PtNiSnO<sub>2</sub>/C的制备、表征及其电催化氧化乙醇活性

引用本文: 黄明辉, 金碧瑶, 赵莲花, 孙世刚. PtNiSnO₂/C的制备、表征及其电催化氧化乙醇活性[J]. 物理化学学报, 2017, 33(3): 563-572. doi: 10.3866/PKU.WHXB201612072 shu

Citation: HUANG Ming-Hui, JIN Bi-Yao, ZHAO Lian-Hua, SUN Shi-Gang. Preparation and Characterization of Pt-Ni-SnO₂/C for Ethanol Oxidation Reaction[J]. Acta Physico-Chimica Sinica, 2017, 33(3): 563-572. doi: 10.3866/PKU.WHXB201612072 shu

PtNiSnO₂/C的制备、表征及其电催化氧化乙醇活性

1.
延边大学理学院化学系, 吉林延吉 133002;
2.
厦门大学固体表面物理化学国家重点实验室, 福建厦门 361005
基金项目:
吉林省科技发展计划项目（20120741）和厦门大学固体表面物理化学国家重点实验室开放课题（201407）资助

摘要: 采用改进的Bönnemann法成功制备了Pt/C、Pt-Ni_1/3/C、Pt-SnO₂/C、Pt-Ni_x-SnO₂/C（x=1/4，1/3，2/3，1）阳极电催化剂。利用X射线衍射（XRD）、高分辨透射电子显微镜（HR-TEM）以及X射线光电子能谱（XPS）对催化剂晶型结构、表面形貌和表面电子结构进行了表征。运用线性扫描伏安（LSV）和电流密度-时间（j-t）曲线进行电化学测试，研究了乙醇电催化氧化（EOR）活性。并用原位红外光谱（in situ FT-IR）研究了EOR过程中产物的分布。结果表明，Pt-Ni_1/3-SnO₂/C是由Pt-Ni合金和SnO₂两相组成。XPS结果表明，在Pt-SnO₂中添加微量的Ni，Pt表面电子结构发生了改变。电化学结果表明，三元催化剂的EOR活性均优于二元和纯Pt，其中Pt-Ni_1/3-SnO₂/C的EOR活性最佳。Ni和SnO₂的加入并没有显著提高乙醇C-C键的断裂能力，但是二者的协同作用在低电位（0.1 V）下加强了乙醛的进一步氧化，生成了乙酸。

关键词:

铂
/ 镍
/ 二氧化锡
/ 乙醇电氧化

English

Preparation and Characterization of Pt-Ni-SnO₂/C for Ethanol Oxidation Reaction

1.
Department of Chemistry, College of Science, Yanbian University, Yanji 133002, Jilin Province, P. R. China;
2.
State Key Laboratory of Physical Chemistry of Solid Surfaces of Xiamen University, Xiamen 361005, Fujian Province, P. R. China
Received Date: 12 October 2016
Revised Date: 07 December 2016
Fund Project:
The project was supported by the Jilin Provincial Science and Technology Project of China (20120741) and Opening Foundation of State Key Laboratory of Physical Chemistry of Solid Surface of Xiamen University,China (201407)

Abstract: A series of Pt/C, Pt-Ni_1/3/C, Pt-SnO₂/C and Pt-Ni_x-SnO₂/C (x=1/4, 1/3, 2/3, 1) anode electro-catalysts have been synthesized by an improved Bönnemann method. The crystal structure, surface morphology and surface electronic structure were characterizated by X-ray diffraction (XRD), high resolution transmission electron microscope (HR-TEM) and X-ray photoelectron spectroscopy (XPS). The electro-catalytic activities were characterizated by linear sweep voltammetry (LSV) and amperometric current density-time (j-t) curve techniques for ethanol oxidation reaction (EOR). In situ spectroelectrochemical studies have been used to identity adsorbed reaction intermediates and products (in situ Fourier transform infrared spectroscopy, FT-IR). XRD and HR-TEM analysis revealed two phases in the ternary Pt-Ni-SnO₂/C catalyst:Pt-Ni alloys and SnO₂. XPS results show that the electronic structure of the Pt in Pt-Ni_1/3-SnO₂/C might be changed due to the addition of Ni. The activity of Pt-Ni-SnO₂/C for EOR was found to be higher than that of Pt/C, Pt-Ni/C and Pt-SnO₂/C catalysts. The incorporation of Ni and SnO₂ did not significantly improve C-C bond breaking for complete oxidation of ethanol, but the synergy under the low potential (0.1 V) to strengthen the further oxidation of acetaldehyde, generate the acetic acid.

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

PtNiSnO₂/C的制备、表征及其电催化氧化乙醇活性

English

Preparation and Characterization of Pt-Ni-SnO₂/C for Ethanol Oxidation Reaction

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中国化学会秘书处

PtNiSnO2/C的制备、表征及其电催化氧化乙醇活性

English

Preparation and Characterization of Pt-Ni-SnO2/C for Ethanol Oxidation 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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