Identification of the degradation pathways of alkanolamines with TiO2 photocatalysis

Chung Shin Lu, Chiing Chang Chen, Fu-Der Mai, Hua Kuang Li

研究成果: 雜誌貢獻文章同行評審

39 引文 斯高帕斯(Scopus)

摘要

The present study deals with the photocatalytic degradation of the alkanolamine, 2-dimethylamino-2-methyl-1-propanol (DMAMP), in the presence of TiO2 particles and UV-A (λ = 365 nm) radiation. The obtained results show complete oxidation of DMAMP after 20 h, and a little over 90% of DMAMP was mineralization after 64-h of treatment. The effects of the solution pH, catalyst loading, and anions on the photocatalytic degradation of DMAMP were investigated, as well as the reaction intermediates that were formed during treatment. To the best of our knowledge, this is the first time that reports the degradation pathways of DMAMP. A number of intermediates were identified by GC/MS techniques during the treatment of DMAMP, following three tentative degradation routes. The first one is based on the oxidation of the primary alcohol group leading to the formation of corresponding aldehyde and carboxylic acid. The second route is based on the rupture of the N-C bond to form 2-methylpropanal and acetone. The last degradation route is based on the cyclization of the β-amino alcohol group to form the oxazolidine derivatives.
原文英語
頁(從 - 到)306-316
頁數11
期刊Journal of Hazardous Materials
165
發行號1-3
DOIs
出版狀態已發佈 - 六月 15 2009

ASJC Scopus subject areas

  • 健康、毒理學和誘變
  • 污染
  • 廢物管理和處置
  • 環境化學
  • 環境工程

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