原位制备共价有机框架膜及其染料分离性能
PDF下载 (28)党子浩,张珂颖,王 辉,逯 鹏.原位制备共价有机框架膜及其染料分离性能[J].宁波大学学报(理工版),2026,39(2):81-87.DOI:10.20098/j.cnki.1001-5132.2025.1208
Dang Zihao,Zhang Keying,Wang Hui,Lu Peng.In-situ preparation of covalent organic framework membranes and their dye separation performance[J].Journal of Ningbo University(Natural Science & Engineering Edition),2026,39(2):81-87.DOI:10.20098/j.cnki.1001-5132.2025.1208
| Title: | In-situ preparation of covalent organic framework membranes and their dye separation performance |
| 作者: | 党子浩, 张珂颖, 王 辉, 逯 鹏 |
| Author(s): | Dang Zihao, Zhang Keying, Wang Hui, Lu Peng |
| 关键词: | 共价有机框架膜; 席夫碱反应; 原位生长; 染料分离 |
| Keywords: | covalent organic framework membrane; Schiff base reaction; in-situgrowth; dye separation |
| 分类号: | TB383；X703 |
| DOI: | 10.20098/j.cnki.1001-5132.2025.1208 |
| 文献标识码: | A |
| 摘要: | 采用氢氧化钠改性的聚丙烯腈（PAN）膜作为基膜，1,3,5-三醛基间苯三酚（Tp）和4,4',4''-(1,3,5-三嗪-2,4,6-三基)三苯胺（Tta）分别作为醛单体与胺单体，利用质子酸催化使其发生席夫碱反应，在PAN基膜上原位生长得到nTpTta/mPAN共价有机框架（COF）膜。系统研究了反应单体含量对nTpTta/mPAN COF膜的表面形貌和染料分离性能的影响，并利用傅里叶变换红外光谱（FTIR）和X射线衍射仪（XRD）阐释了COF膜的化学结构以及结晶度。结果表明：最佳含量制备的3TpTta/mPAN COF膜具有明显的COF结晶度及三维网状膜面结构，在0.3MPa压力驱动下对染料（刚果红）的截留率高达99.6%，水通量为490.43L/(m2·h)。在长期稳定性测试中，3TpTta/mPAN COF膜对刚果红的截留率保持稳定，表明原位生长制备的COF膜具有优异的运行稳定性。 |
| Abstract: | In this study, sodium hydroxide modified polyacrylonitrile (PAN) membranes were used as the substrate. 1,3,5-triformylphloroglucinol (Tp) and 4,4',4''-(1,3,5-triazine-2,4,6-triyl) trianiline (Tta) were employed as aldehyde and amine monomers, respectively. The nTpTta/mPAN covalent organic framework (COF) membranes were obtained via in-situ growth on the PAN substrate through the Schiff base reaction catalyzed by Bronsted acid. The effects of reaction monomer content on the surface morphology and dye separation performance of nTpTta/mPAN COF membranes were systematically investigated. Meanwhile, Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) were utilized to elucidate the chemical structure and crystallinity of the COF membranes. The results showed that the 3TpTta/mPAN COF membrane prepared under the optimal monomer content exhibited distinct COF crystallinity and a three-dimensional network surface structure. Driven by a pressure of 0.3MPa, it achieved a high rejection rate of 99.6% for Congo red dye and a water flux of 490.43L/(m2·h). In the long-term stability test, the rejection rate of the 3TpTta/mPAN COF membrane for Congo red dye remained stable, indicating that the in-situ grown COF membrane had excellent operational stability. |
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| 备注/Memo: | 收稿日期：2025-12-15 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ 基金项目：浙江省“领雁”重点研发计划（2024C03132） 第一作者：党子浩，硕士研究生，主要研究方向为COF膜的制备及其废水处理应用。E-mail: dzh1791379004@163.com *通信作者：逯鹏，副研究员，主要研究方向为膜材料制备与膜过程。E-mail: lupeng@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
