Abstract
Herein, we reported a systematic investigation of splitting water over the InGaZnO4 (IGZO) based composite materials. One IGZO sample which modified with gold nanoparticles had the ability to generate hydrogen in simulated sunlight. The sample with an optimal H2 generation rate is 2Au@IGZO, which is 2.1 times and 1.4 times than the intrinsic sample under the ultraviolet light and simulated sunlight, respectively. This excellent photocatalytic performance can be attributed to the effect of gold quantum dots around 8 nm in diameter. The composite still maintained almost no attenuation of hydrogen generation performance after 55 h of ultraviolet light.
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