Premium
Photocatalytic Degradation of Dye C.I. Direct Blue 78 Using TiO 2 Nanoparticles Immobilized on Recycled Wool‐Based Nonwoven Material
Author(s) -
Marković Darka,
Jokić Bojan,
Šaponjić Zoran,
Potkonjak Branislav,
Jovančić Petar,
Radetić Maja
Publication year - 2013
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201200413
Subject(s) - photodegradation , photocatalysis , adsorption , nanoparticle , materials science , wool , degradation (telecommunications) , chemical engineering , aqueous solution , nonwoven fabric , nuclear chemistry , catalysis , composite material , chemistry , nanotechnology , fiber , organic chemistry , telecommunications , computer science , engineering
This paper discusses the possibility of immobilization of TiO 2 nanoparticles onto recycled wool‐based nonwoven material, which can be utilized for removal of dyes from wastewater. The photocatalytic activity of TiO 2 nanoparticles deposited on the nonwoven material was evaluated in the aqueous solution of direct dye C.I. Direct Blue 78 under the UV illumination. Nonwoven material modified with TiO 2 nanoparticles provides complete removal of dye from the solution already after 4–6 h of UV illumination. However, photodegradation of the dye adsorbed on the nonwoven material was obtained within 24 h of UV illumination. The rate of dye adsorption and photodegradation depends on the amount of deposited TiO 2 nanoparticles. The increase of initial dye concentration induced decrease in photocatalytic efficiency of immobilized TiO 2 nanoparticles. The highest photodegradation rate was achieved in acidic conditions. Elevated temperatures positively affected the removal of dye from solution. Photocatalytic activity of TiO 2 nanoparticles deposited on nonwoven material was preserved after three photodegradation cycles.