@conference{
author = "Petrović, Jana and Barać, Nemanja and Lazarević, Slavica and Radovanović, Željko and Janaćković, Đorđe and Petrović, Rada",
year = "2022",
abstract = "Fotokatalizatori za redukciju CrVI sintetisani su deponovanjem nanodestica CdS Vili Cu
na TiOz. Redukcijom Cu'* jona ekstraktom lisca hrasta u prisustvu TiO, sintetisan je Cu-
TiO,,
a Cu-TIO,-CdS reakcijom kadmijum-acetata i tiouree u prisustvu Cu-TiO,.
Redukcija CrVD je ispitivana pod dejstvom simuliranog vidljivog zracenja, na pH-3 i
pH=6. DRS je pokazala da fotokatalizatori apsorbuju u vidljivom delu spektra. Cu-TiO,-CdS pokazuje dve granice apsorpcije, za TiO, i za CdS. Cu-TiO, je imao uzu zabranjenu
zonu u odnosu na TiO, i dodatnu apsorpciju u vidijivoj oblasti. Oba fotokatalizatora, a
posebno Cu-110-Cos, su pokazala znatno vecu efikasnost od cistog 11O≥. Odredivanjem
sadrzaja Cd'* jona u rastvoru i ispitivanjem moguénosti ponovne upotrebe fotokatalizatora,
utureno je da dolazi do korozije Cu-TiO,-CdS pri pH=3. Korozija je znacajno smanjena
pri pH=6, ali je i fotokatalitieka efikasnost bila manja., Photocatalysts for the reduction of Cr(VI) were synthesized by depositing CdS and/or Cu nanoparticles on TiO,. Cu-TiO, was synthesized by the reduction of Cu?" ions with oak leaf extract in the presence of TiO,, and Cu-TiO.-CdS by the reaction of cadmium acetate and thiourea in the presence of Cu-TiO,, The reduction of Cr(VI was tested under simulated visible irradiation, at pH-3 or pH-6. DRS has shown that the photocatalysts absorb in the visible part of the spectrum. Cu-TiO,-CdS showed two absorption edges, one for TiO, and the other for CdS. The Cu-TiO, sample had a narrower band gap than TiO, and additional absorption in the visible region. Both photocatalysts, especially Cu-TiO.-CdS" showed significantly higher efficiency than pure TiO,. Based on determining the content of Cd** ions in the solution and examining the possibility of reusing photocatalysts, it was determined that Cu-TiO,-CdS corrosion occurs at pH=3. Corrosion was significantly reduced at pH-6, but the photocatalytic efficiency was also lower.",
publisher = "Beograd : Srpsko hemijsko društvo = Serbian Chemical Society",
journal = "Kratki izvodi radova ; Knjiga radova / 58. savetovanje Srpskog hemijskog društva, Beograd, 9. i 10. jun 2022. godine = Book of Abstracts ; Proceedings = 58th meeting of the Serbian Chemical Society, Belgrade, June 9-10, 2022",
title = "Fotokatalizatori na bazi TiO2 za redukciju Cr(VI), Photocatalysts based on TiO2 for the reduction of Cr(VI)",
pages = "106",
url = "https://hdl.handle.net/21.15107/rcub_technorep_7485"
}
