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However its large band gap energy limits its practical application in the case of natural solar light.

而阻碍其应用的是它的大禁带宽度不能有效地利用太阳光,因此研究开发对可见光响应的二氧化钛就成为当前光催化别研究中的关键课题。

The research of this dissertation can not only be applied in preparation of titanium dioxide used in synthetics fiber, but also have important significance to improve general product quality of anatase and to exploder the other variety of titanium white such as titanium white slurry, titanium white with catalyze, titanium white used in food and so on.

本文的研究成果不但成功地应用于化纤钛白的制备,同时对提高一般锐钛钛白的产品质量。开发其它钛白品种(钛白水浆、光催化钛白、食品钛白)等具有重要的意义。

Results show a 7 cm2 annealed TiO2 flower-like nanostructure having the degradation rate of RhB as fast as 29.8 times that of the dye solution exposed to ultraviolet light alone.

结果表明7 cm2的退火后的类花状纳米TiO2降解染料分子的光催化效率是仅用紫外光降解的29.8倍。

Results show a 7 cm2 annealed TiO2 flower-like nanostructure having the degradation rate of RhB as fast as 29.8 times that of the dye solutiun exposed to ultraviolet light alone.

结果表明7 cm2的退火后的类花状纳米TiO2降解染料分子的光催化效率是仪用紫外光降解的29.8倍。

A novel photocatalytic reactor, which can use sun light and graniform photocatalyst, was developed and evaluated. Hydraulics studies show that the actual mean residence time was approximately 1. 5 to 2 times greater than the theoretical mean residence time, which is of great advantage for degrading the pollutants in the reactor, and that the high reaction rate can be obtained by increasing the rotational speed.

设计了一种新型提升式圆盘多相光催化反应器(exalting round-platephotocatalytic reactor,ERPPR),该反应器的主要特点是能够利用太阳光和粒状催化剂,通过对ERPPR水力学特性的研究发现,该反应器的实际平均水力停留时间约为理论平均停留时间的1.5到2倍,反应器内循环流量与提升桨转速成正比。

These methods include a photocatalytic degradation of methyl orange solution-spectrophotometric method to measure the degradation rate of organic matter by self-cleaning glass, a UV-Vis spectrophotometric scanning procedure to measure the transmittance and a hydrophility measuring method by using a contact angle meter.

详细研究了用以表征自洁净玻璃主要性能的各种测定方法:采用紫外光辐照降解甲基橙-分光光度法测定自洁净玻璃对有机物的降解效率即光催化活性;利用紫外可见光分光光度计扫描测量其透过率光谱曲线;用接触角测定仪测量其样品表面的亲水性。

The columnar-like structure with preferred orientation exhibits higher photocatalytic efficiency, since the columnar structure has larger surface area.

在常压下制备的样品的光催化效率比在低压下制备的样品提高了两倍。

The influence of doped cerium amount and heat-treat ment temperature on the photocatalytic degradation efficiency of TiO2 film for oleic acid was investigated by high pressure liquid chromatography, ultraviolet -visible spectrophotometer and scanning electron microscope.

利用高压液相色谱、紫外-可见光分光光度计、扫描电镜和能谱仪手段对掺杂铈的TiO2薄膜进行了表征,考察了掺杂铈对油酸光催化降解效率及TiO2薄膜表面晶粒分布的影响,并对薄膜的化学成分进行了定性和定量分析。

Then chemical oxygen demand and total phosphorus were determinated by nano-semiconductor oxide photocatalytic method.

其次,将纳米半导体光催化氧化体系用于化学需氧量和总磷的测定,进行了有关理论探讨和实际应用的研究,取得了满意的结果。

The TiO2 thin film on quartz glass is prepared by Liquid Phase Deposition method. The thicknesses of the films are determined by a spectrophotometer. The influence factors on the thicknesses such as ultrasonic vibration, times of sedimentation, sedimentation time and concentration of TiO2 colloid are investigated. A mathematical model of sedimentation is set up on the basis of gas adsorption theory.A photocatalytic continual tub reactor is set up.

本论文介绍了纳米TiO_2光催化降解甲醛的机理;用液相沉积法在石英基片上制备出纳米TiO_2薄膜,利用分光光度计间接测量TiO_2薄膜厚度,研究了超声波震荡、胶体浓度、沉积时间及沉积次数对薄膜厚度的影响;借鉴气体吸附理论,初步建立了制备TiO_2薄膜的沉积动力学模型。

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