弱酸性、中性染料对氨纶的染色及其在氨纶上的吸附等温线

通过测试中性染料和不同结构的弱酸性染料在氨纶上的上染率，分析染料结构与上染率的关系，并且研究了1：2金属络合染料在氨纶上的吸附规律，并运用Langmuir和Nernst二元吸附模型对吸附等温线进行了分析。     

多相催化氧化法处理染料废水的研究

以酸性大红为处理对象对多相催化氧化处理工艺的催化剂进行了研制工作．结果表明，过渡金属氧化物中CuO有较高的催化活性，Mn、Ni等金属的氧化物几乎无催化活性；采用沉淀法制备的催化剂的催化活性要比采用浸渍法制备的催化剂高，加入少量的K20有较好的助催化作用，而Ni却有明显的负催化作用．对于COD为632．5mg／L的染料废水，在H2O2投加量为6ml／L时，COD去除率超过70％，色度去除率达99％．     

光催化氧化降解染料中电子转移体的选择

利用两种不同的催化剂，进行了不同光源和不同电子转移体时光催化氧化降解甲基橙和工业染料的实验。用O2作为电子转移体时，催化剂降解效果很低；但以H2O2作为电子转移体时，催化剂在太阳光照射下仅需20min左右就可使甲基橙的降解效果达90％，对浓度为100mg／L的实际工业染料，可达50%-60％的COD去除率和接近完全脱色的效果。通过实验结果得出：电子转移体对电子的有效转移对光催化氧化过程的重要性，并评价出H2O2是比O2更有效的电子转移体。     

多级染料激光放大器中激光增益与放大自发辐射强度的理论研究

利用激光增益和放大自发辐射 (ASE)理论 ,对不同条件下的染料激光放大器的激光增益和ASE强度进行了数值计算。分析了当入射光强远小于和大于有效饱和光强时 ,激光增益和ASE强度与入射光相对强度的关系 ,讨论了在两种条件下ASE系数以及染料池端面反射系数对激光增益和ASE成分的影响。最后利用这些结果 ,对连续激光的多级染料放大系统的优化设计进行了讨论。     

Dye linked conjugated homopolymers: using conjugated polymer electroluminescence to optically pump porphyrin-dye emission

Zinc-porphyrin dye molecules were incorporated into the backbone of a conjugated polymer material by a method, which allowed for the incorporation of only one zinc-porphyrin dye molecule into the backbone of each conjugated polymer molecule. The electronic properties of the homopolymer were established using ultraviolet photoelectron spectroscopy (UPS) for the determination of the electronic energy levels and the injection barrier for holes into the valence band. Pulse radiolysis time resolved microwave conductivity (PR-TRMC) was used to determine the sum of charge carrier mobilities. Electroluminescent devices of the homopolymer itself and of the zinc-porphyrin containing polymer were prepared and the nature of the electroluminescence was characterized. The homopolymer segments were found to optically pump the emission of the zinc-porphyrin dye moities. The homopolymer exhibits blue-green emission and the zinc-porphyrin linked homopolymers emit near-infrared/infrared light. This was demonstrated to be due to electroluminescence pumping of the zinc-porphyrin moieties that were covalently linked to homopolymer material. When only one zinc-porphyrin dye was incorporated into the backbone of each homopolymer molecule complete suppression of homopolymer electroluminescence was observed with exclusive near-infrared emission.     

纳米抗菌锦纶的染色性能

为了探讨纳米材料对锦纶染色性能的影响，在相同条件下，用尼龙费林上染纳米抗菌锦纶和普通锦纶，测试了二者的上染百分率，并对染色前后纳米抗菌锦纶进行扫描电镜分析。结果表明，纳米抗菌锦纶的上染百分率小于普通锦纶，但是二者的显色情况相近；染色后，纳米抗菌锦纶表面的纳米颗粒明显减少，说明染色时有纳米颗粒从锦纶表面脱落。     

Effect of acidic additives on the structure and performance of TiO2 films prepared by a commercial nanopowder for dye-sensitized solar cells

This work comprises an experimental study on the effect of various dispersing agents on the morphology of mesoporous TiO₂ films prepared by the doctor blade method and on the performance of the resulting dye-sensitized solar cells. TiO₂ films were prepared using a commercial nanopowder, Degussa P25, which was ground in a mortar, with different dispersing agents and under continuous grinding, in order to break the large agglomerates (>1 μm), present in the powder. These additives can be different acids or bases and must prevent also re-agglomeration of the nanoparticles, by forming a surface charge.Two strong acids (hydrochloric, HCl and nitric, HNO₃), a weak one (acetic acid, CH₃COOH) and a ketone (acetylacetone, C₅H₈O₂) were used in turn. The properties of the films were dependent on the concentration and the kind of the acid. With increasing concentration the coagulation of the nanoparticles also increases, thus affecting the efficiency of the devices. Of all the additives used, HNO₃ gave the best results and a 40% increment in efficiency was observed, compared to the standard dispersing agent that is acetylacetone. The improved homogeneity of the nanoparticle size (24 nm for anatase and 21.5 nm for rutile) and the better connectivity between them were responsible for the improvement in efficiency.     

Extraction of anionic dyes with ionic liquid–nonionic surfactant aqueous two-phase system

The cloud point of nonionic surfactant (Triton X-114) in ionic liquid ([Bmim]Cl) aqueous solution exhibits as increase and then decrease and increase again with the increase of ionic liquid (IL) content, which is the origin of an IL–nonionic surfactant aqueous two-phase system. The nonionic surfactant-rich phase coexists with a high content of IL aqueous solution phase in the IL–nonionic surfactant aqueous two-phase system. The partitioning of various ionic dyes indicates that anionic species exhibit a high partitioning coefficient between the IL-rich phase and the nonionic surfactant-rich phase.     

Preparation of dye sensitized titanium oxide nanoparticles for solar cell applications

A new method for synthesis of titanium dioxide (TiO₂)-dye nanoparticles is reported. TiO₂ nanocrystals were obtained at 150 and 200 °C by using chemically bonded TiO₂-sensitizer dye as a precursor. Titanium tetraisopropoxide was first modified with a dye molecule and then precipitated by dropping into acidic water. A strongly colored precipitate was obtained. Hydrothermal growth of a colloidal solution was carried out in a Teflon-lined stainless steel autoclave. Dye sensitized solar cell efficiencies obtained were comparable and fill factor values were close to the analogous cells prepared by the use of conventional TiO₂ paste techniques. This method allows the use of different substrates together with nanocrystalline TiO₂ for many technological applications.