Strong enhancement on dye photocatalytic degradation by ball-milled TiO2:A study of cationic and anionic dyes

作     者：Z.Jia L.B.T.La W.C.Zhang S.X.Liang B.Jiang S.K.Xie D.Habibi L.C.Zhang 

作者机构：School of EngineeringEdith Cowan University270 Joondalup DriveJoondalupPerthWA 6027Australia Environmental Protection Administration of fi'an CithJi'an 343000China School of Mechanical and Chemical EngineeringThe University of Western AustraliaPerchWA 6009Australia School of Materials Science and EngineeringUniversity of Science and TechnologyBeijing 100083China School of Mechanical&Electrical Engineeringfinggangshan Universityfl'an 343000China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2017年第33卷第8期

页      面：856-863页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

主　　题：Ball-milled TiO2 Congo red Methylene blue Equilibrium adsorption Photocatalysis 

摘      要：TiO2 particles with desirable properties were produced by undergoing specific durations of ball *** of the TiO2 particles before and after ball milling were investigated via X-ray diffraction（XRD）, Brunauer-Emmett-Teller（BET）, particle size analysis, zeta potential, and scanning electron microscope（SEM）. The equilibrium adsorption data were well fitted to Langmuir, Freundlich, and Dubinin-Radushkevich（D-R） isotherms. Compared to the as-received TiO2（mean particle size d150= 0.78μm, specific surface area = 88.17 m^2g-1, pore volume = 0.41 cm^3g-1）, the 60 min ballmilled TiO2（d50= 0.55 μm, specific surface area = 99.48 m2g-1, pore volume = 0.48 cm3g-1） enhanced the adsorption quantity of congo red and methylene blue from 10.4 mg g-1to 13.6 mg g-1, and from17.0 mg g-1to 22.2 mg g-1, respectively; and also improved the kinetic rates from k = 0.1325 to 0.2193, and k = 0.0944 to 0.1553, respectively. Dye adsorption and degradation efficiency of congo red was enhanced in acidic p H range（2–5.14）, and methylene blue was enhanced in alkaline p H range（7.58–12）.