Sciact
  • EN
  • RU

ZnO/COF S-scheme heterojunction for improved photocatalytic H2O2 production performance Научная публикация

Журнал Chemical Engineering Journal
ISSN: 1385-8947
Вых. Данные Год: 2022, Том: 444, Номер статьи : 136584, Страниц : DOI: 10.1016/j.cej.2022.136584
Ключевые слова Charge transfer and separation; Covalent organic frameworks; Photocatalytic H2O2 production; S-scheme heterojunction; ZnO
Авторы Zhang Y. 1 , Qiu J. 3 , Zhu B. 2 , Fedin M.V. 4 , Cheng B. 3 , Yu J. 2 , Zhang L. 2
Организации
1 School of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi 435003, People’s Republic of China
2 Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan 430074, People’s Republic of China
3 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, People’s Republic of China
4 Laboratory of Magnetic Resonance, International Tomography Center, Institutskaya 3A, Novosibirsk 630090, Russia

Реферат: Covalent organic frameworks (COFs) are burgeoning crystalline porous materials with great potential in photocatalysis, but their applications are mainly restricted by the speedy recombination rate of charge carriers. Herein, a step-scheme heterojunction ZnO/COF(TpPa-Cl) is fabricated by a simple electrostatic self-assembly method, and its photocatalytic H2O2 production performance is also investigated. The S-scheme heterojunction between ZnO and TpPa-Cl contributes to enhanced light absorption, promoted reactant adsorption capacity, increased redox power, and efficient separation and transfer of photogenerated charge carriers, leading to an improved photocatalytic H2O2 evolution activity. The optimal composite possesses the maximum H2O2 evolution rate of 2443 μmol·g−1·h−1 under simulated solar light irradiation, which is about 3.3 and 8.7 times higher than pristine ZnO nanoparticles and TpPa-Cl, respectively. Moreover, the charge transfer pathway in S-scheme heterojunction photocatalysts is well elucidated. This investigation provides designing guidelines in the construction of other COF-based S-scheme heterojunctions. © 2022 Elsevier B.V.
Библиографическая ссылка: Zhang Y. , Qiu J. , Zhu B. , Fedin M.V. , Cheng B. , Yu J. , Zhang L.
ZnO/COF S-scheme heterojunction for improved photocatalytic H2O2 production performance
Chemical Engineering Journal. 2022. V.444. 136584 . DOI: 10.1016/j.cej.2022.136584 WOS Scopus OpenAlex
Идентификаторы БД:
Web of science: WOS:000800389600002
Scopus: 2-s2.0-85129607560
OpenAlex: W4224629874
Цитирование в БД:
БД Цитирований
Scopus 171
OpenAlex 204
Web of science 237
Альметрики: