Towards development of chemosensors and biosensors with metal-oxide-based nanowires or nanotubes

Liu, Aihua

doi:10.1016/j.bios.2008.04.014

Cited by 168 publications

(60 citation statements)

References 88 publications

(105 reference statements)

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“…New analytical devices based on MNPPFs are cost-effective, highly sensitive due to the large surface-tovolume ratio of the nanostructure, and additionally show excellent selectivity when coupled to bio-recognition molecules with simple design (Liu, 2008). Because MNPs acts like electron connector, while polymer as selective adsorptive on electrode for target analyte, akin to beauty nature of MNPPF working as efficient device for electrochemical biosensor electrode (Ozcan et al, 2008).…”

Section: Electrochemical Biosensing Based On Mnppfsmentioning

confidence: 99%

Polymer thin films embedded with metal nanoparticles for electrochemical biosensors applications

Prakash

Chakrabarty

Singh

et al. 2013

Biosensors and Bioelectronics

182

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Section: Electrochemical Biosensing Based On Mnppfsmentioning

confidence: 99%

Polymer thin films embedded with metal nanoparticles for electrochemical biosensors applications

Prakash

Chakrabarty

Singh

et al. 2013

Biosensors and Bioelectronics

182

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“…The biocompatibility, excellent electro-catalytic activities, and fast electron transfer kinetics accompanied with a high surface area to volume ratio; are properties of metal oxide nanostructures that gave a potential for their use in sensing [11][12][13]. Further, metal oxide nanostructures based sensor detection can effectively be improved by the physical or a chemical modification of electrode surface.…”

Section: Introductionmentioning

confidence: 99%

Dopamine wide range detection sensor based on modified Co3O4 nanowires electrode

Elhag

Ibupoto

Liu

et al. 2014

Sensors and Actuators B: Chemical

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Ultra-thin cobalt oxide (Co3O4) nanowires grown on gold coated glass substrates by the hydrothermal chemical deposition and have been used as a wide range dopamine potentiometric sensor. An anionic surfactant (sodium dodecylbenzenesulfonate) was used to achieve assisted growth procedure. Moreover, a polymeric membrane containing polyvinyl chloride as plasticized polymer, β-cyclodextrin as ionophore, and potassium tetrakis (4-chlorophenyl) borate as ionic additive were immobilized on the Co3O4 nanostructures through electrostatic adsorption method. X-ray diffraction, x-ray photoelectron spectroscopy, and scanning electron microscopy were used to characterize the electrodes while ultravioletvisible absorption was used to investigate the band gap of the Co3O4 nanostructures. The structural characterization showed a cubic crystalline, pure phase, and nanowires morphology of the Co3O4. However, the morphology is altered when the surfactant concentration has been changed. The Co3O4 chemical modified electrodes were used in potentiometric measurements for dopamine in a 10 −2 M acetic acid/sodium acetate solution having a pH of 5.45. For dopamine range from 10 -9 M to 10 -2 M, the potential response of the sensor electrode was linear with a slope of 52mV/decade. The wide range and high sensitivity of the modified Co3O4 nanowires based sensor for dopamine is attributed to the defects on the metal oxide that is dictated by the used surfactant along with the high surface area-to-volume ratio.

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“…The silanol group and the phosphoric acid group also have high affinity to create covalent bond to the oxide surface (Fig. 2) [35][36][37]. Certainly, properties of the modified surface depend on the functional group of SAM layers, such as selectivity to H + ions with amine terminated SAMs.…”

Section: Functionalization Of Nanomaterialsmentioning

confidence: 99%

One-dimensional Nanomaterials for Field Effect Transistor (FET) Type Biosensor Applications

Lee¹,

Lucero²,

Kim³

2012

Transactions on Electrical and Electronic Materials

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One-dimensional, nanomaterial field effect transistors (FET) are promising sensors for bio-molecule detection applications. In this paper, we review fabrication and characteristics of 1-D nanomaterial FET type biosensors. Materials such as single wall carbon nanotubes, Si nanowires, metal oxide nanowires and nanotubes, and conducting polymer nanowires have been widely investigated for biosensors, because of their high sensitivity to bio-substances, with some capable of detecting a single biomolecule. In particular, we focus on three important aspects of biosensors: alignment of nanomaterials for biosensors, surface modification of the nanostructures, and electrical detection mechanism of the 1-D nanomaterial sensors.

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Towards development of chemosensors and biosensors with metal-oxide-based nanowires or nanotubes

Cited by 168 publications

References 88 publications

Polymer thin films embedded with metal nanoparticles for electrochemical biosensors applications

Polymer thin films embedded with metal nanoparticles for electrochemical biosensors applications

Dopamine wide range detection sensor based on modified Co3O4 nanowires electrode

One-dimensional Nanomaterials for Field Effect Transistor (FET) Type Biosensor Applications

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