9846

9083

كارشناسي ارشد

شيمي تجزيه

اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي

1393

چهارده، 73ص.: مصور، جدول، نمودار

ص.ع. به فارسي و انگليسي

بهزاد رضايي

علي اصغر انصافي

94/2/2

محمدتقي جعفري، محمدمحسن مومني

1396/09/26

كتابنامه

شيمي

شيمي

ID9083

74 Application of Carbon Quantum Dots and Multiwall Carbon Nanotubes as Modifiers for Fabrication of Electrochemical Sensor to Determination of Dextromethorphan Drug Neda Irannejad Email n irannejad@ch iut ac ir Department of Chemistry Isfahan University of Technology Isfahan 84156 83111 IranDegree M Sc Language Farsi Supervisor Professor Behzad Rezaei Email Rezaei@cc iut ac ir Abstract In this research it has been used nanomaterials and nanostructures for the modification of working electrodes to improve efficiency and sensitivity for the electrochemical sensor Carbon dots C dots have recently attracted extensive interest for their unique properties of tunable photoluminescence low toxicity and favorable biocompatibility In this work in the first section highly amino functionalized fluorescent carbon dots CDs were fabricated by hydrothermal carbonization of chitosan at a mild temperature Multiwall carbon nanotubes MWCNTs and Carbon dots CDs were used in the preparation of working electrode This sensor was based on poly diallyl dimethyl ammonium chloride PDDA Multiwall carbon nanotubes MWCNTs Carbon dots CDs modified pencil graphite electrode PGE for monitoring the dextromethorphan oxidation signals Field emission scanning electron microscopy FE SEM was employed for characterization of the various modifiers that were formed at the electrode surface The results showed that the chemically modified electrode exhibited considerable sensitivity The electrochemical behavior and determination of dextromethorphan have been studied on the PDDA MWCNTs CDs PGE by cyclic voltammetry and differential pulse voltammetry techniques for the sensitive determination of dextromethorphan in the plasma and urine Different parameters on the response of measurement of dextromethorphan are optimized Under the optimized conditions using differential pulse voltammetry one linear range was obtained from 2 0 M 600 0 M for dextromethorphan with a detection limit of 0 19 M results show that the sensor is a useful tool for determination of dextromethorphan in biological samples Keywords Electrochemical Sensor Pencil Graphite Electrode Carbon Dots Multiwall Carbon Nanotubes Differential Pulse Voltammetry Dextromethorphan

بهزاد رضايي

علي اصغر انصافي

محمدتقي جعفري، محمدمحسن مومني