Simultaneous electrochemical determination of guanosine and adenosine with graphene–ZrO2 nanocomposite modified carbon ionic liquid electrode

Sun, Wei; Wang, Xiuzhen; Sun, Xiaohuan; Ding, Ying; Liu, Jun; Lei, Bing‐Xin; Sun, Zhenfan

doi:10.1016/j.bios.2013.01.030

Cited by 40 publications

(11 citation statements)

References 42 publications

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“…Reports concerning metal oxide-based electrochemical biosensors are relatively more than other metal compounds. Metal oxide nanoparticles that have been reported include CeO 2 [109], NiO [49,110], Fe 3 O 4 [111], CdO [112], ZnO [113] and ZrO 2 [114,115], etc. Karimi-Maleh el al.…”

Section: Metal Nanomaterials/il-based Biosensorsmentioning

confidence: 99%

Recent advances in ionic liquid-based electrochemical biosensors

Wang

Hao

2016

Science Bulletin

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Section: Metal Nanomaterials/il-based Biosensorsmentioning

confidence: 99%

Recent advances in ionic liquid-based electrochemical biosensors

Wang

Hao

2016

Science Bulletin

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“…Graphene-metal-oxide-based nanohybrid materials have a wide range of applications from electrochemical sensing to the ORR electrocatalysis, due to their superior properties and low cost [87,88]. The new types of materials could open up a new window for superior electrocatalytic activity as well as selectivity and durability, which can act as promising electrode materials for various electrochemical reactions [89,90,91]. In this section, we present some examples for the applications of graphene-metal oxide nanohybrids for different kinds of electrocatalytic reactions.…”

Section: Applications Of Graphene-metal Oxide Nanohybrids As Electrocmentioning

confidence: 99%

Electrocatalytic Applications of Graphene–Metal Oxide Nanohybrid Materials

Halder¹,

Zhang

Chi³

2016

Advanced Catalytic Materials - Photocatalysis and Other Current Trends

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Development of state-of-the-art electrocatalysts using commercially available precursors with low cost is an essential step in the advancement of next-generation electrochemical energy storage/conversion systems. In this regard, noble metal-free and graphene-supported nanocomposites are of particular interest. Graphene-based nanocomposite is an excellent candidate as energy-device and sensor-related electrode materials, largely due to their high electrical conductivity, large specific surface area, high-speed electron/heat mobility, and reasonably good mechanical strength. Among many types of graphenebased composite materials, graphene-metal oxide nanohybrids hold great promise toward engineering efficient electrocatalysts and have attracted increasing interest in both scientific communities and industrial partners around the world. The goal of this chapter is primarily set on an overview of cutting-edge developments in graphene-metal oxide nanohybrid materials, with the recently reported results from worldwide research groups. This chapter is presented first with an introduction, followed by synthetic methods and structural characterization of nanocomposites, an emphasis on their applications in energy and sensor-related fields, and finally completed with brief conclusions and outlook.

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“…Gong et al proposed a one-step coelectrodeposition of ZrO 2 nanoparticle-decorated GR hybrid nanosheets for an enzymeless parathion sensor [22]. Sun et al also applied a GR-ZrO 2 nanocomposite-modified electrode for the simultaneous electrochemical determination of guanosine and adenosine [23].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical DNA sensor for Staphylococcus aureus nuc gene sequence with zirconia and graphene modified electrode

Sun

Wang

et al. 2015

J Solid State Electrochem

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In this paper, zirconia (ZrO 2 ) and graphene (GR) nanocomposite was electrodeposited on the surface of carbon ionic liquid electrode (CILE), which was used to construct an electrochemical DNA biosensor. GR was electroreduced from graphene oxide by potentiostatic method, and ZrO 2 nanoparticle was further electrodeposited on GR/CILE by cycling voltammetric scan in a ZrOCl 2 solution. The presence of GR on the electrode surface can provide a highly conductive interface with large surface area for the loading of ZrO 2 nanoparticles. Single-stranded DNA (ssDNA) probe sequences with phosphate group at the 5′ end could be easily immobilized on the surface of ZrO 2 /GR/CILE due to the strong affinity between ZrO 2 and phosphate groups. The ssDNA/ZrO 2 /GR/CILE was applied to hybridize with the target ssDNA sequence, and methylene blue (MB) was used as the electrochemical indicator. Due to the different binding models of MB with double-stranded DNA and ssDNA on the electrode surface, electrochemical response of MB was decreased after the hybridization reaction. Under the optimal conditions, the reduction peak current of MB was proportional to the concentration of Staphylococcus aureus nuc gene sequence in the range from 1.0×10 −13 to 1.0×10 −6 mol L −1 with the detection limit of 3.23 × 10 −14 mol L −1 (3σ). The electrochemical DNA sensor exhibited good selectivity to various mismatched ssDNA sequences, and the polymerase chain reaction amplification products of S. aureus nuc gene sequence were further detected with satisfactory results. Therefore, this electrochemical DNA sensor with ZrO 2 nanoparticles and GR nanosheet modified electrode could be used for the detection of specific ssDNA sequence in real biological samples.

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Simultaneous electrochemical determination of guanosine and adenosine with graphene–ZrO2 nanocomposite modified carbon ionic liquid electrode

Cited by 40 publications

References 42 publications

Recent advances in ionic liquid-based electrochemical biosensors

Recent advances in ionic liquid-based electrochemical biosensors

Electrocatalytic Applications of Graphene–Metal Oxide Nanohybrid Materials

Electrochemical DNA sensor for Staphylococcus aureus nuc gene sequence with zirconia and graphene modified electrode

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