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Carbon dot doped silica nanoparticles as fluorescent probe for determination of bromate in drinking water samples

Xiang, Guoqiang ; Fan, Huanhuan ; Zhang, Heng ; He, Lijun ; Jiang, Xiuming ; Zhao, Wenjie

Canadian journal of chemistry, 2018, Vol.96 (1), p.24-29 [Periódico revisado por pares]

Ottawa: NRC Research Press

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Título:
Carbon dot doped silica nanoparticles as fluorescent probe for determination of bromate in drinking water samples
Autor: Xiang, Guoqiang ; Fan, Huanhuan ; Zhang, Heng ; He, Lijun ; Jiang, Xiuming ; Zhao, Wenjie
Assuntos: bromate ; Bromates ; Carbon ; Carbon dots ; Chemical properties ; Chemistry ; Citric acid ; Control ; Drinking water ; drinking water sample ; Fluorescence ; Fluorescent indicators ; Methods ; Nanoparticles ; nanoparticules de silice ; points quantiques de carbone ; Pyrolysis ; Quality control ; Sensors ; Silica ; silica nanoparticles ; Silicon dioxide ; Studies ; Water analysis ; Water quality ; Water sampling ; échantillon d’eau potable
É parte de: Canadian journal of chemistry, 2018, Vol.96 (1), p.24-29
Descrição: A simple and effective strategy for designing a fluorescent probe for bromate was described in this work. Organosilane modified carbon dots were prepared by pyrolysis of citric acid in N-(β-aminoethyl)-γ-aminopropyl methyldimethoxysilane solvent at 230 °C and further doped onto silica nanoparticles by a silylation reaction. The fluorescence of carbon dot doped silica nanoparticles was quenched by bromate in acidic medium. By utilizing this property, the nanoparticle could be used as a sensor to detect bromate. The parameters affecting the performance of the sensor probe such as types of acid medium, acid concentration, reaction temperature, and time were investigated and optimized. The detection limit of the sensor was found to be 1.1 ng mL −1 , with a linear range from 8 to 400 ng mL −1 and relative standard deviation of 2.0% (150 ng mL −1 , n = 9). The method was successfully applied to the determination of bromate in drinking water samples, and the recoveries were in the range of 96.3%–103.7%.
Editor: Ottawa: NRC Research Press
Idioma: Inglês

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Carbon dot doped silica nanoparticles as fluorescent probe for determination of bromate in drinking water samples

Xiang, Guoqiang ; Fan, Huanhuan ; Zhang, Heng ; He, Lijun ; Jiang, Xiuming ; Zhao, Wenjie

Ottawa: NRC Research Press

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