异相晶核法液相合成金红石型TiO_2纳米晶  

Synthesis of Rutile Tatania by Heterogeneous Nucleation Methods

作　　者：杨少凤[1] 赵纯[1] 宋利珠[1] 赵敬哲[1] 王子忱[1] 徐慧芳[1] 李伯符[1] 

机构地区：[1]吉林大学化学系,长春130023

出　　处：《高等学校化学学报》2001年第6期980-983,共4页Chemical Journal of Chinese Universities

基　　金：吉林省科技发展规划及高等学校骨干教师资助!课题

摘　　要：分别以 Sn Cl2 · 2 H2 O和 Sn Cl4 · 5H2 O为锡源 ,采用胶溶晶核法 ,经沉淀和胶溶过程 ,在液相中一步合成了金红石型 Ti O2 .详细考察了各种胶溶条件对产物结构的影响 ,并通过两种锡源实验结果的比较对异相晶核法中两种锡源的成晶机理进行了分析 .所合成的金红石型 Ti O2 晶粒度为 2 0～ 50 nm,两种方法获得完全金红石型 Ti O2 所需引入 Sn O2 的最低物质的量的分数分别为 1 0 %和 8% .Rutile tatania powders were synthesized in aqueous solutions, avoiding the appearance of TiO 2 in anatase form, by heterogeneous nucleation methods with SnCl 2·2H 2O(method A) and SnCl 4·5H 2O(method B) as the raw materials respectively. The effects of nuclei and peptizing conditions on the structures of products were investigated. The mechanisms of nucleation were studied by comparing the results of the two different raw materials. The content of SnO 2 in the samples with a full rutile structure was 10% and 8%(molar fraction) for the two methods respectively.

关 键 词：异相核法 液相合成 金红石型 二氧化钛纳米晶 

分 类 号：TB383[一般工业技术—材料科学与工程]