{"title":"抗坏血酸存在下微波辅助水热合成MnO/C复合材料","authors":"G. S. Zakharova, Z. A. Fattakhova, A. A. Trofimov","doi":"10.1134/S0036023624602903","DOIUrl":null,"url":null,"abstract":"<p>Composites MnO/C based on cubic manganese monoxide were synthesized by microwave-assisted hydrothermal treatment of an aqueous solution of potassium permanganate with ascorbic acid and subsequent annealing of the precursor in an inert atmosphere at a temperature of 500°C. It was found that the molar ratio of the reaction mixture components, Mn : C<sub>6</sub>H<sub>8</sub>O<sub>6</sub> = 1 : (0.75‒1.5), is the key parameter determining the features of composite formation. A mechanism of formation of the MnO/C composite was proposed. The maximum carbon content in the composite material was ~3 wt %. The main physicochemical characteristics of the synthesized composites were determined using powder X-ray diffraction, thermogravimetric analysis, Raman spectroscopy, scanning electron microscopy, and low-temperature nitrogen adsorption. The behavior of MnO/C as an anode material for a lithium-ion battery showed that the composite is efficient only at high current densities.</p>","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"69 12","pages":"1844 - 1852"},"PeriodicalIF":1.8000,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microwave-Assisted Hydrothermal Synthesis of MnO/C Composite in the Presence of Ascorbic Acid\",\"authors\":\"G. S. Zakharova, Z. A. Fattakhova, A. A. Trofimov\",\"doi\":\"10.1134/S0036023624602903\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Composites MnO/C based on cubic manganese monoxide were synthesized by microwave-assisted hydrothermal treatment of an aqueous solution of potassium permanganate with ascorbic acid and subsequent annealing of the precursor in an inert atmosphere at a temperature of 500°C. It was found that the molar ratio of the reaction mixture components, Mn : C<sub>6</sub>H<sub>8</sub>O<sub>6</sub> = 1 : (0.75‒1.5), is the key parameter determining the features of composite formation. A mechanism of formation of the MnO/C composite was proposed. The maximum carbon content in the composite material was ~3 wt %. The main physicochemical characteristics of the synthesized composites were determined using powder X-ray diffraction, thermogravimetric analysis, Raman spectroscopy, scanning electron microscopy, and low-temperature nitrogen adsorption. The behavior of MnO/C as an anode material for a lithium-ion battery showed that the composite is efficient only at high current densities.</p>\",\"PeriodicalId\":762,\"journal\":{\"name\":\"Russian Journal of Inorganic Chemistry\",\"volume\":\"69 12\",\"pages\":\"1844 - 1852\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2024-12-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Russian Journal of Inorganic Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0036023624602903\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, INORGANIC & NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Inorganic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0036023624602903","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
Microwave-Assisted Hydrothermal Synthesis of MnO/C Composite in the Presence of Ascorbic Acid
Composites MnO/C based on cubic manganese monoxide were synthesized by microwave-assisted hydrothermal treatment of an aqueous solution of potassium permanganate with ascorbic acid and subsequent annealing of the precursor in an inert atmosphere at a temperature of 500°C. It was found that the molar ratio of the reaction mixture components, Mn : C6H8O6 = 1 : (0.75‒1.5), is the key parameter determining the features of composite formation. A mechanism of formation of the MnO/C composite was proposed. The maximum carbon content in the composite material was ~3 wt %. The main physicochemical characteristics of the synthesized composites were determined using powder X-ray diffraction, thermogravimetric analysis, Raman spectroscopy, scanning electron microscopy, and low-temperature nitrogen adsorption. The behavior of MnO/C as an anode material for a lithium-ion battery showed that the composite is efficient only at high current densities.
期刊介绍：
Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
