氮掺杂还原氧化石墨烯负载铂催化剂的制备及甲醇电氧化性能
采用高温热解聚苯胺修饰的氧化石墨烯(PANI-GO),得到了氮掺杂的还原氧化石墨烯碳材料(N-RGO),以其负载Pt制备了Pt/N-RGO纳米结构电催化剂。采用透射电镜(TEM)、X射线光电子能谱(XPS)、X射线衍射(XRD)谱及拉曼光谱等技术对N-RGO和Pt/N-RGO的形貌及结构进行了表征,用循环伏安、计时电流等电化学技术研究了Pt/N-RGO电极催化剂对CO溶出反应和甲醇电氧化反应的催化性能。结果表明:高温热解PANI-GO可同时实现GO的还原及其氮掺杂的过程,氮掺杂引起还原氧化石墨烯碳材料表面缺陷结构和导电性的增加;与相应的未掺杂氮样品Pt/RGO相比较, Pt/N-RGO样品上P...
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Published in | 物理化学学报 Vol. 30; no. 7; pp. 1267 - 1273 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
新疆大学应用化学研究所,先进功能材料自治区级重点实验室,乌鲁木齐830046
2014
新疆大学化学化工学院,乌鲁木齐,830046%新疆大学化学化工学院,乌鲁木齐830046 |
Subjects | |
Online Access | Get full text |
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Summary: | 采用高温热解聚苯胺修饰的氧化石墨烯(PANI-GO),得到了氮掺杂的还原氧化石墨烯碳材料(N-RGO),以其负载Pt制备了Pt/N-RGO纳米结构电催化剂。采用透射电镜(TEM)、X射线光电子能谱(XPS)、X射线衍射(XRD)谱及拉曼光谱等技术对N-RGO和Pt/N-RGO的形貌及结构进行了表征,用循环伏安、计时电流等电化学技术研究了Pt/N-RGO电极催化剂对CO溶出反应和甲醇电氧化反应的催化性能。结果表明:高温热解PANI-GO可同时实现GO的还原及其氮掺杂的过程,氮掺杂引起还原氧化石墨烯碳材料表面缺陷结构和导电性的增加;与相应的未掺杂氮样品Pt/RGO相比较, Pt/N-RGO样品上Pt颗粒的分散更均匀,显示出更强的抗CO毒化能力和更高的甲醇电氧化催化活性及稳定性。 |
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Bibliography: | 11-1892/06 Polyaniline; Reduced graphene oxide; Nitrogen-doped; Platinum electrocatalyst;Methanol oxidation WANG Li, MA Jun-Hong (1.College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, P. R. China; 2.Key Laboratory of Advanced Functional Materials, Autonomous Region, Institute of Applied Chemistry, Xinjiang University, Urumqi 830046, P. R. China) Nitrogen-doped reduced graphene oxide materials (N-RGO) derived from pyrolysis of graphene oxide (GO)/polyaniline composites were used as a support for the immobilization of Pt nanoparticles. The morphologies and structures of N-RGO and Pt/N-RGO were comprehensively characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Raman spectroscopy. The electrocatalytic activities of the as-prepared catalysts for CO stripping and methanol oxidation were investigated by cyclic voltammetry and chronoamperometry. The results showed that GO was reduced to multilayer graphene by therma |
ISSN: | 1000-6818 |
DOI: | 10.3866/PKU.WHXB201405052 |