SCIENCE CHINA Technological Sciences, Volume 62, Issue 6: 958-964(2019) https://doi.org/10.1007/s11431-018-9389-7

Structural control of silica aerogel fibers for methylene blue removal

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  • ReceivedOct 8, 2018
  • AcceptedNov 5, 2018
  • PublishedFeb 15, 2019


The development of efficient adsorbents is significant for the miniaturization and cost reduction of water purifying facility. In our previous study, a new kind of silica aerogel fibers (SAFs) with hierarchical structure and hollow structure were developed, which shows outstanding mass transport property and adsorption performance. Herein, we further control and study the hierarchical structure and hollow structure of silica aerogel fibers by changing the sulfuric acid concentration of ageing bath and spinning speed. For removing methylene blue, A0W120 SAFs sample, with DI water as ageing bath and a winding speed of 120 mm/s, presents the best mass transport property and adsorption performance, as they possess larger pore sizes in the outer layer, thinner fiber wall and higher degree of hollowness. The removal rates of methylene blue by A0W120 SAFs sample is up to 91.6% and 98.2% in 2 and 5 min, respectively, which are at least 30% higher than other comparable commercial adsorbents, while the adsorption capacity of methylene blue reaches up to 139.1 mg/g.

Funded by

This study was supported by the Shanghai Fundamental Research Projects(Grant,No.,16JC1400701)

the National Natural Science Foundation of China(Grant,No.,51733002)

and the Changjiang Scholars and Innovative Research Team in University(IRT16R13)


This work was supported by the Shanghai Fundamental Research Projects (Grant No. 16JC1400701), the National Natural Science Foundation of China (Grant No. 51733002), and the Changjiang Scholars and Innovative Research Team in University (Grant No. IRT16R13).


Supporting Information

The supporting information is available online at tech.scichina.com and link.springer.com. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.


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