FABRICATION OF CARBON NANOTUBES AND GOLD NANOPARTICLES BASED ELECTROCHEMICAL SENSOR FOR THE DETECTION OF ANTIBIOTIC RESIDUES IN MILK
We are into the large scale synthesis of nanocomposites of Carbon nanotubes and gold nanoparticles (CNTs/AuNPs) by electroless deposition process, this work is based on the fact that CNTs have remarkable properties which include; excellent electrical and thermal conductivity and small size with large surface area which gave them greater advantage for use in electrochemical analyses, the large surface area of CNTs allowed an increase binding site for analytes detection whenever used as surface modifiers of an electrode. Nanocomposites of CNT and metal nanoparticles (NPs) can lead to nanohybrids that have the potentials of enhancing the performance of an electrochemical sensor. Gold nanoparticles (AuNPs) have attracted greater interest in the synthesis of nanocomposites due to its quantized charging/discharging characteristics, electrocatalytic properties, its good stability and biocompatibility which leads to higher electrochemical sensing capabilities. The effect ofHAuCl4 concentration on thedensity and distribution of AuNPs on the surface of CNTs is also being studied, the electrochemical characteristics of the synthesized nanocomposites will be testedand then use to fabricate the needed electrochemical sensor for the detection of antibiotic residues in milk sample.
Schematic representation of the preparation procedure for the synthesis of the nanocomposites