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Nanostructured Photocatalysts

Nanostructured Photocatalysts
Advanced Functional Materials

by Hiromi Yamashita,Hexing Li

  • Publisher : Springer
  • Release : 2016-05-03
  • Pages : 544
  • ISBN : 3319260790
  • Language : En, Es, Fr & De
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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 Photocatalysts

Nanostructured Photocatalysts
From Materials to Applications in Solar Fuels and Environmental Remediation

by Rabah Boukherroub,Satishchandra B. OGALE,Neil Robertson

  • Publisher : Elsevier
  • Release : 2020-06-06
  • Pages : 300
  • ISBN : 012817837X
  • Language : En, Es, Fr & De
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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

Nanostructured Photocatalysts

Nanostructured Photocatalysts
From Fundamental to Practical Applications

by Van-Huy Nguyen,Dai-Viet N. Vo,Sonil Nanda

  • Publisher : Elsevier
  • Release : 2021-05-15
  • Pages : 412
  • ISBN : 9780128230077
  • Language : En, Es, Fr & De
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Nanostructured Photocatalysts: From Fundamental to Practical Applications offers a good opportunity for academic, industrial researchers and engineers to gain insights on the fundamental principles and updated knowledge on the engineering aspects and various practical applications of photocatalysis. This book comprehensively and systematically reviews photocatalytic fundamental aspects, ranging from reaction mechanism, kinetic modeling, nanocatalyst synthesis and design, essential material characterization using advanced techniques, and novel reactor design and scale-up. Future perspectives, techno-economical evaluation and lifecycle assessment of photocatalytic processes are also provided. Finally, a wide range of practical, important and emerging photocatalytic applications, namely wastewater treatment, air pollution remediation, renewable and green energy generation, and vital chemical production are thoroughly covered, making this book useful and beneficial for engineers, scientists, academic researchers, undergraduates and postgraduates. Provides a fundamental understanding of photocatalysis Covers all aspects of recent developments in photocatalytic processes and photocatalytic materials Focuses on advanced photocatalytic applications and future research advancements on energy, environment, biomedical, and other specialty fields Contains contributions from leading international experts in photocatalysis Presents a valuable reference for academic and industrial researchers, scientists and engineers

Photochemical Charge Transfer in Nanostructured Photocatalysts for Solar Hydrogen Production

Photochemical Charge Transfer in Nanostructured Photocatalysts for Solar Hydrogen Production
A Book

by Jiarui Wang

  • Publisher : Unknown Publisher
  • Release : 2015
  • Pages : 329
  • ISBN : 9781339543994
  • Language : En, Es, Fr & De
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Solar energy is a promising sustainable energy source to reduce greenhouse gas emission from combustion of fossil fuels and slow down the global climate change. Solar hydrogen generation via photocatalytic water splitting is potentially the most cost-effective way to produce solar fuels, so the development of efficient photocatalysts is one of the most important targets for scientific research. However, the application of inorganic materials for solar water splitting is currently limited by our understanding of photochemical charge transfer on the nanoscale, where space charge layers are less effective for carrier separation. Therefore, this dissertation focuses on the preparation of well-defined photocatalysts for the water splitting reaction and on the characterization of photochemical charge transfer on their interfaces. This will be accomplished through the application of surface photovoltage and photoelectrochemical measurements, and with photocatalytic reactivity tests. Results from this study can guide the design of inorganic photocatalysts with improved efficiency for solar energy conversion into fuel. Chapter 2 describes surface photovoltage spectroscopy studies to measure the internal photovoltages in a hydrogen evolution photocatalyst, single crystalline platinum/ruthenium-modified Rh-doped SrTiO3 nanocrystals. Voltages of -0.88 V and -1.13 V are found between the light absorber and the Ru and Pt cocatalysts, respectively, and a voltage of -1.48 V for a Rh-doped SrTiO3 film on an Au substrate. The voltages shows that the Pt and Ru cocatalysts not only improve the redox kinetics but also aid charge separation in the absorber. The voltages with redox agents correlate well with the photocatalytic performance of the catalyst and are influenced by the built-in potentials of the donor-acceptor configurations, the physical separation of donors and acceptors, and the reversibility of the redox reaction. The photovoltage data also allow the identification of a photosynthetic system for hydrogen evolution (80 [mu]mol·g−11h−1) under visible light illumination (>400 nm) from 0.05 M aqueous K4[Fe(CN)6]. Chapter 3 shows that suspended p-Si nanowires obtained by etching of an Al-doped silicon wafer facilitate photochemical hydrogen evolution under visible light. The activity varies greatly between sacrificial donors and can be increased by attachment of MoS2 cocatalysts, which promote proton reduction and charge transfer at the silicon-MoS2 interface. Overall, the activity of suspended p-Si nanorods is limited by the stability of the material in neutral solutions. A basic or neutral environment with photo-excitation can lead to silicon corrosion. In 0.05 M ferrocyanide at pH 6.5, the hydrogen evolution rate for SiNW/MoS2 was as high as 106 [mu]mol (10mg)−1 h−1 accompanied by silicon corrosion. The rate without corrosion decreased to 0.64 [mu]mol (10mg)−1 h−1 at a lower pH of 4.7. With silicon corrosion, the rate also reached 117 [mu]mol (10mg)−1 h−1 in pH 6.5 0.05 M Na2SO3 solution and 678 [mu]mol (10mg)−1 h−1 in 0.1 M NaSH without pH control. Silicon corrosion was not found in formaldehyde and methanol solutions, but the rates of SiNW/MoS2 and SiNW were as low as 0.40 and 0.18 [mu]mol (10mg)−1 h−1 for methanol solution, and 0.71 and 0.27 [mu]mol (10mg)−1 h−1 for formaldehyde solution. The increased hydrogen evolution with silicon corrosion can be attributed to both electron donating of silicon and reduced charge transfer resistivity with the dissolution of surface oxide layer on silicon nanowires. These findings can improve the understanding of photochemistry of Si-MoS2 catalyst, and help avoiding silicon corrosion in photocatalysis.

Nanotechnology Applications for Clean Water

Nanotechnology Applications for Clean Water
Solutions for Improving Water Quality

by Mamadou Diallo,Anita Street,Richard Sustich,Jeremiah Duncan,Nora Savage

  • Publisher : William Andrew
  • Release : 2009-02-12
  • Pages : 700
  • ISBN : 9780815519737
  • Language : En, Es, Fr & De
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The World Health Organization in 2004 estimated approximately 1.1 billion people did not have access to clean water and that 35% of Third World residents died from water-borne illnesses. While the situation is grim, recent advances strongly indicate that many of the current water quality problems can be addresses – and potentially resolved – using nanotechnology. Nanotechnology is already having a dramatic impact on research in water quality and Nanotechnology Applications for Clean Water highlights both the challenges and the opportunities for nanotechnology to positively influence this area of environmental protection. Here you will find detailed information on breakthroughs, cutting edge technologies, current research, and future trends that may affect acceptance of widespread applications. The first four parts of the book cover specific topics including using nanotechnology for clean drinking water in both large scale water treatment plants and in point-of-use systems. For instance, recent advances show that many of the current problems involving water quality can be addressed using nanosorbents, nanocatalysts, bioactive nanoparticles, nanostructured catalytic membranes, and nanoparticle enhanced filtration. The book also discusses existing technologies and future potential for groundwater remediation, pollution prevention, and sensors. The final part discusses the inherent societal implications that may affect acceptance of widespread applications. Over 80 leading experts from around the world share their wealth of knowledge in this truly unique reference. Institutions such as Center for the Purification of Water and Systems (Univ. of Illinois at Urbana-Champaign); UCLA Water Technology Center; Carnegie Mellon University, University of Kentucky; The University of Western Ontario; Pacific Northwest National Laboratory; National Institute for Advanced Industrial Science and Technology (Japan), Munasinghe Institute for Development (Sri Lanka) and the Woodrow Wilson Center for Scholars are just a few of the knowledge centers represented in this book. Water quality is a serious, global issue in which government bodies and scientific communities face many challenges in ensuring clean water is available to everyone. Nanotechnology is already showing dramatic results, and this book is an attempt to share current technologies and future possibilities in reaching this goal. From the Foreword: "Researchers and practitioners may find in this volume, key challenges regarding clean water resources. The presentations may crystallize new research and education programs." - Mihail Roco, U.S. National Science Foundation and U.S. Nanotechnology Initiative • Contributors from the US, India, Canada, Japan, UK, Sri Lanka, and South Africa • Provides detailed information on breakthroughs, cutting edge technologies, current research, and future trends that may affect acceptance of widespread applications • Covers specific topics including using nanotechnology for clean drinking water in both large scale water treatment plants and in point-of-use systems. • Discusses existing technologies and future potential for groundwater remediation, pollution prevention, and sensors • Highlights both the challenges and the opportunities for nanotechnology to positively influence this area of environmental protection.

Visible-Light-Active Photocatalysis

Visible-Light-Active Photocatalysis
Nanostructured Catalyst Design, Mechanisms, and Applications

by Srabanti Ghosh

  • Publisher : John Wiley & Sons
  • Release : 2018-06-11
  • Pages : 640
  • ISBN : 3527342931
  • Language : En, Es, Fr & De
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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 Materials for Visible-Light-Photocatalysis

Nanostructured Materials for Visible-Light-Photocatalysis
A Book

by Arpan Kumar Nayak,Niroj Kumar Sahu

  • Publisher : Elsevier
  • Release : 2021-09-15
  • Pages : 400
  • ISBN : 9780128230183
  • Language : En, Es, Fr & De
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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 two chapters include a general introduction, basic principles and mechanisms of nanomaterials for visible-light-photocatalysis. Recent advances in carbon, transition metal oxide, and chalcogenides-based nanostructured materials for visible light photocatalysis are discussed in Chapters 3 to 5. Chapters VI and VII describe the role of sulphides, carbides, nitrides, and rare earth-based nanostructured-based materials over visible-light-photocatalysis. The above chapters also explain the characteristics, synthesis, and fabrication of photocatalysts. The role of doping, composites, defects, different facets, and morphology of nanostructured materials for efficient dye removal under visible-light irradiation, are explained in Chapters VIII to XII. Large-scale production of nanostructured materials, used for industrial scales and their problems, including solutions, are discussed in Chapters XIII and XIV. In the conclusion of the book, the challenges in present photocatalytic research, research gaps, and the future scope of nanostructured materials over environmental hazard remediation under visible-light, as well as solar light harvesting are addressed. This book presents a valuable reference to researchers that enables them to learn more about designing advanced nanostructured materials for waste water 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

Photocatalytic Materials & Surfaces for Environmental Cleanup IV

Photocatalytic Materials & Surfaces for Environmental Cleanup IV
A Book

by Rajesh J. Tayade

  • Publisher : Trans Tech Publications Ltd
  • Release : 2016-05-19
  • Pages : 180
  • ISBN : 3035730210
  • Language : En, Es, Fr & De
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This special topic volume on “Photocatalytic Materials and Surfaces for Environmental Cleanup IV” addresses photocatalysis in wide sense focus on the environmental applications of photocatalytic materials. Photocatalytic materials had been widely studied for the various applications such as water and air purification, CO2 reduction, hydrogen generation, and development of auto-cleaning surfaces etc. The present special topic volume covers the application of various photocatalytic materials for CO2 reduction, hydrogen generation, removal of pesticides, degradation of organic pollutant and recent development in the fabrication of photocatalytic reactors.

Photocatalysis

Photocatalysis
Fundamentals, Materials and Applications

by Jinlong Zhang,Baozhu Tian,Lingzhi Wang,Mingyang Xing,Juying Lei

  • Publisher : Springer
  • Release : 2018-10-11
  • Pages : 409
  • ISBN : 9811321132
  • Language : En, Es, Fr & De
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This book describes the photocatalytic mechanism, factors affecting photocatalytic activity, design and preparation of different kinds of nanostructured photocatalysts, and their applications in the environmental and energy fields. Further, it illustrates a broad range of modification methods including ion-doping, heterojunction, noble metal deposition, morphological control and sensitizations, which are used to extend the light absorption range of photocatalysts and reduce recombination between electrons and holes. Promising applications include water splitting, contaminant decomposition and photocatalytic reduction of CO2, which are closely related to environmental redemption and new energy development. The book offers an intriguing and useful guide for a broad readership in various fields of catalysis, material sciences, environment and energy.

Nanostructured Titanium Dioxide in Photocatalysis

Nanostructured Titanium Dioxide in Photocatalysis
A Book

by It-Meng Low,Hani Manssor Albetran,Victor Manuel de la Prida Pidal,Fong Kwong Yam

  • Publisher : CRC Press
  • Release : 2021-06-18
  • Pages : 320
  • ISBN : 1000348229
  • Language : En, Es, Fr & De
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Titanium dioxide (TiO2) has drawn considerable attention as an attractive inorganic raw material for various applications due to its inexpensiveness, nontoxic nature, stability, and excellent photocatalytic activity. Photocatalysis is one of the most promising route for sustainable chemistry of the 21st century. It can contribute to solving environmental, global energy, and chemical problems, as well as to the sustainable production of commodities in the near future. This book presents the fundamentals of photocatalysis in nanostructured TiO2 and describes the factors affecting the photocatalytic activity, design, and synthesis of various forms of nanostructured TiO2. It highlights the use of ion-doping and inert-atmosphere annealing to extend the light-absorption range of photocatalysts and reduce recombination between electrons and holes. It discusses numerous applications in the fields of energy and environment, such as water purification, gas sensing, storage and delivery, and energy generation. The book is an invaluable resource and useful guide for a broad readership in various fields of catalysis, materials science, environment, and energy.

Nanoscience

Nanoscience
Nanostructures through Chemistry

by P O'Brien,P J Thomas

  • Publisher : Royal Society of Chemistry
  • Release : 2013-12-02
  • Pages : 285
  • ISBN : 1849735824
  • Language : En, Es, Fr & De
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This volume will present critical and comphrehensive reviews examining the latest research and developments in nanoscience in accessible articles. Quantum dot synthesis, soft lithography and graphene will feature in the debut volume, along with perspectives on research in China and India.

Dissertation Abstracts International

Dissertation Abstracts International
The sciences and engineering. B

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2008
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Nanomaterials and Photocatalysis in Chemistry

Nanomaterials and Photocatalysis in Chemistry
Mechanistic and Experimental Approaches

by Muhammad Bilal Tahir

  • Publisher : Springer Nature
  • Release : 2021
  • Pages : 329
  • ISBN : 9811606463
  • Language : En, Es, Fr & De
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Nanophotocatalysis and Environmental Applications

Nanophotocatalysis and Environmental Applications
Materials and Technology

by Inamuddin,Gaurav Sharma,Amit Kumar,Eric Lichtfouse,Abdullah M. Asiri

  • Publisher : Springer
  • Release : 2019-03-14
  • Pages : 336
  • ISBN : 3030106098
  • Language : En, Es, Fr & De
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This book serves the environmentalists to track the development of photocatalytic materials and technology in the present context and to explore future trends. Photocatalysis is the most influential greener technology being researched, developed and adopted for the treatment of wastewater. The technological advancements in the area of smart hybrid photocatalytic materials have gained momentum in the present era. The rational designing of photocatalytic materials with a multi-pronged approach opens a new chapter for environmental detoxification. Other important aspects relate to the transfer of this nanostructured photocatalytic technology to real backdrops. Harnessing natural solar energy for energy and environmental roles is another crucial criterion in designing photocatalysts.

Fabrication of Polycrystalline Silicon Wafers by Wafer Casting and Thermal Spray Coating Methods

Fabrication of Polycrystalline Silicon Wafers by Wafer Casting and Thermal Spray Coating Methods
A Book

by Harishankar Umapathy

  • Publisher : Unknown Publisher
  • Release : 2009
  • Pages : 106
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Nanotechnology for Environmental Decontamination

Nanotechnology for Environmental Decontamination
A Book

by Manoj Kumar Ram,E. Silvana Andreescu,Ding Hanming

  • Publisher : McGraw Hill Professional
  • Release : 2011-06-01
  • Pages : 448
  • ISBN : 0071702806
  • Language : En, Es, Fr & De
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CUTTING-EDGE NANOTECHNOLOGY TECHNIQUES AND APPLICATIONS FOR ENVIRONMENTAL DECONTAMINATION Written by a team of global experts, Nanotechnology for Environmental Contamination covers the latest methods for using nanomaterials, processes, and tools to remediate toxin-contaminated water, air, soil, groundwater, and wastewater. This groundbreaking work discusses the use of nanotechnology to neutralize microbes, pesticides, heavy metals, industrial chemicals, chemical and biological warfare agents, and other toxic substances. In-depth details on the physics, chemistry, and technology of nanomaterials, nanostructures, and nanotechnology for decontamination are included in this authoritative resource. Preparation and application of inner skin hollow fiber nanoporous membrane Photocatalytic inactivation of water and air pollution Application of nano TiO, catalyst in wastewater treatment Photoelectrocatalytic degradation of organic contaminants at nanosemiconductor film electrodes under visible light irradiation Disinfection of microbes by nanoparticles Water disinfection and wastewater decontamination by solar photocatalysis using nanomaterials The role of nanotechnology for decontamination of chemical warfare agents Nanostructured bioassemblies for environmental bioremediation Reactive nanoparticles for the treatment of chlorinated dense nonaqueous phase liquids (DNAPL) in soil and groundwater Persistent pesticides: detection and control using nanotechnology Decontaminating chemical and biological warfare agents and related toxins with nanomaterials

Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment

Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment
A Book

by Sadanand Pandey,Suprakas Sinha Ray

  • Publisher : John Wiley & Sons
  • Release : 2020-06-03
  • Pages : 320
  • ISBN : 1119631394
  • Language : En, Es, Fr & De
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Photocatalysts in Advanced Oxidation Processes for Wastewater Treatment comprehensively covers a range of topics aiming to promote the implementation of photocatalysis at large scale through provision of facile and green methods for catalysts synthesis and elucidation of pollutants degradation mechanisms. This book is divided into two main parts namely “Synthesis of effective photocatalysts” (Part I) and “Mechanisms of the photocatalytic degradation of various pollutants” (Part II). The first part focuses on the exploration of various strategies to synthesize sustainable and effective photocatalysts. The second part of the book provides an insights into the photocatalytic degradation mechanisms and pathways under ultraviolet and visible light irradiation, as well as the challenges faced by this technology and its future prospects.

Electrotechnologies for Countering Bioterrorism

Electrotechnologies for Countering Bioterrorism
Final Report

by G. Mezei

  • Publisher : Unknown Publisher
  • Release : 2002
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Annual Index/Abstracts of Sae Technical Papers, 2005

Annual Index/Abstracts of Sae Technical Papers, 2005
A Book

by Society of Automotive Engineers

  • Publisher : Unknown Publisher
  • Release : 2006-02-15
  • Pages : 329
  • ISBN : 9780768016949
  • Language : En, Es, Fr & De
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Semiconductor Photocatalysis

Semiconductor Photocatalysis
Materials, Mechanisms and Applications

by Wenbin Cao

  • Publisher : BoD – Books on Demand
  • Release : 2016-08-24
  • Pages : 676
  • ISBN : 9535124846
  • Language : En, Es, Fr & De
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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.