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Nickel-Doped Copper Oxide Nanorods for Efficient Biomass Electro-Oxidation
Xinru Yu1, Yue Zhao1, Kaiyue Yan1
1College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266590, China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|September 12, 2025
Summary
Nickel-doped copper oxide (Ni-CuOx) enhances biomass electro-oxidation. This catalyst significantly boosts the conversion of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA), offering a promising route for sustainable chemical production.
Area of Science:
- Materials Science
- Electrochemistry
- Catalysis
Background:
- Copper-based catalysts are promising for biomass electro-oxidation.
- Improving the intrinsic activity of these catalysts remains a challenge.
Purpose of the Study:
- To synthesize and evaluate a nickel-doped copper oxide (Ni-CuOx) catalyst.
- To enhance the electro-oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA).
Main Methods:
- Synthesis of Ni-CuOx catalyst.
- Electrochemical testing for HMF electro-oxidation.
- Physical characterization and electrochemical analysis.
Main Results:
- Ni-CuOx achieved a current density of 199.7 mA cm-2 at 1.4 V, 2.8 times higher than pure CuOx.
- High FDCA yield (90.1%) and Faradaic efficiency (98.5%) were obtained.
- Ni doping optimized electronic structure and HMF adsorption.
Conclusions:
- Ni doping significantly enhances the electrocatalytic activity of copper oxide catalysts.
- This study provides insights for designing advanced copper-based catalysts for biomass electro-oxidation.
- Ni-CuOx shows great potential for sustainable production of FDCA.
