武汉理工大学 化学化工与生命科学学院,湖北 武汉 430070
章 寅,男,硕士生,现从事电化学相关研究。E-mail:1403620648@qq.com
E-mail: chemlixi@whut.edu.cn
收稿:2021-10-30,
纸质出版:2022-04-24
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章寅,侯昱竹,俞峥松, 等.Cu-MOF-199/铜硫化合物的制备及其电催化还原CO2性能[J].武汉大学学报(理学版),2022,68(2):203-208. DOI:10.14188/j.1671-8836.2021.0296.
ZHANG Yin,HOU Yuzhu,YU Zhengsong,et al.Preparation of Cu-MOF-199/Copper Sulfide and Its Electrocatalytic Performance on CO2 Reduction [J].J Wuhan Univ (Nat Sci Ed),2022,68(2):203-208. DOI:10.14188/j.1671-8836.2021.0296(Ch).
章寅,侯昱竹,俞峥松, 等.Cu-MOF-199/铜硫化合物的制备及其电催化还原CO2性能[J].武汉大学学报(理学版),2022,68(2):203-208. DOI:10.14188/j.1671-8836.2021.0296. DOI:
ZHANG Yin,HOU Yuzhu,YU Zhengsong,et al.Preparation of Cu-MOF-199/Copper Sulfide and Its Electrocatalytic Performance on CO2 Reduction [J].J Wuhan Univ (Nat Sci Ed),2022,68(2):203-208. DOI:10.14188/j.1671-8836.2021.0296(Ch). DOI:
以硫代乙酰胺为硫源,采用温和的溶液浸渍法将金属有机框架材料Cu-MOF-199部分硫化,得到Cu-
MOF-199/铜硫化合物(Cu
x
S)复合材料Cu-MOF/Cu
x
S,并将其用于电催化还原CO
2
的研究,探究了硫化时间对其催化活性的影响。研究结果显示,当硫化时间为5 h时,Cu-MOF/Cu
x
S复合材料的电催化活性最高,并表现出优异的甲酸选择性,在-0.7 V(vs. RHE)时甲酸的法拉第效率可达81.6%,同时有着较好的稳定性,催化电流在10 h内无明显衰减。
In this work
the metal-organic-framework material
Cu-MOF-199
was partially sulfurized via a moderate solution infiltration method with thioacetamide as the sulfur source to obtain Cu-MOF-199/copper sulfide composites (Cu-MOF/Cu
x
S). The as-prepared catalyst was applied to electrocatalyze the reduction of CO
2
and the effect of the sulfuration time on the catalytic activity was investigated. The results showed that when the sulfuration time was 5 h
Cu-MOF/Cu
x
S exhibited the highest electrocatalytic activity and an excellent selectivity to formic acid. The Faraday efficiency of formic acid reached 81.6% at -0.7 V (vs. RHE). In the meantime
the catalytic current did not show apparent decay within 10 h
indicating a good stability.
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