Salt-resistant, self-healing Janus polypyrrole melamine foam for oil/water separation and solar-driven desalination

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2025-03-02 DOI:10.1016/j.desal.2025.118708

Bin Zhan , Kaiteng Zhang , Zhibiao Chen , Wenting Zhou , Xinlin Li , Maryam Aliabadi , Stegmaier Thomas , Urszula Stachewicz , Yan Liu

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引用次数: 0

Abstract

Solar-driven desalination provides a new strategy to address the increasingly severe water shortage issue. Herein, a novel photothermal Janus polypyrrole melamine foam (JPMF) with self-healing and salt-resistance properties was fabricated by oxidative polymerization and one-side hydrophobic spray treatment. The superhydrophobicity on the top of JPMF surface presented rapid photothermal responsiveness, while the bottom surface showed superhydrophilicity and facilitated the continuous water supply. Under the irradiation of 1.0 sun, the evaporation rate and energy conversion efficiency of Janus JPMF was 1.52 kg·m⁻²·h⁻¹ and 92.02 %, respectively. Additionally, the JPMF was able to on demand separate various oil/water mixtures and emulsions, showing satisfactory separation efficiency (99.7 %). Moreover, the excellent photothermal properties of JPMF endowed it with self-healing properties, restoring the wettability from superhydrophilicity to superhydrophobicity after light irradiation. Besides, JPMF exhibited excellent salt resistance and effectively prevented salt deposition on the evaporation surface. The as-prepared JPMF provides a new approach to environmental protection and mitigating the freshwater crisis.

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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.