Abstract
Macroporous GaN/ZnO solid solution photocatalyst is synthesized through a novel sol-gel method under mild conditions. The performance of as-synthesized solid solution photocatalyst is evaluated for decomposition of gaseous 2-propanol (IPA). It is found that due to enhancement in both the adsorption to gaseous IPA and the absorbance to visible light, the porous GaN/ZnO solid solution exhibits a good photocatalytic performance for IPA decomposition. Moreover, the mechanism for photocatalytic degradation IPA over porous GaN/ZnO solid solution is also investigated in comparison with those for the two end materials ZnO and GaN. The trapping effects with different scavengers prove that both the photoexcited electrons and holes affect the IPA photodegradation process, simultaneously.
Highlights
Macroporous GaN/ZnO solid solution photocatalyst is synthesized through a novel sol-gel method under mild conditions
The mechanism for photocatalytic degradation IPA over porous GaN/ZnO solid solution is investigated in comparison with those for the two end materials ZnO and GaN
One method was developed by Maeda and Domen et al who used a simple sintering process to get the particulate GaN/ZnO solid solution, the surface area of which was very low.[12,13]
Summary
Macroporous GaN/ZnO solid solution photocatalyst is synthesized through a novel sol-gel method under mild conditions. The mechanism for photocatalytic degradation IPA over porous GaN/ZnO solid solution is investigated in comparison with those for the two end materials ZnO and GaN.
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