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In relation to this article, we declare that there is no conflict of interest.
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Received June 4, 2014
Accepted February 25, 2015
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Efficient sorption and photocatalytic degradation of malachite green dye onto NiS nanoparticles prepared using novel green approach

Department of Environmental Studies, Faculty of Science, The M. S. University of Baroda, 390002, Vadodara, Gujarat, India 1Department of Environmental Sciences, Ashok & Rita Patel Institute of Integrated Study & Research in Biotechnology and Allied Sciences (ARIBAS), New Vallabh Vidyanagar, Anand, Gujarat, 388121, India 2Nano and Computational Materials Lab, Catalysis Division, National Chemical Laboratory, Council of Scientific and Industrial Research, Pune - 411008, India
suranjit@gmail.com
Korean Journal of Chemical Engineering, October 2015, 32(10), 1986-1992(7), 10.1007/s11814-015-0041-y
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Abstract

The extract of the Asparagus racemosus leaf tissue works as a stabilizing and capping agent and assists the formation of stable colloidal nanoparticles. Nanoparticles were characterized using UV-vis spectrophotometer, photoluminescence, TEM, EDAX and XRD, respectively. Transmission electron microscopy followed by selected area electron diffraction pattern analysis indicated the formation of near spherical, polydispersed, crystalline NiS of diameter ranging from 4-27 nm. X-ray diffraction studies showed the formation of 110, 101, 300, 021, 220, 221, 131, 410, 401, 321, 330 and 021 planes of hexagonal NiS. EDAX analysis confirmed the presence of Ni and S in nanosphere. The maximum sorption capacity (qm) of NiS nanoparticles for MG dye was found to be 64.85mg/g. Decolorization as well as disintegration of malachite green under white light illumination was confirmed by LC-MS studies. Results of the present study suggest that nanosized NiS can play an instrumental role in photocatalytic degradation of malachite green dye present in water bodies.

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