Porous structure of synthetic opals |
| |
| Authors: | I I Bardyshev A D Mokrushin A A Pribylov E N Samarov V M Masalov I A Karpov G A Emel’chenko |
| |
| Institution: | (1) Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia;(2) Institute of Solid-State Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia |
| |
| Abstract: | Some adsorption, structural, and annihilation characteristics of synthetic opals are measured. An analysis of these characteristics makes it possible to conclude that the total porosity in opals comprises macropores, which are in essence the voids between structure-forming spheres, and nanopores connected to the substructure of the spheres. The systems of macropores and nanopores are separated by narrow channels that collapse upon the thermal treatment of opals. The sizes of primary a-SiO2 particles and nanopores, which correspond to the voids between these particles, are estimated. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
