查询词典 anatase

Anatase nano-TiO2 sols were directly prepared at 60℃ by sol method with distilled water as solvent.

采用溶胶法，以水为溶剂，在60℃下合成了TiO2溶胶。

In other words,under the same reaction conditions,the larger the particle size of theprecursor mixed powder,the higher the temperature at which Zn_2TiO_4 starts to appear.There are structure similarity phenomena in ZnO-TiO_2 system,i.e.,the connectionmanner of TiO6 octahedra in the structure of ZnTiO_3 is similar with the one of rutile,andthe connection manner of TiO6 octahedra in the structure of Zn_2TiO_4 and Zn_2Ti_3O_8 issimilar with the one of anatase.

ZnO-TiO_2系统中存在一种类构现象，即：ZnTiO_3结构中的氧八面体的连接方式和金红石TiO_2的相似，而Zn_2TiO_4和Zn_2Ti_3O_8结构中的氧八面体的连接方式则和锐钛矿TiO_2的相似，并由此衍生出一个类构效应理论，即：ZnO和金红石TiO_2的反应产物中不应该出现Zn_2TiO_4和Zn_2Ti_3O_8当然，反应温度应低于ZnTiO_3的起始分解温度。

The adding of anatase nano-crystalline TiO_2 to the deposition solution accelerates the depositing of TiO_2 articles from the deposition solution on the silica glass fiber. A well-combined and durable TiO_2 thin film on silica glass fibers surface obtained by controlling the deposition temperature, deposition time, deposition cycles, concentration of the deposition solution, relative concentration of the deposition materials, pH value of the deposition solution. The effect of the deposition conditions, the drying conditions and the annealing treatment conditions on the surface morphology, section morphology, growth patterns, thickness of the deposited TiO_2 thin films were investigated. Growth rate and particle size of the thin films were controlled by the deposition conditions.

实验结果表明加入微量的锐钛矿型纳米TiO_2诱导晶可以使沉积液中析出的TiO_2粒子更大程度的以锐钛矿型纳米TiO_2粒子的形式析出；通过对沉积温度、沉积液中组分浓度及相对浓度、沉积溶液的pH值的调节与控制，从而控制沉积溶液中化学反应平衡的移动，研究了以上条件对沉积速率、沉积溶液中[Ti6]2–与—OH、[Ti6]2–之间的脱水聚合反应速率的影响，总结出了获得均匀致密质量较好的TiO_2薄膜的一系列实验参数，并对薄膜的生长模式进行了系统的分析研究；通过对沉积时间及沉积次数的分析，可以有效的控制TiO_2薄膜的厚度及质量；通过对薄膜的干燥条件及热处理条件的控制，可以使利用液相沉积法获得的TiO_2薄膜进一步晶化；并分析了对薄膜引起缺陷的主要原因。

The slightly negative δ^30Si values of both thick-bedded and anatase-rich siliceous rocks are similar to those of hydrothermal and biogenic siliceous rocks. The ranges and mean values of δ^18O values are similar.

两种硅质岩的δ^30Si值为变化较小的负值，与热水沉积和某些生物成因硅质岩的硅同位素组成相似，两者的δ^18O值范围和平均值均相似。

The results show that the white thick-bedded siliceous rocks have high contents of SiO2 and Al2O3 and high ratios of Al/ and Al2O3/(Al2O3+ Fe2O3). The ∑REE are low, and the North American shale-normalized REE patterns are characterized by enrichment of LREE and absence of Eu and Ce anomalies, which suggest that the white thick-bedded siliceous rocks might have been formed in the continental margin environment and affected significantly by terrigenous constituents. The anatase-rich siliceous rocks have high contents of TiO2, Fe2O3, Cu and V but low Al/(Al + Fe+ Mn) and Al2O3/(Al2O3 + Fe2O3) ratios. The ΣREE are high, the North American shale-normalized REE patterns are obviously characterized by left-oblique to flat styles of curves and slight negative Ce anomalies, implying that they might have been formed in an oceanic ridge environment.

研究结果表明，呈厚层状产出的无矿白色硅质岩具较高的SiO2、Al2O3含量及Al/、Al2O3/(Al2O3+Fe2O3)比值，稀土元素总量很低，其北美页岩标准化配分模式为向右倾的曲线，无明显铈异常和铕异常，表明其形成于受陆源影响的大陆边缘构造环境；赋矿岩系中薄层状富钛硅质岩的TiO2、Fe2O3、Cu、V含量较高，但Al/、Al2O3/(Al2O3+Fe2O3)比值较低，稀土元素总量较高，北美页岩标准化曲线为明显左倾型－平坦型，具弱的负铈异常，表明其形成于洋脊及附近环境。

The result show that the N elements curbed the transition from anatase phase to rutile phase , Doped-N was in the structure of the TiO2 as the form of Ti-O-N and formed a new bond energy level;N-doped changed the paramagnetic of the characteristics. The paramagnetic resonance spectrum of TiO2 showed anisotropic and showed hyperfine splitting, The Lande factor of Ti3 + combined with the N is 1.956. UV-Vis absorption spectra showed that the photocatalytic ability of photocatalyst TiO2-xNx to expand to the visible region, the sample (3.84wt %) has the highest photo catalytic activity, the adsorption edge extend to 520nm and degradation is 55.54% under the visible light for 1.5h.

研究结果显示，N元素抑制了锐钛矿相向金红石相的转变，阻止了晶粒的长大，掺杂的N元素以O-Ti-N的形式存在于光催化剂结构中，形成了新的能级结构；N掺杂改变了催化剂的顺磁特征，使TiO2的顺磁共振谱线呈现各向异性，发生了超精细分裂，其中g2=1.956，是与N结合的Ti3+的朗德因子；紫外可见光吸收谱表明，催化剂TiO2-xNx的光响应能力拓展到可见光区，光吸收带发生红移；光催化测试结果显示，掺杂量为3.84的TiO2-xNx在可见光区的响应能力最高，吸收波长延伸至520nm，其光催化活性最大，1.5h降解率达到55.54%。

Quantitative analysis of the EXAFS spectra showed that the microscopic structure of Znon anatase TiO2 is four coordinate complex, and there are at least two types of bonding based on the average Ti-Zn distances in the second sphere. Two different geometry configurations of single-corner and double-corner for adsorption on the (101) surface cluster were calculated using DFT method.

EXAFS结果表明，Zn在吸附时由自由水合状态下的Zn-O六配位八面体结构向四配位四面体结构转化，中心Zn原子的第二配位层存在两种不同的Zn-Ti距离（R1=0.371和R2=0.332nm）。

The catalyst support contains at least 20% by weight of TiO2 being present mainly in the anatase form. Furthermore, the catalyst support contains diatomaceous earth in an amount of at least 2% and less than 80% by weight of the catalyst support.

催化剂载体含有至少20重量％的主要以锐钛矿型存在的TiO2，而且催化剂载体中含有至少为2重量％，且小于80重量％的硅藻土，以催化剂载体重量计。

The results show that perfect anatase nanocrystalline TiO2 can be obtained by SGRTSE method and the photocatalytic activity of TiO2 can be improved by doping and surface treatment. In the experimental system, the addings of proper salts are beneficial to the photocatalytic degradation of DBSNa. The pH value of solution, adding amount of TiO2, flow rate of air, and initial concentration are the main influence factors for the photocatalytic degradation of methyl orange, and the apparent reaction order is pseudo-first-order, which could be described by Langmuir- Hinshelwood equation.

结果表明：sol-gel法结合室温溶剂蒸发诱导可制备出晶型良好的锐钛型纳米TiO_2；过渡元素和稀土元素杂原子掺杂，贵金属掺杂和表面酸化处理是有效提高TiO_2光催化活性的途径；试验体系中，在DBSNa的降解过程中加入适量的盐，可以大大加速降解效果；光催化降解水中有机物，溶液pH值，TiO_2投加量，曝气速率，被降解物起始浓度等是影响降解效果的重要因素；对起始浓度较低的有机物光催化降解过程可利用简化的Langmuir-Hinshelwood动力学方程进行描述，反应级数为拟一级。

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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。