酸-有机框架及其光催化活性上的 siderophore 类型连接器的影响
Natalia M Padial1, Javier Castells-Gil1, Neyvis Almora-Barrios1
1Universidad de Valencia (ICMol) , Catedrático José Beltrán-2 , 46980 Paterna , Spain.
Journal of the American Chemical Society
|July 19, 2019
概括
研究人员开发了第一种受 siderophores 启发的酸盐金属有机框架 (MOF). 这种新的多孔材料MUV-11具有光活性和化学稳定性,扩大了MOF化学的潜在应用.
科学领域:
- 材料科学
- 无机化学
- 超分子化学
背景情况:
- 金属有机框架 (MOF) 由于依赖碳酸盐或酸盐结合剂,其化学稳定性有限.
- 开发具有水解稳定的金属连接器连接的新合成平台对于扩大MOF应用至关重要.
- 作为天然铁载体的 siderophores 在水性环境中利用稳定的酸盐和甲基酸盐组进行金属协调.
研究的目的:
- 报告第一个酸盐金属有机框架 (MOF) 的合成.
- 研究这种新型MOF的特性和潜在应用,特别是光催化.
- 探索酸盐化学与MOF合成的各种前体的兼容性.
主要方法:
- 直接合成晶体,多孔的酸MOF (MUV-11).
- 高通量合成以测试与多种盐的兼容性.
- 用于评估光催化活性的光电化学和催化试验
- 计算模型以合理化观察到的活动差异.
主要成果:
- 一种表面面积接近800 m2/g的多孔物质MUV-11的成功合成.
- MUV-11在酸性条件下表现出光活性和良好的化学稳定性.
- 酸的化学成分与各种前体相容,使单晶相形成.
- 计算分析揭示了 siderophore 启发化学如何改变电子结构,影响光催化性能.
结论:
- 酸MOF是一种具有增强水解稳定的新型多孔材料.
- MUV-11对光催化应用具有前景,其性能受其独特的电子结构的影响.
- 这种以 siderophore 为灵感的方法成功地扩大了可访问的 MOF 前体和功能.
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