title: Synthesis of stabilizer-free gold nanoparticles by pulse sonoelectrochemical method.
abstract: In this paper, stabilizer-free gold nanoparticles (Au NPs) were synthesized by a facile pulse sonoelectrochemical method in the absence of stabilizer. The size and shape of the Au NPs can be controlled by adjusting current density, reaction time and the pH value of the precursor solution. The morphology and structure of the Au NPs were characterized by transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), UV-visible spectra (UV-vis), energy-dispersive X-ray (EDX) and X-ray diffraction (XRD). The pH value has a great effect on the size and dispersion of the obtained Au NPs. The Au NPs could further used as substrate for fabrication of HRP biosensor which exhibited excellent biocatalytical activity with high sensitivity and rapid response. This method provides a facile route for the synthesis of stabilizer-free Au NPs. Since the preparation process do not need the addition of any surfactants/capping agent, the resulting Au NPs are suitable for the applications in fields of biology and catalysis.
authors.affiliation: School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry (MOE), Nanjing University, Nanjing 210093, People's Republic of China.
authors.forename: Qingming
authors.initials: Q
authors.lastname: Shen
authors.forename: Qianhao
authors.initials: Q
authors.lastname: Min
authors.forename: Jianjun
authors.initials: J
authors.lastname: Shi
authors.forename: Liping
authors.initials: L
authors.lastname: Jiang
authors.forename: Wenhua
authors.initials: W
authors.lastname: Hou
authors.forename: Jun-Jie
authors.initials: JJ
authors.lastname: Zhu
mesh_terms: D055664:Electrochemical Techniques; D006046:Gold / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D053768:Metal Nanoparticles / Q000737:chemistry*; D014465:Ultrasonics
chemical_list: D006046:Gold