A MOF-74(Ni) derived partially oxidized Ni@C catalyst for SO 2 electro-oxidation integrated with solar driven hydrogen evolution

The SO 2 electro-oxidation reaction (SO 2 OR) is a feasible tactic to alleviate SO 2 pollution and an alternative to the oxygen evolution reaction (OER) in the electro-production of H 2 . However, efficient SO 2 OR catalysts are still limited to Pt and Au. Here, we report an efficient partially oxid...

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Bibliographic Details
Published in:Sustainable energy & fuels 2021-07, Vol.5 (14), p.3588-3592
Main Authors: Guo, Jin-Han, Wei, Xuming, Sun, Wei-Yin
Format: Article
Language:English
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Summary:The SO 2 electro-oxidation reaction (SO 2 OR) is a feasible tactic to alleviate SO 2 pollution and an alternative to the oxygen evolution reaction (OER) in the electro-production of H 2 . However, efficient SO 2 OR catalysts are still limited to Pt and Au. Here, we report an efficient partially oxidized Ni@C (po-Ni@C) SO 2 OR catalyst, which exhibits better performance than the 20% Pt/C catalyst. Also, utilizing the po-Ni@C catalyst mediated SO 2 OR to replace the Ti/IrO 2 –Ta 2 O 5 catalyzed OER can vastly alleviate the electro-consumption in the hydrogen electro-production. Furthermore, a solar to hydrogen electrolyzer was established and delivered ∼25 mA current powered by a 1 V commercial silicon solar cell. This work may provide a new strategy for the design of SO 2 OR catalysts and establish waste SO 2 treatment and H 2 electro-production systems.
ISSN:2398-4902
2398-4902
DOI:10.1039/D1SE00645B