Study of Xerogel–Glass Transition of CuO/SiO2

Colored semi-transparent Cu-Si oxide thin films prepared by magnetron sputtering

“…For example, the characteristic ruby color is achieved by incorporation of metallic Cu colloidal particles in transparent silica or sodium silicate matrix [9,10]. It is also well known that glasses with reddish color can be obtained by the incorporation of Cu 2+ ions and CuO clusters in these transparent matrices [3,4,9,12]. Thus, a crucial important point for the characterization of the prepared Cu-Si oxide thin films has been to distinguish whether the constituent oxides form a randomly distributed mixed phase (solid solution of the oxide phases) or segregate into separated phases, and to which extent the local electronic structure around the two cations is dependent on mixing.…”

“…The range of variation of the optical characteristics of the films achieved in this way can be very wide if the two oxides mixed together have rather different refractive index and extinction coefficient. This idea is related to the common use of transition metal oxides to color glasses, traditionally employed in stained-glass windows and other hand-craft glasses [3,4,[9][10][11][12].…”

Contribution of HRTEM to the characterization of silica-incorporated copper-oxide catalysts prepared by the Sol-Gel technique

“…% CuO, were prepared by a technique based on the sol-gel process. More details concerning the preparation method are provided elsewhere (Cordoba et al, 1995). The characterization of four samples is reported in the present study.…”

The Preparation of Nano-oxides of Zinc and Barium of [Ba (o-phen)4] [Zn (EDTA)], [Zn(o-phen)4]2 [ Ba(SCN)6], and Synthesis of ZrO2 Nanoparticles by Chemical Methods

“…Also, the cationic and anionic parts were synthesized in a similar manner to the reference [12][13][14][15][16] . X-ray spectroscopy( Fig.…”