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- Title
TiO<sub>2</sub>-Based Double-Shelled Homojunction Hollow Spheres Decorated with Spatially Separated Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution.
- Authors
Chen, Feng; Hou, Xinyi; Jiao, Peixin; Zhao, Caixian
- Abstract
Efficient separation of photogenerated carriers and surface reactions is the crucial factor in achieving successful photocatalytic water splitting. Herein, a novel Pt@Co-T@T@M hollow sphere was prepared by a template-assisted method. Pt was anchored on the inner surface of Co-doped TiO2 shell, serving as electron collectors and active sites for reduction reaction, while MnOX was immobilized on the outer surface of TiO2 shell for oxidation reaction. Under simulated one-sun (AM 1.5G) illumination, the as-prepared Pt@Co-T@T@M hollow spheres exhibited a remarkable hydrogen evolution rate of 7.304 mmol g−1 h−1, which is 114 times higher than that of T@T hollow spheres. The exceptional photocatalytic water-splitting performance is attributed to the synergistic effect between homojunction and spatial dual-cocatalyst, which promotes enhanced spatial separation of photogenerated carriers and reduces recombination. This study highlights the importance of precise and rational control over photocatalyst structure for achieving highly efficient water splitting.
- Subjects
SPHERES; SURFACE reactions; HYDROGEN; DOPING agents (Chemistry)
- Publication
Catalysis Letters, 2024, Vol 154, Issue 7, p3924
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-024-04611-3