ICCAS OpenIR
Investigation of the intermediates formed during the degradation of Malachite Green in the presence of Fe3+ and H2O2 under visible irradiation
Xie, YD; Wu, KQ; Chen, F; He, JJ; Zhao, JC
2001
Source PublicationRESEARCH ON CHEMICAL INTERMEDIATES
ISSN0922-6168
Volume27Issue:3Pages:237-248
AbstractThe photodegradation of Malachite Green (MG) was investigated in the presence of Fe3+ and H2O2 under visible irradiation (lambda > 470 nm) and the intermediates produced during the degradation were determined by FTIR, GC-MS and H-1 NMR. The mineralized products of nitrogen atoms in the dye molecule were analyzed by ammonia ion-selective electrode and ion chromatography. N,N-dimethylaniline, 4-dimethylamino phenol, 4-methylamino benzophenone, 4-dimethylamino benzophenone, benzeneacetic acids and 4-hydroxybenzoic acid were found during the photodegradation of MG. It can be concluded that the dye underwent two different principal degradation pathways in the initial period of the photodecomposition, one is that the dye molecule is splittingly decomposed into small species by attack of HO. radicals on the central carbon, another is that the N-methyl groups are oxidized by HO. radicals, leading to demethylation. Nitrogen atoms in the dye molecules are finally transformed into ammonium ions. A possible degradation mechanism is proposed.
Indexed BySCI
Language英语
WOS IDWOS:000169419000003
PublisherVSP BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78036
Collection中国科学院化学研究所
Corresponding AuthorZhao, JC
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Lab Photochem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Xie, YD,Wu, KQ,Chen, F,et al. Investigation of the intermediates formed during the degradation of Malachite Green in the presence of Fe3+ and H2O2 under visible irradiation[J]. RESEARCH ON CHEMICAL INTERMEDIATES,2001,27(3):237-248.
APA Xie, YD,Wu, KQ,Chen, F,He, JJ,&Zhao, JC.(2001).Investigation of the intermediates formed during the degradation of Malachite Green in the presence of Fe3+ and H2O2 under visible irradiation.RESEARCH ON CHEMICAL INTERMEDIATES,27(3),237-248.
MLA Xie, YD,et al."Investigation of the intermediates formed during the degradation of Malachite Green in the presence of Fe3+ and H2O2 under visible irradiation".RESEARCH ON CHEMICAL INTERMEDIATES 27.3(2001):237-248.
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