共查询到18条相似文献,搜索用时 92 毫秒
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采用直流磁控溅射法先在釉面砖上镀制一层 Ti膜 ,然后采用阳极氧化法制备透明的 Ti O2 薄膜。根据光的干涉原理 ,控制 Ti O2 膜的厚度 ,制备了土黄、深兰、浅兰、金黄、粉红、紫红、绿色等十余种颜色的金属化装饰面砖 相似文献
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探讨了在不同电流、电解液浓度下,对钛表面进行阳极氧化所制得的氧化膜的结构与工艺参数之间的关系.然后,在硫酸电解液中添加聚四氟乙烯(PTFE)乳液,从而在钛表面制备TiO2-PTFE复合薄膜.用X射线光电子能谱(XPS)、扫描电镜(SEM)等对薄膜的微观特征进行表征.扫描电镜结果显示,所获得的氧化物为多孔结构薄膜,孔径为200~300nm,有利于电解液中超细颗粒的填充.添加PTFE乳液后,钛阳极氧化膜的孔隙部分或全部被PTFE微粒填充. XPS分析结果表明氧化膜内含有F元素. 相似文献
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在乙二醇+0.5%(质量分数)NH扩的电解质溶液中利用单向直流脉冲电源阳极氧化方法,在电压为40-60v之间制备了直径为90-142nm、管壁厚度为21.8-17nm的TiO2纳米管,SEM测试表明TiO2纳米管的形貌和生长速度密切依赖于氧化处理的电参数,同时通过XRD和Uv-Vis等检测手段对TiO2纳米管退火前后的特性进行了研究。 相似文献
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采用电化学阳极氧化法在HF水溶液体系中对钛金属进行表面处理,得到高度规整的TiO2纳米管阵列.主要研究了电解液pH值大小对TiO2纳米管阵列形貌(管径及管长)的影响;用扫描电子显微镜(SEM)对其表面形貌进行表征.结果表明:酸性条件下能形成TiO2纳米管;强碱性环境不利于TiO2纳米管的制备;在可制备TiO2纳米管的pH值范围内,管径和管长随pH值升高而减小.采用微孔模型对pH值的影响机理进行了阐述. 相似文献
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水解沉积--阳极氧化法形成Al-Ti复合氧化膜 总被引:3,自引:0,他引:3
通过含钛无机盐的水解沉积及高温热处理,铝电极箔表面形成高介电常数氧化物———TiO2 膜层,然后在己二酸铵溶液中恒电流阳极氧化,形成 Al Ti复合氧化膜。AFM观测了含钛无机盐水解沉积过程中,铝电极箔表面形貌的变化。在铬酸和磷酸的混合溶液中测试了氧化膜的耐电压随溶解时间的变化。通过SIMS检测了复合氧化膜中 Al3 、Ti4 的强度随溅射时间的变化。膜溶解试验及 SIMS 检测结果表明Al Ti复合氧化膜由 3 层组成,外层和中间层为 Al、Ti、O不同配比的混合物,内层则为纯的 Al2O3。铝电极箔比容随氧化膜耐电压的变化关系曲线表明,60V耐电压下,Al Ti复合氧化膜的比容提高率为51%。 相似文献
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利用微等离子体氧化方法,在纯Ti金属表面制备TiO2、TiO2(W)薄膜,并用X射线衍射(XRD)、扫描电镜(SEM)初步研究了薄膜的组织结构和表面形貌.在不同的条件下,得到3种不同类型结构组成的薄膜单一TiO2的锐钛型结构、单一TiO2金红石结构及TiO2(W)薄膜;同时对薄膜的催化特性进行了初步的研究. 相似文献
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The multi-layer TiO2 nanotube array thin films have been formed by anodic oxidation method via adjusting the outer voltage during oxidation process in glycerol electrolyte containing 0.3% NH4HF2. The diameter of the nanotube array increases with the outer voltage, and the length of nanotube in every layer increases with the anodic oxidation time. These multi-layers bring new possibilities to tailor the properties of the TiO2 nanotube array thin films formed via anodic oxidation method. Further, such multi-layer structure provide a new approach to evaluate the growth rate of TiO2 nanotube, which will help us to understand more deeply the formation mechanism of the TiO2 nanotubes. The growth rate of TiO2 nanotube array is respectively 1.2 and 3.6 μm/h under the anodic voltage of 30 V and 60 V. These multi-layer TiO2 nanotube array thin films may exhibit lots of potential applications in photoelectrochemical fields. 相似文献
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Microporous titanium dioxide thin films have been fabricated on titanium plates by the micro-plasma oxidation method with the electrolyte of H2SO4. The influence of Fe3+ ions addition in the electrolyte on the photocatalytic activities was investigated. The results reveal that titanium dioxide thin films produced with Fe3+ addition electrolyte exhibit higher photoactivity than pure electrolyte for the oxidation of rhodamine B. The removal of rhodamine B reaches 90% for 30 min when Fe3+ addition concentrate is 0.2 g/L. Experimental results of X-ray diffraction and atom force microscopy show that the increase in activity is related to change in the lattice parameters and cell volume. 相似文献
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SnO2-TiO2 composite thin films were fabricated on soda-lime glass with sol-gel technology. By measuring the contact angle of the film surface and the degradation of methyl orange, we studied the influence of SnO2 doping concentration, heat-treatment temperature and film thickness on the super-hydrophilicity and photocatalytic activity of the composite films. The results indicate that the doping of SnO2 into TiO2 can improve their hydrophilicity and photocatalytic activity, and the composite film with 1-5 mol% SnO2 and heat-treated at 450°C is of super-hydrophilicity. The optimal SnO2 concentration for the photocatalytic activity is 10 mol% and larger film thickness is helpful to reduce the contact angle of the composite films. 相似文献
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Nitrogen doped anatase TiO2 (N-TiO2) were prepared by hydrothermally treating TiN with H2O2. The as-synthesized samples were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM), UV-vis diffuse reflectance spectrum (DRS), Fourier transform infrared spectra (FT-IR) and X-ray photoelectron spectroscopy (XPS) techniques. The results confirmed that the hydrothermal oxidation is an effective method to prepare N-doped TiO2 anatase. The nitrogen concentration in TiO2 could be controlled by the concentration of H2O2 solution. Photocatalytic degradation of methyl orange (MO) was carried out under visible light and UV-visible light irradiation, respectively. The as-prepared optimal N-TiO2 showed higher photocatalytic activity than N-P25 and P25, and exhibited excellent reusability. 相似文献
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使用水热法在掺氟SnO2涂覆的导电玻璃(FTO)基板上生长TiO2纳米线,随后在TiO2纳米线上采用水热法生长WO3纳米线,制备出WO3/TiO2复合薄膜。通过循环伏安法(CV)、计时电流法(CA)、计时电量法(CC)等电化学测试技术研究了WO3/TiO2复合薄膜的电致变色性能;采用紫外分光光度计对薄膜的着色﹑漂白状态的响应时间进行测试。通过以上测试,计算得到了薄膜的循环稳定性﹑光调制﹑着色效率和切换时间(Y和X)等参数。结果显示WO3/TiO2复合薄膜的电致变色性明显提高,其中WO3/TiO2复合薄膜可逆性增加了6%,着色效率提高了40.96 cm2/C。 相似文献
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In this study, TiO2 nanocomposite films with 10 g/L of TiO2 and copper loaded TiO2 nanoparticles as nanofillers were deposited on the glass substrates using the sol gel dip-coating method. FE-SEM and UV-vis spectrophotometer were used to evaluate morphological and optical properties of copper loaded titania nanoparticles. In addition, XPS and water contact angle techniques were used to study the surface properties and superhydrophilicity of titania nanocomposite films, respectively. The results indicated that copper loaded TiO2 nanoparticles had a significant effect on the hydrophilicity of nanocomposite film and maintaining it in a dark place for a long time (6.2 degree for titania nanocomposite films with copper loaded nanoparticle and 23.7 degree for nanocomposite film with titania nanoparticles). 相似文献
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Nitrogen-doped titanium dioxide thin films with visible light photoresponse were prepared by oxidation of sputtered TiNx films, whose nitrogen contents can be easily changed by controlling the volume ratio of N2/(Ar + N2) during reactive direct current (DC) magnetron sputtering process. The reference TiO2 sample was also deposited by the same method under Ar/O2 gas mixture. The as-prepared films were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoemission spectroscopy, UV-vis spectrophotometry and photoelecrochemical measurements. The formation of anatase type TiO2 is confirmed by XRD. SEM measurement indicates a rough surface morphology with sharp, protruding modules after annealing treatment. Optical properties reveal an extended tailing of the absorption edge toward the visible region due to nitrogen presence. The band gap of the N-doped sample is reduced from 3.36 eV to 3.12 eV compared with the undoped one. All the N-doped samples show red shift in photoresponse towards visible region and improved photocurrent density under visible irradiance is observed for the N-doped samples. 相似文献