Journal ArticleDOI
Characterization of Rh−Cr Mixed-Oxide Nanoparticles Dispersed on (Ga1-xZnx)(N1-xOx) as a Cocatalyst for Visible-Light-Driven Overall Water Splitting
Kazuhiko Maeda,Kentaro Teramura,Daling Lu,Tsuyoshi Takata,Nobuo Saito,Yasunobu Inoue,Kazunari Domen +6 more
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TLDR
Structural analyses reveal that the activity of this photocatalyst is strongly dependent on the generation of trivalent Rh-Cr mixed-oxide nanoparticles with optimal composition and distribution.Abstract:
The structure of Rh−Cr mixed-oxide (Rh2-yCryO3) nanoparticles dispersed on (Ga1-xZnx)(N1-xOx) is characterized by electron microscopy and X-ray spectroscopy. The Rh2-yCryO3 nanoparticle is an efficient cocatalyst for photocatalytic overall water splitting on the (Ga1-xZnx)(N1-xOx) solid solution and is loaded onto the catalyst by impregnation from an aqueous solution containing Na3RhCl6·2H2O and Cr(NO3)3·9H2O followed by calcination in air. Impregnation of the (Ga1-xZnx)(N1-xOx) with 1 wt % Rh and 1.5 wt % Cr followed by calcination at 623 K for 1 h provides the highest photocatalytic activity. Structural analyses reveal that the activity of this photocatalyst is strongly dependent on the generation of trivalent Rh−Cr mixed-oxide nanoparticles with optimal composition and distribution.read more
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Semiconductor-based Photocatalytic Hydrogen Generation
TL;DR: Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting and its Applications d0 Metal Oxide Photocatalysts 6518 4.4.1.
Journal ArticleDOI
Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway
Juan Liu,Yang Liu,Naiyun Liu,Yuzhi Han,Xing Zhang,Hui Huang,Yeshayahu Lifshitz,Yeshayahu Lifshitz,Shuit-Tong Lee,Jun Zhong,Zhenhui Kang +10 more
TL;DR: The design and fabrication of a metal-free carbon nanodot–carbon nitride (C3N4) nanocomposite is reported and its impressive performance for photocatalytic solar water splitting is demonstrated.
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Advanced Nanoarchitectures for Solar Photocatalytic Applications
TL;DR: UV-Visible ار راد ن .د TiO2 ( تیفرظ راون مان هب نورتکلا یاراد لماش VB و ) رگید اب لاقتنا VB (CO2) .
Journal ArticleDOI
Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting
TL;DR: This review for the first time summarizes all the developed earth-abundant cocatalysts for photocatalytic H2- and O2-production half reactions as well as overall water splitting.
Journal ArticleDOI
Inorganic Materials as Catalysts for Photochemical Splitting of Water
TL;DR: A review of the known inorganic catalysts with a focus on structure-activity relationships is given in this article, where the first water splitting system based on TiO2 and Pt was proposed by Fujishima and Honda in 1972.
References
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Journal ArticleDOI
Photocatalyst releasing hydrogen from water
Kazuhiko Maeda,Kentaro Teramura,Daling Lu,Tsuyoshi Takata,Nobuo Saito,Yasunobu Inoue,Kazunari Domen +6 more
TL;DR: An advance in the catalysis of the overall splitting of water under visible light is described: the new catalyst is a solid solution of gallium and zinc nitrogen oxide, modified with nanoparticles of a mixed oxide of rhodium and chromium, which functions as a promising and efficient photocatalyst in promoting the evolution of hydrogen gas.
Journal ArticleDOI
GaN:ZnO Solid Solution as a Photocatalyst for Visible-Light-Driven Overall Water Splitting
Kazuhiko Maeda,Tsuyoshi Takata,Michikazu Hara,Nobuo Saito,Yasunobu Inoue,Hisayoshi Kobayashi,Kazunari Domen +6 more
TL;DR: This is the first example of achieving overall water splitting by a photocatalyst with a band gap in the visible light region, which opens the possibility of new non-oxide-type photocatalysts for energy conversion.
Journal ArticleDOI
Oxysulfide Sm2Ti2S2O5 as a Stable Photocatalyst for Water Oxidation and Reduction under Visible Light Irradiation (λ ≤ 650 nm)
Akio Ishikawa,Tsuyoshi Takata,Junko N. Kondo,Michikazu Hara,Hisayoshi Kobayashi,Kazunari Domen +5 more
TL;DR: In this article, a Ti-based oxysulfide, Sm(2,Ti(2)S(2),O(5), was studied as a visible light-driven photocatalyst.
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Photocatalytic Activities of Noble Metal Ion Doped SrTiO3 under Visible Light Irradiation
TL;DR: In this article, Mn-, Ru-, Rh-, and Ir-doped SrTiO3 possessed intense absorption bands in the visible light region due to excitation from the discontinuous levels formed by the dopants to the conduction band of the host.
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Visible-light-response and photocatalytic activities of TiO2 and SrTiO3 photocatalysts codoped with antimony and chromium
Hideki Kato,Akihiko Kudo +1 more
TL;DR: In this article, the authors showed that the activity of a photocatalyst with antimony and chromium was remarkably higher than that of one with only chromium and that the charge balance was kept by codoping of Sb5+ and Cr3+ ions, resulting in the suppression of formation of Cr6+ ions and oxygen defects in the lattice.