Hydroxyl reduced silver nanoparticles on ultrathin boron imidazolate framework nanosheets for electrocatalytic CO reduction
Sustainable Energy and Fuels, ISSN: 2398-4902, Vol: 7, Issue: 17, Page: 4120-4126
2023
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Chinese Academy of Sciences Reports Findings in Nanoparticles (Hydroxyl Reduced Silver Nanoparticles On Ultrathin Boron Imidazolate Framework Nanosheets for Electrocatalytic Co2 Reduction)
2023 AUG 22 (NewsRx) -- By a News Reporter-Staff News Editor at Nanotech Daily -- A new study on Nanotechnology - Nanoparticles is now available.
Article Description
Electrocatalytic carbon dioxide reduction reaction (CORR) is a promising strategy to mitigate the greenhouse gas effect. The implementation of such a technique highly depends on efficient electrocatalysts. Here, we report a composite catalyst of Ag@BIF-73NSs, prepared by loading Ag nanoparticles on boron imidazolate framework (BIF) nanosheets (BIF-73NSs) through the hydroxyl functional group of the organic ligand in BIF-73NSs, as an electrocatalyst for electroreduction of CO to CO. In the obtained Ag@BIF-73NSs catalysts, ultrasmall Ag nanoparticles (∼2 nm) were evenly dispersed on the ultrathin 2D BIF-73 nanosheets with a thickness of ∼2 nm. Electrocatalytic results clearly demonstrated that Ag@BIF-73NSs exhibits much higher performance for electrocatalytic reduction of CO to CO with a FE close to 90%, which is comparable to those of pure Ag, but comparatively at much lower Ag loading (Ag, 3.39 wt%). Moreover, the mass current density of Ag@BIF-73NSs (1816.67 A cm g Ag, ICP-AES 3.39 wt% Ag) is 1101-fold higher than that of Ag@graphene (1.65 A cm g Ag, ICP-AES 57.13 wt% Ag) sheet composites. These results indicate that Ag@BIF-73NSs achieves highly selective CO generation with low metal Ag loading in electrochemical CORR catalysis by evenly loading Ag nanoparticles on ultrathin boron imidazolate framework nanosheets through coordination effects.
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Royal Society of Chemistry (RSC)
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