Electron Donor Systems In Natural And Artificial Photosynthesis
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Electron Donor Systems In Natural And Artificial Photosynthesis
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Author : Ann Magnuson
language : en
Publisher:
Release Date : 1998
Electron Donor Systems In Natural And Artificial Photosynthesis written by Ann Magnuson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Natural And Artificial Photosynthesis
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Author : Reza Razeghifard
language : en
Publisher: John Wiley & Sons
Release Date : 2013-08-23
Natural And Artificial Photosynthesis written by Reza Razeghifard and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-08-23 with Science categories.
This technical book explores current and future applications of solar power as an unlimited source of energy that earth receives every day. Photosynthetic organisms have learned to utilize this abundant source of energy by converting it into high-energy biochemical compounds. Inspired by the efficient conversion of solar energy into an electron flow, attempts have been made to construct artificial photosynthetic systems capable of establishing a charge separation state for generating electricity or driving chemical reactions. Another important aspect of photosynthesis is the CO2 fixation and the production of high energy compounds. Photosynthesis can produce biomass using solar energy while reducing the CO2 level in air. Biomass can be converted into biofuels such as biodiesel and bioethanol. Under certain conditions, photosynthetic organisms can also produce hydrogen gas which is one of the cleanest sources of energy.
Artificial Photosynthesis
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Author : Anthony F. Collings
language : en
Publisher: John Wiley & Sons
Release Date : 2007-09-24
Artificial Photosynthesis written by Anthony F. Collings and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-09-24 with Science categories.
Since the events crucial to plant photosynthesis are now known in molecular detail, this process is no longer nature's secret, but can for the first time be mimicked by technology. Broad in its scope, this book spans the basics of biological photosynthesis right up to the current approaches for its technical exploitation, making it the most complete resource on artificial photosynthesis ever published. The contents draw on the expertise of the Australian Artificial Photosynthesis Network, currently the world's largest coordinated research effort to develop effective photosynthesis technology. This is further backed by expert contributions from around the globe, providing an authoritative overview of current research worldwide.
Energy Conversion In Natural And Artificial Photosynthesis
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Author : Katharina Brinkert
language : en
Publisher: Springer
Release Date : 2018-03-16
Energy Conversion In Natural And Artificial Photosynthesis written by Katharina Brinkert and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-16 with Technology & Engineering categories.
This book discusses the basic principles and processes of solar energy conversion in natural photosynthesis. It then directly compares them with recent developments and concepts currently being pursued in artificial photosynthetic systems that are capable of utilizing sunlight to convert carbon dioxide and water into a chemical fuel. In this regard, the main focus is on photoelectrochemical cells, in which semiconducting photoanodes and -cathodes modified with (electro-) catalysts are used to oxidize water, produce hydrogen and reduce carbon dioxide in a monolithic device. The fundamental photochemical and photophysical processes involved are presented and discussed, along with protection mechanisms and efficiency calculations for both natural and artificial photosynthesis. In turn, key parameters that are crucial for the efficient operation of natural photosynthesis are identified. Lastly, their validity and applicability in the design of artificial solar-driven water-splitting systems are examined.
Quatre Pi Ces Com Dies En Un Acte De Georges Feydeau
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Author :
language : en
Publisher:
Release Date : 2009
Quatre Pi Ces Com Dies En Un Acte De Georges Feydeau written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
Compounds For Investigating Photosynthetic Pathways And Solar Energy Conversion
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Author : Chelsea L. Brown
language : en
Publisher:
Release Date : 2015
Compounds For Investigating Photosynthetic Pathways And Solar Energy Conversion written by Chelsea L. Brown and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Electronic dissertations categories.
Humanity's demand for energy is increasing exponentially and the dependence on fossil fuels is both unsustainable and detrimental to the environment. To provide a solution to the impending energy crisis, it is reasonable to look toward utilizing solar energy, which is abundant and renewable. One approach to harvesting solar irradiation for fuel purposes is through mimicking the processes of natural photosynthesis in an artificial design to use sunlight and water to store energy in chemical bonds for later use. Thus, in order to design an efficient energy conversion device, the underlying processes of the natural system must be understood. An artificial photosynthetic device has many components and each can be optimized separately. This work deals with the design, construction and study of some of those components. The first chapter provides an introduction to this work. The second chapter shows a proof of concept for a water splitting dye sensitized photoelectrochemical cell followed by the presentation of a new p-type semiconductor, the design of a modular cluster binding protein that can be used for incorporating catalysts, and a new anchoring group for semiconducting oxides with high electron injection efficiency. The third chapter investigates the role of electronic coupling and thermodynamics for photoprotection in artificial systems by triplet-triplet energy transfer from tetrapyrroles to carotenoids. The fourth chapter describes a mimic of the proton-coupled electron transfer in photosystem II and confirms that in the artificial system a concerted mechanism operates. In the fifth chapter, a microbial system is designed to work in tandem with a photovoltaic device to produce high energy fuels. A variety of quinone redox mediators have been synthesized to shuttle electrons from an electron donor to the microbial system. Lastly, the synthesis of a variety of photosensitizers is detailed for possible future use in artificial systems. The results of this work helps with the understanding of the processes of natural photosynthesis and suggests ways to design artificial photosynthetic devices that can contribute to solving the renewable energy challenge.
Plant Physiology Annual Volume 2023
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Author :
language : en
Publisher: BoD – Books on Demand
Release Date : 2023-12-13
Plant Physiology Annual Volume 2023 written by and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-12-13 with Science categories.
This book summarizes the design of drought-tolerant crops through CRISPR/Cas-mediated genome editing, focusing on reprogramming gene expression patterns that regulate the balance of plant hormones. The organic farming system is presented to highlight the potential role of alleviating changing climate-related abiotic stress. The current knowledge of artificial photosynthesis systems and cellular processes related to photosynthetic biochemistry was illustrated. Additionally, it explores intriguing subtopics of plant physiology, including an alternative natural rubber source and plant reproductive strategies, contributing to advancements in agricultural biotechnology. Recommended for students, teachers, and researchers interested in applied plant physiology, plant biochemistry, and crop breeding.
Photosynthetic Protein Based Photovoltaics
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Author : Swee Ching Tan
language : en
Publisher: CRC Press
Release Date : 2018-09-03
Photosynthetic Protein Based Photovoltaics written by Swee Ching Tan and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-03 with Medical categories.
Ever since the discovery of the photoelectric effect, researchers have been trying to improve the efficiency of converting sunlight into electricity through photovoltaic devices. Photosynthetic organisms provide clues for harvesting sunlight and storing the energy in chemical forms. This book offers a concise overview of the fundamental concepts of photosynthesis and the emerging photovoltaic technologies, casting light on the symbiotic relation between these spheres of science. Although there are many books about the fundamentals of photosynthesis and the various aspects of the photosynthetic processes, this is the first volume to focus on the prospects of studying the photosynthetic proteins, understanding and applying their properties to design prospective solar energy conversion devices that are sustainable and efficient. All in all, the book aims to bring together the present know-how on organic photovoltaics and dye-sensitized solar cells with that of the emerging bio-photovoltaics and the underlying physics of photosynthesis to foster a more eclectic research that would converge towards a sustainable energy technology for the future. The book mainly serves as a bridge to connect biochemists, who study photosynthetic proteins, and physicists and engineers who design and develop photovoltaic devices. Scientists, engineers and students in the fields of photosynthetic research and solar energy research can use this book as a ready reference. Key selling features: Covers both methods and bio-based materials needed to build bio-based photovoltaics Focuses on both techniques and applications Summarizes the advantages and limitations of various techniques Contributors from multiple disciplines integrate the knowledge of photosynthetic proteins and the physics/engineering of photovoltaic devices. Includes adaptive designs and techniques used in other types of solar cells to for the design of protein-based PVs
Elucidation Of Photoinduced Energy And Electron Transfer Mechanisms In Multimodular Artificial Photosynthetic Systems
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Author : Gary Lloyd Nogra Lim
language : en
Publisher:
Release Date : 2017
Elucidation Of Photoinduced Energy And Electron Transfer Mechanisms In Multimodular Artificial Photosynthetic Systems written by Gary Lloyd Nogra Lim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with Charge exchange categories.
Multimodular designs of electron donor-acceptor systems are the ultimate strategy in fabricating antenna-reaction center mimics for artificial photosynthetic applications. The studied photosystems clearly demonstrated efficient energy transfer from the antenna system to the primary electron donor, and charge stabilization of the radical ion pair achieved with the utilization of secondary electron donors that permits either electron migration or hole transfer. Moreover, the molecular arrangement of the photoactive components also influences the route of energy and electron transfer as observed from the aluminum(III) porphyrin-based photosystems. Furthermore, modulation of the photophysical and electronic properties of these photoactive units were illustrated from the thio-aryl substitution of subphthalocyanines yielding red-shifted Q bands of the said chromophore; hence, regulating the rate of charge separation and recombination in the subphthalocyanine-fullerene conjugates. These multicomponent photosystems has the potential to absorb the entire UV-visible-NIR spectrum of the light energy allowing maximum light-harvesting capability. Furthermore, it permits charge stabilization of the radical ion pair enabling the utilization of the transferred electron/s to be used by water oxidizing and proton reducing catalysts in full-scale artificial photosynthetic apparatuses.
Artificial Photosynthesis Using Chlorophyll Based Carotenoid Quinone Triads
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Author :
language : en
Publisher:
Release Date : 1986
Artificial Photosynthesis Using Chlorophyll Based Carotenoid Quinone Triads written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
The design, synthesis and study of a series of carotenoid-chlorophyll-quinone triad molecules which mimic some of the basic photochemistry and photophysics of natural photosynthesis is sought. The first members of this series have now been prepared, and have been found to mimic photosynthetic charge separation, carotenoid antenna function, and carotenoid photoprotection from singlet oxygen damage. Although the triad molecules mimic the general principle of multistep electron transfer which is found in natural photosynthesis, the details of photosynthetic electron transfer differ in the triads, in that the first electron transfer step involves electron donation from the excited state donor, followed by reduction of the resulting donor radical cation by the carotenoid. In photosynthesis, the electron is moved through several acceptors before the chlorophyll radical cation is reduced. Therefore, our recent work has concentrated on the design and synthesis of new model systems which better mimic certain aspects of natural photosynthesis.