首页|Silicon quantum dots-based fluorescent sensor for the detection of cobalt with high sensitivity and selectivity
Silicon quantum dots-based fluorescent sensor for the detection of cobalt with high sensitivity and selectivity
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维普
Fluorescent silicon quantum dots(Si QDs)were hydrothermally synthesized from a mixture of 3(2-aminoethylamino)propyl(dimethoxymethylsilane)(AEAPDMMS)and poly(vinylpyrrolidine)(PVP).The resulting Si QDs exhibited good water solubility and high stability.Under the optimized conditions,the probe revealed an excellent linear fluorescence quenching effect on Co2+ranging from 1 μmol/L to 120μmol/L with a limit of detection of 0.37 μmol/L(based on 3s/k).The quenching mechanism was stud-ied,showing that static quenching(SQE)causes the main effect.Furthermore,the test paper based on Si QDs was prepared,which is cost-effective,high sensitivity,good selectivity,easy to use and show excel-lent anti-interference capability.This method was applied to analyze the content of Co2+in environmen-tal water samples with satisfying results.
NETL
NSTL
万方数据
维普
