Effect of CTAB on Structure and Properties of Mesoporous and Layered TiO2 Prepared by Inorganic Precipitation-Peptization Method
ZHANG Liyuan1,2, YOU Jia1, ZHONG Yajie1, DONG Zhihong1, HAN Yanlin1, SUN Xubing1,2, YOU Yaohui1,2
1 College of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641112, China 2 Key Laboratory of Fruit Waste Treatment and Resource Recycling of the Sichuan Provincial College, Neijiang 641112, China
Abstract: Mesoporous and layered CTAB-TiO2 was prepared by inorganic precipitation-peptization method using hexadecyl trimethyl ammonium bromide (CTAB) as a soft template and titanium sulphate as titanium source. The surface morphology, crystalline phase, ultraviolet absorption band, specific surface and pore structure of the samples were analyzed by field emission scanning electron microscopy (FESEM), X-Ray diffractometer (XRD), ultraviolet visible absorption spectrum (UV-Vis-Abs), specific surface area meter (BET), respectively. The photocatalytic properties of the samples were studied with methyl orange as the target degradation. The results indicate that under irradiation with 300 W gold halogen lamps for 28 min, the degradation rate of methyl orange by 5.69% CTAB-TiO2 calcined at 550 ℃ was up to 96.02%, which was significantly higher than that of pure TiO2. After the modification of TiO2 by CTAB, the mesoporous and layered structure was formed, the crystallinity and grain size of TiO2 were decreased, and transformation from anatase to rutile was promoted. Besides, the introduction of CTAB caused a certain red shift of the light absorption band of TiO2, thus improving its photocatalytic performance.
张理元, 尤佳, 钟雅洁, 董志红, 韩炎霖, 孙绪兵, 由耀辉1,2,. CTAB对无机沉淀-胶溶法制备介孔层状TiO2结构与性能的影响[J]. 材料导报, 2020, 34(24): 24014-24018.
ZHANG Liyuan, YOU Jia, ZHONG Yajie, DONG Zhihong, HAN Yanlin, SUN Xubing, YOU Yaohui. Effect of CTAB on Structure and Properties of Mesoporous and Layered TiO2 Prepared by Inorganic Precipitation-Peptization Method. Materials Reports, 2020, 34(24): 24014-24018.
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2020, Vol. 34 
