Fe-Decorated Bi2WO6/TiO2-N Heterostructure Photocatalyst for Enhanced Visible Light-Driven Degradation of Organic Micropollutants in Air
Научная публикация
| Журнал |
Separation and Purification Technology
ISSN: 1383-5866
|
| Вых. Данные |
Год: 2026,
Том: 380,
Номер: Part 1,
Номер статьи
: 135146,
Страниц
: 19
DOI:
10.1016/j.seppur.2025.135146
|
| Ключевые слова |
Visible-light photocatalysis; VOC degradation; Formaldehyde degradation; N-doped TiO2 (TiO2-N); Bismuth tungstate (Bi2WO6); Heterojunction; Fe(III) grafting |
| Авторы |
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
|
| Организации |
| 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
|
|
Информация о финансировании (2)
|
1
|
Российский научный фонд
|
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.