基于抗盐离子水合效应的三重网络zwitterionic多电解质水凝蒸发器,用于太阳能驱动的界面蒸发和海水淡化
Hongyu Ge1, Zhenhua Fang1, Jun Yang2
1Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, PR China.
Journal of colloid and interface science
|July 18, 2025
概括
这项研究介绍了一种新的3D太阳能蒸发器,使用PVA海绵,zwitterionic水凝和MWCNTs来有效地从盐水中生产淡水. 先进的设计克服了二维蒸发器的局限性,实现了高,稳定的蒸发率,并产生符合世卫组织标准的饮用水.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 传统的2D太阳能蒸发器在处理高度盐水时面临着有限的蒸发速度和盐污染的挑战.
- 盐离子对现有的太阳能淡化技术中的水运输和持续蒸发产生负面影响.
研究的目的:
- 开发一种新的三维 (3D) 太阳能蒸发器,以从盐水中有效和可持续地生产淡水.
- 通过先进的材料设计,在高盐度条件下提高水运输和蒸发效率.
主要方法:
- 使用聚乙烯醇 (PVA) 海绵,zwitterionic多电解质水凝和多壁碳纳米管 (MWCNTs) 制造3D蒸发器.
- 蒸发器在模拟太阳辐射 (1kW m-2) 下的性能与10重量%的盐水的表征.
- 评估长期稳定性,耐盐性和抗菌性质.
- 在自然的冬季条件下,在的海水下进行户外测试.
主要成果:
- 7厘米高的3D蒸发器在9个小时内在10%盐中实现了3.35kg m-2h-1的稳定蒸发率,没有盐沉积或降解.
- 兹维特基凝证明改善了水的运输,并激活了水分子以增强蒸发.
- 在户外实验中,从的海水中收集的淡水率为1.37 kg m−2 h−1,使离子度降低了3-4个数量级.
- 收集的淡水符合世界卫生组织的饮用水标准.
结论:
- 这种新的3D太阳能蒸发器为从盐水源生产淡水提供了经济高效和可持续的解决方案.
- 综合设计,特别是zwitterionic水凝,有效地减轻盐离子干扰,提高蒸发效率.
- 这项技术为下一代太阳能蒸发系统的淡化和废水处理提供了一个有希望的途径.
更多相关视频
09:39Proof-of-Concept for Gas-Entrapping Membranes Derived from Water-Loving SiO2/Si/SiO2 Wafers for Green Desalination
Published on: March 1, 2020
7.5K
10:19Three-Dimensionally Printed Microfluidic Cross-flow System for Ultrafiltration/Nanofiltration Membrane Performance Testing
Published on: February 13, 2016
11.5K
相关概念视频
01:17Ion Exchange
664
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
664
03:13Intermolecular Forces
61.2K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
61.2K
01:09Colloidal precipitates
766
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
766