树枝状纤维形二氧化硅纳米粒子的研究进展  

Research Progress of Dendritic Fibrous Nano-silica(DFNS)

作　　者：王亚斌 刘忠[2,3] 史时辉 呼科科 张琰图 郭敏[2,3] WANG Ya-Bin;LIU Zhong;SHI Shi-Hui;HU Ke-Ke;ZHANG Yan-Tu;GUO Min(College of Chemistry and Chemical Engineering, Yan'an University, Yan'an 716000, China;Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake esources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences,Xining 810008, China;Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining 810008, China)

机构地区：[1]延安大学化学与化工学院,延安716000 [2]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,西宁810008 [3]青海省盐湖资源化学重点实验室,西宁810008

出　　处：《无机材料学报》2018年第12期1274-1288,共15页Journal of Inorganic Materials

基　　金：国家自然科学基金(U1607105);中国科学院青年促进会项目(2016377);陕西省自然科学基金(2016ZDJC-19);延安大学博士科研启动项目(YDBK2017-39,YDBK2016-14);青海省科技项目(2018-GX-101,2018-ZJ-722).

摘　　要：与传统二氧化硅介孔材料相比,树枝状纤维形二氧化硅纳米粒子(DendriticFibrousNano-silica,DFNS),特别是具备三维中心辐射状孔道和多级孔结构的球形DFNS拥有较高的比表面积、较大的孔体积、较高的孔渗透性和粒子内表面更易接触性等优点。客体物质(如极小的纳米粒子)能够沿着中心辐射状孔道进行负载和/或输送,甚至与化学改性所得内部活性位点发生反应。因此, DFNS是一种富有前景的载体平台,可以用来构筑新型纳米催化剂、吸附剂、基因/蛋白质/药物的递送系统等。大量研究表明:球形DFNS与生俱来的结构优势使其能够作为MCM-41和SBA-15的理想替代材料。但是,DFNS领域依旧存在很多需要探讨的问题。因此,本文主要归纳分析DFNS的结构特征、常用结构模型、新型结构和实时应用。希望能够给予材料和化学科学家一些参考,促进DFNS的蓬勃发展。Dendritic fibrous nano-silica (DFNS), especially the sphere-shaped with three-dimensional (3D) centerradial channels and hierarchical pores, possess higher specific surface areas, larger pore volumes, higher pore permeability, more accessible internal spaces, etc. Guest substances (e.g., ultrasmall nanoparticles) can be loaded onto and transported in the radial nanochannels, or can even react with the chemically active sites in these nanochannels. As a result, DFNS can serve as promising platforms to construct novel nanocatalysts, adsorbent materials, and delivery systems for genes, proteins or drugs. A majority of investigations about DFNS have demonstrated that silica nanospheres with this special topography have inherent superiorities over traditional mesoporous MCM-41 or SBA-15, and can be perfect alternatives. Nevertheless, reviews on DFNS are limited, and there still exist plenty of issues that need to be probed into. Therefore, this comprehensive review provides a critical survey on DFNS’ structural characteristics, commonly used structural models, novel structures, real-time applications, etc. We sincerely expect that this papercould give material scientists and chemists certain inspiration to accelerate DFNS family’s booming evolution.

关 键 词：树枝状纤维形 二氧化硅 结构模型 新颖结构 实时应用 

分 类 号：O611[理学—无机化学] TB383[理学—化学]