期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 24, 页码 12407-12415出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ta03252h
关键词
-
资金
- National Natural Science Foundation of China (NSFC) [21537003, 21477085]
Photoelectrocatalytic conversion of biomass and its derivatives is a very significant and promising strategy for energy production. The selective oxidation of biomass alcohol to the corresponding aldehydes is an important class of biomass conversion reactions. In this study, a Z-scheme type solar-driven dual photoelectrode photoelectrochemical cell was used for the simultaneous selective oxidation of benzyl alcohol, which was a model biomass alcohol to benzaldehyde reaction, for hydrogen production promotion using Au/TiO2 nanotube photonic crystals (Au/TiO2 NTPC) as the photoanode. The results show that the Au/TiO2 NTPC photoanode exhibits excellent photoelectrochemical performance and can efficiently conduct charge transport. The conversion of benzyl alcohol is as high 84.68%, whereas selectivity can reach more than 99%. The high conversion rate is attributed to the improvement in the photoelectrocatalytic performance due to the in situ doping of Au nanoparticles. In addition to the Au nanoparticles, O-2 is an indispensable factor for the high selectivity. The simultaneous hydrogen production at the cathode can reach 143.83 mu mol cm(-2). The results show that the anodic oxidation reaction can promote hydrogen production and the hydrogen production efficiency increases with the oxidation rate. This model reaction can also be applied to a series of biomass alcohol selective oxidations. This study achieves simultaneous efficient selective access to hydrocarbon fuels and hydrogen and reveals a novel, sustainable and green energy production idea and direction for development.
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