Harish, S. and Archana, J. and Navaneethan, M. and Ponnusamy, S. and Singh, Ajay and Gupta, Vinay and Aswal, D. K. and Ikeda, H. and Hayakawa, Y. (2017) Synergetic effect of CuS@ZnS nanostructures on photocatalytic degradation of organic pollutant under visible light irradiation. RSC Advances , 7 (55). pp. 34366-34375. ISSN 2046-2069

PDF - Published Version
Download (2013Kb) | Preview


Ultrafast visible light active CuS/ZnS nanostructured photocatalysts were synthesized by a hydrothermal method. The effect of the CuS concentration on the morphological, structural and optical properties of ZnS nanostructures were investigated. X-ray diffraction analysis indicated the formation of CuS/ZnS phases with good crystallinity. The presence of ZnS on CuS was confirmed by X-ray photoelectron spectroscopy, elemental mapping, scanning electron microscopy and high resolution transmission electron microscopy analyses. CuS/ZnS nanocomposites efficiently decomposed methylene blue (MB) upon irradiation with visible light. The degradation time was 3 times faster than that of bare ZnS and CuS. The scavenger analysis results revealed that photogenerated superoxide (O-2 (center dot)) radicals were the main reactive species for the degradation of MB. The maximum degradation efficiency of 95.51% was observed within 5 min for samples of 0.050 M CuS/ZnS composites. The obtained results suggested that the enhanced photocatalytic activity was due to the formation of CuS/ZnS heterojunctions which led to the efficient separation of the photoinduced carriers.

Item Type: Article
Subjects: Chemistry
Depositing User: Users 27 not found.
Date Deposited: 29 Apr 2019 07:43
Last Modified: 29 Apr 2019 07:43
URI: http://npl.csircentral.net/id/eprint/2898

Actions (login required)

View Item View Item