Muhammad Fernadi Lukman, Stefan Schlayer, Andreas Pöppl
{"title":"In Situ Hyperfine Spectroscopy for Sensing Dihydrogen Isotopologues on the ZIF-8 Framework","authors":"Muhammad Fernadi Lukman, Stefan Schlayer, Andreas Pöppl","doi":"10.1021/acs.jpcc.4c07894","DOIUrl":null,"url":null,"abstract":"An <i>in situ</i> pulsed electron paramagnetic resonance spectroscopy approach based on three-pulse electron spin echo envelope modulation has been implemented to monitor the adsorption of deuterium (D<sub>2</sub>) and deuterium hydride (HD) gases into the pores of ZIF-8 on a local microscopic scale within the environment of paramagnetic spin probes such as TEMPO radicals and Cu<sup>2+</sup> ions. The desorption of D<sub>2</sub> could be followed up to a temperature of 40 K employing the TEMPO probe, where the majority of the gas has left the pores of ZIF-8. In contrast, H<sub>2</sub> gas was not detectable at 20 K with this technique due to the predominant <i>para</i>-hydrogen form. The approach utilizing TEMPO radicals can be used as reliable probes to sense weakly coupled D<sub>2</sub> or HD adsorbed into the pores of ZIF-8 without interference from the magnetically active <sup>14</sup>N nuclei from the organic linker as we observed for HD adsorption on the Cu<sup>2+</sup>-doped ZIF-8 material.","PeriodicalId":61,"journal":{"name":"The Journal of Physical Chemistry C","volume":"41 1","pages":""},"PeriodicalIF":3.3000,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Physical Chemistry C","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1021/acs.jpcc.4c07894","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
An in situ pulsed electron paramagnetic resonance spectroscopy approach based on three-pulse electron spin echo envelope modulation has been implemented to monitor the adsorption of deuterium (D2) and deuterium hydride (HD) gases into the pores of ZIF-8 on a local microscopic scale within the environment of paramagnetic spin probes such as TEMPO radicals and Cu2+ ions. The desorption of D2 could be followed up to a temperature of 40 K employing the TEMPO probe, where the majority of the gas has left the pores of ZIF-8. In contrast, H2 gas was not detectable at 20 K with this technique due to the predominant para-hydrogen form. The approach utilizing TEMPO radicals can be used as reliable probes to sense weakly coupled D2 or HD adsorbed into the pores of ZIF-8 without interference from the magnetically active 14N nuclei from the organic linker as we observed for HD adsorption on the Cu2+-doped ZIF-8 material.
期刊介绍：
The Journal of Physical Chemistry A/B/C is devoted to reporting new and original experimental and theoretical basic research of interest to physical chemists, biophysical chemists, and chemical physicists.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
