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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Titanate nanofibers sensitized with nanocrystalline Bi2S3 as new electrocatalytic materials for ascorbic acid sensor applications

Participants in the publication
J.F. Cabrita (Author)
Virginia C Ferreira (Author)
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
 Dep. Química e Bioquímica
 Dep. Química e Bioquímica
 CQB
 O.C. Monteiro (Author)
CQB
Summary
tHere is described a new method for titanate nanofibers (TNF) modification with nanocrystalline semi-conducting bismuth sulphide (Bi2S3) nanoparticles in order to obtain new materials with innovativeelectrocatalytic properties. The TNF surface modification was achieved by in situ nucleation and growthof nanocrystalline metal sulphide particles through a single-source approach. Using bismuth diethyl-dithiocarbamate complex as the metal chalcogenide precursor, nanocrystalline of Bi2S3particles wereobtained over the TNF surface. The prepared materials were characterized and the results evidence thata thin layer of crystalline Bi2S3nanosheets is covering the TNF’ entire surface. After immobilization on aglassy carbon electrode, the nanocomposite structured surface was electrochemically characterized. Theability of the modified electrodes for sensor applications was tested towards the electrocatalysis for theascorbic acid oxidation reaction. The results obtained indicate that these are very interesting materials tobe used for sensing at pH 7, displaying a vitamin C linear response in the 1–10 mM concentration range.

Date of Submisson/Request
2013-12-20
Date of Acceptance
2014-04-23
Date of Publication
2014-05-02

Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
Electrochimica Acta

Publication Identifiers
ISSN - 0013-4686

Publisher
Elsevier BV

Volume
135

Number of pages
6
Starting page
121
Last page
127

Document Identifiers
DOI - https://doi.org/10.1016/j.electacta.2014.04.135
URL - http://dx.doi.org/10.1016/j.electacta.2014.04.135

Rankings
SCIMAGO Q1 (2016) - 1.355 - Electrochemistry
SCOPUS Q1 (2013) - 1.435 - Electrochemistry
Web Of Science Q1 (2017) - 5.116 - ELECTROCHEMISTRY - SCIE

Keywords
Titanate nanofibers Nanocrystalline Bi2S3 Electroactive nanocomposites Ascorbic acid oxidation Electrochemical sensors

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APA
J.F. Cabrita, Virginia C Ferreira, O.C. Monteiro, (2014). Titanate nanofibers sensitized with nanocrystalline Bi2S3 as new electrocatalytic materials for ascorbic acid sensor applications. Electrochimica Acta, 135, 121-127. ISSN 0013-4686. eISSN . http://dx.doi.org/10.1016/j.electacta.2014.04.135

IEEE
J.F. Cabrita, Virginia C Ferreira, O.C. Monteiro, "Titanate nanofibers sensitized with nanocrystalline Bi2S3 as new electrocatalytic materials for ascorbic acid sensor applications" in Electrochimica Acta, vol. 135, pp. 121-127, 2014. 10.1016/j.electacta.2014.04.135

BIBTEX
@article{40911, author = {J.F. Cabrita and Virginia C Ferreira and O.C. Monteiro}, title = {Titanate nanofibers sensitized with nanocrystalline Bi2S3 as new electrocatalytic materials for ascorbic acid sensor applications}, journal = {Electrochimica Acta}, year = 2014, pages = {121-127}, volume = 135 }