Amperometric sensors for detection of phenol in oilfield wastewater using electrochemical polymerization of zincon film

Qin, Wenlong; Li, Xuan; Chen, Hua-Peng; Yang, Jiang

doi:10.1039/c3ay41855c

Cited by 31 publications

(16 citation statements)

References 35 publications

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“…In the range of 0.225–1.125 mmol l −1 , the linear equation was I P (μA) = 2.37 C (mmol l −1 ) + 3.26 ( R = 0.998). The detection limit was 0.9 μmol l −1 (signal‐to‐noise, S/N = 3), showing a lower detection limits for phenol for the new material in comparison with other approaches including non‐electrochemical ones in Table 1 [29–33]. Fig.…”

Section: Resultsmentioning

confidence: 92%

Synthesis of columnar‐shaped CeO ₂ and electrochemical sensor for detecting phenol

Xiao

Wang

Zhang

et al. 2018

Micro & Nano Letters

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Highly uniform columnar-shaped CeO 2 was successfully prepared in large quantities by calcining a precursor, which was prepared by a simple hydrothermal method. The structure and morphology of the precursor and the columnar CeO 2 were characterised by X-ray diffraction and scanning electron microscopy. The columnar CeO 2 was fixed on a glassy carbon electrode to obtain a columnar CeO 2 sensor for detection of phenol. The anodic peak current was proportional to the phenol concentration in the range of 0.005-0.225 mmol l −1 (R = 0.995) and 0.225-1.125 mmol l −1 (R = 0.998) with the detection limit of 0.9 μmol l −1. This electrochemical method has the advantages of simplicity and ease of fabrication, rapid detection, low cost of the apparatus and wide dynamic ranges.

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Section: Resultsmentioning

confidence: 92%

Synthesis of columnar‐shaped CeO ₂ and electrochemical sensor for detecting phenol

Xiao

Wang

Zhang

et al. 2018

Micro & Nano Letters

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“…Table 2 listed the detection performance toward phenol of other reported electrocatalysts, among which most were enzymatic sensors. Compared with them, the detection limit of Ni/a-MWCNT was lower than poly(zincon) electrode, 49 although higher than other electrocatalysts. In addition, Ni/a-MWCNT exhibited lower cost and higher sensitivity than nanoporous gold thin¯lm 22 and PtNPsj/polytyramine matrix/graphite electrode.…”

Section: Electrochemical Detection Of Phenol On Ni/a-mwcnt Modi¯ed Gcmentioning

confidence: 87%

Ni Nanoparticle Anchored on MWCNT as a Novel Electrochemical Sensor for Detection of Phenol

Wang

et al. 2018

NANO

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Increasing active sites and enhancing electric conductivity are critical factors to improve sensing performance toward phenol. Herein, Ni nanoparticle was successfully anchored on acidified multi-walled carbon nanotube (a-MWCNT) surface by electroless plating technique to avoid Ni nanoparticle agglomeration and guarantee high conductivity. The crystal structure, phase composition and surface morphology were characterized by XRD, SEM and TEM measurement. The as-prepared Ni/a-MWCNT nanohybrid was immobilized onto glassy carbon electrode (GCE) surface for constructing phenol sensor. The phenol sensing performance indicated that Ni/a-MWCNT/GCE exhibited an amazing detection performance with rapid response time of 4[Formula: see text]s, a relatively wide detection range from 0.01[Formula: see text]mM to 0.48[Formula: see text]mM, a detection limit of 7.07[Formula: see text][Formula: see text]M and high sensitivity of 566.2[Formula: see text][Formula: see text]A[Formula: see text]mM[Formula: see text][Formula: see text]cm[Formula: see text]. The superior selectivity, reproducibility, stability and applicability in real sample of Ni/a-MWCNT/GCE endowed it with potential application in discharged wastewater.

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“…The electrode was washed with water and dried at room temperature. For electrochemical polymerization of zincon, the GCE was scanned between −1.00 V and 2.20 V (scan rate of 70 mV s −1 ) for ten cyclic times in 0.1 mol L −1 phoshate solution containing 0.1 mmol L −1 zincon . Next, the electrode was washed with water and treated between −0.40 and −0.90 V in 0.1 mol L −1 PBS (pH 7.0) until a stable voltammogram was obtained.…”

Section: Methodsmentioning

confidence: 99%

“…Zincon (2-carboxy-2'-hydroxy-5'-sulfoformazylbenzene) is a ligand that used for selective and quick extraction of metal ions such as lead and chromium [9]. Recently, zincon was used for constructing the electrochemical sensor for determination of trace level of phenol in wastewater [10].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified‐glassy Carbon Electrode

2017

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In this paper, a glassy carbon electrode (GCE) was modified with polyzincon. The modified electrode was used as a simple, inexpensive and highly sensitive electrochemical sensor for the determination of organophosphorus pesticide fenitrothion. To fabricate the electrochemical sensor, GCE was immersed in 0.10 mmol L−1 zincon solutions at pH 7.0 and then successively scanned between −1.00 to 2.20 V (vs. Ag/AgCl) at a scan rate of 70 mV s−1 for six cycles. The morphology and structure of the polyzincon were studied with atomic force microscopy and scanning electron microscopy. A comparison of the electrochemical behavior of fenitrothion on the unmodified and polyzincon modified‐GCE showed that in the modified electrode not only the oxidation peak current increased, but also the overpotential shifted to lower one. The experimental conditions such as sample solution pH, accumulation potential, and time were optimized. The differential pulse voltammetric responses of fenitrothion at potential about −0.60 V was used for the determination of fenitrothion. The peak current increased with increasing the concentration of fenitrothion in the range of 5 to 8600 nmol L−1 with a detection limit of 1.5 nmol L−1. Finally, the electrochemical sensor was used for the analysis of fenitrothion in water and fruit samples.

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Amperometric sensors for detection of phenol in oilfield wastewater using electrochemical polymerization of zincon film

Abstract: An amperometric sensor for phenol was fabricated based on electrochemical polymerization of zincon onto a carbon paste electrode surface.

Cited by 31 publications

References 35 publications

Synthesis of columnar‐shaped CeO ₂ and electrochemical sensor for detecting phenol

Synthesis of columnar‐shaped CeO ₂ and electrochemical sensor for detecting phenol

Ni Nanoparticle Anchored on MWCNT as a Novel Electrochemical Sensor for Detection of Phenol

Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified‐glassy Carbon Electrode

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Amperometric sensors for detection of phenol in oilfield wastewater using electrochemical polymerization of zincon film

Abstract: An amperometric sensor for phenol was fabricated based on electrochemical polymerization of zincon onto a carbon paste electrode surface.

Cited by 31 publications

References 35 publications

Synthesis of columnar‐shaped CeO 2 and electrochemical sensor for detecting phenol

Synthesis of columnar‐shaped CeO 2 and electrochemical sensor for detecting phenol

Ni Nanoparticle Anchored on MWCNT as a Novel Electrochemical Sensor for Detection of Phenol

Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified‐glassy Carbon Electrode

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Synthesis of columnar‐shaped CeO ₂ and electrochemical sensor for detecting phenol

Synthesis of columnar‐shaped CeO ₂ and electrochemical sensor for detecting phenol