Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Potentiometric detection of chemical species by spin-assisted assembly of vanadium pentoxide nanorods

Full text
Author(s):
Vieira, Nirton C. S. [1] ; Avansi, Jr., Waldir [2] ; Figueiredo, Alessandra [1] ; Mastelaro, Valmor R. [3] ; Zucolotto, Valtencir [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Phys Inst Sao Carlos, Nanomed & Nanotoxicol Grp, CP 369, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Phys, UFSCar, BR-13565905 Sao Carlos, SP - Brazil
[3] Univ Sao Paulo, Phys Inst Sao Carlos, Crystal Growth & Ceram Mat, CP 369, BR-13560970 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: SENSORS AND ACTUATORS B-CHEMICAL; v. 229, p. 461-465, JUN 28 2016.
Web of Science Citations: 3
Abstract

Vanadium pentoxide nanorods (V2O5-nanorods) and poly(allylamine hydrochloride) (PAH) were assembled onto gold-coated substrates via spin-assisted assembly technique and used as a chemically sensitive electrodes. PAH/V2O5-nanorods detected H+ ions (pH) with sensitivity between 52-61 mV/pH (close to Nernstian theoretical value). As a proof-of-concept, a urea biosensor has been developed, upon immobilization of urease enzyme on PAH/V2O5-nanorods electrodes. The biosensor could detect urea in a 0.05-5 mM dynamic range. The spin-assisted assembly technique enables the combination of different materials in a simple way and offers advantages for the construction of functional electrodes. (c) 2016 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 11/20110-0 - Field effect-based immunosensors to detect myocardial infarction markers
Grantee:Nirton Cristi Silva Vieira
Support type: Scholarships in Brazil - Post-Doctorate