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Synergistic Effect of Ti3C2Tx MXene Nanosheets and Tannic Acid–Fe3+ Network in Constructing High-Performance Hydrogel Composite Membrane for Photothermal Membrane Distillation
Nano Letters ( IF 9.6 ) Pub Date : 2024-01-02 , DOI: 10.1021/acs.nanolett.3c04159 Na Zhang 1 , Jiaojiao Zhang 1 , Xiaohui Zhu 1 , Shideng Yuan 1 , Dong Wang 1 , Haoran Xu 1 , Zhining Wang 1
Nano Letters ( IF 9.6 ) Pub Date : 2024-01-02 , DOI: 10.1021/acs.nanolett.3c04159 Na Zhang 1 , Jiaojiao Zhang 1 , Xiaohui Zhu 1 , Shideng Yuan 1 , Dong Wang 1 , Haoran Xu 1 , Zhining Wang 1
Affiliation
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Photothermal membrane distillation (PMD) has emerged as a promising and sustainable approach for seawater desalination and wastewater purification. However, the wide application of the technique is severely impeded by low freshwater production and membrane fouling/wetting issues. Herein, we developed an advanced hydrogel-engineered membrane with simultaneously enhanced photothermal conversion capacity and desired fouling and wetting resistance for PMD. By the synergies of photothermal Ti3C2Tx MXene nanosheets and the tannic acid–Fe3+ network in the hydrogel, the membrane was endowed with excellent surface self-heating ability, yielding the highest freshwater production rate (1.71 kg m–2 h–1) and photothermal efficiency among the fabricated hydrogel composite membranes under 1 sun irradiation. Meanwhile, the PMD membrane could robustly resist oil-induced fouling and surfactant-induced wetting, significantly extending the membrane lifespan in treating contaminated saline water. Furthermore, when desalinating real seawater, the membrane exhibited superior durability with a stable vapor flux and excellent ion rejection (e.g., 99.24% for boron) for 100 h.
中文翻译：
Ti3C2TX MXene纳米片和单宁酸-Fe3+网络在构建用于光热膜蒸馏的高性能水凝胶复合膜中的协同效应
光热膜蒸馏（PMD）已成为一种有前途且可持续的海水淡化和废水净化方法。然而，该技术的广泛应用受到淡水产量低和膜污染/润湿问题的严重阻碍。在此，我们开发了一种先进的水凝胶工程膜，同时增强了 PMD 的光热转换能力和所需的防污性和润湿性。通过光热Ti 3 C 2 T x MXene纳米片和水凝胶中单宁酸-Fe 3+网络的协同作用，该膜具有优异的表面自加热能力，产生最高的淡水生产率（1.71 kg m –2 h –1 ）和所制造的水凝胶复合膜在 1 个太阳照射下的光热效率。同时，PMD膜可以有效抵抗油引起的污垢和表面活性剂引起的润湿，显着延长膜在处理污染盐水时的使用寿命。此外，在对真实海水进行淡化时，该膜在100小时内表现出优异的耐久性，具有稳定的蒸气通量和优异的离子截留率（例如，硼的截留率为99.24%）。
更新日期：2024-01-02
中文翻译：
Ti3C2TX MXene纳米片和单宁酸-Fe3+网络在构建用于光热膜蒸馏的高性能水凝胶复合膜中的协同效应
光热膜蒸馏（PMD）已成为一种有前途且可持续的海水淡化和废水净化方法。然而，该技术的广泛应用受到淡水产量低和膜污染/润湿问题的严重阻碍。在此，我们开发了一种先进的水凝胶工程膜，同时增强了 PMD 的光热转换能力和所需的防污性和润湿性。通过光热Ti 3 C 2 T x MXene纳米片和水凝胶中单宁酸-Fe 3+网络的协同作用，该膜具有优异的表面自加热能力，产生最高的淡水生产率（1.71 kg m –2 h –1 ）和所制造的水凝胶复合膜在 1 个太阳照射下的光热效率。同时，PMD膜可以有效抵抗油引起的污垢和表面活性剂引起的润湿，显着延长膜在处理污染盐水时的使用寿命。此外，在对真实海水进行淡化时，该膜在100小时内表现出优异的耐久性，具有稳定的蒸气通量和优异的离子截留率（例如，硼的截留率为99.24%）。
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