Synthesis of one-dimensional gold nanostructures and the electrochemical application of the nanohybrid containing functionalized graphene oxide for cholesterol biosensing

Nandini, Seetharamaiah; Nalini, Seetharamaiah; Reddy, M. B. Madhusudana; Suresh, G.; Melo, Jose Savio; Niranjana, Pathappa; Sanetuntikul, Jakkid; Shanmugam, Sangaraju

doi:10.1016/j.bioelechem.2016.03.006

Cited by 41 publications

(13 citation statements)

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“…This phenomenon can change the rate of charge transport indicating the diffusion controlled nature of a system. The anodic and cathodic peaks were found to be proportional to the square root of the scan rate, which clearly indicated the occurrence of a diffusion-controlled process (inset plot) [ 23 ].…”

Section: Resultsmentioning

confidence: 99%

A Surfactant Directed Microcrystalline Cellulose/Polyaniline Composite with Enhanced Electrochemical Properties

et al. 2018

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In this study a cationic surfactant, cetyltrimethylammonium bromide (CTAB), was used as a soft template for in situ chemical polymerization of aniline on the surface of microcrystalline cellulose (MCC). The morphology of the wire-like and porous nanostructure of the resulting composite was highly dependent on the MCC and CTAB concentrations. The effect of the MCC and CTAB concentrations on the electrochemical and morphological properties of the polyaniline (PAni) nanocomposite was studied. Cyclic voltammograms of modified PAni/MCC/CTAB electrode displayed a high current response and the effect of scan rate on the current response confirmed a diffusion controlled process on the surface of the electrode that makes it suitable for sensor applications. The overlapping characteristic peaks of pure PAni and MCC caused peak broadening at 3263 cm−1 in the IR spectra of PAni/MCC/CTAB nanocomposite that revealed the interaction between NH of PAni and OH group of MCC via electrostatic interactions. The addition of MCC to PAni through chemical polymerization decreased the thermal stability of composite compared to pure PAni. Lower crystallinity was observed in the XRD diffractogram, with 2 theta values of 22.8, 16.5, and 34.6 for PAni/MCC, confirming the formation of PAni on the MCC surface.

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Section: Resultsmentioning

confidence: 99%

A Surfactant Directed Microcrystalline Cellulose/Polyaniline Composite with Enhanced Electrochemical Properties

et al. 2018

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“…The graphene oxide layer, which has oxide edges, is placed vertically or obliquely between the electrode surface and the active center of the biomarker, without the protein changing its structure (19). Graphene oxide binds biosensor depth to the electrode, Studies have shown that gold graphene nanohybrid biosensor biosensor increases biocompatibility and measurement sensitivity (20). Some of these nanocomposites are described in this review.…”

Section: Graphene-based Nanocomposites In Biosensorsmentioning

confidence: 99%

“…The graphene oxide layer, which has oxide edges, is placed vertically or obliquely between the electrode surface and the active centre of the biomarker ( 18 ). Studies have shown that gold graphene nanohybrid-based biosensor has increased biocompatibility and measurement sensitivity, which can be applied for cholesterol biosensing ( 19 ). Some of these nanocomposites are described in this review.…”

Section: Graphene-based Nanocomposites In Biosensorsmentioning

confidence: 99%

Detection of Microorganisms Using Graphene-Based Nanobiosensors

Pourmadadi

Yazdian

Hojjati

2021

Food Technol. Biotechnol. (Online)

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Having an insight into graphene and graphene derivatives such as graphene oxide, reduced graphene oxide, and graphene quantum dots structures is necessary since it can help scientists to suspect the possible properties and features that using these carbon materials in preparation of a nanocomposite could bring out. In recent years, graphene and its derivatives are attractive with extensive applications in biosensors due to fascinating properties, such as high surface area, optical and magnetic properties, and high elasticity for the detection of microorganisms can be modified with some other materials such as macromolecules, oxide metals, and metals to improve the electrochemical behavior of the biosensor, and also can be modified with some other materials such as macromolecules, oxide metals, and metals to improve the electrochemical behavior of the biosensor. In this review paper, biosensors design strategies based on graphene and its derivatives (graphene-based nanocomposites in biosensors) are introduced. Then their application for the detection of microorganisms including Prions, Viroids, viral and bacterial cells as well as fungi, protozoa, microbial toxins, and even microbial-derived antibiotics are reviewed.

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“…Investigation on anisotropic nano sized gold as an electrochemical detecting framework is yet to be investigated. Few illustrations such as bimetallic Au-Pt nanowires for continuous no enzymatic impedimetric sensing of glucose [2,6], and one dimensional Gold Nanostructure (AuNs) relied upon thiol functionalized Graphene Oxide (GO-SH) for identification of free cholesterol up to a level of 0.2nM within 5 seconds and so on [7], can be referred to.…”

Section: Introductionmentioning

confidence: 99%

Gold Nanopellets a Unique Platform for Electrochemical Ultra-Low Detection of Ochratoxin A

Basu¹

2018

FSN

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Synthesis of one-dimensional gold nanostructures and the electrochemical application of the nanohybrid containing functionalized graphene oxide for cholesterol biosensing

Cited by 41 publications

References 50 publications

A Surfactant Directed Microcrystalline Cellulose/Polyaniline Composite with Enhanced Electrochemical Properties

A Surfactant Directed Microcrystalline Cellulose/Polyaniline Composite with Enhanced Electrochemical Properties

Detection of Microorganisms Using Graphene-Based Nanobiosensors

Gold Nanopellets a Unique Platform for Electrochemical Ultra-Low Detection of Ochratoxin A

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