A Mixed-Metal Porphyrinic Framework Promoting Gas-Phase CO2 Photoreduction without Organic Sacrificial Agents

Wen-Yang Gao; Huong T Ngo; Zheng Niu; Weijie Zhang; Yanxiong Pan; Zhongyu Yang; Venkat R Bhethanabotla; Babu Joseph; Briana Aguila; Shengqian Ma

doi:10.1002/cssc.202001610

A Mixed-Metal Porphyrinic Framework Promoting Gas-Phase CO₂ Photoreduction without Organic Sacrificial Agents

ChemSusChem. 2020 Dec 7;13(23):6273-6277. doi: 10.1002/cssc.202001610. Epub 2020 Aug 24.

Authors

Wen-Yang Gao¹, Huong T Ngo², Zheng Niu³, Weijie Zhang⁴, Yanxiong Pan⁵, Zhongyu Yang⁵, Venkat R Bhethanabotla², Babu Joseph², Briana Aguila⁶, Shengqian Ma^{4

7}

Affiliations

¹ Department of Chemistry, New Mexico Institute of Mining & Technology, 801 Leroy Place, Socorro, New Mexico, 87801, United States.
² Department of Chemical and Biomedical Engineering, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States.
³ College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, Jiangsu, P. R. China.
⁴ Department of Chemistry, University of North Texas, 1508 W Mulberry St, Denton, TX 76201, United States.
⁵ Department of Chemistry and Biochemistry, North Dakota State University, 1231 Albrecht Bld., Fargo, ND 58108, United States.
⁶ Department of Chemistry, Francis Marion University, 4822 E. Palmetto St, Florence, SC 29506, United States.
⁷ Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620, United States).

PMID: 32743964
DOI: 10.1002/cssc.202001610

Abstract

A photoactive porphyrinic metal-organic framework (MOF) has been prepared by exchanging Ti into a Zr-based MOF precursor. The resultant mixed-metal Ti/Zr porphyrinic MOF demonstrates much-improved efficiency for gas-phase CO₂ photoreduction into CH₄ and CO under visible-light irradiation using water vapor compared to the parent Zr-MOF. Insightful studies have been conducted to probe the photocatalysis processes. This work provides the first example of gas-phase CO₂ photoreduction into methane without organic sacrificial agents on a MOF platform, thereby paving an avenue for developing MOF-based photocatalysts for application in CO₂ photoreduction and other types of photoreactions.

Keywords: carbon dioxide; ion exchange; metal−organic frameworks; photocatalysis; porphyrinoids.

Abstract

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