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Facile and sustainable synthesis of carbon-doped ZnO nanostructures towards the superior visible light photocatalytic performance

Abstract

This paper reports a facile and one-step thermal decomposition method for the fabrication of carbon-doped ZnO (C-ZnO) at different temperatures using commercially available melamine and zinc nitrate hexahydrate as the starting materials. The resulting photocatalyst, i.e., bare ZnO (B-ZnO) and C-ZnO, was characterized using a range of spectroscopic and microscopic techniques. The photocatalytic performance of the as-prepared photocatalyst was assessed by the degradation of a model pollutant, rhodamine B, under visible light irradiation. C-ZnO exhibited a significantly higher degradation response than B-ZnO, which could be attributed to the narrow band gap and improved electron / hole separation efficiency, as confirmed by UV-vis diffuse absorption/reflectance, photoluminescence and electrochemical impedance spectroscopy. Linear scan voltammetry in the dark and under visible light exposure showed that C-ZnO possessed a higher photocurrent than the B-ZnO under similar experimental conditions. This methodology can also be a potential route for the development of nanocatalysts by a simple thermal decomposition method that can be commercialized.

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Publication details

The article was received on 25 Dec 2016, accepted on 13 Jul 2017 and first published on 14 Jul 2017


Article type: Paper
DOI: 10.1039/C6NJ04070E
Citation: New J. Chem., 2017, Accepted Manuscript
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    Facile and sustainable synthesis of carbon-doped ZnO nanostructures towards the superior visible light photocatalytic performance

    S. A. Ansari and M. H. Cho, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C6NJ04070E

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