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- W4285209095 abstract "Photocatalytic CO2 reduction is one of the representative artificial photosynthetic reactions in which light energy is converted to chemical energy as storable chemicals. CO2 can be used as a carbon source to create a route of a carbon cycle through the photocatalytic reaction. In this reaction, water has to be used as a hydrogen source and an electron donor accompanied with formation of oxygen molecules. In Sects. 45.2 and 45.3, basic points of photocatalytic CO2 reduction are explained. Schemes of the photocatalytic CO2 reduction using single-particulate and two-particulate systems consisting of heterogeneous photocatalysts (semiconductor photocatalysts) are indicated. The mechanism is explained in detail using the single-particulate system. Points that should be paid attention are stoichiometry of products, a carbon source, durability of the reaction, a turnover number, photoresponse, and efficiencies of an apparent quantum yield and solar energy conversion. Those points are mentioned to evaluate correctly the photocatalytic reaction. In Sect. 45.4, single-particulate metal oxide photocatalysts that are active for CO2 reduction using water as an electron donor are introduced. Effects of Ag cocatalyst and hydrogencarbonate on the photocatalytic activities, and the reaction mechanism are discussed using NaTaO3:Ba with perovskite structure, BaLa4Ti4O15 with layered perovskite structure, and KCaSrTa5O15 with tungsten bronze structure as a case study of photocatalytic CO2 reduction. In Sect. 45.5, visible light responsive metal sulfide photocatalysts are introduced for sacrificial CO2 reduction that is a half reaction of CO2 reduction of an uphill reaction using water as an electron donor. Then, Z-scheme systems consisting of the metal sulfide photocatalyst, CuGaS2, as a CO2 reducing photocatalyst, TiO2 and BiVO4 as an O2-evolving photocatalyst, and a reduced graphene oxide (RGO) as a solid-electron mediator are shown. The CuGaS2-BiVO4-RGO system works for photocatalytic CO2 reduction under visible light using water as an electron donor in a simple suspension system without any additives." @default.
- W4285209095 created "2022-07-14" @default.
- W4285209095 creator A5014036614 @default.
- W4285209095 date "2022-01-01" @default.
- W4285209095 modified "2023-10-14" @default.
- W4285209095 title "Heterogeneous Photocatalyst for CO2 Reduction" @default.
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- W4285209095 doi "https://doi.org/10.1007/978-3-030-63713-2_45" @default.
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