含低价硫芳硝基化合物催化氢转移还原制备芳香胺

在自制耐低价硫催化剂存在下,以水合肼为氢给体,对5种含硫芳硝基化合物的催化氢转移还原进行了研究.结果表明,催化剂表现出极高的活性,反应在20-50min完成,仅消耗理论量的水合肼,产率97%～99%.     

合成方法对Span产品的结构和组成的影响

采用高效液相色谱（ＨＰＬＣ）对一步法工业品、分步催化法和两步法国外样品进行组成分析，考察了不同合成方法对产品的组成及结构的影响。     

蛋乳发酵工艺的研究

利用灭菌的蛋液中加入无菌的鲜乳,进行发酵,制成凝固型发酵蛋乳,通过实验确定蛋乳发酵的最佳工艺条件为发酵周期3.5 h,初始糖浓度为9%,蛋液加入量为8%,接种量为3%。     

NaOH气液两相滑动弧放电处理含硫废气的研究

为了提高气液两相滑动弧放电对火电厂废气的处理效率,将传统的纯水液相替换成NaOH溶液。通过观测放电过程中的电压-电流波形和发射光谱,研究加入NaOH对滑动弧放电的电气特性和光学特性的影响。选取SO_2作为待处理废气,对比分析NaOH溶液、纯水液相下SO_2的去除率以及产物浓度随处理时间、气体流速的变化情况,以及NaOH溶液浓度对SO_2去除结果的影响。实验结果表明,相同条件下,NaOH溶液代替纯水液相增强了气液两相放电强度,电离出更为大量的OH自由基;同时,NaOH的加入使SO_2的去除率提高了5%~7%,产物中的SO3含量较纯水液相时降低了50%左右。     

Effects of Fullerene Bisadduct Regioisomers on Photovoltaic Performance

Fullerene bisadducts have emerged as promising electron‐accepting materials because of their ability to increase the open‐circuit voltage (V_OC) of polymer solar cells (PSCs) due to their relatively high lowest unoccupied molecular orbital (LUMO) energy levels. It should be noted that the as‐prepared fullerene bisadducts are in fact a mixture of isomers. Here, the effects of fullerene bisadduct regioisomers on photovoltaic performance are examined. The trans‐2, trans‐3, trans‐4, and e isomers of dihydronaphthyl‐based [60]fullerene bisadduct (NCBA) are isolated and used as acceptors for P3HT‐based PSCs. The four NCBA isomers exhibit different absorption spectra, electrochemical properties, and electron mobilities, leading to varying PCE values of 5.8, 6.3, 5.6, and 5.5%, respectively, which are higher than that based on an NCBA mixture (5.3%), suggesting the necessity to use the individual fullerene bisadduct isomer for high‐performance PSCs.     

关于工业企业噪声监测的探讨

分析了噪声的危害性，建议企业选择适合自己的噪声监测和治理方式，以真正达到减少职业病的目的。     

Solvent additive control of morphology and crystallization in semiconducting polymer blends

4-bromoanisole is used as a very versatile processing additive to control the phase separation and phase purity of organic photovoltaic devices. Polymer-polymer blends based on P3HT as donor and a wide range of acceptor materials (F8TBT, PCDTBT,…?) are investigated. The additive promotes the aggregation of P3HT which improves the morphology for both initially mixed and demixed blends.     

Submicrometer-scale ZnO Composite Aggregate Arrays Photoanodes for Dye-sensitized Solar Cells

Submicrometer-scale ZnO composite aggregate arrays of nanorods and nanoparticles were prepared by simple wet-chemical route and studied as dye-sensitized solar cells（DSSCs）photoanodes.The ZnO composite aggregate arrays significantly improved the efficiency of DSSCs due to their relatively high surface area,fast electron transport,and enhanced light-scattering capability.A short current density(J_sc)of 11.7 mA/cm² and an overall solar-to-electric energy conversion efficiency（η）of 3.17%were achieved for the ZnO composite aggregate DSSCs,which were much higher than those obtained for the monodisperse aggregate DSSCs (J_sc=6.9 mA/cm²,η=1.51%)and ZnO nanorod array DSSCs(J_sc=4.2 mA/cm²,η=0.61%).