CHEMICAL SYNTHESIS OF GOLD NANOPARTICLES USING FLUOROQUINOLONE AND THEIR CHARACTERIZATIONS

The authors report synthesis of water-soluble gold nanoparticles (Au-NP), having an average diameter of ca. 20 nm, by reducing AuCl3 using ciprofloxacin (CF) as a reducing/stabilizing agent. The synthesized Au-NPs have been characterized by scanning electron microscopy (SEM), EDS, TEM, UV-visible sp...

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Bibliographic Details
Published inNanotechnology Research Journal Vol. 6; no. 2/3; p. 213
Main Authors Kumar, S Ashok, Wang, Sea-Fue, Chang, Yu-Tsern
Format Journal Article
LanguageEnglish
Published Hauppauge Nova Science Publishers, Inc 01.04.2013
Subjects
Acids
Aqueous solutions
Catalysis
Electrodes
Gold
Nanoparticles
Potassium
Studies
Voltammetry
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Summary:The authors report synthesis of water-soluble gold nanoparticles (Au-NP), having an average diameter of ca. 20 nm, by reducing AuCl3 using ciprofloxacin (CF) as a reducing/stabilizing agent. The synthesized Au-NPs have been characterized by scanning electron microscopy (SEM), EDS, TEM, UV-visible spectroscopy, X-ray diffraction and cyclic voltammetry. TEM and SEM combined with EDS confirmed that spherical shaped Au-NPs were formed. Uv-vis spectra of Au-NPs show two absorption bands, corresponding to the capping agent ciprofloxacin and surface plasmon absorption bands at 274 nm and 535 nm, respectively. The Au-NPs are used to modify a glassy carbon electrode (GCE) and it's electrochemical and electrocatalytic properties are investigated. The Au-NPs show excellent electrocatalytic activity toward the oxidation of methanol at +0.33 V in alkaline solution, which was not observed on unmodified GCE. Further, Au- NPs modified electrode showed excellent electrocatalytic properties for reduction of oxygen at lower potential. Here, CF was used as a reducing agent to synthesis of Au-NPs.