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Nowadays, multi-shelled mesoporous hollow metal oxide nanospheres have drawn a lot of attention due to their large internal space, nanometer scaled shell thickness, high specific surface area and well-defined mesopores, of which unique nanostructure endows metallic oxides with enhanced properties. In this thesis, we have studied and proposed a versatile ligand-assisted cooperative template method to synthesize multi-shelled mesoporous hollow metal hydroxides and oxides nanospheres, in which silica nanospheres act as sacrificial templates and the coordination interaction between metal ions and surfactant can be cooperatively amplified by using chelating ligand (ascorbic acid) as a co-template. The synthesized metal hydroxides and oxides nanospheres possess stable hollow structure, uniform spherical morphology and tunable diameter from 270 to 690 nm. All the multi-shelled mesoporous hollow metal hydroxide and metal oxide nanospheres exhibit high surface areas (up to 640 m2/g). The obtained Au nanoparticles loaded composited nanospheres exhibit excellent reactivity for solvent-free aerobic oxidation of ethylbenzene with high activity (28.2%) and selectivity (87%).

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Publication history

Received: 26 December 2020
Revised: 21 January 2021
Accepted: 15 February 2021
Published: 27 March 2021
Issue date: September 2021

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© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos. 21671073 and 21621001), the "111" Project of the Ministry of Education of China (No. B17020), and Program for JLU Science and Technology Innovative Research Team.

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Reprints and Permission requests may be sought directly from editorial office.
Email: nanores@tup.tsinghua.edu.cn

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