A novel synthesis approach of nanoparticles by amino acids

• Main Authors: Cheng-sheng Wu, 吳承軒
• Other Authors: Ching-Chich Leu
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/44949337082221214493

碩士 === 國立高雄大學 === 化學工程及材料工程學系碩士班 === 100 === Monodispersed colloidal particles have attracted much attention not only for their scientific interest but also for many technological applications. However, many kinds of toxic chemicals or solvents are usually involved in the particle preparation process. Amino acid is an essential in the body so non-toxic and harmless to the environment or human. Recently, anionic surfactants derived from diverse amino acids have been applied to the synthesis of nanosized materials. These accomplishments have inspired us to use amino acids in preparing materials unique in structure. In this work, we used lysine to assist the synthesis of nanoparticles. The synthesis and the assembly property of nanoparticles were investigated. The experimental process of low complexity, and in pure water phase with no organic solvents participated, is consistent with the currently popular green chemistry. The resulting nanoparticles were characterized via UV-Vis Spectrometer, and Scanning Electron Microscopy. The critical roles of lysine in the formation of nanoparticles were investigated on the basis of experimental results. The influences of the concentration of lysine, solution pH value, temperature, and stirring speed on particle size and size distribution are discussed. By employing such an appropriate reduction method and process condition, we can make nanoparticles process simplification, non-polluting and has a good size distribution and stability, with the value on the practical application.