https://scholars.lib.ntu.edu.tw/handle/123456789/410361
標題: | Phosphorus-doped g-C 3 N 4 integrated photocatalytic membrane reactor for wastewater treatment | 作者: | Hu C. Wang M.-S. Chen C.-H. Chen Y.-R. Huang P.-H. Tung K.-L. |
關鍵字: | P-doped g-C 3 N 4;Photocatalytic membrane reactor;Wastewater treatment | 公開日期: | 2019 | 起(迄)頁: | 1-11 | 來源出版物: | Journal of Membrane Science | 摘要: | Photocatalytic membrane reactors (PMRs) have been widely used in wastewater treatment over the past few years. In this study, P-doped g-C 3 N 4 (PCN), a metal-free, visible light (Vis)-driven photocatalyst, was prepared and coated on an Al 2 O 3 substrate followed by integration with an inorganic Al 2 O 3 hollow fiber membrane module for use as a PMR. The 10 wt % of PCN exhibited the highest degradation activity for methyl blue (MB) removal under Vis irradiation because the C sites and vacancies within the heptazine rings of the CN units were substituted with P to improve charge separation and reduce the number of unpaired electrons. The PMR exhibits higher efficiency and stability in the removal of MB, methyl orange, phenol solution, and a mixture of the three organic compounds than do individual hollow fiber membranes or photocatalysis systems. The TOC (total organic carbon) analysis revealed that more than 92% of the phenol was decomposed and mineralized in the PMR, which also had a MB removal efficiency of greater than 90% when repeatedly used for four times. These results indicate that the PMR developed in this study is highly active and stable, and can serve as a promising system for effective removal of organic pollutants in wastewater. ? 2019 Elsevier B.V. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/410361 | ISSN: | 03767388 | DOI: | 10.1016/j.memsci.2019.03.012 |
顯示於: | 化學工程學系 |
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