This discussion focuses on determining the metal weight percent of gold nanoparticles coated with organic thin films using Thermal Gravimetric Analysis (TGA). The process involves combusting organic substances at high temperatures, specifically around 1500 degrees Celsius, to isolate the inorganic components. After combustion, washing the residue with polar organic solvents such as acetic acid, acetonitrile, and dimethyl formamide is essential for accurate measurement. The gold nanoparticles, which are of high purity, can be weighed directly or dissolved in Aqua Regia (3HCl + 1HNO3) for further analysis.
PREREQUISITESThis discussion is beneficial for chemists, materials scientists, and researchers involved in nanoparticle synthesis and characterization, particularly those focusing on gold nanoparticles and their analysis through thermal methods.