Effect of microstructure and reaction medium on photocatalytic performance and stability of BiO catalyst for CO2 reduction

Caihong Ni; Manhong Huang; Mei Ren; Xiaoliang Li; Xiaoliang Yan; Songmei Sun

Catalysis Communications (Jan 2023)

Effect of microstructure and reaction medium on photocatalytic performance and stability of BiO catalyst for CO2 reduction

Caihong Ni,
Manhong Huang,
Mei Ren,
Xiaoliang Li,
Xiaoliang Yan,
Songmei Sun

Affiliations

Caihong Ni: Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
Manhong Huang: Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai 200092, China
Mei Ren: Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
Xiaoliang Li: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, China
Xiaoliang Yan: State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, China
Songmei Sun: Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, 1239 Siping Road, Shanghai 200092, China; Corresponding author at: Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China.

Journal volume & issue: Vol. 173
p. 106565

Abstract

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Control the microstructure of the photocatalyst and change the reaction medium have great potential to improve activity and selectivity of a photocatalyst. Herein, we prepared ordered mesoporous and quantum dot BiO with similar grain size, and then studied their CO2 reduction performance under different reaction mediums. The results revealed that the activity, selectivity and stability of a photocatalyst are importantly influenced by reaction medium and microstructure of a photocatalyst. Under the same conditions, quantum dot BiO exhibited higher activity but much lower stability than mesoporous structure. More importantly, it was found gas-solid reaction are more efficient than liquid-solid reaction mode.

Published in Catalysis Communications

ISSN: 1566-7367 (Print); 1873-3905 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Chemistry
Website: https://www.journals.elsevier.com/catalysis-communications

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