Gold Nanoparticles Immobilized on Zinc Oxide Nanoparticles for Photodegradation and SERS Detection of Water Pollutants

• Main Author: SAPTO WIJANARKO RUSTAMADI
• Other Authors: MING-CHIEN YANG
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/nn6442

碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 106 === Zinc oxide nanoparticles (ZnO NPs) were successfully synthesized by hydro thermal methods and then annealing at varied temperature (200, 300, 400, 500, 600 and 700oC). Furthermore, gold nanoparticles (Au NPs) were immobilized on the dimercaptosuccinic acid (DMSA) modified ZnO NPs (Au-ZnO NPs) for the photodegradation and surface enhanced Raman scattering (SERS) detection of the water pollutants, such as methylene blue. The effects of the particle size of ZnO NPs at varied annealing temperatures were investigated. The morphology of ZnO NPs and Au NPs were evaluated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It showed that ZnO NPs were spherical in shape with the diameter about 50 nm and Au NPs were spherical in shape with diameter about 10 nm. The optical properties of the ZnO NPs were characterized by UV-visible spectroscopy. XRD results revealed that the ZnO NPs are highly crystalline, showing the hexagonal wurtzite crystal structure. Au-ZnO NPs displays great characterizations in the photodegradation and SERS detection, which is potential to apply in the field of biomedical and water treatments and rapid detection.