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Hydrophobic monolithic silica with abundant pore as efficient adsorbent for organic contaminants removal

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Abstract

Hydrophobic (water CA, 155° ± 5°) monolithic silica (HMS) material with abundant pore was prepared via sol–gel method by using tetraethoxysilane as silicon source and trimethylchlorosilane as surface modification agent. High specific area and appropriate pores structure of the HMS material supply enough space for storing the absorbed molecules. The maximum adsorptive ability toward organic contaminants can reach 14 times the monolith’s weight. It is worth mentioning that saturated adsorption can be reached in a short time due to the interconnected macropores, which ensure that adsorbate diffuse in the bulk easily. In addition, it was verified that after an easy evaporation condensing treatment, the regenerated HMS material could retain its initial adsorption capacity. High adsorption capacities and good regeneration capability for organic-contaminants removal give the HMS material potential applications in wastewater treatment, chemical accident remediation, and environmental protection.

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Acknowledgements

This research was supported by New Century Excellent Talents in University of Ministry of Education of China (NCET-11-0055).

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Authors and Affiliations

  1. Faculty of Vehicle Engineering and Mechanics, School of Aeronautics and Astronautics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian, 116024, People’s Republic of China

    Tao Sun, Zhi Wang & Zhanjun Wu

  2. School of Physics and Materials Engineering, Dalian Nationalities University, Dalian, 116600, People’s Republic of China

    Hongyu Fan

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  1. Tao Sun
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  2. Hongyu Fan
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  3. Zhi Wang
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  4. Zhanjun Wu
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Correspondence to Zhanjun Wu.

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Sun, T., Fan, H., Wang, Z. et al. Hydrophobic monolithic silica with abundant pore as efficient adsorbent for organic contaminants removal. J Mater Sci 48, 6713–6718 (2013). https://doi.org/10.1007/s10853-013-7472-9

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