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硝酸根自由基与DMPO在非水介质中的反应：一种突出硝酸根自由基在光催化过程中作用的新型检测工具。

Reaction of Nitrate Radicals and DMPO in Non-Aqueous Media: A Novel Detection Tool to Highlight the Nitrate Radical Role in Photocatalytic Processes.

作者信息

Zollo Alessia, Gottuso Alessandro, Palmisano Leonardo, Giamello Elio, Parrino Francesco, Livraghi Stefano

机构信息

Department of Chemistry and NIS Centre, University of Torino, Via Pietro Giuria 7, Torino, 10125, Italy.

Department of Industrial Engineering, University of Trento, Via Sommarive 9, Trento, 38123, Italy.

出版信息

Angew Chem Int Ed Engl. 2025 Jun 2;64(23):e202505313. doi: 10.1002/anie.202505313. Epub 2025 Apr 2.

DOI:10.1002/anie.202505313
PMID:40127110
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12124427/
Abstract

The reaction of DMPO as the spin trapping agent with nitrate radicals photocatalytically generated results in the formation of DMPOX showing a highly specific EPR spectrum. The method can be used as a semi-quantitative and convenient way to detect nitrate radicals in non-aqueous solutions/suspensions, which was never achieved up to now through EPR spectroscopy. Results support in a more direct way the proposed generation and reactivity of nitrate radicals in photocatalytic media and open a new chapter in the field of heterogeneous photocatalysis.

摘要

作为自旋捕获剂的DMPO与光催化产生的硝酸根自由基反应，会生成显示出高度特异性电子顺磁共振（EPR）谱的DMPOX。该方法可作为一种半定量且便捷的方式，用于检测非水溶液/悬浮液中的硝酸根自由基，这是迄今为止通过EPR光谱法从未实现过的。研究结果以更直接的方式支持了光催化介质中硝酸根自由基的生成及反应活性，并为多相光催化领域开启了新篇章。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/a299e02e343e/ANIE-64-e202505313-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/00b60e83783d/ANIE-64-e202505313-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/87153a56fb26/ANIE-64-e202505313-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/219a1b2eabbe/ANIE-64-e202505313-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/a299e02e343e/ANIE-64-e202505313-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/00b60e83783d/ANIE-64-e202505313-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/87153a56fb26/ANIE-64-e202505313-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/219a1b2eabbe/ANIE-64-e202505313-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c587/12124427/a299e02e343e/ANIE-64-e202505313-g005.jpg

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