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Ion-sensing properties of 1D vanadium pentoxide nanostructures.

Vieira NC, Avansi W, Figueiredo A, Ribeiro C, Mastelaro VR, Guimarães FE - Nanoscale Res Lett (2012)

Bottom Line: The application of one-dimensional (1D) V2O5·nH2O nanostructures as pH sensing material was evaluated. 1D V2O5·nH2O nanostructures were obtained by a hydrothermal method with systematic control of morphology forming different nanostructures: nanoribbons, nanowires and nanorods.Deposited onto Au-covered substrates, 1D V2O5·nH2O nanostructures were employed as gate material in pH sensors based on separative extended gate FET as an alternative to provide FET isolation from the chemical environment. 1D V2O5·nH2O nanostructures showed pH sensitivity around the expected theoretical value.Due to high pH sensing properties, flexibility and low cost, further applications of 1D V2O5·nH2O nanostructures comprise enzyme FET-based biosensors using immobilized enzymes.

View Article: PubMed Central - HTML - PubMed

Affiliation: Departamento de Física e Ciências dos Materiais, Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, São Carlos, São Paulo, CP 369/13560-970, Brazil. nirton@ursa.ifsc.usp.br.

ABSTRACT
The application of one-dimensional (1D) V2O5·nH2O nanostructures as pH sensing material was evaluated. 1D V2O5·nH2O nanostructures were obtained by a hydrothermal method with systematic control of morphology forming different nanostructures: nanoribbons, nanowires and nanorods. Deposited onto Au-covered substrates, 1D V2O5·nH2O nanostructures were employed as gate material in pH sensors based on separative extended gate FET as an alternative to provide FET isolation from the chemical environment. 1D V2O5·nH2O nanostructures showed pH sensitivity around the expected theoretical value. Due to high pH sensing properties, flexibility and low cost, further applications of 1D V2O5·nH2O nanostructures comprise enzyme FET-based biosensors using immobilized enzymes.

No MeSH data available.


XRD diffractograms of the samples synthesized by the hydrothermal route. (a) Nanoribbon at 160°C, (b) nanowire at 180°C and (c) nanorod at 200°C.
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Figure 2: XRD diffractograms of the samples synthesized by the hydrothermal route. (a) Nanoribbon at 160°C, (b) nanowire at 180°C and (c) nanorod at 200°C.

Mentions: The diffractograms in Figure 2 confirm the expected crystalline phase in all the samples under study, i.e., monoclinic phase in the samples synthesized at 160°C and orthorhombic phase in those synthesized at 180°C and 200°C [20].


Ion-sensing properties of 1D vanadium pentoxide nanostructures.

Vieira NC, Avansi W, Figueiredo A, Ribeiro C, Mastelaro VR, Guimarães FE - Nanoscale Res Lett (2012)

XRD diffractograms of the samples synthesized by the hydrothermal route. (a) Nanoribbon at 160°C, (b) nanowire at 180°C and (c) nanorod at 200°C.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3475107&req=5

Figure 2: XRD diffractograms of the samples synthesized by the hydrothermal route. (a) Nanoribbon at 160°C, (b) nanowire at 180°C and (c) nanorod at 200°C.
Mentions: The diffractograms in Figure 2 confirm the expected crystalline phase in all the samples under study, i.e., monoclinic phase in the samples synthesized at 160°C and orthorhombic phase in those synthesized at 180°C and 200°C [20].

Bottom Line: The application of one-dimensional (1D) V2O5·nH2O nanostructures as pH sensing material was evaluated. 1D V2O5·nH2O nanostructures were obtained by a hydrothermal method with systematic control of morphology forming different nanostructures: nanoribbons, nanowires and nanorods.Deposited onto Au-covered substrates, 1D V2O5·nH2O nanostructures were employed as gate material in pH sensors based on separative extended gate FET as an alternative to provide FET isolation from the chemical environment. 1D V2O5·nH2O nanostructures showed pH sensitivity around the expected theoretical value.Due to high pH sensing properties, flexibility and low cost, further applications of 1D V2O5·nH2O nanostructures comprise enzyme FET-based biosensors using immobilized enzymes.

View Article: PubMed Central - HTML - PubMed

Affiliation: Departamento de Física e Ciências dos Materiais, Instituto de Física de São Carlos, Universidade de São Paulo, Avenida Trabalhador São-carlense 400, São Carlos, São Paulo, CP 369/13560-970, Brazil. nirton@ursa.ifsc.usp.br.

ABSTRACT
The application of one-dimensional (1D) V2O5·nH2O nanostructures as pH sensing material was evaluated. 1D V2O5·nH2O nanostructures were obtained by a hydrothermal method with systematic control of morphology forming different nanostructures: nanoribbons, nanowires and nanorods. Deposited onto Au-covered substrates, 1D V2O5·nH2O nanostructures were employed as gate material in pH sensors based on separative extended gate FET as an alternative to provide FET isolation from the chemical environment. 1D V2O5·nH2O nanostructures showed pH sensitivity around the expected theoretical value. Due to high pH sensing properties, flexibility and low cost, further applications of 1D V2O5·nH2O nanostructures comprise enzyme FET-based biosensors using immobilized enzymes.

No MeSH data available.