A novel hydrazine electrochemical sensor based on the high specific surface area graphene

Wang, Cong; Zhang, Li; Guo, Zhihua; Xu, Jigui; Wang, Hongyan; Zhai, Kefeng; Xin, Zhuo

doi:10.1007/s00604-010-0304-6

Cited by 178 publications

(68 citation statements)

References 41 publications

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“…These unique properties make graphene a promising supporting component for potential applications in the fields of batteries [10], supercapacitors [11], nanoelectronics and electrochemical sensors [12][13][14], etc. Recently, numerous investigations have been focused on graphene-based hybrid nanomaterials to achieve the functionalities of graphene, for further expanding the application range and enhancing the performance of graphene-based materials.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, numerous investigations have been focused on graphene-based hybrid nanomaterials to achieve the functionalities of graphene, for further expanding the application range and enhancing the performance of graphene-based materials. For example, Prussion blue/graphene [15], metal oxide/graphene [16], polymer/ graphene [12] or cyclodextrin/graphene [17] has been developed for biosensing applications.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical synthesis of a graphene sheet and gold nanoparticle-based nanocomposite, and its application to amperometric sensing of dopamine

Deng

Shi

et al. 2012

Microchim Acta

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We describe a simple, green and controllable approach for electrochemical synthesis of a nanocomposite made up from electrochemically reduced graphene oxide (ERGO) and gold nanoparticles. This material possesses the specific features of both gold nanoparticles and graphene. Its morphology was characterized by scanning electron microscopy which reveals a homogeneous distribution of gold nanoparticles on the graphene sheets. Cyclic voltammetry was used to evaluate the electrochemical properties of this nanocomposite towards dopamine by modification of it on surface of glassy carbon electrode (GCE). Compared to the bare GCE, the electrode modified with gold nanoparticles, and the electrode modified with ERGO, the one modified with the nanocomposite displays better electrocatalytic activity. Its oxidation peak current is linearly proportional to the concentration of dopamine (DA) in the range from 0.1 to 10 μM, with a detection limit of 0.04 μM (at S/N03). The modified electrode also displays good storage stability, reproducibility, and selectivity.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical synthesis of a graphene sheet and gold nanoparticle-based nanocomposite, and its application to amperometric sensing of dopamine

Deng

Shi

et al. 2012

Microchim Acta

View full text Add to dashboard Cite

show abstract

“…[3][4][5][6]. Recently, numerous investigations have been focused on graphene-based hybrid nanomaterials to achieve the functionalities of graphene, for further expanding the application range and enhancing the performance of graphene-based materials [7,8]. Toward this objective, many graphene-based nanocomposites such as polymer/graphene, metal/graphene, and metal oxides/ graphene have been successfully designed toward applications in technological fields of catalyst and biosensors.…”

Section: Introductionmentioning

confidence: 98%

Functionalization of graphene with Prussian blue and its application for amperometric sensing of H2O2

Shi

et al. 2012

J Solid State Electrochem

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As a two-dimensional carbon material with high surface area and conductivity, graphene shows great promise for designing composite nanomaterials to achieve highperformance electrochemical devices. In this work, we prepared graphene-based nanocomposite material by electrochemically depositing Prussian blue (PB) nanoparticles on the surface of graphene. Fourier transform infrared spectra, SEM, and cyclic voltammetry were used to characterize the successful immobilization of PB. Compared with PB films and graphene sheets, the PB-graphene composite films showed the largest current response to the reduction of H 2 O 2 , probably due to the synergistic effects between graphene sheets and PB nanoparticles. Therefore, a fast and highly sensitive amperometric sensor for H 2 O 2 was obtained with a detection sensitivity of 1.6 μA μM −1 H 2 O 2 per cm 2 and a linear response range of 50∼5,000 μM. The detection limit of H 2 O 2 was 20 nM at a signal-to-noise ratio of 3. These obtained results are much better than those reported for carbon nanotubes-based amperometric sensors.

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“…In general, surface area, pore size and pore distribution, and surface chemistry are the major factors in the separation process of elements. Nanoparticles as sorbents for separation of elements are an increasing interest owing to its effectiveness [16,17]. Nanosilica is a distinguished example of nanosorbents.…”

Section: Introductionmentioning

confidence: 99%

Catechol-functionalized nanosilica for adsorption of germanium ions from aqueous media

Cui

Wang

Peng

et al. 2015

J Sol-Gel Sci Technol

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We prepared the catechol-functionalized nanosilica for adsorption of germanium (Ge) ions from aqueous media. The functionalized nanosilica was characterized by FTIR, TGA, TEM, BET, and XPS. The influence of pH, Ge initial concentration, and time of the adsorption process was investigated. Under the optimum condition, the maximum adsorption capacity of Ge ions was 0.048 mg m -2 at pH 4.5. The adsorption mechanism is the chelating interaction between hydroxyl and Ge(OH) 4 . The functionalized nanosilica was able to selectively adsorb Ge ions from tellurium(IV) and boron. Langmuir isotherm was found to better fit the experiment data rather than Freundlich isotherm. The kinetics of the adsorption process of Ge ions on the functionalized nanosilica was investigated using the pseudo-first-order and pseudo-second-order models, and the results indicated that the pseudosecond order equation model provided the best correlation with the experimental results. Graphical Abstract& Shixing Wang

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A novel hydrazine electrochemical sensor based on the high specific surface area graphene

Cited by 178 publications

References 41 publications

Electrochemical synthesis of a graphene sheet and gold nanoparticle-based nanocomposite, and its application to amperometric sensing of dopamine

Electrochemical synthesis of a graphene sheet and gold nanoparticle-based nanocomposite, and its application to amperometric sensing of dopamine

Functionalization of graphene with Prussian blue and its application for amperometric sensing of H2O2

Catechol-functionalized nanosilica for adsorption of germanium ions from aqueous media

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