Study on Degradation Pathway of N,N-dimethylacetamide by Photocatalytic Oxidation in Aqueous TiO2 Suspensions
- 作者：Ge BizhouZhang JunLei PingKong XianghongHe Qiang
- 会议时间：2011-06-01
- 关键词：DMAC ; Photocatalysis ; Titanium dioxide. Degradation ; Photoproduct analysis
- 作者单位：Ge Bizhou,Zhang Jun,Lei Ping(Key Lab of Northwest Water Resource Environment and Ecology, MOE;School of Environmental & Municipal Engineering, Xi'an University of Architecture and Technology,Xi'an 710055. P. R. China)Kong Xianghong,He Qiang(Shannxi Entry-Exit Inspection and Quarantine Bureau, Xi'an 710068, P. R. China)
- 母体文献：2011全国非常规水源利用技术研讨会论文集
- 会议名称：2011全国非常规水源利用技术研讨会
- 会议地点：青岛
- 主办单位：水利部
- 语种：chi
摘要
The photocatalytic degradation of N,N-dimethylacetamide (DMAC) on the condition of photocatalytic oxidation with the energy/volume ratio of 10 W/0.5 1 has been investigated in aqueous solutions containing TiO2 suspensions as photocatalysts.Focusing on the behavior of photocatalytic degradation of DMAC,the optimal separated conditions of the intermediate products were investigated with the high performance liquid chromatography (HPLC) using mixed eluent (0.4% CH3COOH:CH3OH =92 ∶ 8 by volume).Meanwhile,the main intermediate products were identified with the liquid chromatography mass-spectrometry (LC/MS).Based on the structure identification of the organic intermediates,generation and changes of the main intermediates in photocatalytic degradation processes were interpreted and then a possible pathway of degradation of DMAC was proposed.Furthermore,the mineralization degradation of DMAC was illustrated and identified as the final existence of the morphology of N (turning into NO3-) in the strong ion exchange column by the multi-dimensional chromatography.