Sensitive electrochemical detection of hydroquinone with carbon ionogel electrode based on BMIMPF6

Sun, Xiaoying; Hu, Song; Li, Linfang; Xiang, Jun; Sun, Wei

doi:10.1016/j.jelechem.2010.10.019

Cited by 28 publications

(13 citation statements)

References 44 publications

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“…The analytical methods for phenol and dihydric phenols include ultravioletvisible (UV) spectrophotometry [7], thin-layer chromatography (TLC) [8], and fluorescence [9][10][11][12], while the most frequently used methods are gas chromatography (GC) [13][14][15][16], high-performance liquid chromatography (HPLC) [17][18][19][20], and electrochemical methods [21][22][23][24]. The UV spectra of phenol, catechol, and hydroquinone overlap with one another when using spectrophotometry, so software analysis such as the successive approximation method [25], multi-wavelength linear Fig.…”

Section: Introductionmentioning

confidence: 99%

Determination of catalytic oxidation products of phenol by RP-HPLC

et al. 2011

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A reversed-phase high-performance liquid chromatography (RP-HPLC) with ultraviolet detection was established for the determination of phenol, catechol, hydroquinone, and p-benzoquinone in the reaction solution of catalytic oxidation of phenol using hydrogen peroxide as the oxidant and copper-doped FeSBA-15 zeolite as the catalyst. Separation was accomplished on a reversed-phase C 18 column, and the elution condition was optimized by changing the composition of the mobile phase. A good resolution of all of the relative components in the reaction solution was achieved when the mobile phase was methanol-water-1% acetic acid aqueous solution = 10:50:40 (v/v/v). The concentrations of phenol, catechol, hydroquinone, and p-benzoquinone were determined in 11 different reaction solutions by the external standard method. The proposed HPLC method was simple, accurate, reliable, and suitable for tracing the amount of target products during the catalytic oxidation reaction of phenol. The results can provide data support for evaluating the

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Section: Introductionmentioning

confidence: 99%

Determination of catalytic oxidation products of phenol by RP-HPLC

et al. 2011

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“…2 further confirms that the AuNPs are successfully anchored on GCE surface. Three peaks appearing at 44.91º, 62.44º, 77.03º are assigned to the (200), (220), (311) faces respectively, indicating the formation of the crystalline Au [25]. Meanwhile, the peaks near to 30º and 52º are corresponding to the substrate.…”

Section: Sem and Xrd Characterizationmentioning

confidence: 99%

“…Recently, much effort has been paid to develop the versatile electrodes to determine HQ. Typical examples are the modified electrodes, and the materials to decorate the surface adopt electrospun carbon nanofibers [19], L-cysteine oxide/gold [20], poly (thionine) [21], carbon nanotube-ionic liquid composite [22], Pt-MnO 2 composite particle [23], graphitic mesoporous carbon [24], 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF 6 ) [25], copper hexacyanoferrate and platinum film [26]. Gold nanoparticles (AuNPs), due to its large surface area, high conductivity and electrocatalytic capability, have been employed to increase the detection limit in electrochemical analysis [27].…”

Section: Introduction *mentioning

confidence: 99%

Methionine – Au Nanoparticle Modified Glassy Carbon Electrode: a Novel Platform for Electrochemical Detection of Hydroquinone

Zhong-rong

Zhang

et al. 2014

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A high sensitive electrochemical sensor based on methionine/gold nanoparticles (MET/AuNPs) modified glassy carbon electrode (GCE) was fabricated for the quantitative detection of hydroquinone (HQ). The as-modified electrode was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. The electrochemical performance of the sensor to HQ was investigated by using cyclic and differential pulse voltammetry, which revealed its excellent electrocatalytic activity and reversibility towards HQ. The separation of anodic and cathodic peak (∆E p) was decreased from 471 mV to 75 mV. The anodic peak current achieved under the optimum conditions was linear with the HQ concentration ranging from 8 μM to 400 μM with the detection limit 0.12 μM (3σ). The as-fabricated sensor also showed a good selectivity towards HQ without demonstrating interference from other coexisting species. Furthermore, the sensor showed a good performance for HQ detection in environmental water, which suggests its potential practical application.

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“…Graphene has ideal and unique properties such as excellent conductivity, large surface area, good chemical stability, mechanical strength and high charge transport mobility [ 11 ]. Therefore, it has attracted interest significantly in several technological application fields including nanoelectronics, nanocomposite, biosensing and bioelectronics [ 12 ]. In a particular application, graphene requires chemical functionalization to meet the desired condition, which sometimes causes significant decreases in the electrical conductivity of the functionalized graphene [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Biosensor Based on Tyrosinase Immobilized on Graphene-Decorated Gold Nanoparticle/Chitosan for Phenolic Detection in Aqueous

Fartas

Abdullah

Yusof

et al. 2017

Sensors

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In this research work, electrochemical biosensor was fabricated based on immobilization of tyrosinase onto graphene-decorated gold nanoparticle/chitosan (Gr-Au-Chit/Tyr) nanocomposite-modified screen-printed carbon electrode (SPCE) for the detection of phenolic compounds. The nanocomposite film was constructed via solution casting method. The electrocatalytic activity of the proposed biosensor for phenol detection was studied using differential pulse voltammetry (DPV) and cyclic voltammetry (CV). Experimental parameters such as pH buffer, enzyme concentration, ratio of Gr-Au-Chit, accumulation time and potential were optimized. The biosensor shows linearity towards phenol in the concentration range from 0.05 to 15 μM with sensitivity of 0.624 μA/μM and the limit of detection (LOD) of 0.016 μM (S/N = 3). The proposed sensor also depicts good reproducibility, selectivity and stability for at least one month. The biosensor was compared with high-performance liquid chromatography (HPLC) method for the detection of phenol spiked in real water samples and the result is in good agreement and comparable.

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Sensitive electrochemical detection of hydroquinone with carbon ionogel electrode based on BMIMPF6

Cited by 28 publications

References 44 publications

Determination of catalytic oxidation products of phenol by RP-HPLC

Determination of catalytic oxidation products of phenol by RP-HPLC

Methionine – Au Nanoparticle Modified Glassy Carbon Electrode: a Novel Platform for Electrochemical Detection of Hydroquinone

Biosensor Based on Tyrosinase Immobilized on Graphene-Decorated Gold Nanoparticle/Chitosan for Phenolic Detection in Aqueous

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