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Enhanced photocatalytic activity in water splitting for hydrogen generation by using TiO2 coated carbon fiber with high reusability

Nguyen Department of Science and Technology and International Affairs, HUTECH University, 475A Dien Bien Phu Street, Ward 25, Binh Thanh District, Ho Chi Minh City, 700000, Viet Nam|
Taeyoung (55628533815) | Thi Thu Hien (57778506800); Kim | Minh Viet (55235210400); Chu | Quyet (56157505100); Nguyen | Mitesh G. (57219943185); Van Le | Man Hieu (57778841600); Mapari | Sung Hoon (57200409582); Tran Department of Chemistry, Faculty of Building Materials, Ha Noi University of Civil Engineering (HUCE), Giai Phong, Hai Ba Trung, Hanoi, 10000, Viet Nam| Yusik (57200412256); Jung VNU–Key Laboratory of Advanced Materials for Green Growth, Faculty of Chemistry, University of Science, Vietnam National University, Hanoi, Viet Nam| Thi Huong (57205429786); Myung Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, South Korea| Thanh Luan (57193007964); Pham Department of Materials Science and Engineering, Gachon University, 1342 Seongnam-daero, Sujeong-gu, Seongnam, 13120, South Korea|

International Journal of Hydrogen Energy Số 98, năm 2022 (Tập 47, trang 41621-41630)

ISSN: 3603199

ISSN: 3603199

DOI: 10.1016/j.ijhydene.2022.06.025

Tài liệu thuộc danh mục:

Article

English

Từ khóa: Activated carbon; Gas adsorption; Hydrogen production; Light absorption; Photocatalytic activity; Reusability; Scanning electron microscopy; Titanium dioxide; X ray photoelectron spectroscopy; Activated carbon fibres; H 2 evolution; H2 generation; Hydrogen generations; Photo-catalytic; Photocatalytic activities; Renewable energies; Synthesised; TiO 2; Water splitting; Carbon fibers
Tóm tắt tiếng anh
In this study, TiO2 coated carbon fiber (TiO2@CF) was synthesized and used for the improvement of hydrogen (H2) evolution. Obtained results from scanning electron microscopy (SEM), X-ray diffraction (XRD), gas adsorption analysis (BET), UV–vis diffuse (UV–vis), and X-ray photoelectron spectroscopy (XPS) confirmed that the surface area and light absorption of the material was significantly improved. The synthesized TiO2@CF photocatalyst exhibited improved photocatalytic performance toward hydrogen generation. The enhancement of photocatalytic H2 evolution capacity by TiO2@CF was ascribed to its narrowed bandgap energy (2.76eV) and minimized recombination of photogenerated electron-hole pairs The hydrogen production rate by the TiO2@CF reached 3.238 mmolg−1h−1, which was 4.8 times higher than unmodified TiO2 (0.674 mmolg−1h−1). The synthesized TiO2@CF was relatively stable with no distinct reduction in photocatalytic activity after five recycling runs. The photoluminescence and photocurrent were employed to support the photocatalytic H2 production mechanism proposed mechanism. Based on these results, TiO2@CF with unique properties, easy handle, and high reusability could be suggested as an efficient strategy to develop a high-performance photocatalyst for H2 production. © 2022 Hydrogen Energy Publications LLC

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