在低湿度下使用Ni-修改的MOF-5有效捕获水:可扩展的大气水收集系统
Momna Aziz1, Raouf Hassan2, Muhammad Saeed-Ul-Hassan1
1Department of Chemistry, COMSATS University Islamabad Abbottabad Campus 22060 Pakistan bushraismail@cuiatd.edu.pk mscchem70795@gmail.com msaeed5651123@gmail.com muhammadEhtasham10@gmail.com +92 992 383595 +92 992 383592.
RSC advances
|September 19, 2025
概括
这项研究开发了添加的MOF-5材料,用于大气中的水收集. 20%的Ni-MOF-5显示出优越的吸水能力,为干旱地区的可持续水产提供了有希望的解决方案.
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:
- 全球水资源短缺需要可持续的水源解决方案.
- 基于吸附的大气水收集 (SBAWH) 是有希望的,但受到吸附材料性能的限制.
- 对于在相对湿度 (RH) 低至中等情况下的高吸水量,需要有效的吸水剂.
研究的目的:
- 为SBAWH合成和评估原始MOF-5及其添加衍生物 (20%和40%Ni-MOF-5) .
- 系统地比较它们的吸水能力,特别是在低RH条件下.
- 研究Ni-MOF-5作为下一代SBAWH系统的可扩展吸附剂的潜力.
主要方法:
- 使用直接混合方法合成MOF-5和Ni-MOF-5吸附剂.
- 材料的特征包括XRD,FTIR,SEM和EDX.
- 在受控的RH (35-75%) 下,使用定制的AWH原型测量了水吸附等温度.
主要成果:
- 在65%的RH下,吸水能力为MOF-5的151 mgg-1,20%的Ni-MOF-5的162 mgg-1和40%的Ni-MOF-5的142 mgg-1.
- 20%的Ni-MOF-5表现出卓越的性能,特别是在低湿度条件下.
- 热力学和动力学分析表明,这是一个自发的,外热的,化学吸收主导的吸附过程.
结论:
- 兴奋剂增强了MOF-5在SBAWH应用中的吸水能力.
- 20%的Ni-MOF-5被确定为一种非常有前途的吸附剂,可有效地收集水,即使在干旱的环境中也是如此.
- 这项研究有助于开发可扩展和有效的吸收材料,用于可持续的水解决方案.
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