铂纳米空球的制备及其对甲醇氧化的电催化性能

引用本文: 饶贵仕, 程美琴, 钟艳, 邓小聪, 易飞, 陈治仁, 钟起玲, 范凤茹, 任斌, 田中群. 铂纳米空球的制备及其对甲醇氧化的电催化性能[J]. 物理化学学报, 2011, 27(10): 2373-2378. doi: 10.3866/PKU.WHXB20111008 shu

Citation: RAO Gui-Shi, CHENG Mei-Qin, ZHONG Yan, DENG Xiao-Cong, YI Fei, CHEN Zhi-Ren, ZHONG Qi-Ling, FAN Feng-Ru, REN Bin, TIAN Zhong-Qun. Preparation of High Catalytic Platinum Hollow Nanospheres and Their Electrocatalytic Performance for Methanol Oxidation[J]. Acta Physico-Chimica Sinica, 2011, 27(10): 2373-2378. doi: 10.3866/PKU.WHXB20111008 shu

铂纳米空球的制备及其对甲醇氧化的电催化性能

饶贵仕 ^1, ,
程美琴 ^1, ,
钟艳 ^1, ,
邓小聪 ^1, ,
易飞 ^1, ,
陈治仁 ^1, ,
钟起玲 ^1, ,
范凤茹 ^2, ,
任斌 ^2, ,
田中群 ^2,

基金项目:
国家自然科学基金(20663002) (20663002)

厦门大学固体表面物理化学国家重点实验室基金(200511) (200511)

江西省自然科学基金(0620025)资助项目 (0620025)

摘要: 以粒径为100 nm的硒球作模板, 在室温下批量合成了粒径约110 nm、壳厚约5 nm的铂空球. 采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HR-TEM)、选区电子衍射(SAED)、X射线衍射(XRD)、能量色散X射线谱(EDX)等检测技术表征了其形貌与结构; 以甲醇为探针分子研究了铂纳米空球修饰玻碳电极对甲醇电氧化的催化性能. 结果表明, 由铂原子簇团构筑的多孔铂空球粒径均匀、分散性好、结构稳定、比表面积大、传质性能好, 是甲醇氧化的理想催化材料. 循环伏安(CV)结果表明: 当甲醇氧化的电流密度为0.10 mA·cm^-2, 正扫时, 铂纳米空球的氧化电位与实心铂纳米粒子及铂黑相比, 分别负移了约110 和64mV; 负扫时, 前者比后两者分别负移了约51 与13 mV. 经800 圈循环伏安扫描后, 正扫时, 甲醇在铂纳米空球上氧化峰的电流密度为实心铂纳米粒子及铂黑上的13和15倍; 负扫时, 前者为后两者的19和38倍. 表明铂纳米空球对甲醇氧化具有较好的催化活性和稳定性.

关键词:

English

Preparation of High Catalytic Platinum Hollow Nanospheres and Their Electrocatalytic Performance for Methanol Oxidation

1.
1. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China;
2. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China
Received Date: 29 March 2011
Available Online: 27 September 2011
Fund Project:
国家自然科学基金(20663002)

厦门大学固体表面物理化学国家重点实验室基金(200511)

江西省自然科学基金(0620025)资助项目

Abstract: Pt hollow nanospheres with a particle diameter of 110 nm and a shell thickness of about 5 nm were synthesized in bulk using selenium colloids with a particle diameter of 100 nm as a template. Transmission electron microscopy (TEM), high resolution transmission electron microscopy (HR-TEM), selected area electron diffraction (SAED), X-ray diffraction (XRD), energy dispersive X-ray spectrocopy (EDX), and scanning electron microscopy (SEM) were used to determine their morphologies and structures. The electrocatalytic activity of the Pt hollow nanospheres modifying glassy carbon electrode toward methanol oxidation was measured by using methanol as the probe molecule. We show that the multiporous Pt hollow nanospheres composited of atomic clusters have a uniform particle size, od dispersity, a stable structure, a big surface area and od mass transfer performance. Cyclic voltammetry (CV) showed that when the current density of methanol oxidation was 0.10 mA·cm^-2 and upon positive scanning the methanol oxidation potential of the Pt hollow nanospheres was around 110 and 64 mV negative than that of the Pt solid nanoparticles and Pt black, respectively. Upon negative scanning the former species was about 51 and 13 mV negative than that of the latter two species, respectively. After 800 segments cyclic voltammetry scanning, upon positive scanning the peak current density of methanol oxidation on the Pt hollow nanospheres was found to be 13 and 15 times as high as that of the Pt solid nanoparticles and Pt black, respectively. Upon negative scanning the former species was about 19 and 38 times as high as that of the two latter species. Our experimental results show that the Pt hollow nanospheres have od electrocatalytic activity and stability toward methanol oxidation.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

铂纳米空球的制备及其对甲醇氧化的电催化性能

English

Preparation of High Catalytic Platinum Hollow Nanospheres and Their Electrocatalytic Performance for Methanol Oxidation

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

铂纳米空球的制备及其对甲醇氧化的电催化性能

English

Preparation of High Catalytic Platinum Hollow Nanospheres and Their Electrocatalytic Performance for Methanol Oxidation

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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