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In situ Formed Fan-Shaped Nanowires in Biomorphic SiO2: A Multidimensional Composite of Hierarchical Porous Material and Organic Pollutant Adsorption Behavior

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

Fan-shaped SiO2 nanowires modified SiO2@C composites with a bio-inspired hierarchical porous structure and a high accessible surface area were prepared by in situ molten salt template method. The combination of biogenic hierarchical porous structure and one-dimensional nanostructure with similar features was successfully obtained by one-pot heat treatment in the presence of rice husk SiO2 with SiO2 acting as precursor and ZnCl2 acting as molten salt and growth template. A large amount of fan-shaped SiO2 nanowires with numerous tiny branches sprouting from the central nanowires were grown in the inter-porous epidermis and on the surface of rice husk SiO2 for temperatures up to 1200 °C. The in situ ZnCl2 molten salt template base-growth mechanism is responsible for the initial formation of SiO2/ZnCl2 co-melting nanowires and the subsequent growth of fan-shaped SiO2 nanowires. The as-prepared samples have been successfully employed as organic absorbers with high efficiency in the field of wastewater treatment.

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Acknowledgements

This work was financially supported by the Key Technology R and D Program of Hubei Province (No. 2015BCA253) and the China Postdoctoral Science Foundation (No. 2015M572210) and the Open Foundation of The State Key Laboratory of Refractories and Metallurgy (No. 2014QN17).

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Authors and Affiliations

  1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, China

    Hui Chen, Lei Zhao, Xuan He, Xi-Tang Wang, Wei Fang & Xing Du

  2. HuBei Province Key Laboratory of Coal Conversion and New Carbon Materials, College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan, 430081, China

    Hui Chen & Guang-Hui Wang

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  1. Hui Chen
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  2. Lei Zhao
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  3. Xuan He
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Correspondence to Lei Zhao.

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Chen, H., Zhao, L., He, X. et al. In situ Formed Fan-Shaped Nanowires in Biomorphic SiO2: A Multidimensional Composite of Hierarchical Porous Material and Organic Pollutant Adsorption Behavior. Acta Metall. Sin. (Engl. Lett.) 30, 104–112 (2017). https://doi.org/10.1007/s40195-016-0525-8

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  • DOI: https://doi.org/10.1007/s40195-016-0525-8

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