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Synthesis of Double-Shelled Hollow Inorganic Nanospheres through Block Copolymer-Metal Coordination and Atomic Layer Deposition

文献类型： 外文期刊

作者： Yan, Nina 1 ; Guan, Qingbao 3 ; Yang, Zhiming 4 ; Feng, Min 1 ; Jiang, Xizhi 1 ; Liu, Jun 1 ; Xu, Lei 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Jiangsu, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Protected Agr Engn Middle & Lower Reaches, Nanjing 210014, Jiangsu, Peoples R China

3.Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Int Joint Lab Adv Fiber & Low Dimens Mat, Shanghai 201620, Peoples R China

4.Jiangsu Bigold New Mat Stock Co Ltd, Zhenjiang 212400, Jiangsu, Peoples R China

关键词： block copolymers; self-assembly; metal-ligand coordination; atomic layer deposition; double-shelled hollow structures

期刊名称：POLYMERS （ 影响因子：4.329； 五年影响因子：4.493 ）

ISSN：

年卷期： 2019 年 11 卷 7 期

页码：

收录情况： SCI

摘要： Double-shelled hollow (DSH) structures with varied inorganic compositions are confirmed to have improved performances in diverse applications, especially in lithium ion battery. However, it is still of great challenge to obtain these complex nanostructures with traditional hard templates and solution-based route. Here we report an innovative pathway for the preparation of the DSH nanospheres based on block copolymer self-assembly, metal-ligand coordination and atomic layer deposition. Polymeric composite micelles derived from amphiphilic block copolymers and ferric ions were prepared with heating-enabled micellization and metal-ligand coordination. The DSH nanospheres with Fe2O3 stands inner and TiO2 outer the structures can be obtained with atomic layer deposition of a thin layer of TiO2 followed with calcination in air. The coordination was carried out at room temperature and the deposition was performed at the low temperature of 80 degrees C, thus providing a feasible fabrication strategy for DSH structures without destruction of the templates. The cavity and the outer layer of the structures can also be simply tuned with the utilized block copolymers and the deposition cycles. These DSH inorganic nanospheres are expected to find vital applications in battery, catalysis, sensing and drug delivery, etc.

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