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研究领域化学科学有机化学自由基化学
在活性金属有机框架材料中吸附二氧化

在活性金属有机框架材料中吸附二氧化

Xue Han ¹, Yuexian Hong ², Yujie Ma ¹, Wanpeng Lu ¹, Jiangnan Li ¹, Longfei Lin ¹, Alena M Sheveleva ¹, Floriana Tuna ^1,3, Eric J L McInnes ¹, Catherine Dejoie ⁴, Junliang Sun ², Sihai Yang ¹, Martin Schröder ¹

Xue Han ¹, Yuexian Hong ², Yujie Ma ¹

¹Department of Chemistry, University of Manchester, Manchester, M13 9PL, U.K.
²College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.
³Photon Science Institute, University of Manchester, Manchester, M13 9PL, U.K.
⁴European Synchrotron Radiation Facility (ESRF), Grenoble, 38043, France.

⁰Department of Chemistry, University of Manchester, Manchester, M13 9PL, U.K.

Journal of the American Chemical Society +

|

2020年八月14日

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在PubMed上查看摘要

概括

此摘要是机器生成的。

研究人员开发了一种新的金属有机框架,MFM-300(V),用于有效地去除二氧化 (NO2). 这种材料利用氧化还原活性中心捕获并将有毒的NO2转化为不那么有害的氧化 (NOx).

科学领域

材料科学
环境化学
纳米技术

背景情况

二氧化 (NO2) 是一种具有有害健康和环境影响的重要空气污染物.
有效的NO2减排技术对于改善空气质量至关重要.

研究的目的

使用氧化还原活性金属有机框架 (MOF),MFM-300 ((V) 研究NO2的反应吸附.
探索MFM-300 ((V) 作为从大气中去除NO2的吸收剂的潜力.

主要方法

在NO<sub>2</sub>吸附过程中分析结构变化.
各种实验技术来确认氧化还原反应和吸附机制.
异热吸附测量以量化NO2吸收能力.

主要成果

在MFM-300中,NO<sub>2</sub>的吸附导致了V (III) 到V (IV) 中心的氧化.
NO<sub>2</sub>被减少为NO,并且通过框架基的去质子化释放水.
在298K和1. 0bar时,达到13. 0mmolg-1的高同热NO2吸收.
在多个吸附 - 脱吸周期中,MOF表现稳定.

结论

MFM-300 (V) 具有高效的NO2降解吸附,为空气污染控制提供了一个有前途的途径.
这些发现激发了先进的氧化还原活性吸附剂的设计,用于有针对性的污染物消除.
这项研究强调了MOF在应对关键环境挑战方面的潜力.

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Besides iodine, other oxidizing or reducing agents can serve as titrants in redox titrations. Common oxidizing titrants include KMnO4, cerium(IV), and K2Cr2O7. The choice of oxidizing titrants depends on factors like stability, cost, analyte strength, and reaction rate between the analyte and titrant. KMnO4 is a strong oxidizing titrant that reduces from Mn(VII) to Mn(II) in a highly acidic solution, simultaneously oxidizing the analyte to a higher oxidation state. In this case, KMnO4 acts as a...

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