Recent Advances in Heterogeneous Photocatalytic Decolorization of Synthetic Dyes
Joint Authors
Abd Hamid, Sharifah Bee
Muhd Julkapli, Nurhidayatullaili
Bagheri, Samira
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-25, 25 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-25
Country of Publication
Egypt
No. of Pages
25
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
During the process and operation of the dyes, the wastes produced were commonly found to contain organic and inorganic impurities leading to risks in the ecosystem and biodiversity with the resultant impact on the environment.
Improper effluent disposal in aqueous ecosystems leads to reduction of sunlight penetration which in turn diminishes photosynthetic activity, resulting in acute toxic effects on the aquatic flora/fauna and dissolved oxygen concentration.
Recently, photodegradation of various synthetic dyes has been studied in terms of their absorbance and the reduction of oxygen content by changes in the concentration of the dye.
The advantages that make photocatalytic techniques superior to traditional methods are the ability to remove contaminates in the range of ppb, no generation of polycyclic compounds, higher speed, and lower cost.
Semiconductor metal oxides, typically TiO2, ZnO, SnO, NiO, Cu2O, Fe3O4, and also CdS have been utilized as photocatalyst for their nontoxic nature, high photosensitivity, wide band gap and high stability.
Various process parameters like photocatalyst dose, pH and initial dye concentrations have been varied and highlighted.
Research focused on surface modification of semiconductors and mixed oxide semiconductors by doping them with noble metals (Pt, Pd, Au, and Ag) and organic matter (C, N, Cl, and F) showed enhanced dye degradation compared to corresponding native semiconductors.
This paper reviews recent advances in heterogeneous photocatalytic decolorization for the removal of synthetic dyes from water and wastewater.
Thus, the main core highlighted in this paper is the critical selection of semiconductors for photocatalysis based on the chemical, physical, and selective nature of the poisoning dyes.
American Psychological Association (APA)
Muhd Julkapli, Nurhidayatullaili& Bagheri, Samira& Abd Hamid, Sharifah Bee. 2014. Recent Advances in Heterogeneous Photocatalytic Decolorization of Synthetic Dyes. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-25.
https://search.emarefa.net/detail/BIM-1050632
Modern Language Association (MLA)
Muhd Julkapli, Nurhidayatullaili…[et al.]. Recent Advances in Heterogeneous Photocatalytic Decolorization of Synthetic Dyes. The Scientific World Journal No. 2014 (2014), pp.1-25.
https://search.emarefa.net/detail/BIM-1050632
American Medical Association (AMA)
Muhd Julkapli, Nurhidayatullaili& Bagheri, Samira& Abd Hamid, Sharifah Bee. Recent Advances in Heterogeneous Photocatalytic Decolorization of Synthetic Dyes. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-25.
https://search.emarefa.net/detail/BIM-1050632
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1050632