首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2篇
  免费   0篇
化学工业   1篇
金属工艺   1篇
  2006年   2篇
排序方式: 共有2条查询结果,搜索用时 46 毫秒
1
1.
The SiO2/TiO2 composite powders including mineral tourmaline powders (T/SiO2/TiO2) were prepared from a sol made by a two-step hydrolysis method, using metasilicate ester as precursor. The powders were characterized by scanning electron microscopy (SEM). The photocatalytic activity of the sample was evaluated by the photocatalytic degradation of methyl orange. The effects of heat-treatment on the photocatalytic activity were discussed. It is found that the T/SiO2/TiO2 composite powders show higher photocatalytic activity when including 10% SiO2 and 4% tourmaline. Moreover, the photocatalytic mechanism of tourmaline on the powders was proposed.  相似文献   
2.
电气石远红外辐射对水表面张力的影响   总被引:1,自引:1,他引:0  
用固液分置法排除电气石自发电场对水的影响,研究了极性晶体电气石辐射的远红外线对水表面张力的影响规律.结果表明:电气石辐射的远红外线作用于水分子产生共振,可削弱水分子间氢键作用,从而使水表面张力降低.室温时,当电气石粉体的中位粒径(D50)为4.0~6.5 μm时,随着电气石辐射远红外线对水作用时间延长,水的表面张力逐渐降低.D50为4.0 μm,电气石粉体与水的质量比[m(t)/m(w)]不低于0.5时,随着辐射时间的延长水表面张力明显降低.D50为6.5 μm,m(t)/m(w)为0.5时,水表面张力由初始值72.571 mN/m降为72.049 mN/m.  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号