Preparation of Copper Ion Sensing Ligand-functionalized Cellulose Nanofiber Film

• Main Authors: Chuang-Fu Shih, 石創輔
• Other Authors: Toyoko Imae
• Format: Others
• Language: en_US
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/qgjc35

碩士 === 國立臺灣科技大學 === 化學工程系 === 107 === A Cu2+ selective fluorescence turn-off sensor film was developed based on 2,2,6,6-tetramethyl-1-piperidinyloxy radical-oxidized cellulose nanofiber and cooperated with cupper ion-selective ligand, which was called 3,5-bis(((2-hydroxynaphthalen-1-yl)methylene)amino)benzoic acid. Ligand was prepared by the condensation method. The prepared sensor film was characterized by Fourier transform infrared absorption, ultraviolet–visible absorption, fluorescence spectrometers, optical microscope and multi-functional field-emission scanning electron microscope. The fluorescence intensity of the film decreased linearly with the Cu2+ concentration. The experimental parameters affecting the fluorescence turn-off sensor were investigated and optimized at 310nm excitation wavelength. Then the limit of detection and the limit of quantification were 18 and 60 ppm Cu2+, respectively. This cellulose-based fluorescence sensing film is easy and convenient for detecting metal ions. Thus, this research work has proposed novel avenue for the detection of metal ions in the environment.