A three-electrode integrated electrochemical platform based on nanoporous gold for the simultaneous determination of hydroquinone and catechol with high selectivity

Wu, Fanggen; Zhao, Jie; Han, Dongxue; Zhao, Shifan; Zhu, Rui; Cui, Guofeng

doi:10.1039/d0an01746a

Cited by 26 publications

(13 citation statements)

References 64 publications

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“…Figure 6 shows the effects of the pH value on the electrochemical response of HQ, CC, and RS at the GCE/ErGO-cMWCNT/AuNPs. The potential of the oxidation peak E pa at the DHB isomers shifted negatively as the pH increased, demonstrating that the protons were directly involved in the redox process [ 40 ]. The regression equations for three DHB isomers are as follows: HQ: E pa (V) = −0.0578 pH + 0.5241 (R 2 = 0.9929), CC: E pa (V) = −0.0575 pH + 0.6295 (R 2 = 0.9917), and RS: E pa (V) = −0.0548pH + 0.999 (R 2 = 0.9934).…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Detection of Dihydroxybenzene Isomers Using Electrochemically Reduced Graphene Oxide-Carboxylated Carbon Nanotubes/Gold Nanoparticles Nanocomposite

2021

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An electrochemical sensor based on electrochemically reduced graphene oxide (ErGO), carboxylated carbon nanotubes (cMWCNT), and gold nanoparticles (AuNPs) (GCE/ErGO-cMWCNT/AuNPs) was developed for the simultaneous detection of dihidroxybenzen isomers (DHB) hydroquinone (HQ), catechol (CC), and resorcinol (RS) using differential pulse voltammetry (DPV). The fabrication and optimization of the system were evaluated with Raman Spectroscopy, SEM, cyclic voltammetry, and DPV. Under optimized conditions, the GCE/ErGO-cMWCNT/AuNPs sensor exhibited a linear concentration range of 1.2–170 μM for HQ and CC, and 2.4–400 μM for RS with a detection limit of 0.39 μM, 0.54 μM, and 0.61 μM, respectively. When evaluated in tap water and skin-lightening cream, DHB multianalyte detection showed an average recovery rate of 107.11% and 102.56%, respectively. The performance was attributed to the synergistic effects of the 3D network formed by the strong π–π stacking interaction between ErGO and cMWCNT, combined with the active catalytic sites of AuNPs. Additionally, the cMWCNT provided improved electrocatalytic properties associated with the carboxyl groups that facilitate the adsorption of the DHB and the greater amount of active edge planes. The proposed GCE/ErGO-cMWCNT/AuNPs sensor showed a great potential for the simultaneous, precise, and easy-to-handle detection of DHB in complex samples with high sensitivity.

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Section: Resultsmentioning

confidence: 99%

Simultaneous Detection of Dihydroxybenzene Isomers Using Electrochemically Reduced Graphene Oxide-Carboxylated Carbon Nanotubes/Gold Nanoparticles Nanocomposite

2021

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“…High‐surface‐area oxides support of nanoparticles, agglomeration, and the detachable nature of AuNPs reduces their catalytic activity [111] . To overcome this limitation, Wu and co‐workers [111] synthesized nanoporous gold (NPG) and used it as a working electrode in portable integrated devices for rapid monitoring of HQ and CT. The integration of NPG as a working electrode reduces the loss of catalyst, and the self‐supporting, continuous porous structure of NPG could promote the electrochemical reaction.…”

Section: Simultaneous Detection Of Hq and Ctmentioning

confidence: 99%

Electrochemical Sensing Platforms of Dihydroxybenzene: Part 2 – Nanomaterials Excluding Carbon Nanotubes and Graphene

Nayem

Shah

Sultana

et al. 2021

The Chemical Record

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The high surface‐to‐volume ratio and desirable chemical, thermal, and catalytic properties of nanomaterials have made them promising electrode materials for sensing applications. As such, different nanomaterials and their nanocomposite‐based individual and/or simultaneous detection of dihydroxybenzene (DHB) have been reported in recent years. Due to the low degradation rate and high toxicity of DHB isomers, the development of innovative and robust sensors for their simultaneous detection has received considerable attention. In this review, applications of different nanomaterials (with the exception of carbon nanotubes, graphene, and their derivatives) for individual and/or simultaneous detection of DHB are briefly discussed. The focal point is on the characteristic features of the modified electrodes that improve their electrocatalytic activities toward DHB. Real sample analysis and electrolyte media are also summarized. This review includes studies published from 2011 to 2020.

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“…The use of these dihydroxybenzene derivatives in food additives, synthetic dyes, plastics, and pharmaceuticals presents evident motivation for developing receptor systems capable of single isomer identification and recovery, which to date is limited to electrochemical, chromatographic, and spectrofluorometric strategies. − Herein, we report the selective formation of a P[5]Q-HQ quinhydrone complex characterized by 1 H NMR, UV–vis, FTIR, powder X-ray diffraction, SEM, Brunauer–Emmett–Teller (BET) surface area analysis, and cyclic voltammetry (CV), which enables not only selective HQ sensing but also its facilitated liquid–liquid extraction and recovery from aqueous to organic solvent media (Figure ).…”

Section: Introductionmentioning

confidence: 99%

Selective Extraction, Recovery, and Sensing of Hydroquinone Mediated by a Supramolecular Pillar[5]quinone Quinhydrone Charge-Transfer Complex

Pananusorn

Ruengsuk

Docker

et al. 2022

ACS Appl. Mater. Interfaces

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Intermolecular interactions between an electron-rich aromatic hydroquinone (HQ) with its electron deficient counterpart, benzoquinone (BQ), result in the formation of a quinhydrone charge-transfer complex. Herein, we report a novel quinhydrone-type complex between pillar[5]quinone (P[5]Q) and HQ. Characterized by a suite of spectroscopic techniques including 1H NMR, UV–visible, and FTIR together with PXRD, SEM, BET, CV, and DFT modeling studies, the stability of the complex is determined to be due to an electron–proton transfer reaction coupled with a complementary donor–acceptor interaction. The selectivity of P[5]Q toward HQ over other dihydroxybenzene isomers allows for not only the naked-eye detection of HQ but also its selective liquid–liquid extraction and recovery from aqueous media.

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A three-electrode integrated electrochemical platform based on nanoporous gold for the simultaneous determination of hydroquinone and catechol with high selectivity

Abstract: In this paper, a novel three-electrode integrated electrochemical platform (TEIEP) is designed and fabricated for simultaneous detection of hydroquinone (HQ) and catechol (CC), in which nanoporous gold (NPG) served as...

Cited by 26 publications

References 64 publications

Simultaneous Detection of Dihydroxybenzene Isomers Using Electrochemically Reduced Graphene Oxide-Carboxylated Carbon Nanotubes/Gold Nanoparticles Nanocomposite

Simultaneous Detection of Dihydroxybenzene Isomers Using Electrochemically Reduced Graphene Oxide-Carboxylated Carbon Nanotubes/Gold Nanoparticles Nanocomposite

Electrochemical Sensing Platforms of Dihydroxybenzene: Part 2 – Nanomaterials Excluding Carbon Nanotubes and Graphene

Selective Extraction, Recovery, and Sensing of Hydroquinone Mediated by a Supramolecular Pillar[5]quinone Quinhydrone Charge-Transfer Complex

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