Simultaneous determination of hydroquinone and catechol using an electrode modified by a composite of graphene/lanthanum hydroxide nanowires

Guo, Zhuo; Yin, Lu; Li, Jian; Xu, Xingou; Huang, Guoqing; Wang, Zeyu

doi:10.1039/c4ay01385a

Cited by 13 publications

(3 citation statements)

References 59 publications

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“…However, the simultaneous determination of HQ, CC and RC is quite challenging on unmodified carbon electrodes such as glassy and screen-printed carbon due to their poor selectivity and electrode fouling [11]. Hence, the chemically modified electrodes have been widely used for simultaneous determination of HQ, CC and RC owing to their high conductivity, high stability and wide potential window [12].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of a novel hybrid hydrogel composite of chitin stabilized graphite: Application for selective and simultaneous electrochemical detection of dihydroxybenzene isomers in water

Palanisamy

Kokulnathan

Velusamy

et al. 2017

Journal of Electroanalytical Chemistry

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The development of new and robust sensors for real-time monitoring of environmental pollutants have received much attention. Therefore, in the present work, we have fabricated a simple and robust electrochemical sensor for the simultaneous electrochemical determination of dihydroxybenzene isomers using chitin (CHI) stabilized graphite (GR) hydrogel composite modified electrode. The GR-CHI hydrogel composite was prepared by a simple sonication of raw GR in CHI solution and the as-prepared materials were characterized by range of physicochemical methods. Compared with CHI and GR modified electrodes, the GR-CHI hydrogel composite modified electrode shows an excellent electron transfer ability and enhanced electrocatalytic activity towards hydroquinone (HQ), catechol (CC) and resorcinol (RC). Differential pulse voltammetry was used for the simultaneous determination of HQ, CC and RC. Under optimized conditions, the fabricated electrode detects the HQ, CC and RC in the linear response from 0.2 to 110.6 µM, 0.3 to 110.6 µM and 1.3 to 133.4 µM, respectively. The detection limit for HQ, CC and RC were 0.065 µM, 0.085 µM and 0.35 µM, respectively. The sensor shows its appropriate practicality towards the determination of HQ, CC and RC in different water samples.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of a novel hybrid hydrogel composite of chitin stabilized graphite: Application for selective and simultaneous electrochemical detection of dihydroxybenzene isomers in water

Palanisamy

Kokulnathan

Velusamy

et al. 2017

Journal of Electroanalytical Chemistry

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“…Recent years, different nano and micro material modified electrodes have been employed for the reliable detection of CC, and they can also offer better selectivity, lower oxidation potential with improved sensitivity [11][12][13][14][15]. For instance, carbon nanomaterials and metal nanoparticles are widely used for selective detection of CC due to their unique physical and chemical properties [3,[11][12][13][14][15][16][17]. Among them, metal nanoparticles are found considerable interest in the modified electrodes owing to the large active sites and high conductivity [18].…”

Section: Introductionmentioning

confidence: 99%

One pot electrochemical synthesis of poly(melamine) entrapped gold nanoparticles composite for sensitive and low level detection of catechol

Palanisamy

Ramaraj

Chiu

et al. 2017

Journal of Colloid and Interface Science

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A simple and cost effective synthesis of nanomaterials with advanced physical and chemical properties have received much attention to the researchers, and is of interest to the researchers from different disciplines. In the present work, we report a simple and one pot electrochemical synthesis of poly(melamine) entrapped gold nanoparticles (PM-AuNPs) composite. The PM-AuNPs composite was prepared by a single step electrochemical method, wherein the AuNPs and PM were simultaneously fabricated on the electrode surface. The as-prepared materials were characterized by various physicochemical methods. The PM-AuNPs composite modified electrode was used as an electrocatalyst for oxidation of catechol (CC) due to its well-defined redox behavior and enhanced electro-oxidation ability towards CC than other modified electrodes. Under optimized conditions, the differential pulse voltammetry (DPV) was used for the determination of CC. The DPV response of CC was linear over the concentration ranging from 0.5 to 175.5μM with a detection limit of 0.011μM. The PM-AuNPs composite modified electrode exhibits the high selectivity in the presence of range of potentially interfering compounds including dihydroxybenzene isomers. The sensor shows excellent practicality in CC containing water samples, which reveals the potential ability of PM-AuNPs composite modified electrode towards the determination of CC in real samples.

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“…HQ and CC generally coexist in environment since they have similar structure and property. Several methods such as spectrophotometry [3], chromatography [4], fluorescence [5] and various electrochemical methods [6][7][8] have been preferred to detect HQ and CC simultaneously. Among them, electrochemical techniques have several advantages such as fast response, high selectivity, sensitivity and low cost.…”

Section: Introductionmentioning

confidence: 99%

Gold nanoparticle and poly(arginine) modified GCE for simultaneous determination of hydroquinone and catechol

Tığ¹

2017

HJBC

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B u çalışmada, hidrokinon (HQ) ve katekolün (CC) tayini için altın nanopartikül (AuNP) ve poli(L-arjinin) (P(AG)) modifiye edilmiş camsı karbon elektrot (GCE) (P(AG)/AuNP/GCE) temelli yeni bir elektrokimyasal sensör tasarlandı. Taramalı elektron mikroskobu (SEM), dönüşümlü voltametri (DV) ve elektrokimyasal impedans spektroskopisi (EİS) P(AG)/AuNP/GCE'yi karakterize etmek için kullanıldı. Diferansiyel puls voltametrisi sonuçları modifiye elektrodun hidrokinon ve katekolün eş zamanlı tayini için yüksek duyarlılık ve hassasiyet gösterdi. HQ ve CC'nin doğrusal çalışma aralığı 5.0 ile 600.0 µmol L -1 arasında ve gözlenebilme sınırları sırasıyla 1.5 ve 1.42 µmol L -1 olarak bulundu. Hazırlanan sensör hidrokinon ve katekolün gerçek örneklerde hızlı analizi için yüksek geri kazanımla düşük maliyetli uygun bir araç olarak önerildi. Hazırlanan sensör, yüksek geri kazanımlarla gerçek numunelerde HQ ve CC'nin hızlı analizi için düşük maliyetli uygun bir araçtır. Anahtar KelimelerHidrokinon, katekol, eş zamanlı, poly(arjinin), AuNP.

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Simultaneous determination of hydroquinone and catechol using an electrode modified by a composite of graphene/lanthanum hydroxide nanowires

Abstract: An electrochemical sensor modified by La(OH)3 nanorods and graphene hybrids for the simultaneous detection of hydroquinone and catechol.

Cited by 13 publications

References 59 publications

Preparation and characterization of a novel hybrid hydrogel composite of chitin stabilized graphite: Application for selective and simultaneous electrochemical detection of dihydroxybenzene isomers in water

Preparation and characterization of a novel hybrid hydrogel composite of chitin stabilized graphite: Application for selective and simultaneous electrochemical detection of dihydroxybenzene isomers in water

One pot electrochemical synthesis of poly(melamine) entrapped gold nanoparticles composite for sensitive and low level detection of catechol

Gold nanoparticle and poly(arginine) modified GCE for simultaneous determination of hydroquinone and catechol

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