Sensing Nanoparticulate ZnO with Benzimidazole Derivative by Fluorescence


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A sensitive benzimidazole derivative fluorescent sensor for nanoparticulate ZnO has been designed and synthesized. The nanocrystalline ZnO, Ag doped ZnO and Cu doped ZnO have been synthesised by sol-gel method and characterized by powder X-ray diffraction, scanning electron microscopy (SEM) and UV-visible diffuse reflectance, photoluminescence and electrochemical impedance spectroscopies. 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. Impurities such as Ag and Cu do not hamper the sensitivity of this technique significantly. Keywords: Sensor, SEM, EDX, Impedance, Fluorescence



Edited by:

Evangelos Hristoforou and Dr. Dimitros S. Vlachos




J. Jayaraman and J. Karunamoorthy, "Sensing Nanoparticulate ZnO with Benzimidazole Derivative by Fluorescence", Key Engineering Materials, Vol. 543, pp. 63-67, 2013

Online since:

March 2013




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