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Date of Publication:2020-01-01

Journal:Modern Chemical Industry

Volume:40

Issue:12

Page Number:168-172

ISSN No.:0253-4320

Key Words:"titanium dioxidetitanium; mixed-crystal phase; photocatalysis; water splitting; hydrogen production"

CN No.:11-2172/TQ

Abstract:Mixed-crystal titanium dioxide(m-TiO_2)samples with A-type,A + B-type and A + B + R-type mixedcrystals are synthesized by using single titanium source or two titanium sources as raw materials via hydrothermal method.It is found that the photocatalytic performance of the samples in hydrogen production can be improved by adjusting the content of Brookite in the mixed-crystal m-TiO_2.The hydrogen production rate over m-TiO_2 with a crystal phase composition of 56%A+40%B+4%R can reach as high as 251 mmol·g~(-1)·h under ultraviolet irradiation.As m(rGO)/ m(TiO_2)is 0.01, the hydrogen production rate over rGO-m-TiO_2 is 1.35 times higher than that over m-TiO_2 under visible light irradiation.The rGO-m-TiO_2 exhibits good stability under full-band irradiation at a wave-length of 350-850 nm, achieving a total hydrogen production of 152 mmol·g~(-1) in 60 h.

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