Enhanced Photocatalytic CO2 Reduction over Ni-doped Bi4O5Br2/NiCo2O4 Heterojunction: Synergistic Enhancement Effect between Spin Polarization and Built-in Electric Field | Sciact - CRIS-system of Boreskov Institute of Catalysis

Enhanced Photocatalytic CO2 Reduction over Ni-doped Bi4O5Br2/NiCo2O4 Heterojunction: Synergistic Enhancement Effect between Spin Polarization and Built-in Electric Field Full article

Journal

ACS Sustainable Chemistry & Engineering
ISSN: 2168-0485

Output data

Year: 2025, Volume: 13, Number: 2, Pages: 1095–1105 Pages count : 11 DOI: 10.1021/acssuschemeng.4c09246

Tags

CO2 reduction, Photocatalysis, Spin polarization, Built-in electric field, Synergistic effect

Authors

Yang Zhixiong ¹ , Hu Bo ¹ , Wang Xiaotian ¹ , Selishchev Dmitry ² , Zhang Gaoke ¹

Affiliations

1	Hubei Key Laboratory of Mineral Resources Processing and Environment, Key Laboratory of Green Utilization of Critical Non-metallic Mineral Resources, Ministry of Education, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, 122 Luoshi Road, Wuhan 430070, China
2	Department of Unconventional Catalytic Processes, Boreskov Institute of Catalysis, Novosibirsk, 630090, Russia

The development of high-performance photocatalysts is crucial for enabling efficient CO2 conversion in photocatalytic systems. Here, we developed a novel heterojunction (N-BON) composed of Ni-doped Bi4O5Br2 and NiCo2O4 for CO2 photoreduction with the help of simulated sunlight. The optimized 21N-BON composite exhibited the highest activity, producing 18.66 μmol·g–1·h–1 of CO with a selectivity of 95.7%, which represents a remarkable 2.15-fold and 4.75-fold increase in CO yield compared to the Bi4O5Br2/NiCo2O4 heterojunction and Ni-doped Bi4O5Br2, respectively. Photoelectrochemical testing, photoluminescence analysis, and theoretical calculations demonstrated that the enhanced performance of the 21N-BON composite is attributed to improved photogenerated carrier separation, driven by the synergistic effects of Ni-doping-induced spin polarization and the built-in electric field from heterojunction construction. Additionally, theoretical calculations and in situ DRIFTS analyses was used to clarify the CO2 reaction mechanisms on the photocatalyst surface, showing that Ni doping improved CO2 adsorption and promoted the formation of key reaction intermediates. This study offers important guidance for developing advanced photocatalysts for solar-driven CO2 reduction, contributing to sustainable energy solutions.

Yang Z. , Hu B. , Wang X. , Selishchev D. , Zhang G.
Enhanced Photocatalytic CO2 Reduction over Ni-doped Bi4O5Br2/NiCo2O4 Heterojunction: Synergistic Enhancement Effect between Spin Polarization and Built-in Electric Field
ACS Sustainable Chemistry & Engineering. 2025. V.13. N2. P.1095–1105. DOI: 10.1021/acssuschemeng.4c09246 WOS Scopus OpenAlex

Published online:	Jan 5, 2025
Published print:	Jan 20, 2025

Web of science:	WOS:001391587700001
Scopus:	2-s2.0-85215376736
OpenAlex:	W4406082398

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