Method for producing nanocomposites based on nanotubes of titanium dioxide and device for its implementation

The invention relates to a method for producing nanocomposites based on nanotubes of titanium dioxide and a device for its implementation and can be used for the photocatalytic conversion of carbon dioxide in the presence of steam under the influence of a wide range of wavelengths of the solar radiation in hydrocarbon fuel gas (methane, ethane, propane).The method, according to the invention, comprises the catalytic activation of the surface of the titanium dioxide nanotubes in a solution of palladium and tin chloride compounds in acid medium, followed by washing in demineralized water and deposition of metal copper on the internal walls of the nanopores in alkaline solution containing palladium and copper ammonium-tartrate complexes, Rongalit and formaldehyde, with ultrasonic action on copper activation and deposition solutions. The activation, washing and deposition processes are carried out by preliminary deoxidation of solutions by magnetic liquefaction in a polygradient magnetic field with subsequent vacuuming.The device for implementing the method, according to the invention, comprises a hermetically sealed reactor with cover, with a built-in ultrasonic generator. At the same time, the reactor is connected to a vacuum pump and pipelines equipped with electromagnetic valves, connected to separate tanks for copper activation, washing, and deposition solutions, inside which is placed a spherical magnetic charge of barium hexaferrite, magnetized to saturation. On the outside of the tanks are fixed solenoids, connected to an alternating-current source, the device elements being connected to a control unit. Invenţia se referă la un procedeu de obţinere a nanocompozitelor pe bază de nanotuburi din dioxid de titan şi la o instalaţie pentru realizarea acestuia şi poate fi utilizată pentru conversia fotocatalitică a dioxidului de carbon în prezenţa vaporilor de apă sub acţiunea unui spectru larg de lungimi de undă ale radiaţiei solare în combustibil gazos de hidrocarburi (metan, etan, propan).Procedeul, conform invenţiei, includeactivarea catalitică a suprafeţei nanotuburilor din dioxid de titan în soluţia clorurilor de paladiu şi staniu în mediu acid, urmată de spălare în apă desalinizată şi depunerea cuprului metalic pe pereţii interiori ai nanoporilor în soluţie bazică, care conţine complecşi tartrato-amoniacali de cupru şi de paladiu, rongalită şi formaldehidă, cu acţiunea ultrasunetului asupra soluţiilor de activare şi de depunere a cuprului. Procesele de