锐钛矿

The effects of initial concentration of methylorange ,pH value of solution, concentration of Cl~- and aerating oxygen or not on photocatalytic degradation rate of methylorange were investigated with anatase TiO_2 as catalyst under normal daylight lamp.

以锐钛矿型TiO2为光催化剂，以普通日光灯为激发光源，考察了甲基橙的初始浓度、溶液pH值、Cl-的浓度以及通氧与否等条件对甲基橙光催化降解速率的影响。

It consists of a two-layer coating of SnO_2:F as an inner layer and TiO_2 as an outer layer.

TiO_2薄膜分别在普通玻璃和在SnO_2：F层上沉积，主要形成的为锐钛矿相。

These results indicated that a well structured anatase TiO2 was obtained by impregnation method under 500℃. Flow rate, in the activity test, could be neglected for mass transfer effects. As a matter of fact, relative humidity played the most important role in this reaction. The highest removal efficiency was obtained while relative humidify of 56.8%. Water molecules are sources of ; however, excessive water molecules could inhibit reactions by competing activity sites with organic containments. In the regeneration test, photocatalyst could be reactivated through a running water vapor with UV light illumination process.

研究结果指出，以含浸法制备之触媒於500℃锻烧下，具有良好的锐钛矿晶体结构；另外在活性测试的部份，流量的增加，污染物之去除效果不受影响，所以本实验选择以200ml/min之流量可忽略质传影响；湿度扮演重要的角色，当RH=56.8％时去除效率最高，主要因水气是产生氢氧自由基的主要来源，但是过多之水气可能与有机物竞争触媒表面上的活性位置，因而抑制反应的进行；初使浓度对去除率之影响中得知，初使浓度的高低不会影响触媒对有机物的催化能力，实验使用之触媒量适合催化200~250ppm之有机物，可藉由增加触媒量提高对有机物之催化能力；此外再生的测试，触媒可经由连续曝水及紫外光的照射，使触媒恢复原有的活性，可再次利用。

First-principles plane-wave pseudopotential calculations were performed to study energetics , the geometry structures of intrinsic vacancies and interstitials on the anatase TiO2 (101) crystal surface.

采用平面波超软赝势方法计算了锐钛矿型TiO2(101)面存在本征空位和间隙点缺陷的几何结构以及缺陷形成能。

The results show Ce-TiO2 coating on kieselguhr. The crystalline phase of titanium dioxide is still only anatase in wide range of temperature. The light absorption in visible region increases with increasing Ce-doping content in J2Ce-TiO2/kieselguhr, so it is beneficial to use sun's ray.

结果表明：Ce-TiO2包覆在硅藻土颗粒上，并能在较高的煅烧温度(500 ℃)范围内保持锐钛矿晶体结构；随着铈掺杂含量的提高，J2Ce-TiO2/KL对可见光的吸收明显增强，有利于充分利用太阳光。

When the TiO2 content in the support reached 5%, octahedrite structure appeared in XRD pattern.

当TiO2质量分数大于5%时，出现TiO2的锐钛矿晶相峰。

During the process of peptization and hydrothermal crystallization, the aggregation behavior and the resulting morphology of nanocrystalline titania (TiO2) were studied by X-ray diffraction, scanning electron microscope, and dynamic light scattering techniques.

通过XRD、SEM和动态光散射粒度测定仪研究了胶溶及水热晶化过程中纳米TiO2晶粒聚集行为及形貌。实验结果表明，在胶溶无定形沉淀过程中所形成的大小为10-15nm的锐钛矿型胶粒或金红石型胶粒易定向聚集成更大的、具有(30-50)nm×(80-100)nm的次级晶粒。含有次级晶粒的溶胶前驱液在水热晶化过程中，次级晶粒发生崩裂并生长成结晶度更高的大小约为10-30nm球形和大小约为20-60nm棒状纳米TiO2

A structure of C/ TiO2/ITO and ITO/TiO2/ITO were used to test the photoconductivity of TiO2 thin film using a black light lamp as light source.

以黑光灯为光源，采用ITO/TiO_2/ITO和C/TiO_2/ITO结构通过光电流测量了锐钛矿相TiO_2薄膜的紫外光响应。

In the case of anatase, higher light powers generated higher photocurrent values at high applied voltages.

对于锐钛矿薄膜，当施加较高的外电压时，越高的光功率会产生越大的光电流。

Results showed that the size of particles was in the range of 10~30 nm and all the particles were anatase crystals having shapes of rectangle, spindle and puncheon, etc.

结果表明：所得颗粒大小为10~30nm，形状有长方形、纺锤形、短柱形等，且颗粒均为锐钛矿型晶体。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。