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纳米Cu2O表面改性控制CO2电化学还原制乙烯和合成气
作者:小柯机器人 发布时间:2022/1/12 15:07:23

南开大学程鹏团队报道了纳米Cu2O表面改性控制CO2电化学还原制乙烯和合成气。相关研究成果发表在2022年1月7日出版的《德国应用化学》。

在碳中和的大环境下,纳米Cu2O被认为是一种很有前途的电化学CO2还原反应催化剂(ECO2RR),其产品选择性的提高仍然需要相当大的努力。

该文中,研究人员提出了一种通过修饰纳米Cu2O表面来控制ECO2RR产品的有效策略,即通过还原剂控制的方法来控制暴露的面,以实现中性电解质中Cu2O基催化剂的最高C2H4选择性(法拉第效率=74.1%),在纳米Cu2O表面引入合适的金属有机骨架(MOF)涂层,以适当的H2:CO比完全获得合成气。

研究人员通过DFT计算说明了详细的机理和关键中间体。该系统策略有望控制ECO2RR产品,提高选择性,并为CO2管理和重要碳资源的绿色生产提供可靠的方法。

附:英文原文

Title: Surface Modification of Nano-Cu2O for Controlling CO2 Electrochemical Reduction to Ethylene and Syngas

Author: Haiqiang Luo, Bo Li, Jian-Gong Ma, Peng Cheng

Issue&Volume: 2022-01-07

Abstract: In the surroundings of carbon neutrality, nano-Cu2O is considered a promising catalyst for electrochemical CO2  reduction reaction (ECO2RR), whose improvements in product selectivity still require considerable efforts. Here, we present an efficient strategy for controlling the ECO2RR product by modifying the surface of nano-Cu2O, i.e., by controlling the exposed facets via a reductant-controlled method to achieve the highest C2H4  selectivity (faradaic efficiency = 74.1%) for Cu2O-based catalysts in neutral electrolytes, and introducing a well-suited metal-organic framework (MOF) coating on the surface of nano-Cu2O to obtain syngas completely with an appropriate H2:CO ratio. Detailed mechanism and key intermediate have been illustrated via DFT calculations. Our systematic strategy is expected to controlling the ECO2RR product, improving the selectivity, and providing a reliable method for CO2  management and the green production of important carbon resources.

DOI: 10.1002/anie.202116736

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202116736

期刊信息

Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx