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Preparation and properties of monolithic and hydrophobic gelatin–silica composite aerogels for oil absorption

  • Original Paper: Sol-gel and hybrid materials with surface modification for applications
  • Published:
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Abstract

In this study, highly porous and low density silica–gelatin composite aerogels with excellent absorption capacity were obtained. The preparation process was as follows: firstly, the gel with stable network structure was formed by sol–gel method; secondly, after soaking the gel with hexamethyldisilazane solution, the aerogel was prepared by freeze-drying; finally, the aerogel was coated with hexamethyldisilazane via chemical vapor deposition. The composite aerogels with 30% gelatin showed optimal performance in practical applications: lowest bulk density (0.068 g/cm3), highest porosity (96%), largest pore volume (1.24 cm3/g), and maximum oil/organic solvents absorption capacity (12–27 g/g). The excellent oil/solvent absorption capacity and recyclability indicated that the hydrophobic gelatin–silica composite aerogels could be a promising candidate for oil absorption.

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Acknowledgements

The authors acknowledged the financial support of Science and Technology Foundation of Tianjin (Grants No. 14JCTPJC00505).

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Authors and Affiliations

  1. Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300350, China

    Li Yun, Jin Zhao, Xiaoling Kang, Yang Du, Xubo Yuan & Xin Hou

  2. School of Materials Science and Engineering, Tianjin University, Tianjin, 300350, China

    Li Yun, Jin Zhao, Xiaoling Kang, Yang Du, Xubo Yuan & Xin Hou

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  1. Li Yun
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  2. Jin Zhao
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  3. Xiaoling Kang
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  4. Yang Du
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  5. Xubo Yuan
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  6. Xin Hou
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Correspondence to Jin Zhao or Xin Hou.

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Yun, L., Zhao, J., Kang, X. et al. Preparation and properties of monolithic and hydrophobic gelatin–silica composite aerogels for oil absorption. J Sol-Gel Sci Technol 83, 197–206 (2017). https://doi.org/10.1007/s10971-017-4378-z

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  • DOI: https://doi.org/10.1007/s10971-017-4378-z

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