Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 307, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2022.121209
Keywords
Cobalt oxide; Hydrogen evolution reaction; 2; 5-bis(hydroxymethyl)furan; 2,5-furandicarboxylic acid ; Photovoltaic electrocatalysis
Funding
- National Natural Science Foundation of China [22072170]
- Zhejiang Provincial Natural Science Foundation of China [LY19B030003, LQ19B060002]
- Key Research and Development Pro-gram of Zhejiang Province [2021C03170]
- Ningbo Science and Tech-nology Bureau [2018B10056, 2019B10096]
- Chinese Academy of Sciences [QYZDB-SSW-JSC037]
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This study proposes a dual-functional electrocatalyst for simultaneous biomass upgrading and H-2 evolution during water splitting. The electrocatalyst has a lower energy barrier and higher safety, achieving high conversion rates and efficiencies for various reactions.
Substituting overall water splitting with simultaneous biomass upgrading and H-2 evolution has drawn tremendous attention due to the lower energy barrier and higher safety. Developing a cheap, efficient, and durable electrocatalyst with dual function is crucial to this novel coupling system. Herein, we propose the in-situ electrochemical tuning nonporous CoSx to hydrangea-like Co3O4 as a highly effective versatile electrocatalyst for the first time. Due to the defective structures and abundant electroactive sites, the Co3O4 catalyst achieved a complete conversion of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) with 93.2% yield and 92.9% faradaic efficiency (FE), as well as a pure hydrogen evolution with 99.8% FE. Interestingly, it harvested a better performance with 95.8% FDCA yield for electro-oxidation of the more stable 2,5-bis(hydroxymethyl)furan (BHMF). Finally, a solar-driven integration reaction was constructed for the first time using the photovoltaic electrocatalysis (PVEC) of BHMF for the efficient and sustainable production of FDCA and H-2.
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