Direct Assembly of Mesoporous Silica Functionalized with Polypeptides for Efficient Dye Adsorption |
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| Authors: | Yi‐Syuan Lu Dr Bishnu Prasad Bastakoti Dr Malay Pramanik Dr Victor Malgras Prof Yusuke Yamauchi Prof Shiao‐Wei Kuo |
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| Institution: | 1. Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung, Taiwan;2. World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, Japan;3. http://www.yamauchi‐labo.com;4. http://smr.nsysu.edu.tw:10080/ |
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| Abstract: | Herein, we introduce a new polypeptide‐functionalized mesoporous silica template fabricated from a biodegradable poly(ethylene oxide‐b‐?‐caprolactone) (PEO‐b‐PCL) diblock copolymer and a poly(tyrosine) (PTyr) biopolymer. The crystallization behavior of the PEO‐b‐PCL diblock copolymer changes after blending, but the secondary structure of PTry remains stable. After selective solvent extraction in THF, the PEO‐b‐PCL is removed, but PTyr remains within the silica matrix due to its different solubility. Fourier‐transform IR spectroscopic analysis (FTIR), thermal gravitometry analysis (TGA), small‐angle X‐ray scattering (SAXS), and X‐ray diffraction (XRD) studies confirm the retention of PTyr to form a polypeptide‐functionalized mesoporous material. The adsorption of methylene blue hydrate (MB) from aqueous solution into the polypeptide‐functionalized mesoporous silica is investigated, thus revealing that the nanocomposite exhibits a high adsorption capacity relative to pure silica due to hydrogen‐bonding interactions between the hydroxy phenolic group of PTyr and the N‐containing aromatic ring from MB. |
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| Keywords: | mesoporous materials silica organic– inorganic hybrid composites polypeptides |
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