期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 219, 期 -, 页码 101-108出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2017.07.046
关键词
Photocatalysis; Ti-containing MOF; Graphitic carbon nitride; NiPd co-catalysts; H-2 production
资金
- National Natural Science Foundation of China [51404143]
- Shandong Provincial Natural Science Foundation, China [2015ZRB01A0D]
In this study, a highly efficient photocatalyst,NH2-MIL-125(Ti)/g-C3N4/NiPd (NH2-MIL-125(Ti)/CN/NiPd), was successfully synthesized for photocatalytic water reduction to produce H-2. Under visible-light irradiation, the prepared NH2-MIL-125(Ti)/CN/NiPd composite clearly showed enhanced photocatalytic performance for H-2 evolution compared to NH2-MIL-125(Ti), NH2-MIL-125(Ti)/CN, and NH2-MIL125(Ti)/NiPd. The as-synthesized NH2-MIL-125(Ti)/0.75CN/Ni15.8Pd2.1 photocatalyst exhibited a high H-2 production rate of 8.7 mmol g(-1) h(-1), 322 and 1.3 times higher than those of NH2-MIL-125(Ti)/0.75CN and NH2-MIL-125(Ti)/Ni(15.8)Pd4.1, respectively. The enhanced photocatalytic performance can be attributed to the intimate interfacial contact between NH2-MIL-125(Ti) and CN, accelerating the charge transfer, as well as loaded NiPd nanoparticles, increasing the light-absorbing capacity and accelerating the charge transfer of NH2-MIL-125(Ti)/CN. This work demonstrates that the addition of appropriate co-catalysts onto MOF/CN hybrid with intimate contact interface provides a new approach to design highly efficient and solar-energy-harvesting photocatalysts. (C) 2017 Elsevier B.V. All rights reserved.
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