Repozytorium publikacji - Politechnika Gdańska

Ag/Pt-modified TiO2nanocomposites were synthesized using the sol–gel method. The effect of metal typeand amount as well as synthesis route on the photocatalytic activity in reaction of toluene removal, usedas a model volatile organic compound, was investigated. Toluene, at the concentration of about 200 ppm,was irradiated over modified TiO2using light-emitting diodes (LEDs, max= 415 nm). The results showedthat toluene could be mostly removed from the air after 20 min of irradiation over TiO2modified withAg/Pt bimetallic nanoparticles. The efficiency of toluene degradation in four subsequent cycles decreasedfrom 99 to 53%, but it could be re-established by thermal treating of the sample. The photocatalyst show-ing the highest degradation rate consisted of large crystallites of Ag with a diameter of about 15–30 nmwith fine Pt nanoparticles ranging from 0.8 to 2.0 nm surrounding TiO2layer.

Autorzy

• prof. dr hab. inż. Anna Zielińska-Jurek link otwiera się w nowej karcie ,
• prof. dr hab. inż. Adriana Zaleska-Medynska link otwiera się w nowej karcie