Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 46, Issue 27, Pages 14236-14246Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2021.01.159
Keywords
Photocatalytic H-2 evolution; Zn0.5Cd0.5S; Solid solution; Z-scheme; NeTiO2-x/C
Categories
Funding
- Natural Science Foundation of China [22071018, 21671035]
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Black N-doped TiO2-x nanoparticles loaded on a carbon framework were successfully prepared by sol-gel method. The synthesized NTC material combined with Cd0.5Zn0.5S short nanorods to form a direct Z-scheme photocatalyst. The 2% NTC/ZCS showed an optimal photocatalytic H-2 production rate, significantly higher than that of pristine ZCS nanorods.
Black N doped TiO2-x nanoparticles loaded on the carbon framework (NeTiO2-x/C, NTC) were successfully fabricated by sol-gel method. In this work, the synthesized NTC material was combined with Cd0.5Zn0.5S (ZCS) short nanorods, forming a direct Z-scheme NTC/ZCS photocatalyst without using of electron mediator. The free radicals trapping experiment was also conducted through the degradation of RhB to determine photocatalytic mechanism. As a result, the 2% NTC/ZCS exhibited an optimal photocatalytic H-2 production rate which is up to 36.6 mmol/h/g and about 5.2 times higher than that of pristine ZCS nanorods. The apparent quantum efficiency (AQE) of the 2% NTC/ZCS hybrids at wavelength 420 nm was calculated to 51.2%. Moreover, long-term drying increases the close contact between NTC and ZCS, and this firm contact interface can promote charge transfer and improve photocatalytic stability of NTC/ZCS composite. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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