【摘 要】
：
A general, simple and economic synthetic method for synthesizing carbon nanofibers was presented. In the method, ethanol was employed as carbon source; metal sa
【机 构】
：
Research Center for Sensor Technology
【基金项目】
：
The Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing, China;The Science and Technology Activity for Chinese Homecoming Fellow Abroad, Program o
论文部分内容阅读
A general, simple and economic synthetic method for synthesizing carbon nanofibers was presented. In the method, ethanol was employed as carbon source; metal salts such as nickel nitrate, ferric nitrate and ferric chloride were used as catalyst precursor respectively; copper plate was employed as the support material. A lot of products were obtained by catalytic combustion deposition of ethanol vapor. Then the as-prepared carbon nanofibers were characterized by field-emission scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, energy dispersion X-ray spectroscopy and selected-area electron diffractometry. By analyzing the results of characterization, the conclusions are as follows: 1) the large catalyst particles tend to formlarge-diameter CNFs, small catalyst particles are inclinable to form small-diameter CNFs; 2) the morphology of the catalyst can affect the final morphology of the CNFs. Moreover, the possible growth mechanisms were proposed and the degree of graphitization of samples was estimated by Raman spectroscopy characterization.
其他文献
To enhancing the wireless sensor networks security in target tracking and locating application,this article proposes a tracking cluster based mobile cluster dis
The effect of tempering temperature on the microstructure and mechanical properties of ultra-high strength, copper-bearing, low-carbon bainific steel has been i
As a matrix for Sc-type impregnated cathode,scandia doped tungsten with a uniform ldistribution of SC2O3 was obtained by powder metallurgy combined with the liq
The high strain rate superplastic deformation properties and characteristics of a rolled AZ91 magnesium alloy at temperatures ranging from 623 to 698 K (0.67Tm-
Based on the Fourier transform, a new shape descriptor was proposed to represent the flame image. By employing the shape descriptor as the input, the flame imag
The effects of factors such as the molar ratio of H2O to CH4 (n(H2O)/n(CH4)), methane conversion temperature and time on methane conversion rate were investigat
A modified unscented particle filtering scheme for nonlinear tracking is proposed,in view of the potential drawbacks (such as,particle impoverishment and numeri
A novel zinc-rich pigment based on P(St-BA-MAA-SPAA) nano-latex was obtained, which is suitable for the use in hot alkali liquid medium. The nano-latex was synt
How to solve the partial differential equation has been attached importance to by all kinds of fields. The exact solution to a class of partial differential equ
Gel-casting process was developed as a new molding process in the field of copper base powder metallurgy to manufacture metal parts with excellent performance a