Wang Cheng-Li, Hwang Weng-Sing, Chang Kuo-Ming, Ko Horng-Huey, Hsi Chi-Shiung, Huang Hong-Hsin, Wang Moo-Chin
Department of Materials Science and Engineering, National Cheng Kung University, 1 Ta-Hsueh Road, Tainan 70101, Taiwan; E-Mails:
Int J Mol Sci. 2011 Jan 28;12(2):935-45. doi: 10.3390/ijms12020935.
Synthesis of Zn(2)Ti(3)O(8) powders for attenuating UVA using TiCl(4), Zn(NO(3))(2)·6H(2)O and NH(4)OH as precursor materials by hydrothermal process has been investigated. The X-ray diffractometry (XRD) results show the phases of ZnO, anatase TiO(2) and Zn(2)Ti(3)O(8) coexisted when the zinc titanate powders were calcined at 600 °C for 1 h. When calcined at 900 °C for 1 h, the XRD results reveal the existence of ZnO, Zn(2)TiO(4), rutile TiO(2) and ZnTiO(3). Scanning electron microscope (SEM) observations show extensive large agglomeration in the samples. Transmission electron microscope (TEM) and electron diffraction (ED) examination results indicate that ZnTiO(3) crystallites formed with a size of about 5 nm on the matrix of plate-like ZnO when calcined at 700 °C for 1 h. The calcination samples have acceptable absorbance at a wavelength of 400 nm, indicating that the zinc titanate precursor powders calcined at 700 °C for 1 h can be used as an UVA-attenuating agent.
研究了以TiCl₄、Zn(NO₃)₂·6H₂O和NH₄OH为前驱体材料，通过水热法合成用于衰减紫外线A（UVA）的Zn₂Ti₃O₈粉末。X射线衍射（XRD）结果表明，当钛酸锌粉末在600℃煅烧1小时时，ZnO、锐钛矿TiO₂和Zn₂Ti₃O₈相共存。当在900℃煅烧1小时时，XRD结果显示存在ZnO、Zn₂TiO₄、金红石TiO₂和ZnTiO₃。扫描电子显微镜（SEM）观察表明样品中存在大量大团聚体。透射电子显微镜（TEM）和电子衍射（ED）检测结果表明，当在700℃煅烧1小时时，在片状ZnO基体上形成了尺寸约为5nm的ZnTiO₃微晶。煅烧后的样品在400nm波长处具有可接受的吸光度，表明在700℃煅烧1小时的钛酸锌前驱体粉末可作为UVA衰减剂。
