Photodegradation of Dyes Using Multiwalled Carbon Nanotube and Ferrous Ion

• Published in: Journal of environmental engineering (New York, N.Y.) Vol. 139; no. 11; pp. 1368 - 1374
• Main Author: Mahmoodi, Niyaz Mohammad
• Format: Journal Article
• Language: English
• Published: Reston, VA American Society of Civil Engineers 01.11.2013
• Subjects: Acetates; Applied sciences; Degradation; Dyes; Exact sciences and technology; Formates; Fourier transforms; Multi wall carbon nanotubes; Photodegradation; Pollution; Scanning electron microscopy; Technical Papers; Photodegradation; Scanning electron microscopy; Dyes; Hydrogen peroxide; Aliphatic compound; Iron II; Synergism; Carbon; Sulfur dioxide; Degradation; Dye; Ion chromatography; Ultraviolet radiation; Mineralization; Ferrous ion; Multiwalled carbon nanotube; Synergistic effect; Catalyst; Nanotechnology; Photochemical degradation
• ISSN: 0733-9372; 1943-7870
• DOI: 10.1061/(ASCE)EE.1943-7870.0000762

AbstractIn this paper, photodegradation of dyes [Acid Red 14 (AR14) and Acid Red 18 (AR18)] has been studied using multiwalled carbon nanotube (MWCNT), ferrous ion (Fe2+), and hydrogen peroxide. The surface characteristics of MWCNT were investigated using Fourier transform infrared (FTIR) and scanning electron microscopy (SEM). UV-Visible (UV-Vis) and ion chromatography (IC) analyses were employed to investigate dye degradation. The effects of MWCNT, Fe2+, initial dye concentration, and salt on the photodegradation of dye were investigated. Formate, acetate, and oxalate were detected as aliphatic intermediates. The NO3- and SO42- were detected as dye mineralization products. The results showed that MWCNT/Fe2+ might be a suitable catalyst for dye degradation.