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。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。