Preparation of inverse opal zirconia

Abstract

Inverse opal zirconia is useful in many ways because of their ability to combine several chemical and physical properties. In this research, polystyrene template was fabricated by self-assembly method and inverse opal zirconia was prepared by colloidal crystal-templating method. The process of preparation of inverse opal zirconia as well as effects on morphology and phase of as-prepared inverse opal zirconia were studied. The results showed precursor ratio of zirconium acetate and methanol, mass ratio of polystyrene templates and precursor and dipping times had remarkable influence on morphology of inverse opal zirconia. When the precursor ratio was 1:1; the mass ratio was 1:15 and dipped once, much better morphology of inverse opal zirconia was obtained. The mass ratio, sintering temperature and holding time had significant effect on crystallization of zirconia. Pure phase zirconia could be obtained when sintered at 600 o C, holding time was 2h and the mass ratio was 1:1. A distinguished single stop band in the visible region of the spectrum and unique structural color were observed in inverse opal zirconia, which will make this material promising candidate for novel pigment.

Preparation and modification of inverse opal zirconia pigment

“…Before modification, when a bunch of natural light irradiates on the surface of the sample, the wavelength which in the stop band is not allowed to enter the sample to be reflected, and the light of the residual wavelength could enter the interior of the sample and the reflected light and the background reflected light of the final forbidden band part are received by the human eye [17,18]. Among them, the background light of stray light could reduce color performance of the sample, and the carbon produced could adjust the weakening degree of the background light, so as to adjust the proportion of the visible light component of human eye.…”

Partially stabilized zirconia (3Y-ZrO2) aluminum borate (Al18B4O33) needles composite materials by direct sintering

“…Fine grained partially stabilized zirconia (PSZ) ceramics have been widely employed and studied for nearly four decades [2][3][4][5][6][7][8][9]. Generally, in ceramics field, both mono-phasic and multiphasic ceramics present distinctive features and have been employed in many different fields, from structural ceramics, nuclear functions, biomaterials, energy materials, etc.…”

“…Generally, in ceramics field, both mono-phasic and multiphasic ceramics present distinctive features and have been employed in many different fields, from structural ceramics, nuclear functions, biomaterials, energy materials, etc. [1,8,[10][11][12]. In zirconia, the most employed dopants are yttrium, cerium, calcium and magnesium, but other cations are also used (La, Gd, etc.).…”