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Junbo Zhang Rongguan Yin Qi Shao Ting Zhu Xiaoqing Huang 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(17):5665-5669
Tuning surface electron transfer process by oxygen (O)‐vacancy engineering is an efficient strategy to develop enhanced catalysts for CO2 electroreduction (CO2ER). Herein, a series of distinct InOx NRs with different numbers of O‐vacancies, namely, pristine (P‐InOx), low vacancy (O‐InOx) and high‐vacancy (H‐InOx) NRs, have been prepared by simple thermal treatments. The H‐InOx NRs show enhanced performance with a best formic acid (HCOOH) selectivity of up to 91.7 % as well as high HCOOH partial current density over a wide range of potentials, largely outperforming those of the P‐InOx and O‐InOx NRs. The H‐InOx NRs are more durable and have a limited activity decay after continuous operating for more than 20 h. The improved performance is attributable to the abundant O‐vacancies in the amorphous H‐InOx NRs, which optimizes CO2 adsorption/activation and facilitates electron transfer for efficient CO2ER. 相似文献
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Linxing Meng Siyu Wang Fengren Cao Wei Tian Run Long Liang Li 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(20):6833-6837
Photoelectrochemical (PEC) water splitting is a promising strategy to convert solar energy into hydrogen fuel. However, the poor bulk charge‐separation ability and slow surface oxygen evolution reaction (OER) dynamics of photoelectrodes impede the performance. We construct In‐ and Zn/In‐doped SnS2 nanosheet arrays through a hydrothermal method. The doping induces the simultaneous formation of an amorphous layer, S vacancies, and a gradient energy band. This leads to elevated carrier concentrations, an increased number of surface‐reaction sites, accelerated surface‐OER kinetics, and an enhanced bulk‐carrier separation efficiency with a decreased recombination rate. This efficient doping strategy allows to manipulate the morphology, crystallinity, and band structure of photoelectrodes for an improved PEC performance. 相似文献
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H. J. Berthold B. G. Kruska W. Ludwig und R. Wartchow 《Fresenius' Journal of Analytical Chemistry》1980,304(4):266
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Orientational disorder in the lattice of the ClO 4 – -Anions in the cubic high-temperature phases of sodium and silver perchlorate相似文献