TY - GEN
T1 - Development of photocatalysts for solar hydrogen production
AU - Kudo, Akihiko
PY - 2009
Y1 - 2009
N2 - Photocatalytic water splitting is a challenging reaction because it is an ultimate solution to energy and environmental issues. Recently, many new powdered photocatalysts for water splitting have been developed. For example, a NiO (0.2 wt %)/NaTaO3:La (2%) photocatalyst with a 4.1-eV band gap showed high activity for water splitting into H2 and O2 with an apparent quantum yield of 56% at 270 nm. Overall water splitting under visible light irradiation has been achieved by construction of a Z-scheme photocatalysis system employing visible-light-driven photocatalysts, Ru/SrTiO3:Rh and BiVO4 for H2 and O2 evolution, and an Fe3+/ Fe2+ redox couple as an electron relay. Moreover, highly efficient sulfide photocatalysts for solar hydrogen production in the presence of electron donors were developed by making solid solutions of ZnS with AgInS2 and CuInS2 of narrow band gap semiconductors. Thus, the database of powdered photocatalysts for water splitting has become plentiful.
AB - Photocatalytic water splitting is a challenging reaction because it is an ultimate solution to energy and environmental issues. Recently, many new powdered photocatalysts for water splitting have been developed. For example, a NiO (0.2 wt %)/NaTaO3:La (2%) photocatalyst with a 4.1-eV band gap showed high activity for water splitting into H2 and O2 with an apparent quantum yield of 56% at 270 nm. Overall water splitting under visible light irradiation has been achieved by construction of a Z-scheme photocatalysis system employing visible-light-driven photocatalysts, Ru/SrTiO3:Rh and BiVO4 for H2 and O2 evolution, and an Fe3+/ Fe2+ redox couple as an electron relay. Moreover, highly efficient sulfide photocatalysts for solar hydrogen production in the presence of electron donors were developed by making solid solutions of ZnS with AgInS2 and CuInS2 of narrow band gap semiconductors. Thus, the database of powdered photocatalysts for water splitting has become plentiful.
UR - http://www.scopus.com/inward/record.url?scp=84903720966&partnerID=8YFLogxK
U2 - 10.1142/9789812838025_0003
DO - 10.1142/9789812838025_0003
M3 - Conference contribution
AN - SCOPUS:84903720966
SN - 9812838015
SN - 9789812838018
T3 - Materials Issues in a Hydrogen Economy - Proceedings of the International Symposium
SP - 46
EP - 53
BT - Materials Issues in a Hydrogen Economy - Proceedings of the International Symposium
PB - World Scientific Publishing Co. Pte Ltd
T2 - 2007 International Symposium on Materials Issues in a Hydrogen Economy
Y2 - 12 November 2007 through 15 November 2007
ER -