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 |
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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 |
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Affiliations |
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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
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:
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