Formation of bayerite, gibbsite and boehmite particles by laser ablation

Yi Pei Lee, Yi Hsin Liu, Chen Sheng Yeh

研究成果: Article同行評審

51 引文 斯高帕斯(Scopus)

摘要

Aluminium hydroxides were prepared by the laser ablation method, a nanosecond pulsed laser being employed to irradiate an Al rod immersed in H2O solvent. Through the course of aging, bayerite, gibbsite and boehmite particles were formed simultaneously. These crystals exhibited three different morphologies. Their shapes were triangular (bayerite), rectangular (gibbsite) and fibrous (boehmite). The dimensions averaged several hundred nanometers. The measurements of the UV-vis absorption can serve as a tool to identify whether or not the crystalline particles had been obtained, in addition to the TEM images. A dissolution-recrystallization process was observed in the development of a luminous materials. The progression of formation from bulk Al to nano-aluminium hydroxides is discussed. Both basic and acidic conditions showed an influence on the growth of particles. The boehmite products can be generated solely by increasing the solution temperature.

原文English
頁(從 - 到)4681-4686
頁數6
期刊Physical Chemistry Chemical Physics
1
發行號19
DOIs
出版狀態Published - 1999 十月 1

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)
  • 物理與理論化學

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