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Laser-Prepared CuZn Alloy Catalyst for Selective Electrochemical Reduction of CO2 to Ethylene
Langmuir ( IF 3.7 ) Pub Date : 2018-10-19 00:00:00 , DOI: 10.1021/acs.langmuir.8b02837
Yi Feng 1 , Zhe Li 1 , Hui Liu 1 , Cunku Dong 1 , Jiaqi Wang 1 , Sergei A. Kulinich 2 , Xiwen Du 1
Langmuir ( IF 3.7 ) Pub Date : 2018-10-19 00:00:00 , DOI: 10.1021/acs.langmuir.8b02837
Yi Feng 1 , Zhe Li 1 , Hui Liu 1 , Cunku Dong 1 , Jiaqi Wang 1 , Sergei A. Kulinich 2 , Xiwen Du 1
Affiliation
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Laser ablation in liquid was used to prepare homogeneous copper–zinc alloy catalysts that exhibited excellent selectivity for C2H4 in CO2 electroreduction, with faradaic efficiency values as high as 33.3% at a potential of −1.1 V (vs reversible hydrogen electrode). The high proximity of Cu and Zn atoms on the surface of the catalyst was found to facilitate both stabilization of the CO* intermediate and its transfer from Zn atoms to their Cu neighbors, where further dimerization and protonation occur to give rise to a large amount of ethylene product. The new homogeneous nanocatalyst, along with the mechanism proposed for its performance, may be very helpful for in-depth understanding of processes related to carbon dioxide electroreduction and conversion.
中文翻译：
激光制备用于选择性电化学还原CO 2为乙烯的CuZn合金催化剂
液体中的激光烧蚀用于制备均相的铜锌合金催化剂，该催化剂在CO 2电还原中对C 2 H 4表现出优异的选择性，在-1.1 V的电位下（相对于可逆氢电极）法拉第效率值高达33.3％。 。发现催化剂表面上的Cu和Zn原子高度接近，有利于CO *中间体的稳定及其从Zn原子向其Cu邻位的转移，在该处进一步发生二聚和质子化反应，从而导致大量的乙烯产品。新型的均相纳米催化剂及其性能提出的机理，对于深入了解与二氧化碳电还原和转化有关的过程可能非常有帮助。
更新日期：2018-10-19
中文翻译：
激光制备用于选择性电化学还原CO 2为乙烯的CuZn合金催化剂
液体中的激光烧蚀用于制备均相的铜锌合金催化剂，该催化剂在CO 2电还原中对C 2 H 4表现出优异的选择性，在-1.1 V的电位下（相对于可逆氢电极）法拉第效率值高达33.3％。 。发现催化剂表面上的Cu和Zn原子高度接近，有利于CO *中间体的稳定及其从Zn原子向其Cu邻位的转移，在该处进一步发生二聚和质子化反应，从而导致大量的乙烯产品。新型的均相纳米催化剂及其性能提出的机理，对于深入了解与二氧化碳电还原和转化有关的过程可能非常有帮助。
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