Journal
ACS APPLIED ENERGY MATERIALS
Volume 3, Issue 4, Pages 3946-3954Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.0c00352
Keywords
metal-organic frameworks; NH2-MIL-101(Fe); g-C3N4; heterostructure; photocatalytic reduction; CO2
Funding
- National Basic Research Program of China [2017YFA0303504]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Visible light-driven photocatalytic reduction of CO2 into value-added chemical fuel is considered as an up-and-coming pathway for CO2 conversion utilizing green solar energy. Herein, we report heterostructures of NH2 -MIL-101(Fe)/g-C3N4 (g-C3N4 = polymeric graphite-like carbon nitride) as prominent photocatalysts for the reduction of CO2 via a solvent-free reaction. Among these heterogeneous photocatalysts, NH2-MIL-101(Fe)/g-C3N4-30 wt % referred to as MCN-3 shows superior catalytic activity for photocatalytic reduction of CO2 to CO with a CO yield of 132.8 mu mol g(-1), which is more than 3.6 times higher than that for pristine NH2-MIL-101(Fe) and 6.9 times higher than that for sole g-C3N4. In virtue of the elaborate designed photocatalysts and the gas-solid interfacial route, the heterostructure of NH2 -MIL-101(Fe)/g-C3N4 with efficient interfacial electron transfer between NH2-MIL-101(Fe) and g-C3N4 results in the boosted photocatalytic reduction of CO2 upon visible light irradiation.
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