title: Characterization of TiO(2)-chitosan/glass photocatalyst for the removal of a monoazo dye via photodegradation-adsorption process.
abstract: In this paper, the newly explored TiO(2)-Chitosan/Glass was suggested as a promising alternative material to conventional means of wastewater treatment. Characterization of TiO(2)-Chitosan/Glass photocatalyst was studied with SEM-EDX, XRD, and Fourier transform infrared spectroscopy (FTIR) analysis. The combination effect of photodegradation-adsorption process for the removal of methyl orange (MO), an acid dye of the monoazo series occur promisingly when four layers of TiO(2)-Chitosan/Glass photocatalyst was used for MO removal. Approximately, 87.0% of total MO removal was achieved. The reactive -NH(2), -OH, and metal oxide contents in the prepared photocatalyst responsible for the photodegradation-adsorption effect were confirmed by FTIR study. Similarly, MO removal behavior was well supported by SEM-EDX and XRD analysis. Significant dependence of MO removal on the TiO(2)-Chitosan loading can be explained in terms of relationship between quantum yield of photocatalytic reactions and photocatalyst structure/activity. Hence, the research work done thus far suggests a new method, having both the advantages of photodegradation-adsorption process in the abatement of various wastewater pollutants.
authors.affiliation: Chemistry Department, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia. zulkar@fsas.upm.edu.my
authors.forename: Zulkarnain
authors.initials: Z
authors.lastname: Zainal
authors.forename: Lee Kong
authors.initials: LK
authors.lastname: Hui
authors.forename: Mohd Zobir
authors.initials: MZ
authors.lastname: Hussein
authors.forename: Abdul Halim
authors.initials: AH
authors.lastname: Abdullah
authors.forename: Imad Moh'd Khair Rashid
authors.initials: IM
authors.lastname: Hamadneh
mesh_terms: D000327:Adsorption; D001391:Azo Compounds / Q000302:isolation & purification*; D002384:Catalysis; D048271:Chitosan / Q000737:chemistry*; D004396:Coloring Agents / Q000302:isolation & purification*; D005898:Glass / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D010777:Photochemistry / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D014025:Titanium / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; C009495:titanium dioxide; C100258:methyl orange; D048271:Chitosan; D014025:Titanium