光催化
材料科学
可见光谱
纳米复合材料
表面等离子共振
等离子体子
光化学
纳米颗粒
吸收(声学)
化学工程
纳米技术
光电子学
催化作用
化学
复合材料
有机化学
工程类
作者
Shipeng Wan,Mengqing Chen,Man Ou
标识
DOI:10.1016/j.jcou.2019.06.024
摘要
Herein, Ag decorated SrTiO3 nanocomposites (ASTO) were fabricated by solvothermal strategy. The resultant ASTO nanocomposites possess the broad plasmonic resonance absorption for visible light, achieving the obvious visible light photocatalytic CO2 reduction and H2 evolution performance. CO, CH4 and H2 were detected for CO2 reduction, but the photocatalytic system exhibits a high CO selectivity. The A0.5STO achieves the largest CO generation amount of 80.24 μmol·g−1. Moreover, the ASTO nanocomposite also shows an enhanced visible light photocatalytic H2 evolution rate of 264.5 μmol·g−1·h−1. The remarkable photocatalytic reduction performance should belong to the improved visible light absorption capacity benefitted from the localized surface plasmon resonance, and the improved electron extraction and transfer between Ag and STO in ASTO nanocomposite. Admittedly, the abundant reactive electrons over ASTO nanocomposites achieved efficient photocatalytic CO2 reduction and H2 evolution performance under visible light. Finally, photocatalytic reduction mechanism was investigated. The work provides a feasible controlled synthesis approach to fabricate plasmonic Ag decorated perovskite nanocomposite, achieving efficient visible light photocatalytic CO2 reduction and H2 generation.
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