A new strategy for simultaneous determination of 4-aminophenol, uric acid and nitrite based on a graphene/hydroxyapatite composite modified glassy carbon electrode

Lavanya, N.; Sudhan, Narayanan; Kanchana, P.; Radhakrishnan, Shankar; Sekar, C.

doi:10.1039/c5ra06763d

Cited by 24 publications

(10 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In their study, the fabricated GNs-HA modified glassy carbon electrode (GCE) exhibited excellent electrocatalytic activity in the redox process of luteolin compared with GNs-GCE electrode, attributing to the enhanced electron transfer and electrocatalysis toward luteolin. In another case, an electrochemical sensor based on GO-HA composites-modified GCE was fabricated for simultaneous determination of 4-aminophenol (4-AP), uric acid (UA), and nitrite ions (NO 2− ) by cyclic voltammetry (CV) and square wave voltammetry measurements [89]. They found that the formed GO-HA nanocomposite exhibited synergistic effects with high sensitivity, low detection limits, good stability, and high reproducibility.…”

Section: Biomedical Applicationsmentioning

confidence: 99%

Biomimetic Hydroxyapatite on Graphene Supports for Biomedical Applications: A Review

Wei

Gong

et al. 2019

Nanomaterials

View full text Add to dashboard Cite

Hydroxyapatite (HA) has been widely used in fields of materials science, tissue engineering, biomedicine, energy and environmental science, and analytical science due to its simple preparation, low-cost, and high biocompatibility. To overcome the weak mechanical properties of pure HA, various reinforcing materials were incorporated with HA to form high-performance composite materials. Due to the unique structural, biological, electrical, mechanical, thermal, and optical properties, graphene has exhibited great potentials for supporting the biomimetic synthesis of HA. In this review, we present recent advance in the biomimetic synthesis of HA on graphene supports for biomedical applications. More focuses on the biomimetic synthesis methods of HA and HA on graphene supports, as well as the biomedical applications of biomimetic graphene-HA nanohybrids in drug delivery, cell growth, bone regeneration, biosensors, and antibacterial test are performed. We believe that this review is state-of-the-art, and it will be valuable for readers to understand the biomimetic synthesis mechanisms of HA and other bioactive minerals, at the same time it can inspire the design and synthesis of graphene-based novel nanomaterials for advanced applications.

show abstract

Section: Biomedical Applicationsmentioning

confidence: 99%

Biomimetic Hydroxyapatite on Graphene Supports for Biomedical Applications: A Review

Wei

Gong

et al. 2019

Nanomaterials

View full text Add to dashboard Cite

show abstract

“… The number of publications on Graphene-based HA composites from year 2009–2016 (2009 [ 16 ], 2011 [ [17] , [18] , [19] ], 2012 [ [20] , [21] , [22] , [23] , [24] ], 2013 [ [25] , [26] , [27] , [28] , [29] , [30] , [31] , [32] ], 2014 [ [33] , [34] , [35] , [36] , [37] , [38] , [39] , [40] , [41] , [42] , [43] , [44] , [45] , [46] , [47] , [48] , [49] ], 2015 [ [50] , [51] , [52] , [53] , [54] , [55] , [56] , [57] , [58] , [59] , [60] , [61] , [62] , [63] , [64] , [65] , [66] , [67] , [68] , [69] , [70] , [71] , [72] , [73] , [74] , [75] , [76] , [77] ...…”

Section: Introductionunclassified

An overview of graphene-based hydroxyapatite composites for orthopedic applications

Xiong

Yan

et al. 2018

Bioactive Materials

191

122

View full text Add to dashboard Cite

Hydroxyapatite (HA) is an attractive bioceramic for hard tissue repair and regeneration due to its physicochemical similarities to natural apatite. However, its low fracture toughness, poor tensile strength and weak wear resistance become major obstacles for potential clinical applications. One promising method to tackle with these problems is exploiting graphene and its derivatives (graphene oxide and reduced graphene oxide) as nanoscale reinforcement fillers to fabricate graphene-based hydroxyapatite composites in the form of powders, coatings and scaffolds. The last few years witnessed increasing numbers of studies on the preparation, mechanical and biological evaluations of these novel materials. Herein, various preparation techniques, mechanical behaviors and toughen mechanism, the in vitro/in vivo biocompatible analysis, antibacterial properties of the graphene-based HA composites are presented in this review.

show abstract

“…It can produce methaemoglobin, responsible for the anemic condition, nitrite reacts with various amines and amides to form N-nitrosamines which cause stomach cancer. [7] Researchers in recent years have focused on the development of new techniques such as ion chromatography, gas chromatography, HPLC, chemiluminescence, capillary electrophoresis, spectrophotometric, mass spectrophotometric, and electrochemical methods. [8] Among the above methods, comprehensive attention has been paid to the electrochemical methods due to their quick response, easy and controlled operation, high sensitivity, and extremely high selectivity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Metal‐Free Nanoporous Carbon with Few‐Layer Graphene Electrocatalyst for Electrochemical NO₂⁻ Oxidation

et al. 2021

View full text Add to dashboard Cite

Herein, electrochemical oxidation of nitrite (NO 2 À ) is demonstrated using metal-free and electrochemically highly stable nanoporous carbon (NC) system. The surface features of nanoporous carbon were studied using both spectroscopic and microscopic techniques including scanning electron microscope (SEM), transmission electron microscope (TEM) and is having layered mesh-like features with a particle size of ∼ 20 to ∼ 100 nm. The as-synthesized electrocatalyst is found to be more active towards electrooxidation of nitrite (NO 2 À ) at considerably low onset potential of 0.58 V vs SCE with a significantly high current density of 5.2 μA/cm 2 determined from linear sweep voltammetry (LSV), and cyclic voltammetry (CV) studies. The concentration and scan rate dependent studies confirm the nitrite oxidation is diffusion-controlled process. The interfacial electron transfer features and parameters involved are determined by electrochemical impedance spectroscopic (EIS) studies. Moreover, current stability at a nitrite oxidation (0.58 V vs SCE) potential is also tested by chronoamperometric (i-t) measurements and it demonstrates nanoporous carbon is having long term electrochemical stability. These studies establish the metal-free nanoporous carbon as an efficient electrocatalyst for nitrite oxidation and will be good futuristic electrode material for other energy and environmental based electrochemical monitoring studies.

show abstract

A new strategy for simultaneous determination of 4-aminophenol, uric acid and nitrite based on a graphene/hydroxyapatite composite modified glassy carbon electrode

Abstract: A novel electrochemical sensor has been fabricated based on a graphene/hydroxyapatite composite modified GCE for the selective and simultaneous detection of 4-aminophenol, uric acid and nitrite ions (NO2−) by voltammetric method for the first time.

Cited by 24 publications

References 26 publications

Biomimetic Hydroxyapatite on Graphene Supports for Biomedical Applications: A Review

Biomimetic Hydroxyapatite on Graphene Supports for Biomedical Applications: A Review

An overview of graphene-based hydroxyapatite composites for orthopedic applications

Synthesis of Metal‐Free Nanoporous Carbon with Few‐Layer Graphene Electrocatalyst for Electrochemical NO₂⁻ Oxidation

Contact Info

Product

Resources

About

A new strategy for simultaneous determination of 4-aminophenol, uric acid and nitrite based on a graphene/hydroxyapatite composite modified glassy carbon electrode

Abstract: A novel electrochemical sensor has been fabricated based on a graphene/hydroxyapatite composite modified GCE for the selective and simultaneous detection of 4-aminophenol, uric acid and nitrite ions (NO2−) by voltammetric method for the first time.

Cited by 24 publications

References 26 publications

Biomimetic Hydroxyapatite on Graphene Supports for Biomedical Applications: A Review

Biomimetic Hydroxyapatite on Graphene Supports for Biomedical Applications: A Review

An overview of graphene-based hydroxyapatite composites for orthopedic applications

Synthesis of Metal‐Free Nanoporous Carbon with Few‐Layer Graphene Electrocatalyst for Electrochemical NO2− Oxidation

Contact Info

Product

Resources

About

Synthesis of Metal‐Free Nanoporous Carbon with Few‐Layer Graphene Electrocatalyst for Electrochemical NO₂⁻ Oxidation