TiO2/Ti3C2/g-C3N4 ternary heterojunction for photocatalytic hydrogen evolution

Thạc sĩNguyễn Thanh QuangVu Quang Hieu, Truong Chi lam, Afrasyab Khan, Thu-Thao Thi Vo, Van Dat Doan, Dai lam Tran, Van Thuan Le, Vy Anh Tran

Khoa Công Nghệ

Thể loại: Bài báo

Sơ lược nội dung

Photocatalytic hydrogen (H2) generation derived by water has been considered as a renewable energy to solve environmental problems and global energy crises. Thus, it is necessary to explore the most effective photocatalysts by using multi-cocatalysts, due to an intimate interaction between different components. Therefore, we already synthesized the TiO2/Ti3C2/g-C3N4 (TTC) photocatalyst from g-C3N4 and Ti3C2 MXene via a calcination technique, and applied this composite for H2 evolution. By making use of titanium atom from Ti3C2 MXene, titanium dioxide (TiO2) was in-body developed, which leads to form a close heterostructure between metallic material and semiconductors. Besides, g-C3N4 amorphous with highly surface area also contributes to harvest light irradiation during photocatalytic activity. The optimized TTC-450 heterostructure showed a super H2 generation efficiency than those of pure g-C3N4 and other samples. Besides, TTC-450 sample also exhibited great recyclability after 4 runs. The proposed mechanism illustrates the efficient movement of generated electrons in TTC system, which leads to high H2 evolution efficiency. Moreover, the obtained results consistently emphasize the TiO2/Ti3C2/g-C3N4 composite would be a unique material for H2 production and broaden applications of MXene materials.

Thông tin chung
Thể loại
Bài báo
Năm xuất bản
Thg12 2021
Ngôn ngữ gốc
Tiếng Anh
Tạp chí công bố
Ấn phẩm số
Vol. 285
Loại tạp chí
Danh mục ISI/Scopus
Chất lượng

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