PMID- 23384541 OWN - NLM STAT- MEDLINE DCOM- 20131125 LR - 20130429 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 91 IP - 11 DP - 2013 Jun TI - Visible light photocatalytic activity of Fe(3+)-doped ZnO nanoparticle prepared via sol-gel technique. PG - 1604-11 LID - S0045-6535(13)00003-9 [pii] LID - 10.1016/j.chemosphere.2012.12.055 [doi] AB - The optical properties of a ZnO photocatalyst were enhanced with various dopant concentrations of Fe(3+). Doped ZnO nanoparticles were synthesized via a sol-gel method without the use of capping agents or surfactants and was then characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet-visible (UV-Vis) spectroscopy. The results showed that ZnO has a wurtzite, hexagonal structure and that the Fe(3+) ions were well incorporated into the ZnO crystal lattice. As the Fe(3+) concentration increased from 0.25 wt.% to 1 wt.%, the crystal size decreased in comparison with the undoped ZnO. The spectral absorption shifts of the visible light region (red shift) and the band gap decreases for each Fe-ZnO sample were investigated. The photocatalytic activities of the ZnO and Fe-ZnO samples were evaluated based on the degradation of 2-chlorophenol in aqueous solution under solar radiation. The samples with a small concentration of Fe(3+) ions showed enhanced photocatalytic activity with an optimal maximum performance at 0.5 wt.%. The results indicated that toxicity removal of 2-chlorophenol at same line of degradation efficiency. Small crystallite size and low band gap were attributed to high activities of Fe-ZnO samples under various concentrations of Fe(3+) ions compared to undoped ZnO. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Ba-Abbad, Muneer M AU - Ba-Abbad MM AD - Department of Chemical and Process Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan, Malaysia. muneer711@gmail.com FAU - Kadhum, Abdul Amir H AU - Kadhum AA FAU - Mohamad, Abu Bakar AU - Mohamad AB FAU - Takriff, Mohd S AU - Takriff MS FAU - Sopian, Kamaruzzaman AU - Sopian K LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130204 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Chlorophenols) RN - 0 (Environmental Pollutants) RN - 0 (Ferric Compounds) RN - K9KAV4K6BN (2-chlorophenol) RN - SOI2LOH54Z (Zinc Oxide) SB - IM MH - Catalysis MH - Chlorophenols/*radiation effects MH - Environmental Pollutants/*radiation effects MH - Ferric Compounds/*radiation effects MH - Light MH - Nanoparticles/*radiation effects MH - Phase Transition MH - Photolysis MH - Zinc Oxide/*chemical synthesis/*radiation effects EDAT- 2013/02/07 06:00 MHDA- 2013/12/16 06:00 CRDT- 2013/02/07 06:00 PHST- 2012/04/29 00:00 [received] PHST- 2012/12/08 00:00 [revised] PHST- 2012/12/12 00:00 [accepted] PHST- 2013/02/07 06:00 [entrez] PHST- 2013/02/07 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] AID - S0045-6535(13)00003-9 [pii] AID - 10.1016/j.chemosphere.2012.12.055 [doi] PST - ppublish SO - Chemosphere. 2013 Jun;91(11):1604-11. doi: 10.1016/j.chemosphere.2012.12.055. Epub 2013 Feb 4.