کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
26799 | 43979 | 2012 | 8 صفحه PDF | دانلود رایگان |
A sensitive benzimidazole derivative fluorescent sensor for nanoparticulate ZnO has been designed and synthesized. The synthesized sensor emits fluorescence at 360 nm and this fluorescence is selectively enhanced by nanocrystalline ZnO. This technique is sensitive to detect and estimate ZnO at micro molar level. Doping ZnO with Cu does not hamper the sensitivity but Ag-doping significantly reduces the same. The nanocrystalline ZnO, Ag doped ZnO and Cu doped ZnO have been synthesized by sol–gel method and characterized by powder X-ray diffraction, scanning electron microscopy and UV–vis diffuse reflectance, photoluminescence and electrochemical impedance spectroscopies.
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► Synthesized sensor emits fluorescence at 360 nm.
► It is sensitive to detect and estimate ZnO at micro molar level.
► Doping ZnO with Cu does not hamper the sensitivity but Ag-doping significantly reduces the same.
► Benzimidazole derivative is adsorbed on the surface of semiconductor nanoparticle through azomethine nitrogen.
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 247, 1 November 2012, Pages 16–23