异质结
电化学
吸附
电场
材料科学
再分配(选举)
化学物理
选择性
电流密度
电极
纳米技术
分析化学(期刊)
光电子学
物理化学
化学
物理
催化作用
量子力学
生物化学
色谱法
政治
政治学
法学
作者
Xin Zhao,Qingguo Feng,Mengjie Liu,Yuchao Wang,Wei Liu,Danni Deng,Jiabi Jiang,Xinran Zheng,Longsheng Zhan,Jinxian Wang,Zheng He,Yu Bai,Yingbi Chen,Xiong Xiao,Yongpeng Lei
出处
期刊:ACS Nano
[American Chemical Society]
日期:2024-03-24
卷期号:18 (13): 9678-9687
被引量:1
标识
DOI:10.1021/acsnano.4c01190
摘要
The unsatisfactory adsorption and activation of CO2 suppress electrochemical reduction over a wide potential window. Herein, the built-in electric field (BIEF) at the CeO2/In2O3 n-n heterostructure realizes the C1 (CO and HCOO-) selectivity over 90.0% in a broad range of potentials from -0.7 to -1.1 V with a maximum value of 98.7 ± 0.3% at -0.8 V. In addition, the C1 current density (-1.1 V) of the CeO2/In2O3 heterostructure with a BIEF is about 2.0- and 3.2-fold that of In2O3 and a physically mixed sample, respectively. The experimental and theoretical calculation results indicate that the introduction of CeO2 triggered the charge redistribution and formed the BIEF at the interfaces, which enhanced the interfacial adsorption and activation of CO2 at low overpotentials. Furthermore, the promoting effect was also extended to CeO2/In2S3. This work gives a deep understanding of BIEF engineering for highly efficient CO2 electroreduction over a wide potential window.
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