Preparation of silver/thiol reduced graphene oxide composites for conductive materials

• Main Authors: LAI, CHI-HUAI, 賴祈淮
• Other Authors: CHEN, JYH-HERNG
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/g8rs57

碩士 === 國立臺北科技大學 === 資源工程研究所 === 107 === In recent years, due to the rapid development of the electronics industry, the characteristics of a single material can not meet the progress of the times. In this study, the surface properties and electrical properties of reduced graphene oxide were mainly used to adsorb silver ions after modification with MPTMS, thereby improving the conductivity of reduced graphene oxide. The study is divided into four parts: The first part is the discussion on the modification of graphene oxide. The solvothermal method is used to prepare thiol-graphene oxide. The mechanism of MPTMS on the degree of surface modification and surface reaction of graphene oxide is discussed. The second part is to investigate the effect of thiol-graphene oxide on the adsorption of Ag(I) in silver nitrate at different pH, time, concentration and temperature, and discuss its adsorption mode. The third part is to use L-ascorbic acid as a reducing agent to investigate the change between surface thiol-graphene oxide and silver metal particles before and after silver/thiol-graphene oxide reduction. The fourth part is to discuss the conductivity analysis of silver/thiol-reduced graphene oxide and silver/reduced graphene oxide. The experimental results show that L-ascorbic acid can effectively reduce graphene oxide without destroying the mercaptan structure in MPTMS. In this study, the optimal mass of MPTMS was 5%, and after the adsorption, the surface silver ions were reduced to silver metal particles. After the reduction, the amount of extra silver added could reach 4469 S/cm, so the silver/thiol reduction oxidation was used in this study. Graphene has the potential of conductive materials.