Synthesis and characterization of gold nanoparticles supported on zinc oxide via the deposition-precipitation method

Authors : Hanani YAZID, Rohana ADNAN, Shafida Abdul HAMID, Muhammad Akhyar FARRUKH

Pages : 639-650

View : 19 | Download : 11

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Gold nanoparticles supported on zinc oxide nanoparticles were synthesized at several pH levels via the deposition-precipitation insert ignore into journalissuearticles values(DP); method. The effects of pH on gold loading, particle size, and particle size distribution on the support were studied at the iso-electric point insert ignore into journalissuearticles values(IEP); as well as below and above the IEP of ZnO. The addition of the support significantly changed the pH of the solution. The effects of adjusting the pH before and after the addition of the support into the gold chloride solution were also investigated. Gold particles with diameters of less than 5 nm were obtained. The results revealed that gold loading depends on the pH, while gold particle size and distribution are independent of pH adjustment. Structural and elemental characterizations of the gold nanorods were carried out using X-ray diffraction insert ignore into journalissuearticles values(XRD);, transmission electron microscopy insert ignore into journalissuearticles values(TEM);, scanning electron microscopy insert ignore into journalissuearticles values(SEM);, energy-dispersive X-rays insert ignore into journalissuearticles values(EDX);, atomic absorption spectrometry insert ignore into journalissuearticles values(AAS);, and ultraviolet-visible spectrophotometry insert ignore into journalissuearticles values(UV-Vis);.
Keywords : Au nanoparticles, ZnO nanorods, deposition precipitation, electron microscopy, X ray diffraction