{"title":"Stable synthesis of high aspect ratio submicron SiO2 wires by wet chemical methods","authors":"Tianfeng Yang, Dongxue Ren, Xiaping Zhu, Qing Li, Haiyan Li, Jia Chen, Hongyi Sun, Yonghua Sun","doi":"10.1016/j.jnoncrysol.2025.123473","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a method for the production of SiO<sub>2</sub> wires in a system composed of isopropanol, polyvinylpyrrolidone, ammonia and sodium citrate. The typical wires were mildly curved with an average diameter of 500 nm and an aspect ratio up to 60 or more. A 50-fold expansion of this process still gave stable wires with a yield of about 86 %. Monitoring the sodium levels along the SiO<sub>2</sub> wires revealed that sodium was present in different parts of the wires. Based on this phenomenon, we propose a growth mechanism for SiO<sub>2</sub> wires. The present system produces SiO<sub>2</sub> wires more stably and efficiently than the previously reported n-pentanol-PVP-ammonia-sodium citrate method, while significantly reducing both the amount of PVP and the preparation time.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"655 ","pages":"Article 123473"},"PeriodicalIF":3.2000,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Non-crystalline Solids","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022309325000894","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
This study presents a method for the production of SiO2 wires in a system composed of isopropanol, polyvinylpyrrolidone, ammonia and sodium citrate. The typical wires were mildly curved with an average diameter of 500 nm and an aspect ratio up to 60 or more. A 50-fold expansion of this process still gave stable wires with a yield of about 86 %. Monitoring the sodium levels along the SiO2 wires revealed that sodium was present in different parts of the wires. Based on this phenomenon, we propose a growth mechanism for SiO2 wires. The present system produces SiO2 wires more stably and efficiently than the previously reported n-pentanol-PVP-ammonia-sodium citrate method, while significantly reducing both the amount of PVP and the preparation time.
期刊介绍：
The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid.
In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.
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