银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究

引用本文: 黄燕平, 苑红艳, 张健, 杨亚辉, 刘洪涛. 银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究[J]. 分析化学, 2017, 45(9): 1297-1302. doi: 10.11895/j.issn.0253-3820.170279 shu

Citation: HUANG Yan-Ping, YUAN Hong-Yan, ZHANG Jian, YANG Ya-Hui, LIU Hong-Tao. Preparation and Properties of Tremella-like Fe-N-C Composite Catalyst for Oxygen Reduction Reaction[J]. Chinese Journal of Analytical Chemistry, 2017, 45(9): 1297-1302. doi: 10.11895/j.issn.0253-3820.170279 shu

银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究

1.
中南大学化学化工学院锰资源高效清洁利用湖南省重点实验室, 长沙 410083;2 湖南农业大学资源环境学院, 长沙 410128
基金项目:
本文系国家自然科学基金项目（No.21071153）、湖南省科技计划项目（Nos.2016TP1007，2014FJ2007）和中南大学贵重仪器设备开放共享基金项目（No.CSUZC201726）资助

摘要: 以无机铁盐和邻苯二胺为基础原料，经铁（Ⅲ）基螯合前驱体热解反应，制备出Fe-N-C复合催化剂。经扫描电镜观察，带有折褶的碳微纳米片相互交迭，形成银耳状的三维自支撑结构。氮气吸脱附测试表明此结构富含微孔和介孔，比表面积可达290 m²/g。通过X射线衍射（XRD）确证石墨化C和多晶Fe₃C作为催化剂主相存在，X射线光电子能谱（XPS）进一步揭示N原子主要以石墨N和吡啶N形式掺杂到C骨架中。电化学测试表明银耳状Fe-N-C复合催化剂在碱性条件下催化氧还原反应为四电子过程，其催化活性可媲美商业Pt/C催化剂。经过2000次氧还原测试后，催化极限电流衰减小于5%，并且半波电势仅负移5 mV（商业Pt/C催化剂负移35 mV），表现出优异的氧还原催化稳定性。

关键词:

English

Preparation and Properties of Tremella-like Fe-N-C Composite Catalyst for Oxygen Reduction Reaction

1.
Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;2 College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China
Received Date: 04 May 2017
Revised Date: 23 June 2017
Fund Project:
This work was supported by the National Natural Science Foundation of China (No. 21071153), the Hunan Provincial Science and Technology Plan of China (Nos. 2016TP1007, 2014FJ2007), and the Open-End Fund for the Valuable and Precision Instruments of Central South University (No. CSUZC201726).

Abstract: The Fe-N-C composite catalyst was prepared by the thermal decomposition of the chelate precursors based on Fe(Ⅲ) central ions and o-phenylenediamine ligands. It was observed from the scanning electron microscopy that the crumpled carbon micro-and nano-sheets were intertwined to form a free-standing tremella-like 3D structure. The N₂ adsorption/desorption experiments revealed that the composite contained ample micro-and meso-pores and had a specific surface area of 290 m²/g. Graphitic C and multi-crystal Fe₃C as main components were confirmed by the X-ray diffraction, and N-doping in the general form of graphite N and pyridine N was also verified by X-ray photoelectron spectroscopy. The electrochemical measurement showed that the tremella-like Fe-N-C composite catalyzed oxygen reduction through a four-electron path in an alkaline solution, and its activity was comparable to the commercial Pt/C catalyst. After 2000 cycles, the limited current density of the Fe-N-C catalytic electrode only decreased less than 5%, and the half-wave potential shift negatively 5 mV, which suggested that the Fe-N-C composite catalyst had better catalytic stability than the commercially used Pt/C catalyst.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究

English

Preparation and Properties of Tremella-like Fe-N-C Composite Catalyst for Oxygen Reduction Reaction

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

银耳状Fe-N-C复合催化剂的制备及催化氧还原性能研究

English

Preparation and Properties of Tremella-like Fe-N-C Composite Catalyst for Oxygen Reduction Reaction

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs