Nanocomposites and Nanomaterials

New Ti-containing catalyst synthesized by ion implantation method 
Sanzhak O.V.1, Brazhnyk D.V.1, Goncharov V.V.2, Zazhigalov V.A.1, Azimov F.A.1
1 Departmen of Heterogeneous Catalytic Oxidation Processes, Institute for Sorption and Problems of Endoecology NAS of  Ukraine, General Naumov Str., 13, Kyiv-03164, Ukraine. 
E-mail: Sanzhakalena@bigmir.net
2 State Establishment, Lugansk State Medical University, Budivelnykiv Str., 32, Rubizhne-93012, Ukraine 

	Very important problem nowadays is the industrial wastewater purification. Aromatic hydrocarbons (phenol and benzene, in particular) are the most common pollutants. Photocatalysis is one of the environmental friendly technologies for the reprocessing of toxic pollutants directly under the influence of solar radiation. Creation of deposited photocatalyst is promising, in which can be used both mechanically strong granules and flat profile composites as supports.
Synthesis of the supported on AISI 321 stainless steel foil (thickness 80 μm) composites was carried out by low temperature ion implantation method. Ti was used as an implant. The cathode sputtering of the target (Ti) was carried out by N2 ions. The energy of implantation is 20 keV at a dose of 5x1017 ions/m2. The obtained samples were calcinated on air in the temperature range of 200-600 °С. The surface composition and the effect of calcination temperature were characterized by XRD, SAXS, SEM, AFM, and XPS.  
It was shown that as a result of ion implantation of Ti on the surface of a stainless steel, a nanosized layer of the implant is formed, in the form of  amorphous composition consisting of oxide, nitride and titanium oxynitride. Hypothesis of active phases on the surface of support is expressed, which ensures its high activity in the reaction of photodegradation of an aqueous solution of benzene under visible light irradiation. The perspective and practicality of using the obtained samples in the process of removal of benzene from its aqueous solutions with visible light irradiation is shown, which today is very important from the point of view of ecology.