Pd nanoparticles supported on copper phthalocyanine functionalized carbon nanotubes for enhanced formic acid electrooxidation |
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Authors: | Jian-Qiang Zeng Sheng-Nan SunJing-Ping Zhong Xiao-Feng LiRui-Xiang Wang Li-Na WuLi Wang You-Jun Fan |
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Affiliation: | Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Education of China, College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, China |
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Abstract: | The hydrothermal synthesis of a novel Pd electrocatalyst using copper phthalocyanine-3,4′,4″,4′″-tetrasulfonic acid tetrasodium salt (TSCuPc) functionalized multi-walled carbon nanotubes (MWCNTs) composite as catalyst support for Pd nanoparticles is reported. The prepared nanocomposites were characterized by UV–vis absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, thermogravimetric analysis (TGA), X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and electrochemical tests. It is found that Pd nanoparticles are uniformly deposited on the surface of TSCuPc-MWCNTs, and their dispersion and electrochemical active surface area (ECSA) are significantly improved. Studies of cyclic voltammetry and chronoamperometry demonstrate that the Pd/TSCuPc-MWCNTs exhibits much higher electrocatalytic activity and stability than the Pd/AO-MWCNTs catalyst for formic acid oxidation. This study implies that the as-prepared Pd/TSCuPc-MWCNTs will be a promising candidate as an anode electrocatalyst in direct formic acid fuel cell (DFAFC). |
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Keywords: | Palladium Carbon nanotubes Functionalization Copper phthalocyanine Formic acid electrooxidation |
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