, Volume 24, Issue 8, pp 2465–2472 | Cite as

Sensitive and selective electrochemical sensor of diuron against indole-3-acetic acid based on core-shell structured SiO2@Au particles

  • Junyong SunEmail author
  • Tian GanEmail author
  • Rui Zhai
  • Wanqiu Fu
  • Miaomiao Zhang
Original Paper


In the current study, a simple, recoverable, and stable sensor was developed based on SiO2 spheres functionalized with 6-nm Au nanoparticles (SiO2@AuNPs). Fabrication procedures and analytical application of this sensor toward quantitative determination of diuron in the presence of interfering compound indole-3-acetic acid were verified by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and differential pulse voltammetry (DPV) methods. It has been observed that diuron oxidation at the surface of sensor occurred at a potential of about 1.09 V which was 210 mV higher than that of indole-3-acetic acid, confirming that this newly prepared sensor appeared to be a good platform for the selective detection of diuron. Moreover, DPV demonstrated a linear relationship from 0.20 to 55 μmol/L and a detection limit of 51.9 nmol/L for diuron. Finally, this sensor was utilized for the determination of diuron in complex vegetable samples.


SiO2 spheres Ag nanoparticles Diuron Indole-3-acetic acid Electrochemical sensor 



This work was supported by the National Natural Science Foundation of China (grant number 61201091), the Program for Science & Technology Innovation Talents in University of Henan Province (grant number 16HASTIT004), the Key Scientific and Technological Project of Henan Province (grant number 162102210126), the Key Scientific Research Projects in University of Henan Province (grant number 18A150047), the Open Fund Research Project of Culinary Science Key Laboratory of Sichuan Province (grant number PRKX2017Z01), and the Nanhu Scholars Program for Young Scholars of XYNU.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2017

Authors and Affiliations

  1. 1.College of Chemistry and Chemical Engineering, Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountains & Henan Province Key Laboratory of Utilization of Non-metallic Mineral in the South of HenanXinyang Normal UniversityXinyangPeople’s Republic of China
  2. 2.Culinary Science Key Laboratory of Sichuan ProvinceSichuan Tourism UniversityChengduPeople’s Republic of China

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