题目: | Construction of Single-Atom Platinum Catalysts Enabled by CsPbBr3 Nanocrystals |
作者: | Huicheng Hu,1,2,∥ Wenhao Guan,1,∥ Yafeng Xu,1,∥ Xuchun Wang,1,3 Linzhong Wu,1 Min Chen,1 Qixuan Zhong,1 Yong Xu,1 Youyong Li,1 Tsun-Kong Sham,3 Xiaohong Zhang,1,* Lu Wang,1,* Muhan Cao,1,* and Qiao Zhang1 |
单位: | 1Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123 Jiangsu, People’s Republic of China 2Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074 Hubei, People’s Republic of China 3Department of Chemistry, University of Western Ontario, London, ON N6A 5B7, Canada |
摘要: | Lead halide perovskite nanocrystals (CsPbX3 NCs) have been regarded as promising materials in photocatalysis. Combining metal single atoms with CsPbX3 NCs may be a practical way in exploring perovskite-based catalysts. However, such hybrids have not been achieved experimentally yet, mainly due to the weak interaction between the metal atom and the CsPbX3 surface. Here, we demonstrate that Pt single atoms can be deposited on CsPbBr3 NCs through a photoassisted approach, in which the surface was partially oxidized first, followed by the anchoring of Pt single atoms through the formation of Pt−O and Pt−Br bonds. The deposition of Pt single atoms can significantly change the photophysical properties of CsPbBr3 NCs by inducing the generation of deep trap states in the band gap. The as-prepared Pt-SA/CsPbBr3 can be used as efficient and durable catalysts for photocatalytic semi-hydrogenation of propyne. A CsPbBr3 nanocrystal might be a suitable substrate for anchoring other metal single atoms, such as Cu, Au, Ag, Pd, and so on. |
影响因子: | 14.588 |
分区情况: | 一区 |
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