Abstract
Nanoparticles of uncapped and PVA (poly vinyl alcohol) capped zinc oxide were synthesized by precipitation method. The synthesized ZnO nanoparticles were characterized by fourier transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy and thermogravimetric-differential thermal analysis. The photocatalytic activity of bare and modified ZnO nanoparticles was studied by monitoring the degradation of Rhodamine B. The results show that PVA capped ZnO nanoparticles has reduced photocatalytic activity than the bare ZnO nanoparticles. The reduction in the chemical oxygen demand and total organic carbon results also revealed the reduced photocatalytic activity of PVA capped ZnO. The UV-shielding property was evaluated by measuring the transmittance which shows that both bare and PVA capped ZnO nanoparticles possess good UV-shielding ability.
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Authors (MR, SS, RH) thank Defence Research & Development Organisation (DRDO), NewDelhi and University Grants Commission (UGC), NewDelhi for financial support.
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Sudha, M., Senthilkumar, S., Hariharan, R. et al. Controlled reduction of the deleterious effects of photocatalytic activity of ZnO nanoparticles by PVA capping. J Sol-Gel Sci Technol 61, 14–22 (2012). https://doi.org/10.1007/s10971-011-2584-7
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DOI: https://doi.org/10.1007/s10971-011-2584-7