Previous studies have shown the formation of gold nanoparticles via various synthetic methods. Each method creates particles with unique sizes, colors, and characteristics. Other studies have solely focused on the characterization of these particles. This project seeks to investigate different synthesis and characterization procedures. The first experiment consisted of the citrate reduction of HAuCl4 to create colloidal red gold which was characterized with UV-vis and Raman spectroscopies. The second experiment was the synthesis of thiolderivatized gold nanoparticles, in which gold was surrounded by thiol to create a colloid which was filtered and characterized using X-ray photoelectron spectroscopy (XPS).
Jeffrey Welder, ’07 West Des Moines, IA
Majors: Biochemistry and Molecular Biology, Philosophy
Sponsor: Craig Teague