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TiO_(2),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。
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 TiO_(2),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.
作者
马虹
王艳
Hong Ma;Yan Wang(Yinchuan University of Energy,Yinchuan,Ningxia 750000,China;School of Petroleum and Chemical Engineering,BaYin GuoLeng Vocational and Technical College,Korla,Xinjiang 841000,China)
出处
《日用化学工业（中英文）》
CAS
北大核心
2024年第5期574-580,共7页
China Surfactant Detergent & Cosmetics
关键词
钛白粉
钛酸锶
钛酸钡
防晒剂
titanium dioxide
strontium titanate
barium titanate
sunscreen agent
