Fe-Decorated Bi2WO6/TiO2-N Heterostructure Photocatalyst for Enhanced Visible Light-Driven Degradation of Organic Micropollutants in Air | Sciact - CRIS-system of Boreskov Institute of Catalysis

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

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.

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 WOS Scopus OpenAlex

Submitted:	Jun 22, 2025
Accepted:	Sep 10, 2025
Published online:	Sep 14, 2025
Published print:	Feb 1, 2026

Web of science:	WOS:001576884800001
Scopus:	2-s2.0-105016307772
OpenAlex:	W4414189693

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