气凝胶
升华(心理学)
材料科学
超临界干燥
氧化物
超临界流体
多孔性
纳米技术
化学工程
溶剂
有机化学
复合材料
化学
冶金
心理治疗师
工程类
心理学
作者
Lili Ren,Sumin Cui,Fengchao Cao,Qing‐Hui Guo
标识
DOI:10.1002/anie.201406387
摘要
Abstract Inorganic oxide aerogels have unique thermal, optical, electrical, magnetic, and chemical properties, which result in them potentially having a broad range of applications. However, their preparation is commonly based on a supercritical drying method, which greatly limits real applications of aerogels and their commercialization. Here we demonstrate a general method for drying wet gels to form aerogels that is based on the sublimation of organic solvent. The organic solvent must have a low surface tension, undergo sublimation easily, and have a high freezing point to allow the rapid synthesis of monolithic inorganic oxide aerogels under vacuum conditions. This cost‐effective process will facilitate application of aerogel materials. This approach may also be used for the preparation of other porous materials, whose theoretical and practical applications should be investigated.
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