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[1]罗海彬,曹庆成,覃远航*.Co掺杂ZIF-8衍生合成高效Co-N-C氧还原催化剂的研究[J].武汉工程大学学报,2023,45(01):35-41.[doi:10.19843/j.cnki.CN42-1779/TQ.202204025]
　LUO Haibin,CAO Qincheng,QIN Yuanhang*.Cobalt-Doped ZIF-8-Derived High-Performance Co-N-COxygen Reduction Catalyst[J].Journal of Wuhan Institute of Technology,2023,45(01):35-41.[doi:10.19843/j.cnki.CN42-1779/TQ.202204025]
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Co掺杂ZIF-8衍生合成高效Co-N-C氧还原
催化剂的研究
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
45
期数:
2023年01期
页码:
35-41
栏目:
化学与化学工程
出版日期:
2023-02-28

文章信息/Info

Title:
Cobalt-Doped ZIF-8-Derived High-Performance Co-N-C
Oxygen Reduction Catalyst
文章编号:
1674 - 2869（2023）01 - 0035 - 07
作者:
罗海彬; 曹庆成; 覃远航*
武汉工程大学化工与制药学院，绿色化工过程教育部重点实验室（武汉工程大学），
新型反应器与绿色化学工艺湖北省重点实验室（武汉工程大学），湖北 武汉 430205
Author(s):
LUO Haibin; CAO Qincheng ;  QIN Yuanhang*
School of Chemical Engineering and Pharmacy，Wuhan Institute of Technology；Key Laboratory of Green Chemical Engineering Process （Wuhan Institute of Technology），Ministry of Education；Hubei Key Laboratory of Novel Reactor and Green Chemical Technology（Wuhan Institute of Technology），Wuhan 430205，China

关键词:
氧还原反应; 非贵金属催化剂; Co-N-C; 溶剂热法
Keywords:
oxygen reduction reaction;  non-precious metal catalyst;  Co-N-C;  solvothermal method
分类号:
TM911.4
DOI:
10.19843/j.cnki.CN42-1779/TQ.202204025
文献标志码:
A
摘要:
在合成中添加Co（NO3）2·6H2O制备钴掺杂的2-甲基咪唑锌盐材料，通过优化钴掺杂量及热解温度得到了具有高比表面积（888 m2/g）且同时存在微孔和介孔（孔体积为0.591 cm3/g）的高效Co-N-C催化剂。电化学测试表明：Co-N-C催化剂具有良好的酸性氧还原催化活性、稳定性和抗甲醇毒化性能，其在0.1 mol/L HClO4溶液中的氧还原途径主要是4电子反应过程，半波电位达到0.807 V，稳定性可与商业Pt/C催化剂相媲美。物理表征结果表明：钴元素成功地掺杂到Co-N-C催化剂中，较高的石墨化程度、良好的导电性、丰富的孔结构和Co-Nx活性位点，极大地提高了Co-N-C催化剂在酸性条件下的氧还原催化性能。本工作为合成ZIFs衍生的高效氧还原催化剂提供了新的思路。

Abstract:
Cobalt-doped 2-methylimidazole zinc salt material was prepared by adding （NO3）2·6H2O in the synthesis. The Co-N-C catalyst with high specific surface area （888 m2/g） and coexistence of micropore and mesoporous structure （pore volume 0.591 cm3/g） was synthesized by optimizing the amount of cobalt doped and the pyrolysis temperature. Electrochemical tests show that Co-N-C catalyst has good catalytic activity and stability for oxygen reduction and good resistance to methanol poisoning in acidic media. The oxygen reduction catalytic process of Co-N-C catalyst in 0.1 mol/L perchloric acid solution is mainly via a 4-electron pathway， and the half-wave potential reaches 0.807 V. It is found that the stability of the catalyst is almost the same as that of commercial Pt/C catalyst. The physical characterization results show that the metal cobalt element is successfully doped into the Co-N-C system， generating high degree of graphitization， good conductivity， and rich porous structure and Co-Nx active sites， which greatly improves the catalytic performance of Co-N-C under acidic conditions. This work provides a new idea for the synthesis of ZIFs-derived high-performance oxygen reduction catalysts.

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相似文献/References:

[1]毛惠东,李 芳,覃远航*.Fe-Co-N-C氧还原催化剂的制备及性能[J].武汉工程大学学报,2023,45(02):148.[doi:10.19843/j.cnki.CN42-1779/TQ.202204026]
　MAO Huidong,LI Fang,QIN Yuanhang*.Synthesis and Properties of Fe-Co-N-C Catalysts forOxygen Reduction Reaction[J].Journal of Wuhan Institute of Technology,2023,45(01):148.[doi:10.19843/j.cnki.CN42-1779/TQ.202204026]

备注/Memo

备注/Memo:
收稿日期：2022-05-12
基金项目：国家自然科学基金（21306144）
作者简介：罗海彬，硕士研究生。E-mail：[email protected]
*通讯作者：覃远航，博士，教授。E-mail：[email protected]
引文格式：罗海彬，曹庆成，覃远航. Co掺杂ZIF-8衍生合成高效Co-N-C氧还原催化剂的研究［J］. 武汉工程大学学报，2023，45（1）：35-41.

更新日期/Last Update: 2023-03-14