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Direct Assembly of Mesoporous Silica Functionalized With Polypeptides for Efficient Dye Adsorption

Direct Assembly of Mesoporous Silica Functionalized With Polypeptides for Efficient Dye Adsorption

Yi-Syuan Lu, Bishnu Prasad Bastakoti, Malay Pramanik, Victor Malgras, Yusuke Yamauchi, Shiao-Wei Kuo

Chemistry. 2016 Jan 18;22(3):1159-64.

PMID: 26626026

Abstract:

Herein, we introduce a new polypeptide-functionalized mesoporous silica template fabricated from a biodegradable poly(ethylene oxide-b-ɛ-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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP122965439	Methylene Blue hydrate		122965-43-9	Price

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