활성탄소섬유 표면의 염산처리효과와 TiO2 형성에 관한 분석

Abstract

.We have studied a method for the preparation of ACF/TiO2 composites involving the penetrationof titanium n-butoxide (TNB) solution into activated carbon fiber. It was focused on the characterization ofTiO2 formed in prorous carbon was which increased with surface functional groups by hydrochloric acidtreatment. The conversion of TNB to TiO2 for the acid treatment effect must be important for the preparationof ACF/TiO2 composites. From the characterization of surface properties, both the BET surface area and thetotal pore volume decreased as the distribution of TiO2 on the activated carbon fiber surfaces after acid treatments.The changes in XRD pattern showed the typical anatase type on ACF/TiO2 composite for the sample namedFT, FT1 and FT2 treated with 0.05, 0.1 and 0.5 M, respectively. However, XRD patern of FT3 treated with. Corresponding authorPhone : +82-(0)41-660-1337 Fax : +82-(0)41-688-3352E-mail: wc_oh@hanseo.ac.kr280 ...........Analytical Science & Technology0.5M showed mixed amatase-rutile structure. According to the results of SEM micrographs, the titanium complexeparticles were irregularly distributed around carbon. And some large clusters were found when an amount of acidtreatment increased. The EDX results of ACF/TiO2 composites showed the presence of C, O and P with strongTi peaks. Finaly, the excellent photocatalytic activity of the ACF/TiO2 composites between relative concentration(c/co) of MB (methylene blue) and UV iradiation time could be atributed to the both effects between photocatalysisof the formation of titania complexes and adsorptivity of the activated carbon fiber.