通过修改金属有机框架-199及其带有可逆变色的便携式测试纸进行可视化检测水
Dingfan Yan1, Jinbo Zhang1, Fang Yuan1
1College of Urban Construction, Nanjing Tech University, Puzhu Road 30, Nanjing 211816, PR China.
概括
一种新型的胺修饰金属有机框架-199复合物,可快速,可视化检测有机溶剂和环境空气中的水含量. 这种可重复使用的测试纸为复杂的电化学或光方法提供了简化的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 精确确定有机溶剂中的水含量对于各种工业过程至关重要.
- 现有的方法,如电化学或光策略,往往涉及复杂的程序和专门的设备.
研究的目的:
- 开发一种新,便携,可重复使用的材料,用于可视化定量检测水.
- 为现有的水检测方法提供简化的替代方案.
主要方法:
- 用胺修饰的金属有机框架-199复合材料 (MOF-199@melamine) 的制造.
- 利用复合材料在与水分子相互作用时的结构变化和颜色变化.
- 开发用于实际应用的PTFE-MOF-199@melamine测试纸.
- 使用二甲基形式胺 (DMF) 进行材料再生的演示.
主要成果:
- 由于客H2O分子动态,MOF-199@melamine复合材料表现出显著的颜色变化,使可视化检测成为可能.
- 在30秒内实现了有机溶剂中水的定量检测.
- 开发的测试纸精确测量了有机溶剂中的水含量从0%到98% (v/v),相对湿度从11%到85%.
- 试验纸证明可回收多达四次,再生率超过90%.
结论:
- 开发的MOF-199@胺复合物和随后的测试纸提供了一种简单,快速和可视的水检测方法.
- 这种方法克服了与传统方法相关的复杂操作流程和信号输出/读取系统的局限性.
- 该材料的可回收性和高再生率有助于其实际和可持续的应用.
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