期刊
RSC ADVANCES
卷 4, 期 43, 页码 22491-22496出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra01519c
关键词
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资金
- National Natural Science Foundation of China [20371002]
- Anhui Provincial Natural Science Foundation [1408085MB22]
- National 211 Project of Anhui University
Inorganic-organic hybrid NiO-g-C3N4 photocatalysts with different NiO contents were prepared through a simple calcination method. The as-prepared photocatalysts were characterized by powder X-ray diffraction (PXRD), thermo-gravimetric analysis (TGA), the Brunauer-Emmett-Teller (BET) method, high-resolution transmission electron microscopy (HR-TEM), and UV-vis diffuse reflection spectroscopy (UV-vis). The photocatalytic degradation of methylene blue (MB) over NiO-g-C3N4 was investigated. The incorporation of NiO caused a red-shift of the UV-vis absorption edge of g-C3N4. And the NiO-g-C3N4 photocatalysts exhibited a significantly enhanced photocatalytic activity in degrading MB using visible light, and the optimum hybrid photocatalyst with 6.3 wt% NiO showed a 2.3 times enhanced MB degradation rate. The improved photoactivity of NiO-g-C3N4 photocatalysts could be ascribed to the effective interfacial charge transfer between NiO and g-C3N4, thus suppressing the recombination of the photoexcited electron-hole pairs. Furthermore, the NiO-g-C3N4 photocatalyst showed excellent stability for the photocatalytic degradation of MB.
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