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11.
Coral reef-like PANI nanotubes composed of nanopaticles were successfully synthesized by a reactive template of manganese oxide.The structure was characterized by using SEM,TEM,and FT-IR,and the supercapacitive behaviors of these nanotubes were investigated with cyclic voltammetry(CV),and charge-discharge tests,respectively.A maximum specific capacitance of 533 F/g could be achieved in 1mol/L aqueous H2SO4 with the potential range of -0.2 to 0.8 V(vs.the saturated calomel electrode) in a half-cell setup configuration for PANI electrode,suggesting its potential application in the electrode material for electrochemical capacitors. 相似文献
12.
Hongyan Liu Ruixia Yan Riguang Zhang Baojun Wang Kechang Xie .Key Laboratory of Coal Science Technology of Ministry of Education Shanxi Province Taiyuan University of Technology Taiyuan Shanxi China .College of Chemistry Chemical Engineering Shanxi Datong University Datong 《天然气化学杂志》2011,20(6):611-617
A density-functional theory(DFT)method has been conducted to systematically investigate the adsorption of CHx(x=0~4)as well as the dissociation of CHx(x=1~4)on(111)facets of gold-alloyed Ni surface.The results have been compared with those obtained on pure Ni(111)surface.It shows that the adsorption energies of CHx(x=1~3)are lower,and the reaction barriers of CH4 dissociation are higher in the first and the fourth steps on gold-alloyed Ni(111)compared with those on pure Ni(111).In particular,the rate-determining step for CH4 dissociation is considered as the first step of dehydrogenation on gold-alloyed Ni(111),while it is the fourth step of dehydrogenation on pure Ni(111).Furthermore,the activation barrier in rate-determining step is higher by 0.41 eV on gold-alloyed Ni(111)than that on pure Ni(111).From above results,it can be concluded that carbon is not easy to form on gold-alloyed Ni(111)compared with that on pure Ni(111). 相似文献
13.
Polymer-supported ruthenium complexes ■-Phen-Ru-①,■-Phen-Ru-②,■-Phen-Ru-③,■-Phen-Ru-④, ■-Phen-Ru-⑤,■-Phen-Ru-⑥and ■-Phen-Ru-⑦were prepared using aminomethyl polystyrenes of different morphological structures as supports.A variety of alcohols were oxidized efficiently into the corresponding ketones, carboxylic acids or aldehydes with iodosylbenzene (PhIO) catalyzed by aminomethyl polystyrene-supported ruthenium complexes under mild reaction conditions in acetonitrile.The influences of morphological struct... 相似文献
14.
ZENG Xi WU Chong DONG Lei MU Lan XUE SaiFeng & TAO Zhu College of Chemistry Chemical Engineering Guizhou University Guiyang China Key Laboratory of Macrocyclic Supramolecular Chemistry of Guizhou Province Guiyang 《中国科学B辑(英文版)》2009,(4)
A new tripodal rhodamine B derivative 2 was designed and synthesized by tripodal trialdehyde and rhodamine B hydrazide for the first time. This derivative could be used as a fluorescent chemosensor for the selective and sensitive determination of copper(II) in Tris-HCl buffer and ethanol aqueous mixed media. Under the optimum conditions described herein,fluorescence enhancement at 557/577 nm was linearly related to the concentration of copper(II) in the range of 0.10 to 10.00×10-5 mol·L-1,with a corre-latio... 相似文献
15.
A self-intermolecular cyclocondensation reaction of 3,4-dihydropyrimidine-2-thione(DHPM) to give a novel tricyclic structure containing DHPM core in the presence of diethyl azodicarboxylate(DEAD) and triphenylphosphine(TPP) at room temperature is reported. 相似文献
16.
TIAN Qing-ping LI Peng XIE Ke-chang .Key Laboratory of Coal Science Technology Ministry of Education Shanxi Province Taiyuan University of Technology Taiyuan P.R.China 《高等学校化学研究》2009,25(1)
In order to solve the drawback of poor bioavailability by the oral route and infusion-related side effect for Amphotericin B(AmB), microemulsion vehicles composed of isopropyl myristate(IPM), Tween 80, isopropyl alcohol and water for transdermal delivery of AmB were designed. The pseudo-ternary phase diagrams were constructed by the H2O titration method and the structures of the microemulsion were determined by measuring electrical conducti-vities(σ). The diffusion studies of AmB microemulsion were performed via excised rabbit skin on a drug diffusion apparatus. To obtain a high solubization of AmB, three different methods were tested to incorporate AmB into mi-croemulsion. The result suggests adding AmB in the shape of NaOH solution to the O/W blank microemulsion over the phase inversion temperature(PIT) of the emulsifier obtains the maximum drug content(2.96 mg/mL). The pH value of the system could be adjusted to pH8.5 or pH<5.2, in this range AmB molecules converts from aqueous to the hydrophilic shell of the microemulsion droplets, drug precipitate is no more than 5%, and the formulations were corresponding to the characterizations of microemulsion. At pH 5.14, AmB microemulsion with Km 1:1, O/SC 1:9(mass ratio ofoil phase to surfactant/cosurfactant blend), water content 64.6%, drug content (2.93±0.08) mg/mL,showed the maximum permeation rate(3.255±0.64)μg·cm-2·h-1,which is stable for a long time. 相似文献
17.
WANG Qilin ZHANG Yinghui QU Aiqin WANG Hairen XU Zhenguo College of Life Science Shandong University Jinan Rongcheng Hongyangshen Group Shandong Province 《Chinese Journal of Reactive Polymers》2001,(2)
1. INTRODUCTION Blood fat primarily contains cholesterol, cholesterol ester, phosphatide, triglyceride and free fatty acid in serum of human being and mammalian. Under physiological conditions, the lipids transport in the form of lipoproteins linked with the proteins. Except for the free fatty acid linked with albumin, the other lipids are linked with the globular proteins into high-density lipoproteins (HDL), low density lipoproteins (LDL), very low density lipoproteins (VLDL) and so… 相似文献
18.
Wen Yan HU Wen Ping XU Jian Gong SHI* Yong Chun YANG Guang Xiong ZHOU Institute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College Bejing Hospital of Jiu Quan District Gansu Province Jiuquan Dis 《中国化学快报》2001,(9)
Alangium, the sole genus in the family Alangiaceae, has a variety of about 20 species distributed in the tropical and subtropical area of the Eastern Hemisphere, and 13 species are known to occur in the south of China1. A. plantanifolium and A. chinense are used in chinese traditional medicine for the treatment of rheumatalgia, paralysis, cardianeuria, and wound2. Pharmacological studies of the extracts of these two species showed muscular relaxing activity, and anabasine was considered as t… 相似文献
19.
试制成功了热平衡时间短的解偏振光强度测定装置,用该装置测定了尼龙66,尼龙6和PET的结晶动力学数据,得到了满意的结果, 相似文献
20.
THE ADSORPTION BEHAVIORS OF TOLUENE ON HYPERCROSSLINKED RESINS 总被引:1,自引:0,他引:1
WANG Jingping FEI Zhenghao TANG Shuhe Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources Environmental Protection Yancheng Teachers College The Institute of Application Chemistry Environmental Engineering Yancheng City Jiangsu Province P. R. China 《Chinese Journal of Reactive Polymers》2005,(Z1)
1. INTRODUCTION Toluene has been widely used for many industrial purposes. Owing to their toxicity and recalcitrance, the presence of toluene in the natural environment, especially in the groundwater, has been a great concern. The removal of toluene is of… 相似文献