Green synthesis of a silver nanoparticle–graphene oxide composite and its application for As(<scp>iii</scp>) detection

Dar, Riyaz Ahmad; Khare, Ninad G.; Cole, Daniel P.; Karna, Shashi P.; Srivastava, Ashwini K.

doi:10.1039/c4ra00934g

Cited by 84 publications

(36 citation statements)

References 51 publications

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“…A wide linear response to 4‐NP in the ranges of 1.0 × 10 −8 to 1.0 × 10 −7 m and 1.0 × 10 −7 to 1.5 × 10 −3 m was achieved with a low detection limit of 8.9 × 10 −10 m . Furthermore, Dar et al reported the application of AgNPs‐GO modified glassy carbon electrode (AgNPs‐GO/GCE) for arsenic(III) detection, which exhibited a wide linear range ((13.33–375.19) × 10 −9 m ) and a high sensitivity (180.5 µA µ m −1 ) with a detection limit of 0.24 × 10 −9 m . Shaikh et al constructed Ag–rGO as nitrite (NO 2 − ) sensor and found that this sensor exhibited two linear ranges: one from 10 × 10 −9 to 1000 × 10 −9 m with a sensitivity of 3.0 × 10 4 µA m m −1 cm −2 ( R = 0.999) and another from 10 × 10 −6 to 1000 × 10 −6 m with a sensitivity of 373.46 µA m m −1 cm −2 ( R = 0.978), with a sensitive detection below 1 ppm .…”

Section: Sensorsmentioning

confidence: 99%

Advancement of Ag–Graphene Based Nanocomposites: An Overview of Synthesis and Its Applications

Zeng

Chen

et al. 2018

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124

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Graphene has been employed as an excellent support for metal nanomaterials because of its unique structural and physicochemical properties. Silver nanoparticles (AgNPs) with exceptional properties have received considerable attention in various fields; however, particle aggregation limits its application. Therefore, the combination of AgNPs and graphene based nanocomposites (Ag-graphene based nanocomposites) has been widely explored to improve their properties and applications. Excitingly, enhanced antimicrobial, catalytic, and surface enhanced Raman scattering properties are obtained after their combination. In order to have a comprehensive knowledge of these nanocomposites, this Review highlights the chemical and biological synthesis of Ag-graphene nanocomposites. In particular, their applications as antimicrobial agents, catalysts, and sensors in biomedicine, agricultural protection, and environmental remediation and detection are covered. Meanwhile, the factors that influence the synthesis and applications are also briefly discussed. Furthermore, several important issues on the challenges and new directions are also provided for further development of these nanocomposites.

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Section: Sensorsmentioning

confidence: 99%

Advancement of Ag–Graphene Based Nanocomposites: An Overview of Synthesis and Its Applications

Zeng

Chen

et al. 2018

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124

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“…70 Fig. 107 Some of other developed electrochemical sensors for the detection and determination of heavy metal ions such as Hg(II), [108][109][110][111] Cr(VI), 69,109 Pb(II), 113,114 Cd(II), 114,115 As(III) [116][117][118] and Cu(II) 119 using the nanostructured materials are listed in Table 1. The Au NPs ($10 nm in diameter) were well dispersed on the as-prepared TiO 2 NTs.…”

Section: Detection Of Heavy Metalsmentioning

confidence: 99%

Nanomaterials-based electrochemical detection of chemical contaminants

2014

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Owing to the high toxicity and detrimental effects of chemical contaminants to human health and the environment, public concerns over chemical contaminants in the environment and in foods have been mounting drastically. It is therefore significant to monitor contaminants via portable sensing devices, which encompass the demands of being low-cost and the potential for online environmental monitoring and food safety applications. This review will assess various concepts and recent advancements in design and the application of state-of-the-art nanomaterials through the incorporation of carbon nanomaterials, metallic and metallic oxide nanoparticles, titanium dioxide nanotubes, and dendrimers toward the development of electrochemical sensors for the detection of chemical contaminants in the environment and in foods. The development of nanomaterials based sensors facilitated by recent advances is having a major impact on sensor industries for environmental and food safety monitoring.Electrochemical sensing strategies have spurred intense interest in the research community as they have the capacity to serve as ideal sensor technology candidates, having such features as rapid response, robustness, high sensitivity and selectivity, low cost, miniaturization, and the potential for real-time monitoring. Nanomaterials have strong potential for increasing the competitiveness of new sensors for environmental monitoring and food safety applications through the combination of efficacious, yet simple fabrication techniques in the development of critical nanometric interfaces, and the optimization of their design and performance. Opportunities and future considerations for the use of nanomaterials in electrochemical sensors for producing advanced environmental and food sensing devices will also be addressed.

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“…Among them, Ag is a noble metal that possesses high electrical conductivity, remarkable antibacterial activity, and excellent catalytic activity. Dar et al 28 proposed a low-cost facile method to fabricate an Ag NP-reduced graphene oxide (AgNP/rGO) composite to form an electrochemical sensor that showed high sensitivity for an environmentally toxic metal element, As. Moreover, a heminfunctionalized graphene oxide was fabricated to simultaneously determine AA, DA and UA.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a silver nanowire-reduced graphene oxide-based electrochemical biosensor and its enhanced sensitivity in the simultaneous determination of ascorbic acid, dopamine, and uric acid

Wang

Hsiao

et al. 2015

J. Mater. Chem. C

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Silver nanowire/reduced graphene oxide nanocomposites (AgNW/rGO) are synthesized using a two-step process: preparation of silver nanowire/graphene oxide (AgNW/GO) and the microwave-assisted hydrothermal (MAH) method. The nanocomposites are characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) analyses. Ascorbic acid (AA), dopamine (DA), and uric acid (UA) are determined simultaneously on the AgNW/rGO-modified screen-printed carbon electrodes (SPCEs) by cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The results reveal that AgNW/rGO-modified SPCEs exhibit well-resolved oxidation peaks with a negative shift in peak potential and enhanced peak currents in the simultaneous determination of AA, DA and UA in comparison with the pure rGO-modified SPCEs, demonstrating the superior catalytic activity of AgNW/rGO composites. AgNW/rGO-modified SPCEs show the linear response of AA, DA and UA in the concentration range of 45-1550, 40-450 and 35-300 mM with a detection limit of 0.81, 0.26 and 0.30 mM (S/N = 3), respectively. The covalent bonds between AgNWs and rGOs are expected to suppress the random attachment of AgNWs and facilitate the electron transfer and reactant transport by constructing a porous and continuous electrically conductive network. The excellent sensitivity of AgNW/rGO composites makes them become promising electrode materials in the field of electrochemical biosensors.

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Green synthesis of a silver nanoparticle–graphene oxide composite and its application for As(iii) detection

Abstract: We report a facile and green synthetic approach to synthesize a silver nanoparticle (AgNPs)–graphene oxide (GO) composite using beta cyclodextrin as a stabilizing agent and ascorbic acid as a reducing agent.

Cited by 84 publications

References 51 publications

Advancement of Ag–Graphene Based Nanocomposites: An Overview of Synthesis and Its Applications

Advancement of Ag–Graphene Based Nanocomposites: An Overview of Synthesis and Its Applications

Nanomaterials-based electrochemical detection of chemical contaminants

Fabrication of a silver nanowire-reduced graphene oxide-based electrochemical biosensor and its enhanced sensitivity in the simultaneous determination of ascorbic acid, dopamine, and uric acid

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