Silver functionalized titania-silica xerogels: Preparation, morpho-structural and photocatalytic properties, kinetic modeling
Peter Anca , Mihaly-cozmuta Leonard , Mihaly-cozmuta Anca , Nicula Camelia , Cadar Calin , Agnieszka Jastrzębska , Patrycja Kurtycz , Andrzej Olszyna , Vulpoi Adriana , Danciu Virginia , Radu Teodora , Baia Lucian
AbstractPreparation, morpho-structural and photo-characterization of Ag/TiO2–SiO2 (0.5–1wt%) composites were reported. The silver ions were reduced on the titania–silica surface in two different routes. The best Ag/TiO2–SiO2 photocatalysts must have high specific surface area and low Ag content, when the Ag nanoparticles homogeneous dispersed onto the mixed oxide surface generates an oxidation state of titanium (TiAg4+), that improves the charge carriers transfer, thus increasing their photoactivity. A negative value of the activation energy suggested that the temperature does not influence the photoactivity of the composites.
|Journal series||Journal of Alloys and Compounds, ISSN 0925-8388, (A 35 pkt)|
|Keywords in English||Nanostructured Ag/TiO2–SiO2 composites; Sol–gel growth; Isolated Ag nanoparticles; Photoactivity; Activation energy|
|Score|| = 35.0, 28-11-2017, ArticleFromJournal|
= 35.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2015 = 3.014 (2) - 2015=2.808 (5)|
|Citation count*||13 (2019-01-21)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.