Microsized single-crystalline Co3O4 has been synthesized by high-temperature hydrolysis of CoCD2H20 at 600℃. The samples were characterized by powder X-ray diffraction （XRD）, scanning electron microscopy （SEM） an...Microsized single-crystalline Co3O4 has been synthesized by high-temperature hydrolysis of CoCD2H20 at 600℃. The samples were characterized by powder X-ray diffraction （XRD）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The results reveal that the as-prepared powders are microsized single-crystalline CO3O4 with cubic spinel structure. An increase in the high-temperature hydrolysis time results in the evolution of particle shapes from cube to quasi-sphere, and then to octahedron. The effect of NaCl additive on the surface morphologies of Co3O4 particles was experimentally investigated. The results indicate that the NaCl additive acts as an inert disperse phase in the high-temperature hydrolysis, and prevents the aggregation of Co3O4 particles effectively.展开更多
The integrable general open-boundary conditions for the one-dimensional Bariev chain are considered. All kinds of solutions to the reflection equation （RE） and its dual are obtained.
In this paper, the approximate expressions of the solitary wave solutions for a class of nonlinear disturbed long-wave system are constructed using the homotopie mapping method.
Zinc Oxide （ZnO） nanostructure were synthesized by precipitating Zinc Chloride and analyzed structurally and optically. Samples were prepared at different thickness （62, 66, 74, 86, 92, and 110 nm）, and substrate ...Zinc Oxide （ZnO） nanostructure were synthesized by precipitating Zinc Chloride and analyzed structurally and optically. Samples were prepared at different thickness （62, 66, 74, 86, 92, and 110 nm）, and substrate temperature kept at 400 ℃ in all cases. Compressed Nitrogen was used as a cartier gas. The samples of the ZnO films were characterized by X-ray diffraction （XRD）, and atomic force microscopy （AFM）. The XRD results indicated that the synthesized ZnO thin films have a pure wurtzite （hexagonal phase） structure. It can be seen that the highest texture coefficient was in （002） plan for nanostructure films. AFM measurement showed the grain size ranging from 62-86 nm. The optical band gap energy （Ee,） of ZnO nanostructure have two values for the same sample and the Eg decrease with increasing thickness utilizing the optical data using UV-Vis spectrophotometer.展开更多
基金Project(50704038) supported by the National Natural Science Foundation of ChinaProject(108170) supported by the Key Foundation of Ministry of Education,China
文摘Microsized single-crystalline Co3O4 has been synthesized by high-temperature hydrolysis of CoCD2H20 at 600℃. The samples were characterized by powder X-ray diffraction （XRD）, scanning electron microscopy （SEM） and transmission electron microscopy （TEM）. The results reveal that the as-prepared powders are microsized single-crystalline CO3O4 with cubic spinel structure. An increase in the high-temperature hydrolysis time results in the evolution of particle shapes from cube to quasi-sphere, and then to octahedron. The effect of NaCl additive on the surface morphologies of Co3O4 particles was experimentally investigated. The results indicate that the NaCl additive acts as an inert disperse phase in the high-temperature hydrolysis, and prevents the aggregation of Co3O4 particles effectively.
基金The project supported by National Natural Science Foundation of China under Grant No.90403019Science and Technology Foundation of Xi'an Shiyou University under Grant No.2006-43
文摘The integrable general open-boundary conditions for the one-dimensional Bariev chain are considered. All kinds of solutions to the reflection equation （RE） and its dual are obtained.
基金Supported by the National Natural Science Foundation of China under Grant No.40876010the Main Direction Program of the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No.KZCX2-YW-Q03-08+2 种基金the LASG State Key Laboratory Special Fundthe Foundation of Shanghai Municipal Education Commission under Grant No.E03004the Natural Science Foundation of Zhejiang Province under Grant No.Y6090164
文摘In this paper, the approximate expressions of the solitary wave solutions for a class of nonlinear disturbed long-wave system are constructed using the homotopie mapping method.
文摘Zinc Oxide （ZnO） nanostructure were synthesized by precipitating Zinc Chloride and analyzed structurally and optically. Samples were prepared at different thickness （62, 66, 74, 86, 92, and 110 nm）, and substrate temperature kept at 400 ℃ in all cases. Compressed Nitrogen was used as a cartier gas. The samples of the ZnO films were characterized by X-ray diffraction （XRD）, and atomic force microscopy （AFM）. The XRD results indicated that the synthesized ZnO thin films have a pure wurtzite （hexagonal phase） structure. It can be seen that the highest texture coefficient was in （002） plan for nanostructure films. AFM measurement showed the grain size ranging from 62-86 nm. The optical band gap energy （Ee,） of ZnO nanostructure have two values for the same sample and the Eg decrease with increasing thickness utilizing the optical data using UV-Vis spectrophotometer.
