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Selecting a Synthetic Route of Copper-Modified g-C3N4/TiO2 Photocatalysts for Efficient CO2 Reduction Full article

Journal Inorganic Chemistry Communications
ISSN: 1387-7003
Output data Year: 2025, Volume: 173, Article number : 113863, Pages count : 10 DOI: 10.1016/j.inoche.2024.113863
Tags Photocatalyst; Photocatalysis; TiO2; g-C3N4; Copper cocatalyst; CO2 reduction
Authors Kurenkova Anna Yu. 1 , Saraev Andrey A. 1,2 , Alekseev Roman F. 1,3 , Zhurenok Angelina V. 1 , Mishchenko Denis D. 1,2 , Gerasimov Evgeny Yu. 1 , Kozlova Ekaterina A. 1
Affiliations
1 Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 5 prosp. Lavrent’eva, 630090 Novosibirsk, Russian Federation
2 Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis SB RAS, Nikol’skiy Ave. 1, 630559 Koltsovo, Russian Federation
3 Novosibirsk State University, Pirogova str. 1, 630090 Novosibirsk, Russian Federation

Funding (1)

1 Ministry of Science and Higher Education of the Russian Federation 075-15-2022-263

Abstract: CO2 utilization is an urgent task for sustainable development, and one of the promising approaches for CO2 conversion is photocatalysis. In this work, photocatalysts based on g-C3N4/TiO2 heterostructures and modified with copper were synthesized and studied in photocatalytic CO2 reduction under light irradiation (400 nm and simulated solar light). The photocatalysts were synthesized by a simple deposition method and characterized by a set of physicochemical methods. In-situ diffuse reflectance infrared Fourier transform spectroscopy was used to study processes over photocatalyst surface under light irradiation. The influence of the deposition order of components (CuOx and g-C3N4) to TiO2 on the structure and photocatalytic properties of samples was established. The highest activity was demonstrated by the photocatalyst prepared by the deposition of g-C3N4 on copper-modified TiO2. This photocatalyst g-C3N4/CuOx/TiO2 showed the highest total rate of electron consumed during CO2 reduction of 102 μmol h− 1 g− 1 under LED (λmax = 400 nm) and 8.1 μmol h− 1 g− 1 under simulated solar light irradiation (AM1.5G) which are 14 and 16 times higher than that TiO2 Evonik P25, respectively. The synergistic effect of TiO2 modification with g-C3N4 and CuOx for photocatalytic CO2 reduction in the solid–gas mode is demonstrated for the first time.
Cite: Kurenkova A.Y. , Saraev A.A. , Alekseev R.F. , Zhurenok A.V. , Mishchenko D.D. , Gerasimov E.Y. , Kozlova E.A.
Selecting a Synthetic Route of Copper-Modified g-C3N4/TiO2 Photocatalysts for Efficient CO2 Reduction
Inorganic Chemistry Communications. 2025. V.173. 113863 :1-10. DOI: 10.1016/j.inoche.2024.113863 WOS Scopus AN OpenAlex publication_identifier_short.sciact_skif_identifier_type
Dates:
Submitted: Sep 6, 2024
Accepted: Dec 29, 2024
Published online: Dec 31, 2024
Published print: Mar 1, 2025
Identifiers:
Web of science: WOS:001409343700001
Scopus: 2-s2.0-85214336295
Chemical Abstracts: 2025:89946
OpenAlex: W4405962043
publication_identifier.sciact_skif_identifier_type: 3654
Citing: Пока нет цитирований
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