催化作用
材料科学
双金属片
纳米结构
可见光谱
光催化
苯甲醇
成核
纳米技术
纳米颗粒
溴化苄
等离子体子
化学工程
光化学
化学
光电子学
有机化学
工程类
作者
Benxia Li,Ting Gu,Mingzhen Tian,Junxin Wang,Peng Wang,Jianfang Wang,Jimmy C. Yu
出处
期刊:ACS Nano
[American Chemical Society]
日期:2014-07-23
卷期号:8 (8): 8152-8162
被引量:223
摘要
Driving catalytic reactions with sunlight is an excellent example of sustainable chemistry. A prerequisite of solar-driven catalytic reactions is the development of photocatalysts with high solar-harvesting efficiencies and catalytic activities. Herein, we describe a general approach for uniformly coating ceria on monometallic and bimetallic nanocrystals through heterogeneous nucleation and growth. The method allows for control of the shape, size, and type of the metal core as well as the thickness of the ceria shell. The plasmon shifts of the Au@CeO2 nanostructures resulting from the switching between Ce(IV) and Ce(III) are observed. The selective oxidation of benzyl alcohol to benzaldehyde, one of the fundamental reactions for organic synthesis, performed under both broad-band and monochromatic light, demonstrates the visible-light-driven catalytic activity and reveals the synergistic effect on the enhanced catalysis of the Au@CeO2 nanostructures.
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