在悬浮滴中ZIF-8无容器化学合成期间的蒸发动力学
Yuhang Zheng1, Qiang Zhuang2, Ying Ruan1
1MOE Key Laboratory of Materials Physics and Chemistry Under Extraordinary Conditions, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, 710072, China. ruany@nwpu.edu.cn.
Physical chemistry chemical physics : PCCP
|July 5, 2023
概括
在无容器合成使用声波悬浮的泽奥利特化伊米达酸框架-8 (ZIF-8) 中,产生了较小的粒子. 滴滴蒸发显著影响了ZIF-8的合成,提高了其废水处理能力.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 声学 声学 在声学方面
背景情况:
- 岩性意达酸框架 (ZIFs) 是一种先进的多孔材料,具有多样化的应用.
- 无容器合成提供了独特的优势,比传统的方法通过减少污染,并使新的材料特性.
- 声波悬浮为在受控环境中进行无容器处理提供了一个平台.
研究的目的:
- 在无容器状态下使用声波悬浮合成泽奥利特物质伊米达酸框架-8 (ZIF-8).
- 研究滴滴蒸发对ZIF-8合成动力学和粒子特性的影响.
- 评估合成的ZIF-8在从废水中去除酸的性能.
主要方法:
- 在甲醇中通过声学悬浮合成ZIF-8的无容器合成.
- 在现场监测滴水蒸发动力学 (形态,度,温度).
- 有限元素方法 (FEM) 模拟声场分布.
- 吸附实验,以评估从废水中去除酸的情况.
主要成果:
- 与传统方法相比,声学悬浮合成导致ZIF-8具有明显的粒子大小分布.
- 滴滴蒸发引发了显著的形态变化和振荡,影响了合成过程.
- 没有容器的ZIF-8证明了有效吸附酸,遵循一个伪二阶动力模型.
结论:
- 声波悬浮是无容器ZIF-8合成的可行方法,可以控制粒子特性.
- 滴滴蒸发在ZIF-8形成和在声波悬浮下粒子大小中起着至关重要的作用.
- 合成的ZIF-8显示出对环境应用的希望,特别是在废水整治中.
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