Silver nanoparticles-β-cyclodextrin-graphene nanocomposites based biosensor for guanine and adenine sensing

Hui, Yuchen; Ma, Xiaoyan; Hou, Xiuzhang; Chen, Fang; Yu, Jie

doi:10.1007/s11581-014-1343-5

Cited by 34 publications

(16 citation statements)

References 49 publications

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“…5 that, the silver nanoparticles are well distributed on the surface of rGO nanosheets. The distributions of silver nanoparticles are homogeneous without aggregation, which confirms the successful synthesis of rGONS-Ag nanocomposites [19][20] .…”

Section: Transmission Electron Microscopy Analysissupporting

confidence: 64%

Silver Nanocomposites Decorated Reduced Graphene Oxide Nanosheets for Electrochemical Sensor Applications

Ramalakshmi¹,

Balavijayalakshmi²

2018

Orient. J. Chem

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Recently, metal nanoparticles incorporated carbon nanostructures have tremendous applications in the field of nanosensor and technologies. In the proposed work, silver nanoparticles (Ag) decorated reduced graphene oxide nanosheets (rGONS) (rGONS-Ag) are synthesized and developed for the sensitive detection of ortho-Nitrophenol (o-NP) using electrochemical techniques. The rGONS-Ag nanocomposites are synthesized through chemical reduction method. The physical and electrochemical behaviour of the synthesized rGONS-Ag nanocomposites are characterized by using Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy dispersive X-ray spectroscopy (EDAX), Transmission electron microscopy (TEM) and Cyclic voltammetry (CV) techniques. The X-ray diffraction analysis reveals the formation of well crystalline silver nanoparticles (AgNp’s) on the surface of rGO nanosheets with the crystallite size of about 22.775 nm. The morphological analysis reveals the formation of well distributed cubic shape AgNp’s on the surface of rGO nanosheets. The rGONS‐Ag nanocomposites modified glassy carbon electrode (GCE) shows the good electrochemical detection performance for ortho-Nitrophenol (o-NP) with the linear detection range from 2 mM to 8 mM and with the sensitivity of about 0.221 mA mM-1 cm-2.

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Section: Transmission Electron Microscopy Analysissupporting

confidence: 64%

Silver Nanocomposites Decorated Reduced Graphene Oxide Nanosheets for Electrochemical Sensor Applications

Ramalakshmi¹,

Balavijayalakshmi²

2018

Orient. J. Chem

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“…The β‐CD modified PdNPs are significantly assembled on rGO surface via electrostatic or hydrogen bond formation . As seen from the previous report, β‐CD functionalized hybrid nanomaterials have shown excellent electrocatalytic activity towards the target molecule due to it's stabilization and guest‐host complex behavior . Inspiring from these literature, we have demonstrated functionalization of rGO with supramolecular (β‐CD) modified PdNPs by facile electrochemical method.…”

Section: Introductionsupporting

confidence: 51%

Functionalization of Reduced Graphene Oxide with β‐cyclodextrin Modified Palladium Nanoparticles for the Detection of Hydrazine in Environmental Water Samples

et al. 2016

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A sensitive and selective hydrazine sensor was developed by β‐cyclodextrin modified palladium nanoparticles decorated reduced graphene oxide (PdNPs‐β‐CD/rGO) nanocomposite. The PdNPs‐β‐CD/rGO hybrid material was prepared by simple electrochemical method. The hydrophobic cavity of β‐CD ineracts with palladium nanoparticles by hydrophobic interaction and further it is uniformly assembled on the rGO surface through hydrogen bond formation, which is clearly confirmed by FT‐IR, FESEM and TEM. The high electrocatalytic activity of hydrazine oxidation was observed at −0.05 V (vs. Ag/AgCl) on PdNPs‐β‐CD/rGO modified electrode; due to the excellent stabilization, high catalytic activity and large surface area of the PdNPs‐β‐CD/rGO composite. The PdNPs‐β‐CD/rGO fabricated hydrazine sensor exhibited an excellent analytical performance, including high sensitivity (1.95 μA μM−1 cm−2), lower detection limit (28 nM) and a wide linear range (0.05 to 1600 μM). We also demonstrated that the PdNPs‐β‐CD/rGO nanocomposite modified electrode is a highly selective and sensitive sensor towards detection of hydrazine among the various interfering species. Hence, the proposed hydrazine sensor is able to determine hydrazine in different water samples.

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“…GR nanocomposites with inorganic nanostructures [ 76 , 77 , 78 , 79 ], conducting polymers [ 80 , 81 , 82 , 83 ] and organic materials [ 84 ] can enhance the analytical response of sensors and biosensors, mainly improving their sensitivity, limit of detection, and reproducibility of electrochemical biosensors for the detection of biomolecules. Functionalized GR/reduced GO (rGO) with a variety of materials, iridium oxide [ 85 ], Au nanostructures [ 86 , 87 , 88 , 89 ], AgNP [ 90 , 91 ], FeNP [ 92 ], PtNPs [ 93 , 94 , 95 , 96 ], Pd–Pt NPs [ 97 , 98 ], TiO 2 NPs [ 99 , 100 ], CuO 2 NPs [ 101 ], ZrO 2 NPs [ 102 ], or CNTs [ 103 ], have been used as electrochemical biosensors for enhancing the electron transfer property between electrode substrates and enzymes.…”

Section: Graphene (Gr) For Electrochemical Biosensorsmentioning

confidence: 99%

Carbon Nanomaterials as Versatile Platforms for Biosensing Applications

et al. 2020

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A biosensor is defined as a measuring system that includes a biological receptor unit with distinctive specificities toward target analytes. Such analytes include a wide range of biological origins such as DNAs of bacteria or viruses, or proteins generated from an immune system of infected or contaminated living organisms. They further include simple molecules such as glucose, ions, and vitamins. One of the major challenges in biosensor development is achieving efficient signal capture of biological recognition-transduction events. Carbon nanomaterials (CNs) are promising candidates to improve the sensitivity of biosensors while attaining low detection limits owing to their capability of immobilizing large quantities of bioreceptor units at a reduced volume, and they can also act as a transduction element. In addition, CNs can be adapted to functionalization and conjugation with organic compounds or metallic nanoparticles; the creation of surface functional groups offers new properties (e.g., physical, chemical, mechanical, electrical, and optical properties) to the nanomaterials. Because of these intriguing features, CNs have been extensively employed in biosensor applications. In particular, carbon nanotubes (CNTs), nanodiamonds, graphene, and fullerenes serve as scaffolds for the immobilization of biomolecules at their surface and are also used as transducers for the conversion of signals associated with the recognition of biological analytes. Herein, we provide a comprehensive review on the synthesis of CNs and their potential application to biosensors. In addition, we discuss the efforts to improve the mechanical and electrical properties of biosensors by combining different CNs.

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Silver nanoparticles-β-cyclodextrin-graphene nanocomposites based biosensor for guanine and adenine sensing

Cited by 34 publications

References 49 publications

Silver Nanocomposites Decorated Reduced Graphene Oxide Nanosheets for Electrochemical Sensor Applications

Silver Nanocomposites Decorated Reduced Graphene Oxide Nanosheets for Electrochemical Sensor Applications

Functionalization of Reduced Graphene Oxide with β‐cyclodextrin Modified Palladium Nanoparticles for the Detection of Hydrazine in Environmental Water Samples

Carbon Nanomaterials as Versatile Platforms for Biosensing Applications

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