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Issue 4, 2012
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ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for toxic gas degradation under visible light at room temperature

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Abstract

ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of toxic gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.

Graphical abstract: ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for toxic gas degradation under visible light at room temperature

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Publication details

The article was received on 03 Oct 2011, accepted on 18 Jan 2012 and first published on 13 Feb 2012


Article type: Paper
DOI: 10.1039/C2NJ20959D
Citation: New J. Chem., 2012,36, 1031-1035
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    ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for toxic gas degradation under visible light at room temperature

    H. Yu, H. Zhang, H. Huang, Y. Liu, H. Li, H. Ming and Z. Kang, New J. Chem., 2012, 36, 1031
    DOI: 10.1039/C2NJ20959D

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