High sensitivity hydrogen peroxide and hydrazine sensor based on silver nanocubes with rich {100} facets as an enhanced electrochemical sensing platform

Wang, Yinhu; Yang, Xuejuan; Bai, Jing; Jiang, Xiue; Fan, Gungyin

doi:10.1016/j.bios.2012.10.099

Cited by 132 publications

(30 citation statements)

References 42 publications

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“…The linear ranges and detection limits shown in this work are superior to most of the reported [15,28,[31][32][33][34][35][36][37][38][39][40]. It can be seen that the present method has the comparable sensitivity and detection limit for the hydrazine detection.…”

Section: The Performance Of Cohcf/go/cnts-cooh/gcesupporting

confidence: 49%

Synthesis of Cobalt hexacyanoferrate decorated graphene oxide/carbon nanotubes-COOH hybrid and their application for sensitive detection ofhydrazine

Deng

Qiu

et al. 2015

Electrochimica Acta

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Section: The Performance Of Cohcf/go/cnts-cooh/gcesupporting

confidence: 49%

Synthesis of Cobalt hexacyanoferrate decorated graphene oxide/carbon nanotubes-COOH hybrid and their application for sensitive detection ofhydrazine

Deng

Qiu

et al. 2015

Electrochimica Acta

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“…[18][19][20][21] For example, Filippo et al 22 and Guascito et al 23 have used polyvinyl alcohol to stabilize Ag NPs and used for H 2 O 2 sensing. Zhao et al 8 Wang et al 24 and Sophia et al 25 employed PVP ( polyvinyl pyrrolidone) as protecting agent for Ag NPs to be used in H 2 O 2 sensing. Recently, poly (N-isopropylacrylamide) ( pNIPAm) copolymer microgels have been used successfully to stabilize Ag NPs.…”

Section: Introductionmentioning

confidence: 99%

Poly (N-isopropylacrylamide)-co-(acrylic acid) microgel/Ag nanoparticle hybrids for the colorimetric sensing of H₂O₂

2015

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Poly (N-isopropylacrylamide)-co-(acrylic acid) (pNIPAm-co-AAc) microgels composed of Ag nanoparticles (Ag NPs) have been synthesized and employed for the colorimetric sensing of H2O2. Each pNIPAm-co-AAc microgel, which exhibited a diameter of ∼800 nm, contained multiple Ag NPs (diameter of ∼5 nm), and solutions of these hybrid materials showed a UV-vis absorption band at ∼400 nm. This is due to the excitation of the Ag NP surface plasmon. We go on to show that the intensity of this absorption band is dependent on the concentration of H2O2 in solution. Specifically, in the presence of H2O2 the magnitude of the absorption peak dramatically decreases in a linear fashion over the concentration range of 0.30 to 3.00 μM H2O2 (r(2) = 0.9918). We go on to show that the response is selective for H2O2 and can still function in complex mixtures, e.g., we showed that the response is still robust in milk samples. While Ag NPs themselves can exhibit similar responses, this system has many benefits including sample processing and long term stability - i.e., Ag NPs are destabilized in solutions of a certain pH, and aggregate readily. Our microgel/Ag NP hybrids have been shown to be extremely stable and are easily purified prior to use by simple centrifugation/washing protocols. This system is simple and straightforward to use, is low cost, and can be used in complex media, which makes it practical for analyzing complex biological and environmental samples.

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“…The proposed sensor was stored at 4°C. The response to 0.1 mmol/L hydrazine was tested each week within a month of storage, the response of the sensor only decreased by 6.3% compared to the initial response, which shows the long-term stability [27][28][29][30][31][32][33][34][35][36].…”

Section: Stability and Reproducibilitymentioning

confidence: 92%

Effect of Variable Nanogeometry of Titanium oxide-gold Nanocomposite: Application in Electrochemical Sensing of Hydrazine

Prem¹,

ey²,

Prakash³

2014

J Phys Chem Biophys

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3-Aminopropyltrimethoxysilane (3-APTMS) and 3-glycidoxypropyltrimethoxy-silane (3-GPTMS) mediated synthesis of gold nanoparticles (AuNPs) of two different sizes [AuNP 1 (10 nm) and AuNP 2 (20 nm)] were made and used for nano-composite formation with TiO 2 nanoparticle suspension. The resulting TiO 2-AuNP 1 and TiO 2-AuNP 2 nanocomposites were used for making chemically modified electrodes to understand the role of nanogeometry in chemical sensing. TiO 2-AuNP 1 and TiO 2-AuNP 2 nanocomposites were characterized by transmission electron microscopy and UV-VIS spectroscopy. The analytical results revealed the average size of the nanocomposite in the range of 20-25nm. The nanocomposites were employed for modification of graphite paste electrodes and applied in electrochemical sensing of hydrazine. The results demonstrated that TiO 2-AuNP 1 exhibit better electrocatalytic activity as compared to that of TiO 2-AuNP 2 and only TiO 2 towards oxidation of hydrazine. Amperometric analysis of hydrazine on these electrodes at the applied potential of 0.4 V vs Ag/AgCl was made to quantify the sensing ability of modified electrodes. The sensitivity and lowest detection limit was found as 25, 57.2 and 145.7 µAmM-1 cm-2 and 50, 100, 20 nM for TiO 2 , TiO 2-AuNP 2 and TiO 2-AuNP 1 respectively.

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High sensitivity hydrogen peroxide and hydrazine sensor based on silver nanocubes with rich {100} facets as an enhanced electrochemical sensing platform

Cited by 132 publications

References 42 publications

Synthesis of Cobalt hexacyanoferrate decorated graphene oxide/carbon nanotubes-COOH hybrid and their application for sensitive detection ofhydrazine

Synthesis of Cobalt hexacyanoferrate decorated graphene oxide/carbon nanotubes-COOH hybrid and their application for sensitive detection ofhydrazine

Poly (N-isopropylacrylamide)-co-(acrylic acid) microgel/Ag nanoparticle hybrids for the colorimetric sensing of H₂O₂

Effect of Variable Nanogeometry of Titanium oxide-gold Nanocomposite: Application in Electrochemical Sensing of Hydrazine

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High sensitivity hydrogen peroxide and hydrazine sensor based on silver nanocubes with rich {100} facets as an enhanced electrochemical sensing platform

Cited by 132 publications

References 42 publications

Synthesis of Cobalt hexacyanoferrate decorated graphene oxide/carbon nanotubes-COOH hybrid and their application for sensitive detection ofhydrazine

Synthesis of Cobalt hexacyanoferrate decorated graphene oxide/carbon nanotubes-COOH hybrid and their application for sensitive detection ofhydrazine

Poly (N-isopropylacrylamide)-co-(acrylic acid) microgel/Ag nanoparticle hybrids for the colorimetric sensing of H2O2

Effect of Variable Nanogeometry of Titanium oxide-gold Nanocomposite: Application in Electrochemical Sensing of Hydrazine

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Poly (N-isopropylacrylamide)-co-(acrylic acid) microgel/Ag nanoparticle hybrids for the colorimetric sensing of H₂O₂