一步法制备还原态氧化石墨烯载铂纳米粒子及其对甲醇氧化的电催化性能

引用本文: 高海丽, 李小龙, 贺威, 国瑞婷, 柴博. 一步法制备还原态氧化石墨烯载铂纳米粒子及其对甲醇氧化的电催化性能[J]. 物理化学学报, 2015, 31(11): 2117-2123. doi: 10.3866/PKU.WHXB201509181 shu

Citation: GAO Hai-Li, LI Xiao-Long, HE Wei, GUO Rui-Ting, CHAI Bo. One-Step Synthesis of Reduced Graphene Oxide Supported Pt Nanoparticles and Its Electrocatalytic Activity for Methanol Oxidation[J]. Acta Physico-Chimica Sinica, 2015, 31(11): 2117-2123. doi: 10.3866/PKU.WHXB201509181 shu

一步法制备还原态氧化石墨烯载铂纳米粒子及其对甲醇氧化的电催化性能

高海丽 ^{1,2,
,} ,
李小龙 ^1, ,
贺威 ^1, ,
国瑞婷 ^1, ,
柴博 ^1,

1.
1 郑州轻工业学院材料与化学工程学院, 郑州 450001;
2.
2 郑州轻工业学院, 河南省表界面科学重点实验室, 郑州 450001

通讯作者: 高海丽

基金项目:
国家自然科学基金(U1404201) (U1404201)

全国大学生创新创业训练计划(201310462099) (201310462099)

郑州轻工业学院青年骨干教师培养计划(2013XGGJS007) (2013XGGJS007)

河南省教育厅重点项目(13A530362) (13A530362)

郑州轻工业学院博士基金(2011BSJJ020)资助项目 (2011BSJJ020)

摘要: 以天然石墨为原料, 采用改进的Hummers法制备氧化石墨. 然后采用简单的一步化学还原法在乙二醇(EG)中同时还原氧化石墨烯(GO)和H₂PtCl₆制备高分散的铂/还原态氧化石墨烯(Pt/RGO)催化剂. 采用傅里叶变换红外(FTIR)光谱、X射线衍射(XRD)和透射电子显微镜(TEM)对催化剂的微结构、组成和形貌进行表征.结果表明, GO已被还原成RGO, Pt纳米粒子均匀分散在RGO表面, 粒径约为2.3 nm. 采用循环伏安法和计时电流法评价催化剂对甲醇氧化的电催化性能, 测试结果表明, Pt/RGO催化剂对甲醇氧化的电催化活性和稳定性与Pt/C和Pt/CNT相比有了很大提高. 另外其对甲醇电催化氧化的循环伏安图中正扫峰电流密度(I_f)和反扫峰电流密度(I_b)的比值高达1.3, 分别是Pt/C和Pt/CNT催化剂的2.2和1.9倍, 表明Pt/RGO催化剂具有高的抗甲醇氧化中间体CO_ad的中毒能力.

关键词:

English

One-Step Synthesis of Reduced Graphene Oxide Supported Pt Nanoparticles and Its Electrocatalytic Activity for Methanol Oxidation

1.
1 Department of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450001, P. R. China;
2.
2 Henan Provincial Key Laboratory of Surface Interface Science, Zhengzhou University of Light Industry, Zhengzhou 450001, P. R. China

Corresponding author: 高海丽

Received Date: 08 May 2015
Fund Project:
国家自然科学基金(U1404201)

全国大学生创新创业训练计划(201310462099)

郑州轻工业学院青年骨干教师培养计划(2013XGGJS007)

河南省教育厅重点项目(13A530362)

郑州轻工业学院博士基金(2011BSJJ020)资助项目

Abstract: In this study, graphite oxide was prepared from natural graphite powder using a modified Hummers method. Well-dispersed Pt nanoparticles were synthesized on reduced graphene oxide (RGO) via a simple one-step chemical reduction method in ethylene glycol (EG) by simultaneous reduction of graphene oxide (GO) and chloroplatinic acid. The microstructure, composition, and morphology of the synthesized materials were characterized with Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and transmission electron microscopy (TEM). It is shown that the GO was reduced to RGO, and the Pt nanoparticles with an average particle size of 2.3 nm were well dispersed on the surface of RGO. The catalytic performance of the catalysts for methanol oxidation was investigated by cyclic voltammetry and amperometric method, which indicated that Pt/RGO catalyst had higher electrocatalytic activity and stability for the oxidation of methanol than the Pt/C and Pt/CNT catalysts. The I_f/I_b of Pt/RGO reached 1.3, which was 2.2 and 1.9 times as high as those of Pt/C and Pt/CNT catalysts, respectively, revealing that Pt/RGO had high poisoning tolerance to the CO_ad intermediate species produced in the methanol oxidation reaction.

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

一步法制备还原态氧化石墨烯载铂纳米粒子及其对甲醇氧化的电催化性能

通讯作者: 高海丽

English

One-Step Synthesis of Reduced Graphene Oxide Supported Pt Nanoparticles and Its Electrocatalytic Activity for Methanol Oxidation

Corresponding author: 高海丽

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

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CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

一步法制备还原态氧化石墨烯载铂纳米粒子及其对甲醇氧化的电催化性能

通讯作者: 高海丽

English

One-Step Synthesis of Reduced Graphene Oxide Supported Pt Nanoparticles and Its Electrocatalytic Activity for Methanol Oxidation

Corresponding author: 高海丽

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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