New Insights into the Mechanism of Visible Light Photocatalysis
Swagata Banerjee,Suresh C. Pillai,Polycarpos Falaras,Kevin E. O'Shea,John Byrne,Dionysios D. Dionysiou +5 more
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TLDR
Various examples of advanced TiO2 composites have been discussed in relation to their visible light induced photoconversion efficiency, dynamics of electron-hole separation, and decomposition of organic and inorganic pollutants, which suggest the critical need for further development of these types of materials for energy conversion and environmental remediation purposes.Abstract:
In recent years, the area of developing visible-light-active photocatalysts based on titanium dioxide has been enormously investigated due to its wide range of applications in energy and environment related fields. Various strategies have been designed to efficiently utilize the solar radiation and to enhance the efficiency of photocatalytic processes. Building on the fundamental strategies to improve the visible light activity of TiO2-based photocatalysts, this Perspective aims to give an insight into many contemporary developments in the field of visible-light-active photocatalysis. Various examples of advanced TiO2 composites have been discussed in relation to their visible light induced photoconversion efficiency, dynamics of electron–hole separation, and decomposition of organic and inorganic pollutants, which suggest the critical need for further development of these types of materials for energy conversion and environmental remediation purposes.read more
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An overview on limitations of TiO2-based particles for photocatalytic degradation of organic pollutants and the corresponding countermeasures
TL;DR: This review summarizes the recently developed countermeasures for improving the performance of TiO2-based photocatalytic degradation of organic pollutants with respect to the visible-light photocatallytic activity, adsorption capacity, stability and separability.
Journal ArticleDOI
Visible-light activation of TiO2 photocatalysts: Advances in theory and experiments
Vinodkumar Etacheri,Vinodkumar Etacheri,Cristiana Di Valentin,Jenny Schneider,Detlef W. Bahnemann,Detlef W. Bahnemann,Suresh C. Pillai +6 more
TL;DR: In this article, advances in the strategies for the visible light activation, origin of visible light activity, and electronic structure of various visible-light active TiO 2 photocatalysts are discussed in detail.
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Self-Cleaning Applications of TiO2 by Photo-Induced Hydrophilicity and Photocatalysis
TL;DR: In this article, Wenzel, Cassie-Baxter and Miwa-Hashimoto have discussed the fundamental principles of self-cleaning hydrophilic and hydrophobic surfaces, which can have various advanced applications in microfluidics, printing, photovoltaic, biomedical devices, and water purification.
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Review on the criteria anticipated for the fabrication of highly efficient ZnO-based visible-light-driven photocatalysts
TL;DR: In this article, the main advancements in overcoming the barriers accompanied by pure ZnO and the criteria for fabrication of effective visible-light-responsive (ZnO-based) photocatalysts are reviewed.
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Recent advances in photocatalysis for environmental applications
TL;DR: In this paper, the use of TiO2 photocatalysis for water and waste treatment, treating contaminants of emerging concern (CECs), pesticides, endocrine disrupters (EDs) and bacteria using both UV and visible light irradiations is discussed.
References
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Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
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Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides
TL;DR: Film and powders of TiO2-x Nx have revealed an improvement over titanium dioxide (TiO2) under visible light in optical absorption and photocatalytic activity such as photodegradations of methylene blue and gaseous acetaldehyde and hydrophilicity of the film surface.
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Efficient planar heterojunction perovskite solar cells by vapour deposition
TL;DR: It is shown that perovskite absorbers can function at the highest efficiencies in simplified device architectures, without the need for complex nanostructures.
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Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals
TL;DR: It is shown that disorder-engineered TiO2 nanocrystals exhibit substantial solar-driven photocatalytic activities, including the photo-oxidation of organic molecules in water and the production of hydrogen with the use of a sacrificial reagent.
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Plasmonic-metal nanostructures for efficient conversion of solar to chemical energy
TL;DR: Plasmon-enhanced water splitting on composite photocatalysts containing semiconductor and plasmonic-metal building blocks is focused on, and recently reported plasMon-mediated photocatallytic reactions on plAsmonic nanostructures of noble metals are discussed.
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