Advances in Electrochemical Detection Electrodes for As(III)

Hu, Haibing; Xie, Baozhu; Lu, Yangtian; Zhu, Jianxiong

doi:10.3390/nano12050781

Cited by 27 publications

(15 citation statements)

References 216 publications

(129 reference statements)

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“…This gives a clue that a graphene-based electrode could possibly be a low-cost, high-performance solution for the As(III) sensor in the absence of expensive Pt and Au. Recent advances in As(III) electrochemical sensing approaches have been summarized in [ 14 ]. However, there has been no report of using microporous graphene foam with nanoflowers as an electrode for As(III) sensing, which will be reported in this work.…”

Section: Introductionmentioning

confidence: 99%

Nanoflowers on Microporous Graphene Electrodes as a Highly Sensitive and Low-Cost As(III) Electrochemical Sensor for Water Quality Monitoring

Kosuvun

Danvirutai

Hormdee

et al. 2023

Sensors

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In this work, we report a low-cost and highly sensitive electrochemical sensor for detecting As(III) in water. The sensor uses a 3D microporous graphene electrode with nanoflowers, which enriches the reactive surface area and thus enhances its sensitivity. The detection range achieved was 1–50 ppb, meeting the US-EPA cutoff criteria of 10 ppb. The sensor works by trapping As(III) ions using the interlayer dipole between Ni and graphene, reducing As(III), and transferring electrons to the nanoflowers. The nanoflowers then exchange charges with the graphene layer, producing a measurable current. Interference by other ions, such as Pb(II) and Cd(II), was found to be negligible. The proposed method has potential for use as a portable field sensor for monitoring water quality to control hazardous As(III) in human life.

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Section: Introductionmentioning

confidence: 99%

Nanoflowers on Microporous Graphene Electrodes as a Highly Sensitive and Low-Cost As(III) Electrochemical Sensor for Water Quality Monitoring

Kosuvun

Danvirutai

Hormdee

et al. 2023

Sensors

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“…To date, the potential utility of a diverse range of materials, including bulk/ nanophase phase metals and other materials such as carbon nanoparticles, noble MNPs, metal oxide nanoparticles, and bimetallic nanoparticles including biomaterial-modified electrodes, for the electrochemical sensing of arsenic has been tested. 13 Li et al 17 have reported an intriguing application of the Au−Fe 2 O 3 nanocomposite surface-confined Fe(II)/Fe(III) redox pair in facilitating the electrochemical detection of As(III). With the aim to mimic this wonder material, Prussian blue (PB), a bimetallic coordination compound has been extensively investigated for its catalytic and electrocatalytic aspects.…”

Section: ■ Introductionmentioning

confidence: 99%

Interfacial Synthesis of Prussian Blue-Decorated Sulfur-Doped Reduced Graphene Oxide Nanocomposite for Electrochemical Sensing and Detoxification of As(III)

Wani,

Jan,

Bhat

et al. 2023

ACS Appl. Nano Mater.

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Electrochemical sensing is considered as one of the most promising approaches for quick, reliable, and on-site detection and monitoring of arsenic (As) levels in water. However, the unavailability of stable, selective, and affordable electrode materials hampers the development of portable, cost-effective, reliable, and practically applicable arsenic-sensing electrochemical devices. In this article, we describe a straightforward biphasic synthesis method for the crafting of sulfur-doped reduced graphene oxide (S-rGO)-supported Prussian blue (PB) nanodeposits (S-rGO/PB), a nanocomposite with exceptional stability and activity for selective and sensitive electrochemical sensing of As. The S-rGO/PB is demonstrated to selectively and sensitively electrocatalyze the As(0)/As(III) and As(III)/As(V) charge transfer processes via the participation of the Fe(II)/Fe(III) cycle as revealed by X-ray photoelectron spectroscopy, thereby ensuring accurate and sensitive electrochemical sensing of As in water samples. We demonstrate that with the S-rGO/PB electrode, As(III) can be sensed via differential pulse voltammetry (DPV) with sensitivity values of 1.79 (As(0)–As(III)) and 10.69 μA ppb–1 cm–2 (As(III)–As(V)) and limits of detection as low as 0.0104 and 0.0536 ppb, respectively. Alongside real-time applicability, the S-rGO/PB is demonstrated to exhibit excellent stability and specificity toward arsenic sensing even in the presence of other interferents. Importantly, the As(III) estimates obtained for real water samples using DPV over S-rGO/PB closely match the estimates obtained with atomic absorption spectrometry, a highly expensive and sophisticated state-of-the-art technique known for its accuracy in estimation of the sub-ppb traces of heavy metals. The presented results suggest that the S-rGO/PB composite is a promising electrode material that can facilitate the design and development of portable, affordable, reliable, and practically applicable electrochemical setups for on-site sensing and electrodetoxification of As(III) in water samples. The availability and accessibility of such setups are a must for the worldwide success of arsenic mitigation initiatives, particularly in underdeveloped and impoverished nations.

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“…To solve this problem, graphene and derivatives of graphene (functionalization, modification and recombination of graphene) have received significant attention in the area of electrochemistry, because of graphene have excellent properties such as high‐speed electron mobility, large surface area, and high electrical conductivity [10–19] . Over the recent decade various graphene based electrode materials such as noble metal/graphene, metal oxide/graphene, conductive polymer/graphene used towards electrochemical detection of As ions with high sensitivity and high electrode stability [20] . Among these strategies, graphene surface covalently functionalization with organic heterocyclic compounds [21] for electrode material is one of the most extensively investigated and it has proven to be a highly effective method.…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12][13][14][15][16][17][18][19] Over the recent decade various graphene based electrode materials such as noble metal/graphene, metal oxide/graphene, conductive polymer/ graphene used towards electrochemical detection of As ions with high sensitivity and high electrode stability. [20] Among these strategies, graphene surface covalently functionalization with organic heterocyclic compounds [21] for electrode material is one of the most extensively investigated and it has proven to be a highly effective method. The organic heterocyclic compound functionalized with graphene has been widely used for metal ion detection in recent decades.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Sensing of Arsenic Ions Using a Covalently Functionalized Benzotriazole‐Reduced Graphene Oxide‐Modified Screen‐Printed Carbon Electrode

Gunasekaran

Rayappan

Rajendran³

et al. 2022

ChemistrySelect

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Herein, Tecoma stans (TS) flower extract was used as an efficient green reducing agent for graphene oxide (GO) to produce reduced graphene oxide (rGO) for the first time. The organic heterocyclic benzotriazole (BTA) was incorporated onto the rGO surface through a nucleophilic substitution reaction to produce covalently bonded BTA-rGO. The prepared materials were analyzed by UV-visible spectroscopy, powder Xray diffraction measurements (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and Scanning Electron Microscopy (SEM). A screen-printed carbon electrode (SPCE) was modified with BTA-rGO. The fabricated electrode was electrochemically analyzed by using K 3 [Fe (CN) 6 ] as a redox probe. To evaluate the sensing ability of BTA-rGO/SPCE electrode towards arsenic ions using differential pulse voltammetry (DPV) and amperometry techniques. The BTA functional was play the major role in significant improving the conductivity and sensitivity of the designed electrode. The BTA-rGO/SPCE modified electrode demonstrates voltammetric determination of As 3 + ions with a limit of detection, high sensitivity, and linear range values of 2.89 nM, 1.8 μA nM À 1 , and 2-40 nM, respectively. Furthermore, all of these impressive results indicate that BTA-rGO can be used as an electrodematerial with capability for electrochemical arsenic sensors. The fabricated sensors showed repeatability and reproducibility in this study.

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Advances in Electrochemical Detection Electrodes for As(III)

Cited by 27 publications

References 216 publications

Nanoflowers on Microporous Graphene Electrodes as a Highly Sensitive and Low-Cost As(III) Electrochemical Sensor for Water Quality Monitoring

Nanoflowers on Microporous Graphene Electrodes as a Highly Sensitive and Low-Cost As(III) Electrochemical Sensor for Water Quality Monitoring

Interfacial Synthesis of Prussian Blue-Decorated Sulfur-Doped Reduced Graphene Oxide Nanocomposite for Electrochemical Sensing and Detoxification of As(III)

Electrochemical Sensing of Arsenic Ions Using a Covalently Functionalized Benzotriazole‐Reduced Graphene Oxide‐Modified Screen‐Printed Carbon Electrode

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