CTAB对无机沉淀-胶溶法制备介孔层状TiO<sub>2</sub>结构与性能的影响

doi:10.11896/cldb.19100030

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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.

Key words： precipitation-peptization method CTAB mesoporous and layered TiO₂ photocatalysis

Published: 24 December 2020

CLC number:

TB34

Fund:This work was financially supported by the Key Project of Neijiang Normal University (17JC23), the Undergraduate Innovative Project of Neijiang Normal University (X2020015, X2020023).

About author:: Liyuan Zhang received his Ph.D. degree in December 2014 from Sichuan University in materials. He is currently an associate professor in College of Chemistry and Chemical Engineering, Neijiang Normal University. His research interests are inorganic functional materials, environmental protection materials, and recycling of waste. He presided over one Sichuan Science and Technology Program and one key project of Sichuan Education Department. In the past five years, he has published more than 20 academic papers in important journals at home and abroad, including 12 SCI papers.
Yaohui You graduated from Sichuan University in June 2014 with a Ph.D. degree in biomass chemistry and engineering. He is currently an associate professor, distinguished professor and a member of the academic committee of College of Chemistry and Chemical Enginee-ring, Neijiang Normal University. He presided over one National Natural Science Foundation of China and one Major Science and Technology Support Plan of Sichuan Province. He published more than 20 papers by the first author or correspondent author, and two invention patents were granted with the first inventor. He has been awarded the discipline leader of Neijiang City, and is also a graduate student instructor of Sichuan University of Science & Engineering.

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	ZHANG Liyuan
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Cite this article:

ZHANG Liyuan,YOU Jia,ZHONG Yajie, et al. Effect of CTAB on Structure and Properties of Mesoporous and Layered TiO₂ Prepared by Inorganic Precipitation-Peptization Method[J]. Materials Reports, 2020, 34(24): 24014-24018.

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http://www.mater-rep.com/EN/10.11896/cldb.19100030 OR http://www.mater-rep.com/EN/Y2020/V34/I24/24014

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