光催化的

The effects of shape, size of TiO〓 particles on the photocatalytical properties were studied.

设计了可方便测定量子产率的光解水催化反应装置，考察颗粒形状、大小等因素对光解水制氢催化作用的影响。

Nanosized CPF(Conjugated Polymer of Furfuryl alcohol)/ZnO composite catalyst was prepared through in-situ polymerization and heat conversion. The thermal stability, morphologies, size, structure and optical absorption properties of the CPF/ZnO material were characterized by TG-DTA, TEM, XRD, XPS, IR and UV-Vis techniques.

通过原位聚合-热转化两步法，利用ZnO纳米微粒和糠醇制备出了具有大共轭结构的高分子和ZnO的纳米复合催化材料；用TG-DTA、TEM、XRD、XPS、IR和UV-Vis等技术对其热稳定性、形貌、尺寸、结构及吸光特性等进行了表征，以亚甲基蓝溶液的催化降解研究了该材料在自然光条件下的催化性能。

Through a self-designed lightproof intermittent reactor, homogenous oxidation kinetics of sodium sulfite was studied under uncatalyzed, catalyzed and inhibited conditions, respectively.

本文在均相条件下，通过自行设计的避光间歇式反应器，对亚硫酸钠非催化氧化、催化氧化和抑制氧化的本征反应动力学进行了实验研究。

Mechanistically, the photocatalytic processes are based on the electron transfer from a excited dyes to the conduction band of TiO〓 semiconductor and subsequent some reactions such as the further reaction of injected electrons with adsorbed oxygen and complicated decomposition processes of dye cationic radicals to lead to dye degradation or mineralization, which offers a feasibility of utilizing inexpensive visible light or most part of solar spectra to treat dye pollutants.

其光催化过程的机理为：染料在可见光下被激发，电子从激发态染料传输到TiO〓半导体的导带，随后发生一系列的反应，如注入的电子与吸附的氧反应以及染料正碳自由基复杂的分解反应导致了染料的降解和矿化，这就为利用廉价的可见光或太阳光中的大部分可见光谱来处理染料污染物提供了可能。

The high activity can be attributed to the following factors: 1 Because of the perovskite structure of the host materials, the positive and negative electric charge center is not superposable, and there is a electric field which can separate the photo generated electrons and holes efficiently in the microscopic field.

以层状基质热稳定性分析为依据，经过对制备方法的优化，在不同温度下进行硫化处理，在对催化剂进行产氢性能研究时发现，在以硫化钠和亚硫酸钠为牺牲剂的产氢体系中，插入硫化镉的复合层状催化剂负载一定量铂以后，具有较高的连续的光催化分解水的能力。

The results show that the sample prepared by coprecipitation method exhibits the highest activity and has the largest crystallite size, and after reaction for 140 min, 53.6% of rhodamine B is decolored; while for catalyst prepared by the citric acid complexation, the decoloration ratio is only 9.0%, though the latter has a higher surface area and smaller crystallite size than the former.

研究结果表明：这4种方法均能制备单一的钙钛矿型LaFeO3催化剂，其中，共沉淀法制备的催化剂具有最大的晶粒尺寸，最小的比表面积，仅为0.4 m2/g，显示出最强的光催化活性；在可见光照射下反应140 min，罗丹明B的脱色率达到53.6%。柠檬酸络合法制备的催化剂的比表面积最大，为8.1 m2/g，但其脱色率仅为9.0%。

The technological condition of preparation of mesh TiO〓/Ti catalyst was optimized by means of XRD and SEM with the analysis of effects of dyes photoelectrocatalytic degradation. The diameter of TiO〓/Ti catalyst particle was nanometer level The effects of bias voltage and light intensity on the process of photoelectrocatalytic oxidation, the adsorption property of electrode surface, the extent of mineralization of rhodamine B and rose bengal were investigated using mesh TiO〓/Ti as catalyst of photoelectrocatalytic oxidation system.

利用拉曼光谱和XRD等测定手段并结合染料的光电催化降解效果的分析，优化了丝网TiO〓／Ti催化剂制备的工艺条件，研制出高效丝网纳米级TiO〓／Ti催化剂，并将该催化剂用于光电催化氧化体系，研究了氧化体系中外加偏压、光强等因素对光电催化氧化过程的影响以及催化剂的表面吸附性能、染料若丹明B和虎红在光电催化氧化过程中的矿化程度。

Transition metal borides and inorganic boron-containing compounds, such as TiB〓, BN, B〓C and BP, are one of the most important groups for application in high-temperature performance, electronics and catalysts. Traditionally, they were prepared by high-temperature reactions; however, the products were beyond nanometer scale.

中文题名溶剂热合成硼化物及非金属含硼化合物纳米材料副题名外文题名论文作者谷云乐导师钱逸泰学科专业无机化学研究领域\研究方向学位级别博士学位授予单位中国科学技术大学学位授予日期2003 论文页码总数70页关键词纳米材料硼化物溶剂热合成馆藏号BSLW /2003 /O613 /6 硼化物、非金属含硼化合物功能材料（如硼化钛、氮化硼、碳化硼和磷化硼等）通常具有高硬度、高熔点、机械强度大、高温化学稳定性好等一系列优良性能，有些还具有奇异的光、电、磁、热学性能和催化活性，是一类最富潜力的非氧化物高温结构材料、电子材料和催化材料。

It is found that TiO2/pillared MMT (TiO2/MMT) composite catalyst exhibits the best degradation activity to methylene blue and methyl orange compared with other semicondutors/MMT, such as SnO2/MMT, Fe2O3/MMT and Cu2O/MMT with different energy gaps that is closely correlated with the formation of stable pillar stucture and appropriate energy gap in the TiO2/MMT.

在对具有不同能带宽度的TiO2、SnO2、Fe2O3和Cu2O四种半导体/蒙脱土复合催化剂的研究中，发现TiO2柱撑蒙脱土(TiO2/MMT)对亚甲基蓝和甲基橙有最好的光催化降解活性，这是与其形成稳定的层柱结构和TiO2具有合适的能带宽度密切相关的。

In these paper, ultrasonic degradation of methyl orange by adding lower concentration of CCl4 and effects of organic specials on photocatalytic reduction of hexavalent chromium over different TiO2 photocatalysts have been explored, the results are as follows:(1) Effects of CCl4 were investigated on the ultrasonic degradation of azo dye methyl orange.

本文主要研究了低浓度的CCl4对超声降解甲基橙的影响及有机物对不同TiO2催化剂光催化还原Cr的影响，研究结果如下：(1)研究了低浓度的CCl4对超声降解MO的影响，结果表明少量的CCl4能促进MO的超声降解。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！