物理化学学报2018，Vol.34Issue(4)：414-423,10.DOI:10.3866/PKU.WHXB201708283
Au/TiO2/MoS2等离子体复合光催化剂的制备及其增强光催化产氢活性
Preparation of Au/TiO2/MoS2 Plasmonic Composite Photocatalysts with Enhanced Photocatalytic Hydrogen Generation Activity
摘要
Abstract
Au/TiO2/MoS2 plasmonic composite photocatalysts were synthesized via deposition-precipitation with urea.The photocatalytic activities of the prepared samples were evaluated by performing hydrogen production experiments under Xe lamp irradiation with a 10％ (φ,volume fraction) glycerol aqueous solution as the sacrificial agent.The results showed that the optimal content of MoS2 in the Au/TiO2/MoS2 composite is 0.1％ (w,mass fraction) and the corresponding H2 production rate was 708.85 iJmol·h-1,which was almost 11 times higher than that of TM6.0 with the strongest photocatalytic activity in the all binary TiO2/MoS2 composites.The enhanced photocatalytic activity of the ternary Au/TiO2/MoS2 composites is mainly due to the surface plasmon resonance of the supported Au nanoparticles absorbed on the TiO2/MoS2 layered composite,which show an intense absorption maximum centered around 550-560 nm and induce the photoexcitation of electrons.Meanwhile,the electrons excited by surface plasmon resonance of Au could be injected into the conduction band of TiO2,and they were then transferred to the edges of MoS2 for catalyzing the production of H2.关键词
TiO2纳米片/层状结构/Au纳米颗粒/等离子体/光催化产氢Key words
TiO2nanosheet/Layered structure/Au nanoparticle/Plasma/Photocatalytic H2 production分类
化学化工引用本文复制引用
杜新华,李阳,殷辉,向全军..Au/TiO2/MoS2等离子体复合光催化剂的制备及其增强光催化产氢活性[J].物理化学学报,2018,34(4):414-423,10.基金项目
The project was supported by the National Natural Science Foundation of China (21403079,51672099) and Fundamental Research Funds for the Central Universities,China (2662015PY039,2662015PY210).国家自然科学基金(21403079,51672099)及中央高校基本科研基金(2662015PY039,2662015PY210)资助项目 （21403079,51672099）
