Electrochemical Studies of Carbon Based Nanocomposite Materials Modified Electrodes for Electroanalytical Applications

• Main Authors: Pin-Chun YEH, 葉品君
• Other Authors: 陳生明
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/vpm34r

碩士 === 國立臺北科技大學 === 化學工程研究所 === 101 === Carbon materials such as multiwalled carbon nanotubes and graphene shows promising sensing materials in electrochemical sensors and biosensors, which have the characteristics of low weight of extraordinary mechanical, electrical, thermal and multifunctional properties. The size scale, aspect ratio and properties of these materials provide advantages in various aspects of sensor functionalities. However, electrochemical sensor platforms will require significant improvements in sensitivity, specificity and parallelism to meet the future needs in variety of fields. In order to meet these above said requirements, electrodes made of various composite materials containing chemically reduced graphene oxide (CRGO), functionalized multiwalled carbon nanotubes (f-MWCNTs) and amine group functionalized carbon nano tubes (AFCNT) have been successfully studied and studied for real time sensor applications. The studies show that the above used carbon materials enhanced the redox reactions, deposition rate, surface coverage concentration, and electron transfer rate of materials during the composite film formation on the electrode surface. Materials used in these studies for various composite preparations are palladium nanoparticles (Pd), zirconium oxide nanoparticles (ZrO2) and nickel hexacyanoferrate (NiHCF). These successfully prepared carbon materials containing composite film modified electrodes have been explored further for the electro analytical determination of biochemical and chemical compounds such as CRGO/Pd for dopamine and diclofenac, ZrO2/f-MWCNTs for p-nitrophenol, NiHCF-AFCNT for S2O82- and tannic acid. Studies on interferences of few chemical and biochemical compounds present in these mixtures have also been successfully explored.