摘要
目前,能源和环境问题备受关注。一方面,大气层中二氧化碳的平衡受到破坏,其含量不断增加,严重影响了地球生态环境。另一方面,催化剂促进二氧化碳向能源分子的转化,不仅缓解了环境压力,也从一定程度上减轻了能源短缺问题。二氧化碳的资源化再利用在解决能源危机与环境问题方面意义深远,而产物选择性、电流效率以及催化剂的稳定性是目前研究电催化二氧化碳还原反应的主要难点。本文就异相电催化二氧化碳还原的研究现状进行了综述,对二氧化碳还原的电解质体系、主要产物、电极材料的选择和影响以及二氧化碳电化学还原面临的挑战及应对策略等进行了讨论。同时,对开发出成本低、稳定性好、效率高、选择性高的催化剂,尤其是直接电催化二氧化碳还原转化为醇和碳氢化合物的催化策略等进行了展望。
Nowadays, energy crisis and environmental issues attract wide attention. On one hand, the concentration of carbon dioxide increases in atmosphere year by year which has already threaten the ecosystem on earth. On the other hand, converting carbon dioxide to fuel molecules with catalysts releases not only environmental issues but also reduces the energy shortage. The conversation and utilization of carbon dioxide by electrochemistry is a promising solution for energy crisis and environmental issues. However, the selectivity, current efficiency and stability of electrocatalysts are the main difficulties faced by the commercialization of carbon dioxide conversation. Based on the review of the research progress on heterogeneous electrochemical reduction of carbon dioxide, the relationships among the reduction products, faraday efficiency of reduction products and electrocatalysts, as well as the possible solutions by the electrocatalytic reduction of carbon dioxide were discussed. For the purpose of commercialization of carbon dioxide conversation and utilization, eletctrocatalysts with low-price, good stability, high efficiency and selectivity towards products should be developed. More importantly, researches should find a way to convert carbon dioxide to alcohol or hydrocarbon fuels efficiently.
作者
赖洁
杨楠
袁健发
曾嘉瑛
马丽
LAI Jie;YANG Nan;YUAN Jian-fa;ZENG Jia-ying;MA Li(College of Chemistry and Materials Science,Jinan University,Guangzhou 510632,China)
出处
《新能源进展》
2019年第5期429-435,共7页
Advances in New and Renewable Energy
基金
广东省自然科学基金项目(2017A030310409)
暨南大学科研培育与创新基金研究项目(21617319)
关键词
电催化
二氧化碳还原
催化剂
选择性
electrocatalysis
reduction of carbon dioxide
catalysts
selectivity
