Nonporous platinum doped titania films: synthesis, optical and photocatalytic characteristics
Journal Title: Хімія, фізика та технологія поверхні - Year 2017, Vol 8, Issue 4
Abstract
The simple and fast route of the synthesis of platinum ions doped titania thin films is designed where platinum(II) acetylacetonate is used as a perspective doping agent due to the possibility of platinum incorporation in the form of the different valence states. Additionally, the multilayered films showing the varied properties are obtained. The increase in Pt content as well as the number of layers leads to the higher absorbance and the band edge shift to the red part of the spectrum. The indirect electronic transition is suggested and the calculated band gap values are depended on the film compositions as well as the number of layers. The significant decrease in the band gap value of titania is noted for 0.5 % Pt/TiO2 films. Pure titania and doped titania films contain anatase phase only with the average crystallite size near 14 nm. The conversion percentage of photocatalytic dichromate ions reduction is increased in the presence of three-layered 0.5 % Pt/TiO2 films under both UV and visible light. The activity of three-layered films is higher compare to the single layered samples. The film contained 0.1 % Pt exhibited the similar activity to titania one.
Authors and Affiliations
D. V. Ihnatiuk, N. P. Smirnova, O. P. Linnik
Synthesis, optical and photocatalytic properties of mesoporous iron doped titania films
Semiconductive films based on iron doped titania are investigated to clarify the role of the doping agent content on their optical features, adsorption capability and photocatalytic properties. The titania films doped wi...
Synthesis and sorption properties of functionalized MCM-41 silicas
Synthesis of mesoporous silicas of MCM-41 type with chemically immobilized β cyclodextrin-containing groups was realized by template sol-gel method in the presence of functional silane. The influence of reaction mixture...
Gas-phase deposition of cavitation-resistant coatings based on boron carbide
Reliability and profitability of NPP operation of any type to a large extent depend on the reliable operation of the system of its pipelines. From literary sources is shown that the most dangerous zone, in terms of erosi...
Лазерна десорбційна/іонізаційна (ЛДІ МС) мас-спектрометрія координаційної сполуки тербію(III) з новим біс-хелатуючим карбациламідофосфатним (КАФ) лігандом
Протягом останніх десятиліть координаційні сполуки лантаноїдів з поліхелатуючими β-дикетонами та їх похідними викликали все більший інтерес через можливість використання таких сполук у біомедичних дослідженнях, як контра...
Synthesis and characterization of copper-loaded hydroxyapatite-alginate microspheres
Microspheres of hydroxyapatite (HA) in alginate (Alg) shell can be successfully used for controlled release of drugs, growth factors, and antibacterial compounds. Hydroxyapatite is a perfect material for biomaterials pro...