{"title":"水溶液中氧和臭氧光催化氧化草酸的研究","authors":"A. V. Levanov, A. V. Lapina, O. Ya. Isaikina","doi":"10.1134/S0036024424702716","DOIUrl":null,"url":null,"abstract":"<p><b>Abstract</b>—An experimental study has been carried out on the mineralization of oxalic acid H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> and other oxidation-resistant organic compounds in aqueous solutions under the influence of oxygen, ozone, and ultraviolet radiation. It was found that in acidic solutions H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> does not oxidize under the influence of ozone or UV irradiation in the presence of oxygen; when exposed simultaneously to O<sub>3</sub> + UV it has a low rate of oxidation. The possibility of photocatalysis of the mineralization process by Mn<sup>2+</sup>, MnO<span>\\(_{4}^{ - }\\)</span>, Fe<sup>3+</sup>, Co<sup>2+</sup>, BrO<span>\\(_{3}^{ - }\\)</span>, or IO<span>\\(_{3}^{ - }\\)</span> ions was studied The most effective photocatalysts are Fe<sup>3+</sup> ions: in their presence and under UV irradiation, a fairly rapid oxidation of oxalic acid to CO<sub>2</sub> occurs, as under the influence of O<sub>3</sub> and O<sub>2</sub>. The conditions for maximum ozone conversion during photomineralization of oxalic acid have been found. The possibility of oxidative destruction of a more oxidation-resistant substrate, acetic acid, is shown during ozonation and UV irradiation of solutions with Fe(III) and H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> additives.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"111 - 119"},"PeriodicalIF":0.7000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photocatalytic Oxidation of Oxalic Acid with Oxygen and Ozone in an Aqueous Solution\",\"authors\":\"A. V. Levanov, A. V. Lapina, O. Ya. Isaikina\",\"doi\":\"10.1134/S0036024424702716\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><b>Abstract</b>—An experimental study has been carried out on the mineralization of oxalic acid H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> and other oxidation-resistant organic compounds in aqueous solutions under the influence of oxygen, ozone, and ultraviolet radiation. It was found that in acidic solutions H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> does not oxidize under the influence of ozone or UV irradiation in the presence of oxygen; when exposed simultaneously to O<sub>3</sub> + UV it has a low rate of oxidation. The possibility of photocatalysis of the mineralization process by Mn<sup>2+</sup>, MnO<span>\\\\(_{4}^{ - }\\\\)</span>, Fe<sup>3+</sup>, Co<sup>2+</sup>, BrO<span>\\\\(_{3}^{ - }\\\\)</span>, or IO<span>\\\\(_{3}^{ - }\\\\)</span> ions was studied The most effective photocatalysts are Fe<sup>3+</sup> ions: in their presence and under UV irradiation, a fairly rapid oxidation of oxalic acid to CO<sub>2</sub> occurs, as under the influence of O<sub>3</sub> and O<sub>2</sub>. The conditions for maximum ozone conversion during photomineralization of oxalic acid have been found. The possibility of oxidative destruction of a more oxidation-resistant substrate, acetic acid, is shown during ozonation and UV irradiation of solutions with Fe(III) and H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> additives.</p>\",\"PeriodicalId\":767,\"journal\":{\"name\":\"Russian Journal of Physical Chemistry A\",\"volume\":\"99 1\",\"pages\":\"111 - 119\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2025-03-17\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Journal of Physical Chemistry A\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0036024424702716\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0036024424702716","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Photocatalytic Oxidation of Oxalic Acid with Oxygen and Ozone in an Aqueous Solution
Abstract—An experimental study has been carried out on the mineralization of oxalic acid H2C2O4 and other oxidation-resistant organic compounds in aqueous solutions under the influence of oxygen, ozone, and ultraviolet radiation. It was found that in acidic solutions H2C2O4 does not oxidize under the influence of ozone or UV irradiation in the presence of oxygen; when exposed simultaneously to O3 + UV it has a low rate of oxidation. The possibility of photocatalysis of the mineralization process by Mn2+, MnO\(_{4}^{ - }\), Fe3+, Co2+, BrO\(_{3}^{ - }\), or IO\(_{3}^{ - }\) ions was studied The most effective photocatalysts are Fe3+ ions: in their presence and under UV irradiation, a fairly rapid oxidation of oxalic acid to CO2 occurs, as under the influence of O3 and O2. The conditions for maximum ozone conversion during photomineralization of oxalic acid have been found. The possibility of oxidative destruction of a more oxidation-resistant substrate, acetic acid, is shown during ozonation and UV irradiation of solutions with Fe(III) and H2C2O4 additives.
期刊介绍：
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.
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