A coupled system accelerating the photocatalytic reduction of in situ captured CO2 to methane

Shichao Zhang; Xueyuan Wang; Genheng Li; Yang Liu; Di Huang; Tengfei Yang; Junju Mu; Yingping Huang; Chaofeng Zhang; Feng Wang

doi:10.1039/D5CC02892B

A coupled system accelerating the photocatalytic reduction of in situ captured CO₂ to methane†

Shichao Zhang,

^ac Xueyuan Wang,^c Genheng Li,^c Yang Liu,^a Di Huang,*^a Tengfei Yang,^a Junju Mu,^c Yingping Huang,^a Chaofeng Zhang

*^bc and Feng Wang

*^c

Author affiliations

* Corresponding authors

^a Engineering Research Center of Eco-environment in Three Gorges Reservoir Region of Ministry of Education, China Three Gorges University, Yichang 443002, China
E-mail: huangdi@ctgu.edu.cn

^b Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
E-mail: zhangchaofeng@njfu.edu.cn

^c State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
E-mail: wangfeng@dicp.ac.cn

Abstract

Herein, we develop a flow-coupled system using a bifunctional Pd/TiO₂–TEPA/SiO₂ composite that integrates CO₂ capture and photocatalytic reduction. The amine-functionalized SiO₂ pores selectively enrich diluted CO₂ (10%) near Pd/TiO₂ active sites, creating a CO₂-rich microenvironment that promotes CO₂ adsorption and lowers the energy barrier for *COOH intermediate formation. This system boosts the conversion of diluted CO₂ into CH₄ with a production rate of up to 5.5 μmol h⁻¹, and the alkane selectivity reaches nearly 100%, representing a fivefold improvement over the standalone Pd/TiO₂ system.

Chemical Communications

A coupled system accelerating the photocatalytic reduction of in situ captured CO₂ to methane†

Abstract

Supplementary files

Article information

Download Citation

Permissions

A coupled system accelerating the photocatalytic reduction of in situ captured CO₂ to methane

Social activity

Search articles by author

Spotlight

Advertisements

Chemical Communications