Pd/PANI纳米纤维的液相合成及其对乙醇的电化学行为

doi:10.11901/1005.3093.2018.398

材料研究学报

2019, Vol. 33

Issue (2): 81-86 DOI: 10.11901/1005.3093.2018.398

本期目录 | 过刊浏览

Pd/PANI纳米纤维的液相合成及其对乙醇的电化学行为

谭德新¹,胡伟²,陈素娴¹,简杰婷¹,周丽珊¹,王艳丽¹(

)

1. 岭南师范学院化学化工学院湛江 524048
2. 安徽理工大学材料科学与工程学院淮南 232001

Liquid-Phase Synthesis and Electrocatalytic Oxidation of Ethanol of Palladium/Polyaniline-nanofibers

Dexin TAN¹,Wei HU²,Suxian CHEN¹,Jieting JIAN¹,Lishan ZHOU¹,Yanli WANG¹(

)

1. School of Chemistry and Chemical Engineering, Lingnan Normal University, Zhanjiang 524048, China
2. School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China

引用本文:

谭德新,胡伟,陈素娴,简杰婷,周丽珊,王艳丽. Pd/PANI纳米纤维的液相合成及其对乙醇的电化学行为[J]. 材料研究学报, 2019, 33(2): 81-86.
Dexin TAN, Wei HU, Suxian CHEN, Jieting JIAN, Lishan ZHOU, Yanli WANG. Liquid-Phase Synthesis and Electrocatalytic Oxidation of Ethanol of Palladium/Polyaniline-nanofibers[J]. Chinese Journal of Materials Research, 2019, 33(2): 81-86.

全文: PDF(5337 KB) HTML

摘要:

以苯胺为单体、PdCl₂为金属前驱体、过硫酸铵为氧化剂，在避光条件下液相化学氧化合成Pd/PANI纳米纤维，用XRD、FESEM、TEM、SAED、HRTEM、FT-IR和UV-vis等手段对其表征，研究了 Pd/PANI纳米纤维修饰玻碳电极对乙醇的电化学行为。结果表明，Pd/PANI纳米纤维的平均直径为20 nm，长度为500 nm；平均直径为6 nm的纳米Pd颗粒单分散分布在PANI纤维中；Pd/PANI纳米纤维修饰电极的ECSA值为54.76 m²/g_Pd，是商用Pd/C催化剂(6.08 m²/g_Pd)的9倍，其j_f/j_b值为1.192。

关键词 ：复合材料, Pd/PANI纳米纤维, 液相合成, 电催化氧化, 乙醇

Abstract：

Nanofibers of palladium(Pd)/polyaniline(PANI) were synthesized via liquid phase chemical oxidation in dark conditions with aniline as monomer, palladium chloride (PdCl₂) as palladium precursor and ammonium persulfate as oxidant. The synthesized nanofibers were characterized by XRD, FESEM, TEM, SAED, HRTEM, FT-IR spectroscopy and UV-visible spectroscopy. Electrochemical performance of ethanol oxidation was also investigated on a glassy carbon electrode modified with Pd/PANI nanofibers. The results show that the length of Pd/PANI nanofibers can reach up to 500 nm with average diameters of 20 nm. Pd nanoparticles with the average diameter of 6 nm can uniformly distribute over the PANI fibers. The electrochemical active surface area (ECSA) of the Pd/PANI/GCE (54.76 m²/g_Pd) is nine times higher than that of commercial Pd/C catalyst (6.08 m²/g_Pd). The value of j_f/j_b of Pd/PANI/GCE is 1.192.

Key words： composite palladium (Pd)/polyaniline(PANI) nanofibers liquid-phase synthesis elec-trocatalytic oxidation ethanol

收稿日期: 2016-06-21

ZTFLH:

TB33

基金资助:国家自然科学基金(51303005);广东省科技发展专项资金(2017A030307028);扬帆计划引进紧缺拔尖人才项目(0003017011);岭南师范学院校级科研项目(ZL1822);岭南师范学院校级科研项目(ZL1604)

作者简介: 谭德新，男，1977年生，副教授

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https://www.cjmr.org/CN/10.11901/1005.3093.2018.398 或 https://www.cjmr.org/CN/Y2019/V33/I2/81

图1 Pd/PANI纳米纤维的XRD图谱

图2 Pd/PANI纳米纤维的FESEM、TEM、SAED和HRTEM照片

图3 PANI和Pd/PANI纳米纤维的红外光谱图

图4 PANI和Pd/PANI纳米纤维的紫外光谱

图5 Pd/PANI/GCE在1 mol/L KOH溶液中的循环伏安曲线

图6 Pd/PANI/GCE在1 mol/L KOH+1 mol/L乙醇溶液中的循环伏安曲线

图7 Pd/PANI/GCE的计时电流曲线

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