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Issue 43, 2014
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Inorganic–organic hybrid NiO–g-C3N4 photocatalyst for efficient methylene blue degradation using visible light

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Abstract

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.

Graphical abstract: Inorganic–organic hybrid NiO–g-C3N4 photocatalyst for efficient methylene blue degradation using visible light

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Supplementary files

Article information


Submitted
21 Feb 2014
Accepted
06 May 2014
First published
07 May 2014

RSC Adv., 2014,4, 22491-22496
Article type
Paper
Author version available

Inorganic–organic hybrid NiO–g-C3N4 photocatalyst for efficient methylene blue degradation using visible light

H. Chen, L. Qiu, J. Xiao, S. Ye, X. Jiang and Y. Yuan, RSC Adv., 2014, 4, 22491
DOI: 10.1039/C4RA01519C

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