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

Characterization of graphite-polyurethane composite electrodes modified with organofunctionalized SBA-15 nanostructured silica in the presence of heavy metal ions. Application to anodic stripping voltammetry

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Author(s):
Cesarino, Ivana [1] ; Cavalheiro, Eder T. G. [1] ; Brett, Christopher M. A. [2]
Total Authors: 3
Affiliation:
[1] Inst Quim Sao Carlos, Dept Quim & Fis Mol, BR-13566590 Sao Paulo - Brazil
[2] Univ Coimbra, Fac Ciencias & Tecnol, Dept Quim, P-3004535 Coimbra - Portugal
Total Affiliations: 2
Document type: Journal article
Source: Microchimica Acta; v. 171, n. 1-2, p. 1-9, OCT 2010.
Web of Science Citations: 10
Abstract

A graphite-polyurethane composite electrode with Santa Barbara Amorphous 15, SBA-15, mesoporous silica organofunctionalized with 2-benzothiazolethiol (BTSBA) as bulk modifier has been characterized electrochemically by voltammetry and electrochemical impedance spectroscopy (EIS) in the presence of cadmium ions, as an example of a toxic trace heavy metal, as well as by solid-state (13)C-NMR and by scanning electron microscopy. EIS measurements performed on the modified composite electrodes to investigate the influence of BTSBA on the deposition of cadmium during square wave anodic stripping voltammetry showed that organofunctionalization of the SBA-15 bulk modifier in the composite electrode facilitates heavy metal deposition. Experiments were also carried out with a mixture of submicromolar cadmium, lead, copper and mercury ions and led to similar conclusions. (AU)

FAPESP's process: 08/03537-7 - Development and application of composite electrodes based on graphite-poliurethane and graphite-silicone rubber-III: modification with carbon nanotubes and molecularly imprinted polymers
Grantee:Éder Tadeu Gomes Cavalheiro
Support Opportunities: Regular Research Grants