Fullerene-catalyzed reduction of azo derivatives in water under UV irradiation
Type
ArticleAuthors
Guo, YongLi, Wengang

Yan, Jingjing
Moosa, Basem

Amad, Maan H.
Werth, Charles
Khashab, Niveen M.

KAUST Department
Advanced Membranes and Porous Materials Research CenterAnalytical Chemistry Core Lab
Biological and Environmental Sciences and Engineering (BESE) Division
Chemical Science Program
Core Labs
Numerical Porous Media SRI Center (NumPor)
Physical Science and Engineering (PSE) Division
Smart Hybrid Materials (SHMs) lab
Date
2012-09-27Online Publication Date
2012-09-27Print Publication Date
2012-12Permanent link to this record
http://hdl.handle.net/10754/562334
Metadata
Show full item recordAbstract
Metal-free fullerene (C60) was found to be an effective catalyst for the reduction of azo groups in basic aqueous solution under UV irradiation in the presence of NaBH4. Use of NaBH4 by itself is not sufficient to reduce the azo dyes without the assistance of a metal catalyst such as Pd and Ag. Experimental and theoretical results suggest that C 60 catalyzes this reaction by using its vacant orbital to accept the electron in the bonding orbital of azo dyes, which leads to the activation of the N=N bond. UV irradiation increases the ability of C60 to interact with electron-donor moieties in azo dyes. Filling a vacancy: Experimental and theoretical methods have been combined to show that C60-catalyzed reductions of azo compounds form aromatic amines under UV irradiation (see scheme). The obtained results show that C60 acts as an electron acceptor to catalyze the reduction of azo compounds, and the role of UV irradiation is to increase the ability of C60 to interact with electron-donor moieties in azo compounds. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Citation
Guo, Y., Li, W., Yan, J., Moosa, B., Amad, M., Werth, C. J., & Khashab, N. M. (2012). Fullerene-Catalyzed Reduction of Azo Derivatives in Water under UV Irradiation. Chemistry - An Asian Journal, 7(12), 2842–2847. doi:10.1002/asia.201200701Sponsors
We are grateful to King Abdullah University of Science and Technology (KAUST) for financial support.Publisher
WileyJournal
Chemistry - An Asian JournalPubMed ID
23015411ae974a485f413a2113503eed53cd6c53
10.1002/asia.201200701
Scopus Count
Related articles
- Degradation process analysis of the azo dyes by catalytic wet air oxidation with catalyst CuO/γ-Al2O3.
- Authors: Hua L, Ma H, Zhang L
- Issue date: 2013 Jan
- The characteristic study and sonocatalytic performance of CdSe-graphene as catalyst in the degradation of azo dyes in aqueous solution under dark conditions.
- Authors: Ghosh T, Ullah K, Nikam V, Park CY, Meng ZD, Oh WC
- Issue date: 2013 Mar
- Sonochemical degradation of azo dyes in aqueous solution: a new heterogeneous kinetics model taking into account the local concentration of OH radicals and azo dyes.
- Authors: Okitsu K, Iwasaki K, Yobiko Y, Bandow H, Nishimura R, Maeda Y
- Issue date: 2005 Mar
- Catalyzed degradation of azo dyes under ambient conditions.
- Authors: Wu JM, Wen W
- Issue date: 2010 Dec 1
- Preparation of Fe-doped mixed crystal TiO2 catalyst and investigation of its sonocatalytic activity during degradation of azo fuchsine under ultrasonic irradiation.
- Authors: Wang J, Sun W, Zhang Z, Jiang Z, Wang X, Xu R, Li R, Zhang X
- Issue date: 2008 Apr 1