Organic-Inorganic Hybrid Nanocrystal-based Cryogels with Size-Controlled Mesopores and Macropores
Organic-Inorganic Hybrid Nanocrystal-based Cryogels with Size-Controlled Mesopores and Macropores
复制标题
具有尺寸控制的中孔和大孔的有机-无机杂化纳米晶冷冻凝胶
DOI：
10.1021/acs.langmuir.0c03112
复制
发表时间：
2021
期刊：
影响因子：
3.9
通讯作者：
Ishigaki Takamasa
中科院分区：
文献类型：
--
作者：
Tarutani Naoki;Hashimoto Mana;Ishigaki Takamasa
基于纳米晶体的加工技术已经引起了人们极大的兴趣，用于制造具有控制结晶度和精细多孔结构的高功能材料。在这项研究中，我们重点研究了使用层状氢氧化镍嵌入丙烯酸盐阴离子的纳米晶体基材料的无模板合成。丙烯酸酯的聚合促进了纳米晶体的互连和均匀凝胶网络的形成。冻干后的冷库孔隙平均直径为4.8 nm（中尺度）~ 68.9 nm（宏观尺度）。研究发现，初始纳米晶体的表面特征决定了相互连接的物质与反应介质的相分离趋势和形成的多孔结构。我们相信本研究可以为无模板纳米晶体多孔材料的设计提供可能。
Nanocrystal-based processing has attracted significant interest for the fabrication of highly functional materials with controlled crystallinity and fine porous structures. In this study, we focused on the template-free synthesis of nanocrystal-based materials with size-tailored pores using layered nickel hydroxide intercalated with acrylate anions. Polymerization of the acrylates encouraged interconnection of the nanocrystals and the formation of homogeneous gel networks. Cryogels after freeze-drying had pores with an average diameter from 4.8 nm (mesoscale) to 68.9 nm (macroscale). It was found that the surface characteristics of starting nanocrystals determined the phase separation tendency of interconnected species from the reaction media and resultant porous structures. We believe that the present study can enable the design of template-free nanocrystal-based porous materials.