INORGANIC MATERIALS AND CERAMIC MATRIX COMPOSITES |
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Preparation of NiFe2O4/rGO Electrode Material and Its Electrocatalytic Performance for HMF Oxidation |
WANG Honglei1,*, NIU Caiyun2, ZHU Hongyue1, LI Xiaoming1, ZHOU Dan1, SUN Zhigang3, HU Jifan3, YANG Changping3,*
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1 School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China 2 School of Chemistry and Chemical Engineering, North University of China, Taiyuan 030051, China 3 School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China |
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Abstract The 2,5-furandicarboxylic acid (FDCA) synthesized by electro synthesis of 5-hydroxymethylfurfural (HMF) has a structure and properties similar to terephthalic acid, providing the possibility for developing biodegradable plastics and reducing white pollution. The NiFe2O4/rGO electrode material was successfully synthesized using CO2 laser, and its microstructure presents a nano particle embedded graphene oxide structure. In situ Raman spectroscopy showed that compared with the Fe5O12/rGO electrode material, the NiFe2O4/rGO surface was reconstructed into NiOOH and FeOOH species during the HMF electrocatalytic oxidation process, confirming that the addition of Ni makes the material more prone to surface reconstruction. The surface reconstructed NiFe2O4/rGO electrode material showed a decrease in overpotential to 26 mV at 100 mA· cm-2, and a decrease of approximately 182 mV compared to the oxygen production reaction (OER) overpotential. The electrode material after surface reconstruction has a larger specific surface area, which promotes the contact between reactants and electrode material. The conversion rate of reactants, selectivity of target products, and Faraday efficiency were 99.8%, 99.3%, and 87.6%, respectively. This study provides an effective approach for promoting surface reconstruction of catalytic materials through the addition of elements, thereby enhancing the electrocatalytic oxidation activity of HMF.
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Published: 25 July 2024
Online: 2024-08-12
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Fund:Funded Project of Shanxi Applied Basic Research Program (202203021222185), the Scientific Research Startup Fund of Taiyuan University of Science and Technology (20222092), the Excellent Award Fund of Taiyuan University of Science and Technology for Doctors Working in Shanxi (20232058), Taiyuan University of Science and Technology College Student Innovation and Entrepreneurship Project (XJ2023058). |
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