Palladium nanoparticle/chitosan-grafted graphene nanocomposites for construction of a glucose biosensor

Zeng, Qiong; Cheng, Jiujun; Liu, Xiaofei; Bai, Haotian; Jiang, Jian‐Hui

doi:10.1016/j.bios.2011.01.024

Cited by 206 publications

(57 citation statements)

References 44 publications

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“…507 Here, graphene was functionalized covalently with chitosan, which improved the biocompatibility and hydrophilicity of the hybrid material. The hybrid biosensor was prepared subsequently by immobilization of glucose oxidase on a HRG/Pd modified glassy carbon electrode, and it showed good electrocatalytical activity, high sensitivity and good reproducibility.…”

Section: Biosensorsmentioning

confidence: 99%

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

et al. 2015

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Section: Biosensorsmentioning

confidence: 99%

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

et al. 2015

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“…The resulting nanohybrids offer enhanced electrocatalytic activity toward the hydrogen peroxide product or offer a direct electron transfer of GOD (e.g., Figure 12). For example, the decoration of graphene with metal nanoparticles ( Figure 11A) has received considerable attention in connection to the immobilization of GOD [33,34,[69][70][71][72]. Composite coatings of graphene/ AuNPs with chitosan [33] or Nafion [69] have been particularly useful for improved glucose enzyme electrodes ( Figure 12).…”

Section: Biocatalytic Electrochemical Sensors Based Onmentioning

confidence: 99%

“…Both ionic liquids and chitosan can act as effective binder systems, inducing the solubilization of the corresponding carbon nanomaterial (CNTs or graphene) and facilitating their manipulation and subsequent functionalization [32][33][34]. For example, different functional ionic liquids can be used to tailor the surfaces of CNTs to be negatively or positively charged, towards the selective attachment of different metal nanoparticles, semiconductor nanocrystals, or magnetic nanoparticles [35].…”

Section: Introductionmentioning

confidence: 99%

Nanobioelectroanalysis Based on Carbon/Inorganic Hybrid Nanoarchitectures

Campuzano

Wang

2011

Electroanalysis

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The emergence of nanotechnology has opened new horizons for electrochemical biosensors. This review highlights new concepts for electrochemical biosensors based on different carbon/inorganic hybrid nanoarchitectures. Particular attention will be given to hybrid nanostructures involving 1-or 2-dimensional carbon nanotubes or graphene along with inorganic nanoparticles (gold, platinum, quantum dot (QD), metal oxide). Latest advances (from 2007 onwards) in electrochemical biosensors based on such hybrids of carbon/inorganic-nanomaterial heterostructures are discussed and illustrated in connection to enzyme electrodes for blood glucose or immunoassays of cancer markers. Several strategies for using carbon/inorganic nanohybrids in such bioaffinity and biocatalytic sensing are described, including the use of hybrid nanostructures for tagging or modifying electrode transducers, use of inorganic nanomaterials as surface modifiers along with carbon nanomaterial label carriers, and carbon nanostructure-based electrode transducers along with inorganic amplification tags. The implications of these nanoscale bioconjugated hybrid materials on the development of modern electrochemical biosensors are discussed along with future prospects and challenges.

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“…Thus, it offers to improve hydrophilicity as well as biocompatibility via covalent grafting techniques. The co-existence of chitosan and CNTs creates a positive charge which is favorable for the further immobilization of biomolecules that are negatively charged [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

MWCNT-Chitosan-ZrO2 Nanocomposite Modified Sensor for Sensitive and Selective Electrochemical Determination of Serotonin

Devnani¹

2015

IJIRSET

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ABSTRACT:A novel sensitive electrochemical sensor has been developed by modification of glassy carbon electrode (GCE) with multi-walled carbon nanotube (MWCNT), chitosan (CHIT) and zirconium oxide (ZrO 2 ) nanoparticles. The morphological characteristics of nanocomposite (MWCNT-CHIT-ZrO 2 or MCZ) were studied by scanning electron microscope and atomic force microscopy. The electrochemical behavior of serotonin at nanocomposite modified GCE (MCZ/GCE) was investigated in pH 6.5 Briton Robinson buffer solution using cyclic voltammetry and square wave voltammetry. MCZ/GCE showed an enhancement in the current response as compared to bare GCE and showed a linear response to serotonin in the range 800 to 5000 nM. The limit of detection was found to be 0.6 nM, which is lower than many other sensors reported for serotonin in literature. The modified sensor showed high sensitivity (9 nA/nM) and selectivity for serotonin. The proposed method was successfully employed for quantification of serotonin in human blood serum samples.

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Palladium nanoparticle/chitosan-grafted graphene nanocomposites for construction of a glucose biosensor

Cited by 206 publications

References 44 publications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

Nanobioelectroanalysis Based on Carbon/Inorganic Hybrid Nanoarchitectures

MWCNT-Chitosan-ZrO2 Nanocomposite Modified Sensor for Sensitive and Selective Electrochemical Determination of Serotonin

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