催化作用
化学
石墨烯
纳米颗粒
选择性
乙二醇
产量(工程)
化学工程
二甲基甲酰胺
碳氢化合物
溶剂
氧化物
无机化学
格式化
纳米技术
有机化学
材料科学
冶金
工程类
作者
Şehmus Özden,Laurent Delafontaine,Tristan Asset,Shengyuan Guo,Kai A. Filsinger,Rodney D. Priestley,Plamen Atanassov,Craig B. Arnold
标识
DOI:10.1016/j.jcat.2021.10.014
摘要
The catalytic reduction of carbon dioxide (CO2) to hydrocarbon fuels offers a tremendous opportunity for a transformational impact on both global energy and environmental sustainability. To enhance the CO2 reduction process, the design and synthesis of novel and efficient catalytic materials with control-over properties are needed. The solvent used in the synthesis of these materials can play a crucial role in tailoring the material properties resulting in changes to their catalytic performance. However, the field still lacks a systematic analysis of the specific effect for different solvents. Here, we report the role of water, ethanol (EtOH), ethylene glycol (EG), Dimethylformamide (DMF), and γ-Butyrolactone (GBL) on the synthesis of reduced graphene oxide (rGO)-copper nanoparticles (CuNP) electrocatalysts used in CO2 reduction reactions (CO2RR). As these solvents contain different terminal groups and molecular sizes, we observed a variation in the d-spacing of the rGO, surface area, nanoparticle yield, and defect density, and characterized the corresponding change in the CO2RR activity. The use of DMF results in higher porosity, d-spacing, yield of CuNP, surface area and defect density which lead to comparatively higher efficiency and selectivity of and selectivity of 19.5 % and 28.4 % for formate and CO, respectively.
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