Preparation and characterization of glassy carbon electrode modified by composite palladium-nickel film used in electrochemical reductive dechlorination

SUN Zhirong; LI Baohua; HU Xiang; SHI Min; GE Hui; PENG Yongzhen

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Preparation and characterization of glassy carbon electrode modified by composite palladium-nickel film used in electrochemical reductive dechlorination

更新时间：2025-12-10

- Preparation and characterization of glassy carbon electrode modified by composite palladium-nickel film used in electrochemical reductive dechlorination
- CIESC Journal Issue 5, Pages: 1271-1277(2008)
- 作者机构：
  
  1. 北京工业大学北京市水质科学与水环境恢复工程重点实验室
  2. 北京化工大学化学工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 May 2008，
  
  Published：05 May 2008
- 稿件说明：
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SUN Zhirong, LI Baohua, HU Xiang, et al. Preparation and characterization of glassy carbon electrode modified by composite palladium-nickel film used in electrochemical reductive dechlorination[J]. CIESC Journal, 2008, (5): 1271-1277.
DOI：

SUN Zhirong, LI Baohua, HU Xiang, et al. Preparation and characterization of glassy carbon electrode modified by composite palladium-nickel film used in electrochemical reductive dechlorination[J]. CIESC Journal, 2008, (5): 1271-1277. DOI：

摘要

通过电沉积法在玻碳板（GC）电极上负载钯镍双金属颗粒，并利用正交实验对其进行循环伏安（CV）研究，得到Pd-Ni/GC电极的最佳制备条件为：Ni2+=8.5 mmol·L-1，Pd2+=3 mmol·L-1，pH=7.0，Jk=15 mA·cm-2，T=30 min。可以在-500 mV（以Hg/Hg2SO4为参比电极）左右获得-24.83 mA的氢吸附峰。用聚吡咯(PPy)修饰GC制备Pd-Ni/PPy/GC电极，CV结果表明，Pd-Ni/PPy/GC电极具有比Pd-Ni/GC电极更大的氢吸附峰值，可以在-500 mV（以Hg/Hg2SO4为参比电极）左右获得-32.33 mA的氢吸附峰。扫描电镜（SEM）分析表明，聚吡咯的修饰明显改变了Pd-Ni颗粒的沉积形态，使其沉积粒径更小，分散度更高。

Abstract

The electrochemical deposition behavior of Pd-Ni bimetal on glassy carbon (GC) electrode was studied by means of cyclic voltammetry (CV) based on orthogonal experiments.The optimum preparation conditions of Pd-Ni/GC electrode were Ni2+=8.5 mmol·L-1

Pd2+=3 mmol·L-1

pH=7.0

Jk=15 mA·cm-2

and T=30 min.The hydrogen adsorption peak on Pd-Ni/GC electrode of -24.83 mA was obtained at about -500 mV (vs Hg/Hg2SO4).Pd-Ni/PPy/GC electrode modified by polypyrrole film was prepared.CV results revealed that the hydrogen adsorption peak of -32.33 mA was obtained at about -500 mV (vs Hg/Hg2SO4)

which was larger than that on Pd-Ni/GC electrode.Scanning electron microscope (SEM) images revealed that PPy film changed the deposition configuration of Pd-Ni particles evidently.The diameters of Pd-Ni microparticles were smaller and the dispersion degree was higher.

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