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The Synthesis of Eu3+ Doped with TiO2 Nano-Powder and Application as a Pesticide Sensor
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 Title & Authors
The Synthesis of Eu3+ Doped with TiO2 Nano-Powder and Application as a Pesticide Sensor
Yao, Fei; Sun, Yang; Tan, Chunlei; Wei, Song; Zhang, Xiaojuan; Hu, Xiaoyun; Fan, Jun;
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 Abstract
Using tetrabutyl titanate as precursor, doped nano-powder was prepared by sol-gel method, the nature of luminescence of nano-powder was studied. The interaction of chlorpyrifos with doped was studied by absorption and fluorescence spectroscopy. The results indicated the fluorescence intensity of doped was quenched by chlorpyrifos and the quenching rate constant () was according to the Stern-Volmer equation. The dynamics of photoinduced electron transfer from chlorpyrifos to conduction band of nanoparticle was observed and the mechanism of electron transfer had been confirmed by the calculation of free energy change () by applying Rehm-Weller equation as well as energy level diagram. A new rapid method for detection of chlorpyrifos was established according to the fluorescence intensity of doped was proportional to chlorpyrifos concentration. The range of detection was and the election limit () was mol/L.
 Keywords
doped ;Sensor;Chlorpyrifos;Fluorescence;Analysis application;
 Language
English
 Cited by
1.
Preparation of Highly Visible-Light Photocatalytic Active N-Doped TiO2 Microcuboids,;;;;

대한화학회지, 2013. vol.57. 4, pp.489-492 crossref(new window)
1.
Preparation of Highly Visible-Light Photocatalytic Active N-Doped TiO2Microcuboids, Journal of the Korean Chemical Society, 2013, 57, 4, 489  crossref(new windwow)
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