CIESC Journal ›› 2022, Vol. 73 ›› Issue (8): 3576-3585.DOI: 10.11949/0438-1157.20220250

• Catalysis, kinetics and reactors • Previous Articles     Next Articles

Carbonized metal-organic framework for carbon dioxide reduction to ethylene and ethanol

Lei WANG1,2(), Yong JIANG1,2, Dazhong ZHONG1,2, Jiayuan LI3, Genyan HAO1,2, Qiang ZHAO1,2(), Jinping LI1,2()   

  1. 1.College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
    2.Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, Taiyuan 030024, Shanxi, China
    3.College of Materials Science and Engineering,Taiyuan University of Technology, Taiyuan 030024, Shanxi, China
  • Received:2022-02-24 Revised:2022-05-22 Online:2022-09-06 Published:2022-08-05
  • Contact: Qiang ZHAO, Jinping LI

碳化的MOF用于电催化还原二氧化碳制备乙烯和乙醇

王磊1,2(), 蒋勇1,2, 钟达忠1,2, 李佳元3, 郝根彦1,2, 赵强1,2(), 李晋平1,2()   

  1. 1.太原理工大学化学工程与技术学院,山西 太原 030024
    2.气体能源高效利用山西省重点实验室,山西 太原 030024
    3.太原理工大学材料科学与工程学院,山西 太原 030024
  • 通讯作者: 赵强,李晋平
  • 作者简介:王磊(1996—),男,硕士研究生,wanglei0533@link.tyut.cn
  • 基金资助:
    国家自然科学基金项目(21878202);山西省自然科学基金项目(201801D121052)

Abstract:

Electrochemical catalytic reduction of carbon dioxide provides an efficient route for energy storage. Exploring efficient electrocatalysts with high ethylene selectivity and high yields is highly desirable but still challenging. Here, porous Cu-Cu2O/C catalysts were prepared by simple carbonization of metal-organic framework (Cu-BTC) for efficient and selective electrocatalytic reduction of CO2 to C2+ products. The carbonized MOF showed efficient performance for CO2 reduction to C2+, with a maximum FE of 47.8% and a partial current density of 4.33 mA·cm-2 at a potential of -1.3 V (vs RHE). The results show that the lower carbonization temperature is helpful to preserve the morphology of Cu-MOF, and the porous properties can also improve the electrochemical active area of Cu-MOF, and thus improve its performance for the electrochemical reduction of CO2 to C2+ products.

Key words: Cu-BTC, carbonization, carbon dioxide reduction, electrocatalysis, ethylene

摘要:

电化学催化还原二氧化碳是一种有效的能源储存手段。探索具有高乙烯选择性和高产率的高效电催化剂是非常必要的,但仍然具有挑战性。通过对金属有机骨架(Cu-BTC)的简单碳化制备了多孔Cu-Cu2O/C催化剂,用于高效且选择性地电催化CO2还原为C2+产物。碳化的MOF表现出优异的还原CO2为C2+的性能,在电位为-1.3 V(vs RHE)时,C2+的最大法拉第效率(FE)为47.8%,其部分电流密度为4.33 mA·cm-2。研究表明,较低的碳化温度有助于保留Cu-MOF的形貌,抑制活性金属位点团聚,而多孔特性也能提升其电化学活性面积,进而提高其对CO2电化学还原为C2+产物的性能。

关键词: Cu-BTC, 碳化, 二氧化碳还原, 电催化, 乙烯

CLC Number: