文献类型：期刊文献

英文题名：A novel forward osmosis nanocomposite membrane with g-C3N4 quantum dots fabricated on polyacrylonitrile electrospun nanofiber membrane for high-permeability and selectivity

作者：Pandaya, Dibakar[1];Yang, Jia-Rui[1];Xu, Zhen-Liang[1];Hedar, Mateen[1];Zhang, Ming-Xiao[1];Jia, Rui[1];Han, Rui[1];Irfan, Muhammad[1];Cheng, Liang[1];Joshi, Mahesh Kumar[2]

机构：[1]East China Univ Sci & Technol, Chem Engn Res Ctr, State Key Lab Chem Engn, Sch Chem Engn,Membrane Sci & Engn R&D Lab, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Tribhuvan Univ, Cent Dept Chem, Kathmandu, Nepal

年份：2025

卷号：520

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20252918790586);WOS:【SCI-EXPANDED(收录号:WOS:001535313000002)】；

基金：The authors gratefully acknowledge the financial support received from the State Key R & D Program of China (2021YFB3801103 and 2021YFB3801101) and the National Natural Science Foundation of China (22078092, 21176067 and 22208101) .

语种：英文

外文关键词：Electrospun nanofiber; Desalination; G-C 3 N 4 quantum dots (g-CNQDs); Polyacrylonitrile (PAN)

摘要：Electrospun nanofibrous membranes are emerging as promising substrates of forward osmosis (FO) membranes because of their enhanced porosity and reduced tortuosity. Nevertheless, the deposition of a defect-free PA layer is difficult due to larger inter-connected pores and severe roughness. To address this issue, ultrafine polyacrylonitrile (PAN) nanofiber membrane (average diameters of 95.8 +/- 41.52 nm) was prepared with superior mechanical strength. Thereafter, g-C3N4 quantum dots (g-CNQDs) were synthesized using an eco-friendly technique. Subsequently, a thinner polyamide (PA) selective layer on PAN nanofibrous membrane was formed through an interfacial polymerization (IP) reaction between m-phenylenediamine (MPD) containing (g-CNQDs) and trimesoyl chloride (TMC) to produce advanced thin-film nanocomposite (TFNC-40) FO membrane. The TFNC-40 FO membrane demonstrated higher water flux (Jw) rates of 41.05 and 33.33 LMH and lower reverse salt flux (Js) rates of 3.24, and 3.67 gMH for pressure retarded osmosis (PRO) and FO modes, respectively, using DI water as feed solution (FS) and 1 M NaCl as draw solution (DS). In contrast, the control TFNC-0 membrane (without g-CNQDs) showed a significantly lower Jw rate of 28.98 and 26 LMH and higher Js rate of 4.54 and 4.92 gMH for PRO and FO modes, respectively. The novel FO membrane also exhibited long-term stability and antifouling properties with humic acid (HA) and bovine serum albumin (BSA). These results suggested that the incorporation of g-CNQDs in optimizing membrane efficiency could be a promising strategy for the development of advanced membranes for future FO applications.