溶胶

In this dissertation, the hydrosol of MoO3 was prepared by precipitation method. The effect factors on hydrosol were discussed systematically.

本文采用沉淀法制备了三氧化钼纳米粒子水溶胶，并对制备水溶胶的条件进行了系统地研究。

The effect of the hydrosol on the photocatalytic degradation rate of methyl orange dye under sunlight was investigated,and the degradation rate was high.

于低温条件下(70℃)制备了纳米TiO2溶胶，研究了在日光照射下，纳米TiO2溶胶对甲基橙降解率的影响条件。

Due to surface modification, the size of CdS nanoparticles is easily controlled, and the obtained hydrosol or organic sol is more stable.

由于表面修饰，使得CdS纳米粒子的尺寸易于控制，所得水溶胶或有机溶胶更加稳定，还能够得到可再分散的纳米粒子粉末。

B. Several methods to synthesize 〓 or CdS nanoparticle have been compared,and a new method for preparation of 〓 hydrosol has been given by which thenanaoparticle were stable, well-distributed and size-controllable.

研究比较了几种制备〓和CdS纳米粒子水溶胶的方法，并提出一种全新的制备〓水溶胶的方法，该方法操作简单、不引进任何有机杂质、粒径均匀、大小可控并能够长期稳定，明显优于其它几种普遍使用的方法。3。

The Diels-Alder cycloadditions of [60] fullerene for preparation of optical limitingmaterials are discussed in chapter 3 and 6. Soluble cycloaddition derivatives of 〓aresynthesized by the reaction of 〓 with indene,1,1'-biindene andcyclopentadiene derivatives.〓Particular, the Diels-Alder cycloaddition of 〓 with1,1'-biindene under controlled conditions affords the stable monoadduct 〓〓of novel structure, which was confirmed by HPLC, FTIR, FD-MS,〓NMR,〓 NMR, HMQC and HMBC spectra, Its two bridgehead cage carbons resonate at70.91ppm, The 〓 NMR spectra showed 38 lines consistent with the 〓 symmetryassociated with [6,6] addition. The 〓 shows similar optical limitingproperties to that of 〓 in toluene for 8ns laser at wave length 532nm. Moreover, thehigh solubility of this adduct in polar solvents such as THF, acetone enables itsincorporation into sol-gel glass matrix. The thin films prepared via the sol-gel methodshow improved OL behaviour compared to those of 〓. The langmuir-Blodgett filmformation and uv-visible absorption of 〓 are also investigated. LBmonolayer of this compound is prepared on the air-water interface at 〓 mol/l. In chapter 4, three water-soluble derivatives of [60] fullerene: fullerol(1), theaddition product (2)of fullerol (1)with polyvinylpyrrolidone and fumaric acidderivative of 〓(3) are synthesized and characterized.

通过Diels-Alder环加成反应，用茚〓和1，1'-联茚〓及取代茂合成了一系列可溶性的〓环加成衍生物，发现可控制反应条件，使1，1'-联茚与〓反应，并高产率地得到具有新颖结构的单加成物，用HPLC、FTIR、FD-MS 及〓、HMQC、HMBC等多种波谱技术对其结构进行表征，测得它的两个〓杂化的桥头碳的化学位移为〓ppm，证明生成的衍生物为6∶6闭式环加成，〓NMR谱中共给出38个信号，表明〓联茚衍生物分子具有〓对称性；在波长532nm，脉冲宽度8ns的激光下，〓联茚衍生物的甲苯溶液的光限幅性能与〓的甲苯溶液相近，由于〓联茚单加成衍生物熱稳定性好，在四氢呋喃，丙酮等极性溶剂中溶解性好，能分别均匀地掺入溶胶-凝胶中，已发现它的溶胶(so1)光限幅性能优于纯〓的光限幅性能；使用Langmuir-Blodgett技术将〓联茚衍生物在空气和水的界面进行了LB单层膜和多层膜实验以及UV-Vis吸收谱研究，通过等温压缩曲线测试，证明浓度为〓〓时，〓联茚衍生物能够形成单层膜。

TiO_2 sol-gel can be used toprepare coated TiO_2 films. The TiO_2 thin films are lubricous, uniform and transparentand there is no desquamation substance.

本文做的研究和结果主要有：(1)本实验制备的纯纳米TiO_2溶胶-凝胶溶液有良好的稳定性能；用此溶胶制备的玻璃弹簧负载型TiO_2薄膜分布均匀，薄膜透明，无剥落物。

Surfactant microemusion is added to the Sol gel process to obtain smaller size PbS microcrystal with narrower size distribution.

复合体系的溶胶凝胶转变点可通过对复合溶胶粘度随时间变化的观测而确定。

Molybdenum trioxide sol and gel were prepared via reaction metal Mo powder with peroxo-hydrate solution and they could turn into blue color when irradiated by high pressure mercury lamp.

通过金属钼粉与过氧化氢溶液反应制备三氧化钼溶胶和凝胶，在高压汞灯的照射下，溶胶和凝胶由浅黄色变成蓝色。

Solvent can be added to plastisol coating to lower the viscosity, producing organosol coatings.

可加入溶剂到塑性溶胶涂料中以降低它的粘度，形成有机溶胶涂料。

In this thesis, the hydrosol of CeO2 nanoparticles. the transparent organosol of CeO2 nanoparticles and CeO2 nanoparticles coated with DBS have been first prepared by colloidal chemical method, The CeO2 nanoparticles with various particle sizes were obtained by different calcination temperature.

本文首次采用胶溶法合成了CeO_2纳米水溶胶、透明的CeO_2纳米有机溶胶、表面包覆DBS的CeO_2纳米粒子，将该粒子在不同温度下进行热处理得到不同粒径的CeO_2纳米晶。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失