期刊
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
卷 10, 期 -, 页码 912-921出版社
BEILSTEIN-INSTITUT
DOI: 10.3762/bjnano.10.92
关键词
C-doped g-C3N4; CdIn2S4; composite materials; hydrogen generation; photocatalysis
资金
- National Natural Science Foundation of China [21471001, 21575001, 21706002, 51771001]
- Natural Science Foundation of Anhui Province [1508085MB37, 1808085QB53]
- Key Project of Anhui Provincial Education Department [KJ2013A029, KJ2014A016]
- Research Fund of School of Chemistry and Chemical Engineering (Anhui University)
Photocatalytic hydrogen generation from water splitting has become a favorable route for the utilization of solar energy. An effective strategy, the combination of C-doping with nanocomposite semiconductors, is presented in this work. C-doped g-C3N4 (CCN) was prepared by supramolecular self-assembly and subsequently a number of CdIn2S4/CCN composite photocatalysts were designed and fabricated though in situ decoration of CdIn2S4 crystals on the surface of CCN nanosheets via a hydrothermal method. This unique architecture was able to efficiently promote the transfer and separation of photon-generated charges, enhance light absorption, and significantly increase photocatalytic H-2 production. Detailed characterization was performed to analyze the crystal structure, morphology, elementary composition, optical properties and catalytic mechanism. The CdIn2S4/CCN nanocomposites with optimal CdIn2S4 content exhibited a maximum H-2 production rate of 2985 mu mol h(-1) g(-1), almost 15 times more than that obtained using pure g-C3N4 (205 mu mol h(-1) g(-1)). In addition, the hybrid photocatalysts display good recycling stability under visible-light irradiation. This research may provide promising information for the preparation of more efficient multifunctional hybrid photocatalysts with excellent stability in fine chemical engineering.
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