查询词典 anatase

He results of TG/DTA and XRD show that Cu2+/TiO2 powder dried at 70℃ is a mixed phase of anatase and brookite. From the TEM photograph, we can find that its dispered property is good and the grains are like balls.

G/DTA和XRD分析的结果表明未经高温处理的Cu2+/TiO2粉体是锐钛矿和板钛矿的混和晶型。

The crystalline size was estimated to be around 13.3-20 nm. Raman spectra indicated there coexisted other phases and a transformation from brookite to anatase in the samples doped with 0.2% Sb.

掺入适量的Sb后，由于Sb替代了TiO2的部分Ti形成Sb-O-Ti结构，改变了TiO2的晶格结构，改善了薄膜的结晶效率，使锐钛矿结构的TiO2：Sb含量明显提高。

TiO_2 is a very important wide bandgap semiconductor, which mainly include three crystal structures. Anatase and rutile are tetragonal. Brookite is orthorhombic.

TiO_2是一种重要的宽禁带半导体材料，主要有3种晶型，即金红石、锐钛矿和板钛矿结构，其中金红石和锐钛矿属四方晶系，板钛矿属正交晶系。

When AgNO_3 concentration was higher than 0.03 M, the prepared samples consisted of anatase, brookite, rutile and metal silver nanocrystal particles, and their grain size ranges were 5-30 nm.

当AgNO_3浓度高于0.03 M时，Ag-TiO_2复合薄膜由锐钛矿、金红石、钣钛矿、金属银颗粒组成，它们的晶粒尺寸范围在5-30 nm。

1The nanocrystalline TiO2 film is prepared by sol-gel and appearance of the film is observed by SEM. The X-ray graph shows the film has lots of anatase and a few rutile TiO2, but does not have brookite TiO2. The average diameter of particle is 25nm according to Scherrer formula.

采用溶胶-凝胶法制备了纳米晶二氧化钛薄膜，通过扫描电镜观察了其形貌，X射线衍射表征显示出制备的薄膜具有大量的锐钛矿晶型和少量的金红石晶型，不含有板钛矿晶型，根据Scherrer公式计算出薄膜的晶粒的平均尺寸为25nm。

Using the aforementioned experimental methods,the author has performedcareful study on the thermoanalytical characteristic of nanocrystalline brookite-basedTiO2,and found that on the DTA curve there exists a small irreversible endothermicpeak,which is related to the dramatic structural phasetransformation from brookite to anatase then to rutile.

利用上述实验手段，作者首次对板钛矿基(brookite-based)纳米TiO2的热分析特性进行了较系统、深入的研究，发现在DTA曲线上存在一较小的不可逆、无失重吸热峰，对应于从板钛矿经锐钛矿到金红石的急剧转变。

TiO2 is known to exist in three distinct structures: two tetragonal phase for anatase and rutile and a third orthornombic phase for brookite. Rutile has the most stable structure and physical and chemical properties. In rutile structure oxygen cavities move quickly so that rutile has better gas sensing respond and become a chief material use for oxygen gas sensors.

其中金红石结构是最为稳定的晶型，不但具有最为稳定的物理、化学性能，而且在金红石结构中，晶格中氧空位的迁移率较高，因而TiO_2金红石结构气敏响应效应较好，从而使金红石结构TiO_2氧化物材料成为氧敏传感器的首选材料之一。

Nanosized titania particles consisting of anatase, rutile and brookite phases were synthesized under solvothermal conditions with different alcohols as solvents, hexamethylene tetramine as precipitant as well as precursor of titanium trichloride.

采用不同的醇溶剂，以六亚甲基四胺为沉淀剂，以TiCl3为前驱体，通过溶剂热的方法控制合成出纳米级的锐钛矿型、金红石型和板钛矿型的二氧化钛。

Under the visible light catalysis, along with hard content's increase, the methyl orange degeneration rate increases gradually, when TiO2/the Fe2O3 compound proportion is 20:2, has the anatase structure catalysis effect to be best, the degeneration rate achieves 87.2%, but when the compound proportion surpasses 20:2, the degeneration rate drops.

在可见光的催化下，随着铁含量的增加，甲基橙的降解率逐渐增加，TiO2/ Fe2O3复合比例为20：2时，具有锐钛矿型的结构催化效果最佳，降解率达到87.2%，而当复合比例超过20：2时，降解率有所下降。

He TiO_2 crystal grains conglutinate and distribute uniformly on slide in the form of multi-crystal anatase phase.

iO_2晶粒以多个锐钛矿相晶体(晶粒在10nm左右)的形式附着在玻璃片上，且分布相对均匀。

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。