水解法制备二氧化硅包裹氧化亚铜及其抗氧化性能研究OA
Preparation of SiO2-Coated Cu2O via Hydrolysis Method and Study on Its Oxidation Resistance
本研究以Cu2O为内核原料,正硅酸乙酯(TEOS)为硅源,采用水解法成功制备出具有核壳结构的SiO2包裹Cu2O试样(Cu2O@SiO2).利用X射线衍射(XRD)、透射电子显微镜(TEM)、能谱仪(EDS)、傅里叶变换红外光谱(FT-IR)和综合热分析(DSC-TG)系统表征了试样的显微结构和抗氧化性能.结果表明,在反应温度为45℃、NH3·H2O浓度为3.96%(质量分数)、TEOS浓度为3.84%(质量分数)的条件下制备的Cu2O@SiO2,经380℃氧化气氛热处理后,Cu2O仍为主晶相.相较于未包裹处理的纯相Cu2O,Cu2O@SiO2的氧化起始温度由230℃提高至385℃,提高了155℃.
This study successfully prepared the SiO2 coated Cu2O samples(Cu2O@SiO2)with a core-shell structure via a hydrolysis method,using Cu2O as the core material and tetraethyl orthosilicate(TEOS)as the silicon source.The microstructure and oxidation resistance of the samples were systematically characterized by X-ray diffraction(XRD),transmission electron microscopy(TEM),energy dispersive spectroscopy(EDS),Fourier transform infrared spectroscopy(FT-IR),and simultaneous DSC-TG analysis.The results indicate that the Cu2O@SiO2 prepared under the conditions of a reaction temperature of 45℃,NH3·H2O concentration of 3.96%(mass fraction),and TEOS concentration of 3.84%(mass fraction)retained Cu2O as the primary crystalline phase even after heat treatment at 380℃in an oxidizing atmosphere.Compared to uncoated pure Cu2O,the initial oxidation temperature of the Cu2O@SiO2 increases from 230℃to 385℃,representing an improvement of 155℃.
杨月;苗立锋;江新民;廖羚辰;包镇红
景德镇陶瓷大学材料科学与工程学院,景德镇 333403国家日用及建筑陶瓷工程技术研究中心,景德镇 333403景德镇同门瓷业有限公司,景德镇 333426景德镇陶瓷大学材料科学与工程学院,景德镇 333403国家日用及建筑陶瓷工程技术研究中心,景德镇 333403
通用工业技术
Cu2OSiO2包裹核壳结构抗氧化性能
Cu2OSiO2coatingcore-shell structureoxidation resistance
《硅酸盐通报》 2026 (2)
625-633,9
江西省重点研发揭榜挂帅项目(20224BBE51050)国家自然科学基金(52262008)景德镇市科技项目(20224GY008-15)
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