NiSe@NiOx core-shell nanowires as a non-precious electrocatalyst for upgrading 5-hydroxymethylfurfural into 2,5-furandicarboxylic acid

By Lifang Gao, Zhenbang Liu, Jinling Ma, Lijie Zhong, Zhongqian Song, Jianan Xu, Shiyu Gan, Dongxue Han, L. Niu. 2020

151 citations recorded by the source corpus.

Abstract A key challenge for the conversion of 5-hydroxymethylfurfural (HMF) into value-added 2,5-furandicarboxylic acid (FDCA) is improving the sluggish kinetics of selective oxidation alcohol groups. Electrocatalysis has been proved to be a green and efficient strategy for heterogeneous synthetic chemistry. Herein, we report an electrocatalyst of NiSe@NiOx core-shell nanowires for efficiently upgrading HMF into FDCA. The NiSe@NiOx features conductive NiSe nanowires as a core and active NiOx as a shell, showing a smaller Tafel slope of 23 mV dec−1 accompanying with a near-quantitative yield of FDCA and 99% Faradaic efficiency (FE). X-ray photoelectron spectroscopy unveils the high valence of Ni species in the NiOx shell may be the active sites. Further integrated electrolyzer can produce FDCA and hydrogen simultaneously, showing a 100% FE even after six successive cycles, disclosing robust stability. All these results demonstrate NiSe@NiOx core-shell nanowires as a promising robust non-precious electrocatalyst for highly efficient biomass transformation.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/6381368b166b3ac83d202d4836305e9f6b8bef12