Carbon nanotubes modified with antimony nanoparticles in a paraffin composite electrode: simultaneous determination of sulfamethoxazole and trimethoprim
| Autor: | Vivian Cesarino, Marcos R.V. Lanza, Ivana Cesarino |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Scanning electron microscope Analytical chemistry Nanoparticle chemistry.chemical_element Carbon nanotube urologic and male genital diseases Electrochemistry law.invention Antimony law Materials Chemistry Electrical and Electronic Engineering Instrumentation Nanocomposite Metals and Alloys bacterial infections and mycoses Condensed Matter Physics ANTIBIÓTICOS female genital diseases and pregnancy complications Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Differential pulse voltammetry Cyclic voltammetry Nuclear chemistry |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | A new sensor has been developed for the simultaneous detection of sulfamethoxazole (SMX) and trimethoprim (TMP) using differential pulse voltammetry at a paraffin composite electrode based on multi-walled carbon nanotubes (MWCNT) modified with antimony nanoparticles (SbNPs). The morphology of the MWCNT-SbNPs nanocomposite and the electrochemical performance of the composite electrode were characterised by field emission gun scanning electron microscopy and cyclic voltammetry, respectively. The synergistic effect of the carbon nanotubes and the SbNPs yielded LOD of 24 nmol L −1 (6.1 μg L −1 ) for SMX and 31 nmol L −1 (9.0 μg L −1 ) for TMP. Additionally, the simultaneous determination of SMX and TMP in natural water was achieved. |
| Databáze: | OpenAIRE |
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