Journal
NANO RESEARCH
Volume 8, Issue 8, Pages 2503-2514Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-015-0758-2
Keywords
mesoporous materials; core-shell structures; aluminosilicates; magnetic property; surface acid
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Funding
- State Key Laboratory of Pollution Control and Resource Reuse Foundation [PCRRF14017]
- National Natural Science Foundation of China [21210004]
- China Postdoctoral Science Foundation [2014M551455]
- Commonwealth of Australia through the Automotive Australia Cooperative Research Centre (Auto CRC)
- Commonwealth of Australia [DP120101194]
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The rational design and precise synthesis of multifunctional hybrid nanostructures with a tailored active core and a large, dendritic, modified mesoporous structured shell can promote catalysis, energy storage, and biological applications. Here, an oil-water biphase stratification coating strategy has been developed to prepare monodisperse magnetic dendritic mesoporous silica core-shell structured nanospheres. These sophisticated Fe3O4@SiO2@dendritic-mSiO(2) nanospheres feature large dendritic open pores (2.7 and 10.3 nm). Significantly, the silica shells can be converted into dendritic mesoporous aluminosilicate frameworks with unchanged porosity, a Si/Al molar ratio of 14, and remarkably strong acidic sites, through a post-synthesis approach. In addition, the resultant magnetic dendritic mesoporous aluminosilicate nanospheres exhibit outstanding properties and promising application in phosphate removal from wastewater.
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