双亲型二氧化钛纳米粒子的制备及高稳定非水分散性研究

doi:10.11896/cldb.21060093

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Abstract Amphiphilic titanium dioxide nanoparticles were synthesized and modified by a hydrothermal method using tetrabutyl titanate (TBOT) as the titanium source and cationic surfactant cetyltrimethylammonium bromide (CTAB) as the modifier in ammonia water(25%—28%) medium. The hydrothermal synthesis process was investigated by controlling the reaction temperature and time in this work. The surface of prepared TiO₂ particles was modified by cationic surfactant CTAB with varied concentrations in the reaction system in order to prevent the agglomeration of TiO₂ nanoparticles and improve their charge and dispersion stability in organic dispersion medium. The modified TiO₂ nanoparticles were fully characterized by X-ray diffraction spectroscopy(XRD), scanning electron microscope(SEM) and infrared absorption spectroscopy. The properties of Zeta (ζ) potential, particle size distribution, electrophoretic mobility and dispersion stability were explored. The results show that the Zeta potential of TiO₂ nanoparticles in Isopar L reaches as high as +58.89 mV and particles maintains high dispersion stability, when CTAB has been added at an optimal concentration of 0.7 mg/mL. This study provides an efficient way to synthesis uniformed and amphiphilic TiO₂ nanoparticles with well-dispersed property in the non-aqueous solution.

Key words： titanium dioxide nanoparticles hydrothermal method Zeta potential dispersion stability non-aqueous system

Published: Online: 2022-10-26

CLC number:

TQ134

Fund:National Natural Science Foundation of China(201908161) and Youth Foundation of Tianjin Natural Science Foundation (20JCQNJC01220).

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	Articles by authors
	HE Yingzhi
	ZHAO Qian
	WANG Shirong
	LIU Hongli
	ZHANG Tianyong
	LI Bin
	LI Xianggao

Cite this article:

HE Yingzhi,ZHAO Qian,WANG Shirong, et al. Preparation of Amphiphilic TiO₂ Nanoparticles with Highly-stabilized Non-aqueous Dispersibility[J]. Materials Reports, 2022, 36(20): 21060093-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21060093 OR http://www.mater-rep.com/EN/Y2022/V36/I20/21060093

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