Abstract
A simple and facile synthetic methodology for fabricating the regenerated silk fibroin (RSF)-based hydrogel which consisted of the in situ generated magnetic ferriferous oxide (Fe3O4) was developed. Using the co-precipitation of Fe2+ and Fe3+ within the RSF-based hydrogel with 90% RSF and 10% HPMC (hydroxypropyl methyl cellulose), the as-prepared RSF/Fe3O4 hydrogel not only showed high strength of saturation magnetization, but also exhibited excellent catalytic activities. For example, with the assistant of 3,3′,5,5′-tetramethylbenzidine (TMB), the RSF/Fe3O4 hydrogel could detect H2O2 at a concentration as low as 1 × 10−6 mol∙L−1. In addition, the catalytic activities were able to be maintained for a long term under various conditions. These findings suggest that the RSF-based materials can be endowed with interesting properties, and have great potential for the applications in the fields of biotechnology and environmental chemistry.
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The authors thank Prof. Xin Chen and Dr. Jinrong Yao at Fudan University for their valuable discussions.
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This work was financially supported by the National Natural Science Foundation of China (No. 21574024).
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Luo, Ky., Shao, Zz. A novel regenerated silk fibroin-based hydrogels with magnetic and catalytic activities. Chin J Polym Sci 35, 515–523 (2017). https://doi.org/10.1007/s10118-017-1910-0
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DOI: https://doi.org/10.1007/s10118-017-1910-0