Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 261, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2019.118235
Keywords
Electrocatalysis; 5-hydroxymethylfurfural; NiSe@NiOx core-shell; Robust stability; 2,5-furandicarboxylic acid
Funding
- National Natural Science Foundation (NSFC), China [21622509, 21805052, 21527806, 21627809, 21727815]
- Department of Science and Techniques of Jilin Province [20180201021GX, 20170203004SF, 20170101183JC]
- Jilin Province Development and Reform Commission [2016C014, 2017C053-1]
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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.
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