Simultaneous determination of hydroquinone and catechol at PASA/MWNTs composite film modified glassy carbon electrode

Zhao, Dongming; Zhang, Xun; Li, Feng; Li, Jia; Wang, Shengfu

doi:10.1016/j.colsurfb.2009.07.044

Cited by 209 publications

(104 citation statements)

References 23 publications

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“…24 Low pH values showed much more positive potentials that would cause interference but high values of pH formed a broad hump. Moreover, the peak current of both the HQ and CA reached maximum values at approximately pH 7.4 (data not shown) and then decreased with increasing pH.…”

Section: Resultsmentioning

confidence: 99%

The Modified Electrode by PEDOP with MWCNTs-Palladium Nanoparticles for the Determination of hydroquinone and Catechol

Kim¹,

Jeon²

2011

Bulletin of the Korean Chemical Society

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Poly-ethylenedioxypyrrole (PEDOP) coated thiolated multiwall carbon nanotubes palladium nanoparticles (MWCNTs-Pd) modified glassy carbon electrode (GCE) [PEDOP/MWCNTs-Pd/GCE] for the determination of hydroquinone (HQ) and it's isomer catechol (CA) were synthesized and compared with bare GCE and thiolated multiwall carbon nanotubes (MWCNTs-SH/GCE). The modification could be made by simple processes on a GCE with MWCNTs-Pd covered by PEDOP in a 0.05 M tetrabutylammonium perchlorate (TBAP)/MeCN solution system. A well-defined peak potential evaluation of the oxidation of hydroquinone to quinone at 0.05 V (vs. Ag/AgCl), and electrochemical reduction back to hydroquinone were found by cyclic voltammetry (CV) in phosphate buffered saline (PBS) at pH 7.4. Peak current values increased linearly with increasing hydroquinone contents. The peak separation between the anodic and cathodic peaks at the PEDOP/ MWCNTs-Pd/GCE was ΔEp = 40 mV for HQ and ΔEp = 70 mV for CA, resulting in a higher electron transfer rate. Moreover, good reproducibility, excellent storage stability, a wide linear range (0.1 µM -5 mM for HQ and 0.01 µM -6 mM for CA), and low detection limits (2.9 × 10 −8 M for HQ and 2.6 × 10 −8 M for CA; S/N = 3) were determined using differential pulse voltammetry (DPV) and amperometric responses; this makes it a promising candidate as a sensor for determination of HQ and CA.Key Words : Hydroquinone, Catechol, Electrochemical sensor, Carbon nanotubes, MWCNTs-palladium nanoparticles IntroductionSince its introduction for clinical use in 1961, hydroquinone (HQ; 1,4-dihydroxybenzene) has been a popular depigmenting agent, inhibiting melanin formation.1,2 Accordingly, it has been used not only in cosmetic creams and tanning but also pesticides, flavoring agents, medicines, photography chemicals, organic constituent of tobacco smoke, and widely distributed throughout nature.3-6 Nevertheless, HQ and its isomers, catechol (CA; 1,2-dihydroxybenzene) and resorcinol (RE; 1,3-dihydroxybenzene), are harmful to both humans and animals, even at low concentrations, and they are difficult to degrade due to their coexistence and interference during determination.7-10 Moreover, they are considered to be environmental pollutants by the United States Environmental Protection Agency (EPA) and the European Union (EU) and banned its use in cosmetics and such formulations.11 But some researchers have acknowledged that these dihydroxybenzenes not only affect activities of some enzymes, but also have biological importances such as antioxidation and antivirus characterestics, thus are environmentally significant as antioxidants and antiviral agents.12 Therefore, various methods for their determination have been carried out by spectrophotometric and chromatographic techniques.13-15 Unfortunately they possess high cost and low sensitivity, require complicated pretreatments, and consume much time. So, it's demanding to develop simple, rapid, and electrochemical methods with low cost, high sensitivity, and ease of operation. 16,17 From previous re...

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Section: Resultsmentioning

confidence: 99%

The Modified Electrode by PEDOP with MWCNTs-Palladium Nanoparticles for the Determination of hydroquinone and Catechol

Kim¹,

Jeon²

2011

Bulletin of the Korean Chemical Society

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“…The diameter of the depressed semicircle is equivalent to the charge transfer resistance (R ct ), which is a sensitive and directive factor indicating the changes at the electrode-solution interfaces. 26 Before the ion exchange with ClO 4 2 , PANOA-TSA 2 has the largest R ct . After the dedoping/redoping process is conducted in 0.3M HClO 4 for 10 cycles, R ct is greatly decreased; and a further decrease in R ct is observed after the ion exchange is extended to 50 cycles.…”

Section: Eis Characterizationmentioning

confidence: 99%

Electrically controllable perchlorate removal based on poly(aniline‐co‐o‐aminophenol) doped with p‐toluene sulfonate

Dai

Liu

et al. 2015

J of Applied Polymer Sci

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Poly(aniline-co-o-aminophenol) (PANOA) was synthesized via electrochemical copolymerization of o-aminophenol and aniline using p-toluene sulfonate (TSA 2 ) as the counterion. The redox transformation of PANOA is accompanied by the exchange of anions into and out of the copolymer, and the feasibility of perchlorate (ClO 4 2 ) removal via an electrically switched ion exchange process was evaluated in this study. The results of electrochemical quartz crystal microbalance (EQCM), electrochemical impedance spectroscopy (EIS), and Fourier transform infrared spectroscopy (FTIR) demonstrated the successful release of TSA 2 upon reduction and uptake of ClO 4 2 upon reoxidation of the copolymer. Also, in this work, the possible ion-exchange mechanism of PANOA wasproposed.

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“…Many materials have been used to overcome these problems, such as polymer film, 28 carbon materials 29,30 and enzyme. 31 Among these materials, carbon materials have attracted researchers' attention because of their low cost and good electrocatalytic properties. 20,26,29,32 On the other hand, many kinds of nitrogen (N)-doped carbon materials, such as N-doped graphene, [33][34][35] N-doped carbon nanotubes (CNTs), 36 and N-doped hollow carbon microsphere, 37 were reported and showed high sensitivity in biosensing applications and excellent electrocatalytic activity toward oxygen reduction reaction.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Electrochemical Determination of Hydroquinone, Catechol and Resorcinol at Nitrogen Doped Porous Carbon Nanopolyhedrons-multiwall Carbon Nanotubes Hybrid Materials Modified Glassy Carbon Electrode

Liu¹,

Wu²,

Zhang³

et al. 2014

Bulletin of the Korean Chemical Society

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The nitrogen doped porous carbon nanopolyhedrons (N-PCNPs)-multi-walled carbon nanotubes (MWCNTs) hybrid materials were prepared for the first time. Combining the excellent catalytic activities, good electrical conductivities and high surface areas of N-PCNPs and MWCNTs, the simultaneous determination of hydroquinone (HQ), catechol (CC) and resorcinol (RE) with good analytical performance was achieved at the NPCNPs-MWCNTs modified electrode. The linear response ranges for HQ, CC and RE are 0.2-455 M, 0.7-440 M and 3.0-365 M, respectively, and the detection limits (S/N = 3) are 0.03 M, 0.11 M and 0.38 M, respectively. These results are much better than that obtained on some graphene or CNTs-based materials modified electrodes. Furthermore, the developed sensor was successfully applied to simultaneously detect HQ, CC and RE in the local river water samples.

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Simultaneous determination of hydroquinone and catechol at PASA/MWNTs composite film modified glassy carbon electrode

Cited by 209 publications

References 23 publications

The Modified Electrode by PEDOP with MWCNTs-Palladium Nanoparticles for the Determination of hydroquinone and Catechol

The Modified Electrode by PEDOP with MWCNTs-Palladium Nanoparticles for the Determination of hydroquinone and Catechol

Electrically controllable perchlorate removal based on poly(aniline‐co‐o‐aminophenol) doped with p‐toluene sulfonate

Simultaneous Electrochemical Determination of Hydroquinone, Catechol and Resorcinol at Nitrogen Doped Porous Carbon Nanopolyhedrons-multiwall Carbon Nanotubes Hybrid Materials Modified Glassy Carbon Electrode

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