Photocatalytic and antimicrobial activity of NiWO4 nanoparticles stabilized by the plant extract |
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| Affiliation: | 1. P.G. & Research Department of Chemistry, C.P.A. College, Bodinayakanur 625513, Tamilnadu, India;2. P.G. & Research Department of Chemistry, Thiagarajar College, Madurai 625009, Tamilnadu, India;1. P.G. and Research Department of Chemistry, C.P.A. College, Bodinayakanur 625 513, India;2. Directorate of Distance Education, Madurai Kamaraj University, Madurai 625 021, India;3. Mother Teresa Women’s University, Kodaikanal 624 102, India;4. P.G. and Research Department of Chemistry, Thiagarajar College, Madurai, India;1. School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea;2. Electronic Materials and Device Research Center, Korea Electronics Technology Institute, Seongnam 13509, Republic of Korea;3. SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, Republic of Korea;1. Instituto Tecnológico de Saltillo, Blvd. V. Carranza No. 2400, Col. Tecnológico Saltillo, C. P. 25280, Coahuila, Mexico;2. CINVESTAV del IPN, Unidad Saltillo, C.P. 25900, Ramos Arizpe, Coahuila, Mexico;3. Centro de Investigación en Materiales Avanzados S. C., Miguel de Cervantes 120, C. P. 31136, Chihuahua, Chih., Mexico;1. Department of Physics, University of Kashan, Kashan, Iran;2. Young Researchers and Elites Club, Arak Branch, Islamic Azad University, Arak, Iran;3. Institute of Nano Science and Nano Technology, University of Kashan, P. O. Box 87317-51167, Kashan, IR, Iran;4. Department of Chemistry, Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, Iran;5. Department of Medicinal Chemistry, School of Pharmacy-International Campus, Iran University of Medical Sciences, Tehran, Iran;1. Programa de Pós-Graduação em Ciência dos Materiais-PPCM, Universidade Federal do Piauí, 64049-550, Teresina–PI, Brazil;2. PPGQ-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150, Teresina–PI, Brazil;3. CDMF-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos–SP, Brazil;4. Department of Chemical and Biochemical Engineering, Dongguk University, Seoul, 04620, South Korea |
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| Abstract: | In recent years, biosynthesis of nanoparticles using plant extract has attracted great attention owing to its cost effective, non-toxic, eco-friendly and as an alternative approach to physical and chemical methods. Nickel tungstate (NiWO4) nanoparticles were synthesised via the aqueous leaf extract of Azadirachta indica plant. The prepared nanoparticles were characterized using UV–visible diffuse reflectance spectroscopy (UV–vis-DRS), fourier transform infra-red spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and transmission electron microscopy (TEM) techniques. SEM results showed that plant extract modified NiWO4 (PNT) was composed of tiny sphere in shape. XRD results revealed that the average crystallite size of PNT was smaller (12.12 nm) when compared to the bare NiWO4 (NT) prepared using precipitation method (31.11 nm). The photocatalytic activity of NiWO4 nanoparticles were investigated using methylene blue (MB) as a model organic pollutant under visible light irradiation. PNT showed high efficiency for the degradation of MB compared to NT. The effect of operation parameters such as initial dye concentration, pH and catalyst concentration has been investigated in detail. PNT was subjected to antimicrobial studies and significant results were obtained. |
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| Keywords: | PNT NT Azadirachta indica Photocatalysis Methylene blue Antimicrobial studies |
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