Electrochemical reduction of CO2 has been widely investigated at copper surfaces due to the significant quantities of hydrocarbons generated, usually consisting of methane and ethylene. Hori et al conducted extensive studies on the electrochemical reduction of CO2 and CO at copper electrodes suggesting that the adsorption of hydrogen species is structure-sensitive and surface roughening is likely to introduce surface defect such as steps and vacancies favorable for reaction of adsorbed hydrogen atoms. Following these studies, Tang. et al reported on the effect of surface morphology in controlling the selectivity of polycrystalline copper for CO2 reduction. The roughened surfaces were found to have higher selectivity towards hydrocarbon generation, attributed to the greater abundance of uncoordinated sites. DFT calculations further suggested that these sites are more likely for CO2 activation and reduction.
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机译：由于产生的显着量的烃类，通常由甲烷和乙烯组成，CO2的电化学还原在铜表面上被广泛研究。 Hori等人对铜电极的CO 2和CO的电化学减少进行了广泛的研究表明，氢物质的吸附是结构敏感的，表面粗糙化可能引入表面缺陷，例如具有吸附氢原子的反应的步骤和空位。在这些研究之后，唐。 et al报道了表面形态对控制多晶铜的选择性进行CO2减少的影响。发现粗糙表面具有更高的烃生成选择性，归因于更大的未加工位点。 DFT计算进一步表明这些位点更可能是CO 2激活和减少。
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