期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
Fabrication of Titanium Dioxide Thin Films by DBD-CVD Under Atmosphere
1
作者 张溪文 郭玉 韩高荣 《Plasma Science and Technology》 SCIE EI CAS CSCD 2007年第6期674-677,共4页
Titanium dioxide films were firstly deposited on glass substrate by DBD-CVD (dielectric barrier discharge enhanced chemical vapor deposition) technique. The structure of the films was investigated by X-ray diffracti... Titanium dioxide films were firstly deposited on glass substrate by DBD-CVD (dielectric barrier discharge enhanced chemical vapor deposition) technique. The structure of the films was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM). TiO2 films deposited under atmosphere pressure show preferred orientation, and exhibit columnar-like structure, while TiO2 films deposited under low gas pressure show no preferred orientation. The columnar-like structure with preferred orientation exhibits higher photocatalytic efficiency, since the columnar structure has larger surface area. However, it contributes little to the improvement of hydrophilicity. DBD-CVD is an alternative method to prepare photocatalytic TiO2 for its well-controllable property. 展开更多
关键词 dielectric barrier discharge chemical vapor deposition titanium dioxide thin film
下载PDF
Preparation of calcium carbonate particles coated with titanium dioxide 被引量:15
2
作者 Hai Lin Ying-bo Dong Le-yong Jiang 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2009年第5期592-597,共6页
The preparation of a new mineral composite material, calcium carbonate particles coated with titanium dioxide, was studied. The mechanism of the preparation process was proposed. The new mineral composite material was... The preparation of a new mineral composite material, calcium carbonate particles coated with titanium dioxide, was studied. The mechanism of the preparation process was proposed. The new mineral composite material was made by the mechanoehemieal method under the optimum condition that the mass ratio of calcium carbonate particles to titanium dioxide was 6.5:3.5. The mass ratios of two different types of titanium dioxide (anatase to rutile) and grinding media to grinded materials were 8:2 and 4:1 respectively, and the modified density was 60%. Under this condition, the new material was capable of forming after 120-min modification. The hiding power and oil absorption of this new material were 29.12 g/m^2 and 23.30%, respectively. The results show that the modification is based on surface hydroxylation. After coating with titanium dioxide, the hiding power of calcium carbonate can be improved greatly. The new mineral composite materials can be used as the substitute for titanium dioxide. 展开更多
关键词 calcium carbonate mechano-chemical process titanium dioxide film HYDROXYLATION
下载PDF
Synthesis of TiO_2 films on glass slides by the sol-gel method and their photocatalytic activity 被引量:2
3
作者 ZHANG Cuixuan CHEN Rufen ZHOU Juan CHENG Jianhui XIA Qing 《Rare Metals》 SCIE EI CAS CSCD 2009年第4期378-384,共7页
Titanium dioxide (TiO2) films with rod-like and sphere-like TiO2 particles were prepared on glass slides employing the sol-gel method. The shape and size of TiO2 particles were controlled using different concentrati... Titanium dioxide (TiO2) films with rod-like and sphere-like TiO2 particles were prepared on glass slides employing the sol-gel method. The shape and size of TiO2 particles were controlled using different concentrations of sodium dodecylbenzensulfonate (SDBS). By increasing the mole ratio of SDBS, the shape of TiO2 particles transformed from rod-like to sphere-like. Also, the size of TiO2 particles became gradually smaller. Then, the size became bigger when an excess amount of SDBS was added. The films were mainly composed of anatase titania and the relative content of anatase increased with the increasing amount of SDBS. The photocatalytic activity of the TiO2 films that were added with SDBS was higher than that without SDBS. When the concentration of SDBS was 8.0 at%, the sample exhibited the best photocatalytic activity. 展开更多
关键词 titanium dioxide film SYNTHESIS photocatalytic activity particle shape
下载PDF
A non-labeled DNA biosensor based on light addressable potentiometric sensor modified with TiO_2 thin film 被引量:1
4
作者 Xiao-lin ZONG Chun-sheng WU Xiao-ling WU Yun-feng LU Ping WANG 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2009年第11期860-866,共7页
Titanium dioxide (TiO2) thin film was deposited on the surface of the light addressable potentiometric sensor (LAPS) to modify the sensor surface for the non-labeled detection of DNA molecules. To evaluate the effect ... Titanium dioxide (TiO2) thin film was deposited on the surface of the light addressable potentiometric sensor (LAPS) to modify the sensor surface for the non-labeled detection of DNA molecules. To evaluate the effect of ultraviolet (UV) treatment on the silanization level of TiO2 thin film by 3-aminopropyltriethoxysilane (APTS),fluorescein isothiocyanate (FITC) was used to label the amine group on the end of APTS immobilized onto the TiO2 thin film. We found that,with UV irradiation,the silanization level of the irradiated area of the TiO2 film was improved compared with the non-irradiated area under well-controlled conditions. This result indicates that TiO2 can act as a coating material on the biosensor surface to improve the effect and efficiency of the covalent immobilization of biomolecules on the sensor surface. The artificially synthesized probe DNA molecules were covalently linked onto the surface of TiO2 film. The hybridization of probe DNA and target DNA was monitored by the recording of I-V curves that shift along the voltage axis during the process of reaction. A significant LAPS signal can be detected at 10 μmol/L of target DNA sample. 展开更多
关键词 DNA biosensor titanium dioxide (Ti02) thin film Light addressable potentiometric sensor (LAPS) SILANIZATION Fluorescein label Gene chip
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部