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Solar degradation of Direct Blue 71 using surface modified iron doped ZnO hybrid nanomaterials.
MedLine Citation:
PMID:  22592460     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
This paper reports photodegradation of Direct Blue 71 under irradiation by sunlight. We synthesized Fe:ZnO nanomaterials under mild hydrothermal conditions (P = autogenous, T = 100 °C, t = 18 h). The precursors were Fe(2)O(3) as dopant, n-butylamine as surface modifier, NaOH as mineralizer and reagent grade ZnO. The systematic experiments on the photodegradation of Direct Blue 71 were carried out by changing different effective parameters. The variables in this study were type of nanomaterials synthesized (4 types), nanomaterial dosage (0.4-1.0 g/L), contact time (30-120 min), pH (3-11), and dye concentration (20-100 ppm). The photodegradation efficiency was determined using a UV-Vis spectrophotometer. Determination of total organic carbon (TOC) amount was used to find out mineralization efficiency. Our experimental results revealed that the nanomaterials synthesized had higher efficiency compared with the reagent grade ZnO. The best efficiency was achieved at the following conditions: 1.0 g/L nanomaterials loading, 120 min contact time, pH 5, and photodegradation efficiency from more than 75 up to 99% depending upon the dye concentration.
Authors:
A Maleki; B Shahmoradi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Water science and technology : a journal of the International Association on Water Pollution Research     Volume:  65     ISSN:  0273-1223     ISO Abbreviation:  Water Sci. Technol.     Publication Date:  2012  
Date Detail:
Created Date:  2012-05-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9879497     Medline TA:  Water Sci Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1923-8     Citation Subset:  IM    
Affiliation:
Environmental Health Research Center, Faculty of Health, Kurdistan University of Medical Science, Sanadaj, Kurdistan, Iran E-mail: bshahmorady@gmail.com; bshahmoradi@ymail.com.
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