Synthesis and applications of nitroxide radical polymer brushes grafted onto silica nanoparticles and Fe3O4@SiO2 core-shell nanoparticles

• Main Authors: Jian-jhe Yang, 楊建哲
• Other Authors: Jyh-tsung Lee
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/88968600508672208541

碩士 === 國立中山大學 === 化學系研究所 === 100 === Nitroxide radical groups grafted on silica have been synthesized. The catalytic oxidation of alcohols to aldehydes and ketones using the nitroxide radical groups as a catalyst was also investigated. The results of scanning electron microscopy, infrared spectroscopy, and X-ray photoelectron spectroscopy confirmed that the nitroxide radical groups are successfully grafted onto silica. The yield of the catalytic oxidation using the catalysts is higher than 99%. The catalysts are easily recovered. Furthermore, the reused catalysts still keep high performance in the catalytic oxidation.