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李彦光教授、王璐教授及其合作者在Angew. Chem. Int. Ed.上发表论文
发布时间:2021-09-02 点击:10

题目:

Size-Dependent Selectivity of Electrochemical CO2 Reduction on Converted In2O3 Nanocrystals


作者:

Yang Huang,a,# Xinnan Mao,b,# Guotao Yuan,b Duo Zhang,c Binbin Pan,b Jun Deng,b Yunru Shi,a Na Han,b Chaoran Li,b Liang Zhang,b Lu Wang,b,* Lin He,a,* Youyong Li,b and Yanguang Li,b,*


单位:

a State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP), Chinese Academy of Sciences, Lanzhou 730000 (China)

b Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University, Suzhou 215123, China (China).

c State Key Laboratory of Radiation Medicine and Protection and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123 (China)


摘要:

The size modulation of catalyst particles represents a useful dimension to tune catalytic performances by impacting not only their surface areas but also local electronic structures. It, however, has remained inadequately explored and poorly elucidated. Here, we report the interesting size-dependent selectivity of electrochemical CO2 reduction on In2O3 nanocrystals. 5-nm nanoparticles and 15-nm nanocubes with focused size distribution are prepared via a facile solvothermal reaction in oleylamine by carefully controlling a set of experimental parameters. They serve as the precatalysts, and are reduced to In nanocrystals while largely inherit the original size feature during electrochemical CO2 reduction. Catalyst derived from 15-nm nanocubes exhibits greater formate selectivity (>95%) at lower overpotential and negligible side reactions compared to bulk-like samples (indium foil and 200- nm cubes) as well as the catalyst derived from smaller 5-nm nanoparticles. This unique size dependence is rationalized as a result of the competition among different reaction pathways by our theoretical computations. Smaller is not always better in the catalyst design.


影响因子:

12.959


分区情况:

一区


链接:

https://doi.org/10.1002/anie.202105256


责任编辑:向丹婷


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