Microchimica Acta

, 186:819 | Cite as

A voltammetric sensor for simultaneous determination of hydroquinone and catechol by using a heterojunction prepared from gold nanoparticle and graphitic carbon nitride

  • Hua Guo
  • YanLing Shen
  • Huiying Ouyang
  • Yumei LongEmail author
  • Weifeng LiEmail author
Original Paper


An electrochemical sensor is described for the simultaneous determination of hydroquinone (HQ) and catechol (CC) based on a nanocomposite consisting of gold nanoparticles and graphitic carbon nitride (g-C3N4). The nanocomposite was synthesized via one-step thermal polymerization route and characterized by X-ray diffraction, transmission electron microscopy, and Fourier transform infrared techniques. The results confirmed the close contact between gold nanoparticles and g-C3N4. The nanocomposites exhibited the enhanced electrocatalytic redox towards HQ and CC. A glassy carbon electrode was modified with the nanocomposite to obtain a sensor that exhibited favorable analytical properties in the simultaneous detection of HQ and CC, with voltammetric peaks typically near −0.14 and − 0.02 V (vs. saturated calomel electrode). Linear responses are found between 1.0 and 320 μM for HQ (with a 0.3 μM detection limit; at S/N = 3), and between 0.1 and 320 μM for CC (with a 0.04 μM detection limit; at S/N = 3). The sensor was applied for the simultaneous determination of HQ and CC in spiked water samples, and acceptable recoveries were achieved. The superior sensing properties of the electrode are attributed to the synergy between the microstructure (heterojunction and porosity) and the π interactions between phenolic isomers and g-C3N4.

Graphical abstract

A novel electrochemical sensor is demonstrated for the simultaneous determination of hydroquinone and catechol based on a nanocomposite consisting of gold nanoparticles (AuNPs) and graphitic carbon nitride (g-C3N4).


Heterostructure Simultaneous determination Phenolic isomers Single-source precursor Electrochemistry Electrocatalysis 



This work is supported by the National Natural Science Foundation of China (21005053), the Priority Academic Program Development of Jiangsu Higher Education Institutions and the Project of Scientific and Technologic Infrastructure of Suzhou (SZS201708).

Compliance with ethical standards

Conflict of interest

The author(s) declare that they have no competing interests.

Supplementary material

604_2019_3798_MOESM1_ESM.doc (1.1 mb)
ESM 1 (DOC 1.12 mb)


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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  1. 1.College of Chemistry, Chemical engineering and Materials ScienceSoochow UniversitySuzhouPeople’s Republic of China
  2. 2.The Key Lab of Health Chemistry and Molecular Diagnosis of SuzhouSoochow UniversitySuzhouPeople’s Republic of China

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