Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 30, Issue -, Pages 275-284Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2014.10.006
Keywords
Heterogeneous photocatalysis; Bromothymol blue; Nano; Clinoptilolite; ZnO
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Photodecolorization of bromothymol blue (BTB) aqueous solution using supported ZnO onto clinoptilolite nanoparticles (NCP) under Hg lamp irradiation was studied. NCP was prepared by a mechanical method using a planetary ball mill. ZnO supported samples (ZnO-NCP) were obtained by calcinations at 450 degrees C for 12 h followed by ion exchanging of the parent NCP with zinc(II) nitrate aqueous solutions (0.1, 0.2, 0.3 and 0.5 M) for 24 h. Raw and modified samples were characterized by XRD, FT-IR, DRS, TEM, SEM and BET. The degradation extent was monitored by UV-vis absorption as well as COD. The decolorization kinetics was fitted well to the Langmuire-Hinselwood first order rate law. (C) 2014 Elsevier Ltd. All rights reserved.
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