Effect of synthesis method of nanocopper catalysts on the morphologies of carbon nanofibers prepared by catalytic decomposition of acetylene
摘要:
Regularly coiled carbon nanofibers with a novel "V"-type symmetric growth mode were synthesized by the decomposition of acetylene with nanocopper catalysts. These were obtained from an aqueous copper sulfate solution by borohydride reduction and from the decomposition of copper tartrate, butyrate, oxalate, and lactate precursors, whereas copper nanoparticles prepared by the hydrogen-arc plasma only revealed ribbon-like fibers under identical reaction conditions. The morphology of the catalyst particles before and after fiber growth has been investigated and the effect of the synthesis method on the morphology and growth of the fibers is discussed. (C) 2004 Elsevier Inc. All rights reserved.
DOI:
10.1016/j.jcat.2004.02.004
作为产物:
描述:
aquobis(D,L-lactato)copper(II) monohydrate 以
neat (no solvent) 为溶剂,
生成 copper (II) lactate
参考文献:
名称:
Chelating properties of lactate anion. perturbing effect of additional ligands on bis(DL-lactato)-metal(II) complexes
Electrochemical Synthesis of Complex Compounds of Transition Elements with Carboxyl- and Carbonyl-containing Ligands
作者:V. Yu. Frolov、S. N. Bolotin、V. T. Panyshkin
DOI:10.1007/s11167-005-0416-7
日期:2005.6
Complex compounds of d- and f-elements with carboxyl- and carbonyl-containing ligands were synthesized by the electrochemical method. The influence exerted by a number of factors on the process course was studied. The dependence of the electrosynthesis parameters on the composition of the forming compounds was established. The composition of these compounds was determined. A new method for anodic synthesis of these compounds was developed.
采用电化学方法合成了 d 元素和 f 元素与含羧基和羰基配体的复合物。研究了多种因素对合成过程的影响。确定了电合成参数对形成的化合物组成的依赖性。确定了这些化合物的组成。开发了阳极合成这些化合物的新方法。
Structure and Stability of a Copper(II) Lactate Complex in Alkaline Solution: a Case Study by Energy-Dispersive X-ray Absorption Spectroscopy
Energy-dispersive X-ray absorption spectroscopy was applied, aimed at solving the problem of the structure and stability of a copper(II) lactate complex in alkaline solution, used as a precursor for the electrodeposition of Cu2O. The application of multiple scattering calculations to the simulation of the X-ray absorption near-edge structure part of the spectra allowed an accurate resolution of the structure: the