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以Ba(NO3)2、NaBH4、Er2O3和CeO2为原料, 在十六烷基三甲基溴化铵(CTAB)表面活性剂辅助下, 采用水热法制备了β-BaB2O4 (β-BBO)纳米棒, 稀土离子Er3+单掺杂的β-BBO(β-BBO:Er3+)及Er3+和Ce3+/Ce4+共掺杂的β-BBO(β-BBO:Er3+/Ce3+/Ce4+)纳米棒. 通过X射线粉末衍射(XRD)、傅里叶变换红外(FTIR)光谱、拉曼...
Antioxidant and anticholinesterase constituents of Salvia poculata
Salvia poculata Lamiaceae antioxidant activity anticholinesterase activity
2010/4/8
Two triterpenoids, namely 2a,3a-dihydroxy-24-nor- 4(23),12-oleanadien-28-oic acid (1) and ursolic acid (2); 4 flavonoids, namely 5-hydroxy-7,4'-dimethoxyflavone (3), cirsimaritin (4), eupatilin (5), a...
Synthesis, characterization, and antibacterial activity of some transition metals with the Schiff base N-(2-furanylmethylene)-3-aminodibenzofuran
Schiff base metal complexes antibacterial activity
2010/4/8
This paper presents the structure and antibacterial properties of some complexes of Co(II), Ni(II), Cu(II), Zn(II), Cd(II), and Hg(II) with a new Schiff base N-(2-furanylmethylene)-3- aminodibenzofura...
Acoustical Studies of Schiff Bases in 1,4-dioxane and Dimethylformamide at 308.15 K
Density Viscosity Ultrasonic velocity Schiff bases 1,4-dioxane Dimethylformamide
2009/12/25
Density, viscosity and ultrasonic velocity of solutions of four Schiff bases in 1,4-dioxane and dimethylformamide (DMF) were measured at 308.15 K. Various acoustical properties such as specific impeda...
以三辛基膦(TOP)为单一配位溶剂, 二水合乙酸镉和硫粉为前驱体, 用高温热解的方法制备CdS纳米棒. 通过X射线衍射(XRD)、透射电镜(TEM)、高分辨透射电镜(HRTEM)、紫外-可见(UV-Vis)分光光度计、荧光(PL)光谱、傅里叶变换红外(FTIR)光谱和核磁共振磷谱(31P NMR)等方法对样品的结构、形貌和光学特性进行了表征. 考察了前驱体Cd/S摩尔比和反应物浓度对硫化镉纳米结构...
应用扩展X射线吸收精细结构(EXAFS)光谱研究了CuCl2水溶液中Cu2+的区域环境结构, 通过测定CuCl2水溶液在不同浓度条件下及冷冻-解冻(FT)处理前后Cu K边EXAFS 吸收谱, 研究了浓度及冷冻-解冻处理对Cu2+第一配位层结构的影响. EXAFS实验结果表明, CuCl2水溶液中Cu2+第一配位层距离中心原子Cu最近邻原子为O原子, 配位数介于3.0-4.3之间, Cu—O键长在...
Mo-Ni-γ-Al2O3体系中Mo、Ni近邻结构的EXAFS研究
EXAFS 钼镍双金属体系 加氢脱硫反应
2009/12/9
Mo-Ni-γ-Al2O3体系中Mo、Ni近邻结构的EXAFS研究。