Hydrogen-substituted graphdiyne-facilitated polyamide membrane with improvement of water permeance

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2025-02-19 DOI:10.1016/j.desal.2025.118723

Wenjing Han , Yawen Tian , Zhou Qu , Chenyu Lai , Haoran Wang , Qianxi Yang , Hongwei Fan , Hong Meng

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引用次数: 0

Abstract

High-permeance polyamide (PA) thin film composite (TFC) membranes with excellent rejection are essential for nanofiltration. The incorporating of an interlayer has been identified as an effective approach to achieve this objective. Herein, the hydrogen-substituted graphdiyne (HsGDY) interlayer modulated the micro-structure and surface/interface characteristics of PA membrane. The resultant HsGDY-PA membrane featuring a brick-mud architecture, enhances the surface hydrophilicity and provides more water transfer channels. Compared to the PA without HsGDY interlayer, the water permeance increased by 1.5 times to 153.9 L·m⁻²·h⁻¹·MPa⁻¹ with Na₂SO₄ rejection above 96.5 %. A 100-hour NF assessment demonstrates good stability of membrane. Additionally, the HsGDY-PA membrane exhibits over 90 % rejection for high-concentration salts solutions, such as 5.0 g·L⁻¹ Na₂SO₄ and MgSO₄ solutions, indicating its potential for the treatment of industrial wastewater. Notably, the separation factors for NaCl/antibiotics exceed 24.6, demonstrating its capability for the selective removal of NaCl from antibiotics wastewater systems.

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来源期刊

Desalination 工程技术-工程：化工

CiteScore

14.60

自引率

20.20%

发文量

619

审稿时长

41 days

期刊介绍： Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.