Boosting Photocatalytic CO2 Reduction Efficiency by Heterostructures of NH2‑MIL-101(Fe)/g‑C3N4

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...

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Published inACS applied energy materials Vol. 3; no. 4; pp. 3946 - 3954
Main Authors Dao, Xiao-Yao, Xie, Xia-Fei, Guo, Jin-Han, Zhang, Xiao-Yu, Kang, Yan-Shang, Sun, Wei-Yin
Format Journal Article
LanguageEnglish
Japanese
Published American Chemical Society 27.04.2020
Subjects
g-C3N4
photocatalytic reduction
heterostructure
metal−organic frameworks
NH2-MIL-101(Fe)
CO2
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Summary: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 μmol 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.
ISSN:2574-0962
2574-0962
DOI:10.1021/acsaem.0c00352