisciplinary approach to energy and environmental science and informs readers about an efficient utilization of nanomaterials to deliver solutions for the public.

Semiconductor Photocatalysis

Semiconductor Photocatalysis Book
Author : Wenbin Cao
Publisher : BoD – Books on Demand
Release : 2016-08-24
ISBN : 9535124846
Language : En, Es, Fr & De

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Book Description :

Photocatalysis is a hot topic because it is an environmentally friendly approach toward the conversion of light energy into chemical energy at mild reaction environments. Also, it is well applied in several major areas such as water splitting, bacterial inactivation, and pollutants elimination, which is a possible solution to energy shortage and environmental issues. The fundamental knowledge and the frontier research progress in typical photocatalytic materials, such as TiO2-based and non-TiO2-based photocatalysts, are included in this book. Methods to improve the photocatalytic efficiency and to provide a hint for the rational design of the new photocatalysts are covered.

Nanostructured Photocatalysts

Nanostructured Photocatalysts Book
Author : Hiromi Yamashita,Hexing Li
Publisher : Springer
Release : 2016-05-03
ISBN : 3319260790
Language : En, Es, Fr & De

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Book Description :

While books on semiconductor TiO2 photocatalysis are legion, nanostructured controlled photocatalysts are attractive beyond standard semiconductors, and this book is devoted to the many novel uses of advanced TiO2 and MOF-based photocatalysts. Details on synthesis, characterization, and reaction applications of nanostructured photocatalysts are summarized. Other new materials discussed in this book are Bi- W- oxides, metal complexes, and unique porous materials. This book contains methods of preparation and characterization of unique nanostructured photocatalysts, and details about their catalytic action. Contributors to this volume are leading Asian researchers in Photocatalysis. It will appeal to researchers wishing to know how to design new types of photocatalysts with controlled nanostructures.

Nanostructured Materials and Nanotechnology VI

Nanostructured Materials and Nanotechnology VI Book
Author : Sanjay Mathur,Suprakas Sinha Ray
Publisher : John Wiley & Sons
Release : 2012-11-27
ISBN : 111853025X
Language : En, Es, Fr & De

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Book Description :

This issue features fourteen peer-reviewed papers originating from The 6th International Symposium on Nanostructured Materials and Nanotechnology. It includes Nanostructured coatings by cluster beam deposition; a new greener synthetic route to cadmium/lead selenide and telluride nanoparticles; and much more. Held in January 2012, during the 36th International Conference on Advanced Ceramics and Composites (ICACC), the symposium covered a broad range of issues, including synthesis, processing, modeling, and structure-property correlations in nanomaterials and nanocomposites, enabling scientists, engineers, and technologists from around the world to explore the latest developments in the field.

Growth of Metal and Semiconductor Nanostructures Using Localized Photocatalysts

Growth of Metal and Semiconductor Nanostructures Using Localized Photocatalysts Book
Author : Anonim
Publisher : Unknown
Release : 2006
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Our overall goal has been to understand and develop a light-driven approach to the controlled growth of novel metal and semiconductor nanostructures and nanomaterials. In this photochemical process, bio-inspired porphyrin-based photocatalysts reduce metal salts in aqueous solutions at ambient temperatures when exposed to visible light, providing metal nucleation and growth centers. The photocatalyst molecules are pre-positioned at the nanoscale to control the location of the deposition of metal and therefore the morphology of the nanostructures that are grown. Self-assembly, chemical confinement, and molecular templating are some of the methods we are using for nanoscale positioning of the photocatalyst molecules. When exposed to light, each photocatalyst molecule repeatedly reduces metal ions from solution, leading to deposition near the photocatalyst and ultimately the synthesis of new metallic nanostructures and nanostructured materials. Studies of the photocatalytic growth process and the resulting nanostructures address a number of fundamental biological, chemical, and environmental issues and draw on the combined nanoscience characterization and multi-scale simulation capabilities of the new DOE Center for Integrated Nanotechnologies at Sandia National Laboratories and the University of Georgia. Our main goals are to elucidate the processes involved in the photocatalytic growth of metal nanomaterials and provide the scientific basis for controlled nanosynthesis. The nanomaterials resulting from these studies have applications in nanoelectronics, photonics, sensors, catalysis, and micromechanical systems. Our specific goals for the past three years have been to understand the role of photocatalysis in the synthesis of dendritic metal (Pt, Pd, Au) nanostructures grown from aqueous surfactant solutions under ambient conditions and the synthesis of photocatalytic porphyrin nanostructures (e.g., nanotubes) as templates for fabrication of photo-active metal-composite nanodevices. The proposed nanoscience concentrates on two thematic research areas: (1) the creation of metal and semiconductor nanostructures and nanomaterials for realizing novel catalytic phenomena and quantum control, (2) understanding photocatalytic metal deposition processes at the nanoscale especially on photocatalytic porphyrin nanostructures such as nanotubes, and (3) the development and use of multi-scale, multi-phenomena theory and simulation for ionic self-assembly and catalytic processes.

Advanced Hierarchical Nanostructured Materials

Advanced Hierarchical Nanostructured Materials Book
Author : Qiang Zhang,Fei Wei
Publisher : John Wiley & Sons
Release : 2014-05-19
ISBN : 3527333460
Language : En, Es, Fr & De

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Book Description :

An overview of the recent developments and prospects in this highly topical area, covering the synthesis, characterization, properties and applications of hierarchical nanostructured materials. The book concentrates on those materials relevant for research and development in the fields of energy, biomedicine and environmental protection, with a strong focus on 3D materials based on nanocarbons, mesoporous silicates, hydroxides, core-shell particles and helical nanostructures. Thanks to its clear concept and application-oriented approach, this is an essential reference for experienced researchers and newcomers to the field alike.