Pt修饰的Pd/石墨烯纳米复合材料的制备及对乙二醇氧化反应的电催化活性

doi:10.16085/j.issn.1000-6613.2015.04.020

化工进展 ›› 2015, Vol. 34 ›› Issue (04): 1019-1022,1073.DOI: 10.16085/j.issn.1000-6613.2015.04.020

Pt修饰的Pd/石墨烯纳米复合材料的制备及对乙二醇氧化反应的电催化活性

马翔宇, 金长春, 董如林

常州大学石油化工学院, 江苏常州 213164

收稿日期:2014-09-18 修回日期:2014-11-04 出版日期:2015-04-05 发布日期:2015-04-05
通讯作者: 金长春,博士,副教授,从事复合纳米材料和电化学催化的研究.E-mail cjin@cczu.edu.cn.
作者简介:马翔宇(1990—),男,硕士研究生.

Preparation and enhanced electrocatalytic activity of Pt-modified Pd/graphene nanocomposites for ethylene glycol oxidation

MA Xiangyu, JIN Changchun, DONG Rulin

School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China

Received:2014-09-18 Revised:2014-11-04 Online:2015-04-05 Published:2015-04-05

摘要/Abstract

摘要： 以氧化石墨(GO)和Pd(NO₃)₂为原料,通过化学还原法制备Pd纳米粒子-石墨烯(Pd/G)纳米复合材料,然后以H₂PtCl₆作为Pt前体,在Pd纳米粒子的表面恒电位沉积Pt,制备不同Pt负载量的Pd/G(Pt-Pd/G)电极.利用场发射扫描电镜(FE-SEM)、透射电镜(TEM)和X射线能谱仪(EDX)对材料的微观结构进行了表征和分析.结果显示石墨烯上的金属粒子分散均匀,平均粒径约7.2nm.电化学测试结果显示Pt-Pd/G电极对乙二醇电化学氧化反应具有良好的催化性能.当纳米粒子的Pt:Pd原子百分比为1:42时,其反应峰电流密度分别为Pd/G和Pt/G电极的3.0倍和2.7倍.少量的Pt沉淀可显著改进Pd/G电极的催化活性.本研究采用的修饰方法简单,修饰效果明显,可应用于其他金属纳米复合材料的异金属修饰.

关键词: 催化剂载体, 表面修饰, 纳米材料, 电化学, 催化

Abstract: Pd nanoparticles/graphene (Pd/G) composites were fabricated via the chemical reduction method using graphite oxide and palladium nitrate,and then deposition of Pt on Pd/G was performed potentiostatically using chloroplatinic acid as precursor of platinum. Pt-modified Pd/G (Pt-Pd/G) electrodes with different platinum loadings were prepared. The microstructure of the Pt-Pd/G electrode was characterized by FE-SEM,EDX and TEM,and the results showed that metal nanoparticles with a mean diameter of 7.2 nm were evenly distributed on the surface of graphene. Electrochemical measurements revealed the high catalytic activity of Pt-Pd/G electrodes for ethylene glycol oxidation in alkaline solution. The peak current density on the Pt-Pd/G electrodes with a Pt:Pd atomic ratio of 1:42 was about 3.0 and 2.7 times higher than that on Pd/G and Pt/G electrodes,respectively. The catalytic activity of the Pd/G electrode was significantly improved by the deposition of a small amount of Pt. The modification method used in this study is simple but its effect is very obvious,and the approach can be used to modify other metal substrates with a second metal.

Key words: catalyst support, surface modification, nanomaterials, electrochemistry, catalysiss

中图分类号:

TQ152

马翔宇, 金长春, 董如林. Pt修饰的Pd/石墨烯纳米复合材料的制备及对乙二醇氧化反应的电催化活性[J]. 化工进展, 2015, 34(04): 1019-1022,1073.

MA Xiangyu, JIN Changchun, DONG Rulin. Preparation and enhanced electrocatalytic activity of Pt-modified Pd/graphene nanocomposites for ethylene glycol oxidation[J]. Chemical Industry and Engineering Progree, 2015, 34(04): 1019-1022,1073.

参考文献

[1] Novoselov K S,Geim A K,Morozov S V,et al. Electric field effect in atomically thin carbon films[J]. Science,2004,306(5696):666-669.
[2] 张紫萍,刘秀军,李同起,等. 掺杂型石墨烯基纳米复合材料的研究进展[J]. 化工进展,2011,30(4):788-806.
[3] Gao L N,Yue W B,Tao S S,et al. Novel strategy for preparation of graphene-Pd,Pt composite,and its enhanced electrocatalytic activity for alcohol oxidation[J]. Langmuir,2013,29(3):957-964.
[4] 孙红梅,曹林园,逯乐慧. 三维多孔石墨烯/铂钯双金属杂化体作为高性能的甲醇氧化电催化剂[J]. 化学学报,2013,71(4):579-584.

[5] 陈胜洲,王松青,林维明. 聚吡咯修饰Nafion膜直接甲醇燃料电池的性能[J]. 化工进展,2012,31(3):541-544.

[6] Matsuoka K,Inaba M,Iriyama Y,et al. Oxidation of polyhydric alcohols on a Pt electrode in alkaline solution[J]. Fuel Cells,2002,2(1):35-39.

[7] Hummers W S,Offeman R E. Preparation of graphitic oxide[J]. Journal of the American Chemical Society,1958,80(6):1339.

[8] Fasolino A,Los J H,Katsnelson M I. Intrinsic ripples in graphene[J]. Nature Materials,2007,6:858-861.

[9] Meyer J C,Geim A K,Katsnelson M I,et al. The structure of suspended graphene sheets[J]. Nature,2007,446:60-63.

[10] 温祝亮,杨苏东,宋启军,等. 石墨烯负载高活性Pd催化剂对乙醇的电催化氧化[J]. 物理化学学报,2010,26(6):1570-1574.

[11] 于美,刘鹏瑞,孙玉静,等. 石墨烯-银纳米粒子复合材料的制备及表征[J]. 无机材料学报,2012,27(1):89-94.

[12] Zhang J,Mo Y,Vukmirovic M B,et al. Platinum monolayer electrocatalysts for O₂ reduction: Pt monolayer on Pd(111) and on carbon-supported Pd nanoparticles[J]. The Journal of Physical Chemistry B,2004,108(30):10955-10964.

[13] Li H Q,Sun G Q,Li N,et al. Design and preparation of highly active Pt-Pd/C catalyst for the oxygen reduction reaction[J]. The Journal of Physical Chemistry C,2007,111(15):5605-5617.

[14] Wang H,Xu C W,Cheng F L,et al. Pd/Pt core-shell nanowire arrays as highly effective electrocatalysts for methanol electrooxidation in direct methanol fuel cells[J]. Electrochemistry Communications,2008,10(10):1575-1578.

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Pt修饰的Pd/石墨烯纳米复合材料的制备及对乙二醇氧化反应的电催化活性

Preparation and enhanced electrocatalytic activity of Pt-modified Pd/graphene nanocomposites for ethylene glycol oxidation

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