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| A Sensitive Electrochemiluminescence Diuron Sensor Based on a 3D Graphene/Ru(bpy)2+3-doped Silica Nanocomposite Modified Electrode |
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| DOI： |
| KeyWord:electrochemiluminescence diuron 3D grapheme Ru(bpy)2+3-doped silica nanoparticle modified electrode |
| Author | Institution |
| ZHANG Hui，TAN Xue-cai*，YAN Jun，LIU Min，LI Xiao-yu，CHEN Xiao，FENG De-fen，CEN Jian-mei，CHEN Quan-you，WEI Yao-mi |
广西民族大学化学化工学院，广西高校食品安全与药物分析化学重点实验室，广西林产化学与工程重点实验室 |
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| Abstract: |
| Based on the enhancement of ECL intensity of Ｒu(bpy)2+3 in the presence of diuron，a new ECL method was established for the determination of diuron at the glassy carbon electrode modified with Nafion film of 3D graphene and SiO2@Ru.The 3D graphene which has the ability to enhance the intensity of electrochemiluminescence(ECL) was synthesized by a one-pot hydrothermal method.In addition，Ｒu(bpy)2+3-doped silica nanoparticle was prepared by water-in-oil microemulsion method to increase the ECL intensity.Under the optimum conditions，the ECL intensity was well proportional to the logarithmic of diuron concentration in the range of 9.08×10-11-9.08×10-7 mol/L with a detection limit as low as 1.18×10-12 mol/L.The RSD for 2.00×10-8 mol/L diuron(n=10) was 4.2%,which indicated that this method had a good repeatability.The method was applied in the determination of diuron in vegetable samples with recoveries of 99.3%-110.8%. |
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