journal article·2021-04-05

Single-Atom Fe Triggers Superb CO2 Photoreduction on a Bismuth-Rich Catalyst

Xiaoli Jin, Yixue Xu, Xin Zhou, Chade Lv, Qunzeng Huang, Gang Chen, Haiquan Xie, Teng Ge, Jian Cao, Jinquan Zhan, Liqun Ye

ACS Materials Letters· Volume 3· Issue 4
Publisher page

Abstract

Insufficient separation of photogenerated electron–hole and feeble CO2 activation remain the main obstacles in the access to high-performance CO2 reduction nowadays. Single-atom active sites engineering could be an efficient method through simultaneously promoting charge separation and CO2 activation. Herein, a model of Bi4O5I2 with single-atom Fe implanting and accompanying Bi decorating on surface is proposed to boost the performance. The single-atom Fe implantation decreases the value of surface work function, allowing the fast transition of photon-generated electrons from the surface of catalyst to CO2 molecule. In situ Fourier transform infrared (FT-IR) spectra, CO2 adsorption measurements, density functional theory (DFT) calculations, and efficient CO2 activation are realized on as-established single-atom catalyst. An exceptional yield of CO (23.77 μmol g–1 h–1) and CH4 production (4.98 μmol g–1 h–1) is acquired over optimized Bi4O5I2–Fe30 with 1.09 wt % of single-atom Fe, superior to Bi4O5I2, and most other reported photocatalysts. The work paves a insight into rational design of photocatalysts toward simultaneously facilitating carrier separation and CO2 activation from the angle of atom single metal.
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Research context

OpenAlex topics: Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science · Copper-based nanomaterials and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Engineering Technology-Research Center of Henan Province for Solar Catalysis, College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, 473061, P. R. China

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China

School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore

College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, 443002, P. R. China

Funding

Natural Science Foundation of Henan Province · State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · National Natural Science Foundation of China · Program for Innovative Research Team of Science and Technology in the University of Henan Province

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