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Green preparation of self-supporting platinum nanoflower catalyst and its electrocatalytic oxidation performance of methanol

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Carbon Resources Conversion 2023年第3期6卷 167-172页

作者： Zhen Lu Hongjie Kang Ji Li Jianpeng Shang Kun Yang Rui Liu Zuopeng Li Feng Feng Yong Guo Haidong Zhao School of Chemistry and Chemical Engineering Shanxi Datong UniversityDatong 037009China Datong Qinxiong Yunding Hydrogen Energy Technology Co. Ltd.Datong 037005China

The three-dimensional(3D)self-supporting Pt nanoflower catalyst was prepared by using Pt organic compounds as precursors in a low-temperature molten salt *** obtained Pt nanoflower nanoparticle can reach 400-500 nm with a face-centered cubic structure,which has the structural characteristics of a loose framework and more exposed active *** surfactant-free Pt nanoflower was directly used as methanol electrooxidation reaction(MOR)electrocatalysts without any pretreatment and activated carbon *** results of electrochemical catalytic oxidation of methanol showed that the Pt nanoflower catalyst exhibit more enhanced electrocatalytic oxidation performance toward methanol compared with the commercial platinum black *** green and effective method can be developed and expected to enable mass production of fuel cell catalysts.

关键词： Fuel cell Self-supporting Pt nanoflower methanol electrooxidation reaction

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Promoting effects of Fe_2O_3 to Pt electrocatalysts toward methanol oxidation reaction in alkaline electrolyte

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Chinese Journal of Catalysis 2017年第3期38卷 554-563页

作者：宋桂花杨海芳孙雅飞王静怡曲卫东张强马令娟冯媛媛曲阜师范大学化学与化工学院山东省生命有机分析重点实验室山东曲阜273165

Fe_2O_3 nanorods and hexagonal nanoplates were synthesized and used as the promoters for Pt electrocatalysts toward the methanol oxidation reaction（MOR） in an alkaline *** catalysts were characterized by scanning electron microscopy,transmission electron microscopy,X-ray diffraction,X-ray photoelectron spectroscopy,cyclic voltammetry and *** results show that the presence of Fe_2O_3 in the electrocatalysts can promote the kinetic processes of MOR on Pt,and this promoting effect is related to the morphology of the Fe_2O_3 *** catalyst with Fe_2O_3 nanorods as the promoter（Pt-Fe_2O_3/C-R） exhibits much higher catalytic activity and stability than that with Fe_2O_3 nanoplates as the promoter（Pt-Fe_2O_3/C-P）.The mass activity and specific activity of Pt in a Pt-Fe_2O_3/C-R catalyst are 5.32 A/mgpt and 162.7 A/m^2_（Pt）,respectively,which are approximately 1.67 and 2.04 times those of the Pt-Fe_2O_3/C-P catalyst,and 4.19 and 6.16 times those of a commercial PtRu/C catalyst,*** effects between Fe_2O_3 and Pt and the high content of Pt oxides in the catalysts are responsible for the *** findings contribute not only to our understanding of the MOR mechanism but also to the development of advanced electrocatalysts with high catalytic properties for direct methanol fuel cells.

关键词： Platinum Ferric oxide Promoting effect methanol electrooxidation reaction Alkaline electrolyte

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