Analysis of Catalytic Activity of Gold Nanoparticles Modified by Amino-pillar[5]arene

Functionalized gold nanoparticles (AP5A@AuNPs) were successfully prepared using amino-pillar [5] arene ( AP5 A ) as modifier and stabilizer. The effects of different concentrations of AP5 A on gold nanoparticles were explored, and the AP5A@AuNPs composites were characterized by ultraviolet-visible absorption spectroscopy ( UV-Vis), transmission electron microscopy ( TEM), and infrared spectroscopy (FT-IR). When the molar ratio of AP5A to HAuCl4 was 1 : 10, AP5A@AuNPs had uniform particle size and the best dispersibility. Meanwhile, AP5A@AuNPs were used for the catalytic degradation of three organic dyes including Rhodamine B (RhB), methyl orange (MO) and orange-yellow G ( OG), and the degradation rates of the three dyes reached 99. 42% , 99. 26% and 95. 07% , respectively. The results showed that AP5A@AuNPs exhibited strong catalytic activity in the degradation process of RhB, MO and OG, which was of important reference significance for degradation and treatment of organic dyes.