Rapid removal of methylene blue by Fe-filled CNTs

• Main Authors: Li, Hung-Chih, 李鴻志
• Other Authors: Hsu, Wen-Kuang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/18760029254746878391

碩士 === 國立清華大學 === 材料科學工程學系 === 101 === Carbon nanotubes (CNTs), due to surface ring currents and high specific surface area, are often used as absorbing materials and energy storage devices. This thesis focuses on use of Fe-filled CNTs as adsorbents for simultaneous filtering of methylene blue in solution. Fe-filled CNTs are made by pyrolysis of ferrocene and core structure, as revealed by XRD, SEM and TEM, is dominated by α-Fe, along with Fe3C and Fe2O3 as minority. SQUID indicate that Fe-filled CNTs are of ferromagnetic and saturation magnetization reaches a value as high as 0.85emu. UV-Vis spectrometric data confirm reduced concentration of methylene blue by Fe-filled CNTs and the adsorption mechanism resulting from the defects of hexagonal carbon network through Raman spectrometer.