化工新型材料

化工新型材料 ›› 2024, Vol. 52 ›› Issue (8) : 116-121. DOI: 10.19817/j.cnki.issn1006-3536.2024.08.018

新材料与新技术

Ag₃PO₄/g-C₃N₄聚酰胺复合纳滤膜的制备及性能研究

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Preparation and properties of Ag₃PO₄/g-C₃N₄ polyamide composite nanofiltration membrane

Huai Yanjin¹, Yue Xilong², Wu Tong², Fan Hongjie², Qiao Yifu¹, Zhu Binglong¹, Zhang Manying¹

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Received
2023-04-24
Issue Date	Revised Date
2024-08-15	2023-04-24

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摘要

以聚砜(PSf)超滤膜为基膜,以哌嗪(PIP)为水相单体、均苯三甲酰氯(TMC)为油相单体在其表面进行界面聚合反应,通过在水相单体中加入不同剂量的Ag₃PO₄/g-C₃N₄,制备出Ag₃PO₄/g-C₃N₄聚酰胺(PA)复合纳滤膜。系统研究了Ag₃PO₄/g-C₃N₄材料的添加对复合纳滤膜形貌、过滤、截留及抗污染性能的影响。当Ag₃PO₄/g-C₃N₄在水溶液中的含量从0%增加到0.05%时,复合膜的纯水通量从19.71L/(m²·h)增加到27.27L/(m²·h),同时对Na₂SO₄保持着较高的截留率。抗菌实验表明,Ag₃PO₄/g-C₃N₄/PA复合纳滤膜对铜绿假单胞杆菌有明显的抑制生长作用。通过界面聚合将Ag₃PO₄/g-C₃N₄引入复合纳滤膜中,可显著提高纳滤膜的过滤及抗污染性能。

Abstract

Ag₃PO₄/g-C₃N₄ polyamide (PA) composite nanofiltration membrane was prepared by adding different doses of Ag₃PO₄/g-C₃N₄ into the aqueous monomer using polysulfone (PSf) ultrafiltration membrane as the base membrane,piperazine (PIP) as the aqueous monomer and trimesoyl chloride (TMC) as the oil phase monomer as the interfacial polymerization reaction on the surface.The effects of the addition of Ag₃PO₄/g-C₃N₄ on the morphology,filtration,retention and anti-fouling properties of composite nanofiltration membranes were systematically studied.When the content of Ag₃PO₄/g-C₃N₄ in aqueous solution increased from 0wt% to 0.05wt%,the pure water flux of the composite membrane increased from 19.71L·m^-2·h^-1 to 27.27L·m^-2·h^-1,while maintaining a high retention rate for Na₂SO₄.Antibacterial experiments showed that Ag₃PO₄/g-C₃N₄/PA composite nanofiltration membrane had obvious inhibitory effect on the growth of Pseudomonas aeruginosa.By interfacial polymerization,Ag₃PO₄/g-C₃N₄ was introduced into polyamide composite nanofiltration membrane,which could significantly improve the filtration and anti-pollution properties of the nanofiltration membrane.

关键词

石墨相氮化碳载磷酸银 / 界面聚合 / 纳滤膜 / 抗污染

Key words

graphite phase carbon nitride silver phosphate / interfacial polymerization / nanofiltration membrane / anti-pollution

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Ag₃PO₄/g-C₃N₄聚酰胺复合纳滤膜的制备及性能研究[J]. 化工新型材料, 2024, 52(8): 116-121 DOI:10.19817/j.cnki.issn1006-3536.2024.08.018

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