化妆品用钛白粉的溶胶凝胶合成及其性能研究

doi:10.3969/j.issn.2097-2806.2024.05.011

摘要/Abstract

摘要：

采用溶胶凝胶法合成了钛白粉、钛酸锶和钛酸钡3种防晒剂。晶体结构表征表明钛白粉为四方晶系的金红石相的TiO₂，空间群为P42/mnm（136）；钛酸锶为立方晶系，空间群为Pm-3m（221）；钛酸钡为四方晶系，空间群为P4/mmm（123）。官能团信息表征发现，钛白粉和钛酸钡为纯相，而钛酸锶中含有少量C-O官能团。SEM和TEM观察发现，钛白粉、钛酸锶和钛酸钡的颗粒均近似呈球形，平均颗粒尺寸分别为30，40和60 nm。光学性质表征表明，3种防晒剂均具有高的紫外光吸收系数，且钛白粉的光学吸收系数可拓展到400 nm范围。经计算可知，钛白粉、钛酸锶和钛酸钡的光学带隙值分别为3.03，3.27和3.25 eV。钛白粉具有宽的紫外光吸收能力且颗粒分布均匀，颜色为白色，可潜在应用于各种香料、防晒霜、皂片、白色香皂和牙膏中。

关键词: 钛白粉, 钛酸锶, 钛酸钡, 防晒剂

Abstract:

Three kinds of sunscreen agents, titanium dioxide, strontium titanate and barium titanate were synthesized by sol-gel method. Crystal structure characterization shows that titanium dioxide is tetragonal rutile phase TiO₂, with space group P42/mnm （136）.Strontium titanate is cubic crystal system with space group Pm-3m （221）. Barium titanate is tetragonal with space group P4/mmm （123）. It is found that titanium dioxide and barium titanate are pure phases, while strontium titanate contains a small amount of C-O functional groups. SEM and TEM results show that the particles of titanium dioxide, strontium titanate and barium titanate are approximately spherical, and the average particle size is 30, 40 and 60 nm, respectively. The optical properties show that titanium dioxide, strontium titanate and barium titanate have high UV absorption coefficients, and the optical absorption coefficient of titanium dioxide can be extended to 400 nm. The calculated optical bandgap values of titanium dioxide, strontium titanate and barium titanate are 3.03, 3.27 and 3.25 eV, respectively. The results show that titanium dioxide has a wide UV absorption capacity and uniform particle distribution, with a white color, which can be potentially used in various spices, sunscreen, saponin, white soap and toothpaste.

Key words: titanium dioxide, strontium titanate, barium titanate, sunscreen agent

中图分类号:

TQ658

马虹, 王艳. 化妆品用钛白粉的溶胶凝胶合成及其性能研究[J]. 日用化学工业（中英文）, 2024, 54(5): 574-580.

Hong Ma, Yan Wang. Sol-gel synthesis and properties of titanium dioxide for cosmetics[J]. China Surfactant Detergent & Cosmetics, 2024, 54(5): 574-580.

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参考文献 21

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样品	颜色参数						E_g/eV	参照文献
样品	L^*	a^*	b^*	c^*	H^o	?E^*_CIE	E_g/eV	参照文献
TiO₂	97.225	0.657	3.589	3.648	79.626	97.293	3.03	本实验
SrTiO₃	98.457	0.465	1.201	1.288	68.835	98.465	3.27
BaTiO₃	98.932	0.211	1.036	1.057	78.488	98.938	3.25
Starch-2% TiO₂	62.11	-2.32	-8.32	—	—	61.3	—	[17]
SrTiO₃	90.947	2.851	2.582	3.846	42.165	91.028	3.046	[18]
BaTiO₃	87.945	1.219	4.257	4.428	74.021	88.056	2.71	[16]