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Fe-Decorated Bi2WO6/TiO2-N Heterostructure Photocatalyst for Enhanced Visible Light-Driven Degradation of Organic Micropollutants in Air Full article

Journal Separation and Purification Technology
ISSN: 1383-5866
Output data Year: 2026, Volume: 380, Number: Part 1, Article number : 135146, Pages count : 19 DOI: 10.1016/j.seppur.2025.135146
Tags Visible-light photocatalysis; VOC degradation; Formaldehyde degradation; N-doped TiO2 (TiO2-N); Bismuth tungstate (Bi2WO6); Heterojunction; Fe(III) grafting
Authors Selishchev Dmitry 1 , Lyulyukin Mikhail 1 , Polskikh Danil 1 , Kovalevskaya Ksenia 1 , Selishcheva Svetlana 1 , Cherepanova Svetlana 1 , Gerasimov Evgeny 1 , Bukhtiyarov Andrey 1 , Li Yuan 2 , Zhang Gaoke 2
Affiliations
1 Boreskov Institute of Catalysis SB RAS, Novosibirsk 630090, Russian Federation
2 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, Wuhan 430070, People's Republic of China

Funding (2)

1 Russian Science Foundation 24-43-00182
2 National Natural Science Foundation of China 22361132537

Abstract: Heterostructured compositions of semiconducting photocatalysts can substantially enhance the separation of photogenerated charges due to their improved interphase transfer by heterojunction. In this study, Bi2WO6/TiO2‑N heterostructures were successfully prepared via the hydrothermal method using visible light-active TiO2‑N nanoparticles of anatase phase as the starting material and solutions of Bi(NO3)3 and Na2WO4 as the precursors of Bi2WO6. A ratio between components was varied in a wide range to find the optimum for enhanced activity and stability of the heterostructure. The mechanism of Bi2WO6 nucleation at the presence of TiO2‑N nanoparticles was studied using XRD, high-resolution TEM, EDX, and XRF analyses, whereas the electrochemical impedance spectroscopy was employed to explain the synergistic effect of composite system. The optimized Bi2WO6/TiO2‑N composition containing 21 wt% of Bi2WO6 was further decorated with Fe species (0.1 wt%) to boost the visible-light activity. Photocatalytic ability of designed multicomponent Fe/Bi2WO6/TiO2‑N photocatalyst was evaluated in the degradation of acetone and formaldehyde vapor under blue light. In all cases, Fe-decorated Bi2WO6/TiO2‑N heterostructure exhibited higher photocatalytic performance and provided much faster air purification compared to single-component TiO2‑N photocatalyst that confirms a strong potential of its application for visible light-driven degradation of organic micropollutants in air.
Cite: Selishchev D. , Lyulyukin M. , Polskikh D. , Kovalevskaya K. , Selishcheva S. , Cherepanova S. , Gerasimov E. , Bukhtiyarov A. , Li Y. , Zhang G.
Fe-Decorated Bi2WO6/TiO2-N Heterostructure Photocatalyst for Enhanced Visible Light-Driven Degradation of Organic Micropollutants in Air
Separation and Purification Technology. 2026. V.380. NPart 1. 135146 :1-19. DOI: 10.1016/j.seppur.2025.135146 Scopus OpenAlex
Dates:
Submitted: Jun 22, 2025
Accepted: Sep 10, 2025
Published online: Sep 14, 2025
Published print: Feb 1, 2026
Identifiers:
Scopus: 2-s2.0-105016307772
OpenAlex: W4414189693
Citing: Пока нет цитирований
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