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- W2914494191 abstract "Abstract ZnS nanocrystals with different capping agents viz. polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP) and cetyltrimethylammonium bromide (CTAB) were synthesized by the chemical co-precipitation method. The materials were characterized by using various methods such as X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy, Fourier transform infrared spectroscopy, surface area analyzer, UV–visible absorption spectroscopy and photoluminescence (PL) spectroscopy. Williamson-Hall analyses of the X-ray diffraction patterns were carried out that showed the average crystallite sizes to be 2.6 nm, 2.7 nm and 2.6 nm for the PVA, PVP and CTAB capped ZnS nanocrystals, respectively. The PL studies revealed the presence of various defects such as zinc vacancy, sulphur vacancy, zinc interstitial and sulphur interstitial. The PVA, PVP and CTAB capped ZnS nanocrystals degraded methylene blue under simulated sunlight irradiation by 43%, 89% and 92%, respectively after 150 min of light irradiation. The results showed the presence of correlation between the PL properties and photocatalytic performances of the nanocrystals. Further, the observed higher specific surface areas of the PVP and CTAB capped ZnS nanocrystals compared to those capped by PVA have possibly resulted in their superior photocatalytic properties." @default.
- W2914494191 created "2019-02-21" @default.
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- W2914494191 date "2019-06-01" @default.
- W2914494191 modified "2023-09-27" @default.
- W2914494191 title "Influence of capping agent on structural, optical and photocatalytic properties of ZnS nanocrystals" @default.
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- W2914494191 doi "https://doi.org/10.1016/j.jlumin.2019.02.033" @default.
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