Fe-Doped TiO2 Supported on HY Zeolite for Solar Photocatalytic Treatment of Dye Pollutants

Abstract

Zeolite-supported TiO 2 and Fe-doped TiO 2 /zeolite photocatalysts were synthesized, aiming at improving the adsorption properties of the microporous support towards polluting dyes and the photocatalytic performance of TiO 2 in the treatment of the adsorbed organics. The TiO 2 /HY zeolite catalyst exhibited the best performance in the photocatalytic degradation of methylene blue, MB, over 10 wt% TiO 2 /HY under UV light at 254 nm. The addition of Fe species in the synthesis mixture led to Fe-TiO 2 /HY catalyst. The combination of adequate zeolite, good titanium dioxide dispersion, and Fe doping led to a remarkable performance in the degradation of the model dye. Over a 10 wt% Fe-doped TiO 2 /HY catalyst a total removal of MB (>98%) was achieved after 60 min under very mild conditions and simple visible light irradiation.

Crystal Structure, Spectroscopy and Photocatalytic Properties of a Co(II) Complex Based on 5-(1,2,4-triazol-1-yl)pyridine-3-carboxylic Acid

“…Therefore, the synthesis of efficient and environmentally friendly photocatalysts has attracted ever-increasing attention [9,10]. TiO 2 − and ZnO−based semiconductor materials are the most widely used photocatalysts in recent decades [11,12]. However, the main drawback for these materials is the fast recombination of electrons and hole pairs generated by irradiation [13].…”

TiO2/Fly Ash Nanocomposite for Photodegradation of Organic Pollutant

“…Foura et al performed photocatalysis tests for 3-15 wt.% TiO 2 -loaded HY zeolite [67] in order to establish the influence of the amount of TiO 2 over degradation of MB under UV irradiation (Fig. 13).…”

TiO2/Fly Ash Nanocomposite for Photodegradation of Organic Pollutant

“…Results revealed that the HY zeolite has a very high influence on the degradation rate. TiO 2 particles at the surface of HY zeolite enhance the electron transfer from the semiconductor to the HY zeolite, and consequently, the zeolite prevents the electron-hole recombination [67,68]. The presence of the zeolite phase improves the photodegradation efficiency through synergistic factors such as high-specific surface area, adsorption capacities, and its ability to keep TiO 2 as a dispersed phase.…”

“…Photocatalysis efficiency of TiO 2 -coated geopolymer for MB [21] Photocatalytic degradation of MB over TiO 2 and TiO 2 /zeolite under UV irradiation[67] …”