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

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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.

关键词：

Composite films Electrochemical electrodes Carbon Reduction Dechlorination Polypyrroles Palladium Hydrogen pH Nickel Bimetals Scanning electron microscopy Cyclic voltammetry

作者机构：

[ 1 ] [Sun, Zhirong]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Li, Baohua]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Hu, Xiang]School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
[ 4 ] [Shi, Min]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Ge, Hui]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 6 ] [Peng, Yongzhen]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China

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