Eggshell-membrane-templated synthesis of C, S Doped Mesoporous NiO for methanol oxidation in alkaline solution

Autor: Zhenzhen Yu, Jing Li, Yingying Gu, Yarui An, Yifen Hu, Siqin Wu, Chuan Zhang, Pengyu Gao, Zhen Xu
Rok vydání: 2020
Předmět:
Zdroj: Journal of Applied Electrochemistry. 50:821-834
ISSN: 1572-8838
0021-891X
DOI: 10.1007/s10800-020-01438-9
Popis: An interwoven hollow fiber structured mesoporous NiO catalyst doped with C, S was fabricated by the vacuum impregnation and thermal decomposition methods using eggshell membrane as template. The structure of the catalyst was characterized by X-ray diffraction, thermo-gravimetric analysis, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and specific surface area test. Under a high vacuum condition, the synthesized NiO material has a better interwoven fiber and mesoporous structure, which effectively increases the specific surface area of the material. C and S were doped into NiO via eggshell membrane pyrolysis, which then formed C–OH and SO42− species on the surface of the material. The electrocatalytic performance of the catalyst for the oxidation of methanol in alkaline solution was studied by cyclic voltammetry and chronoamperometry. The C, S doped mesoporous NiO material exhibits much higher catalytic efficiency and anti-poisoning ability than that of NiO nanoparticles due to the synergistic catalysis of NiO and doping C–OH and SO42− species.
Databáze: OpenAIRE
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