Hu C.Wang M.-S.Chen C.-H.Chen Y.-R.Huang P.-H.Tung K.-L.2019-05-242019-05-24201903767388https://scholars.lib.ntu.edu.tw/handle/123456789/410361Photocatalytic 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.P-doped g-C 3 N 4Photocatalytic membrane reactorWastewater treatmentjournal article10.1016/j.memsci.2019.03.0122-s2.0-85062622044https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062622044&doi=10.1016%2fj.memsci.2019.03.012&partnerID=40&md5=e8df99885dfc6dfe62d68dc32490c49a