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Open AccessArticle

Zein-layered hydroxide biohybrids: strategies of synthesis and characterization

Materials Science Institute of Madrid (ICMM), CSIC, c/Sor Juana Inés de la Cruz 3, Cantoblanco, 28049 Madrid, Spain
Authors to whom correspondence should be addressed.
Materials 2020, 13(4), 825;
Received: 30 December 2019 / Revised: 27 January 2020 / Accepted: 31 January 2020 / Published: 11 February 2020
(This article belongs to the Special Issue Layered Double Hydroxides (LDH) and LDH-based hybrid composites)
This work constitutes a basic study about the first exploration on the preparation of biohybrids based on the corn protein zein and layered metal hydroxides, such as layered double hydroxides (LDH) and layered single hydroxides (LSHs). For this purpose, MgAl layered double hydroxide and the Co2(OH)3 layered single hydroxide were selected as hosts, and various synthetic approaches were explored to achieve the formation of the zein-layered hydroxide biohybrids, profiting from the presence of negatively charged groups in zein in basic medium. Zein-based layered hydroxide biohybrids were characterized by diverse physicochemical techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis/differential thermal analysis (TG/DTA), solid state 13C cross-polarization magical angle spinning nuclear magnetic resonance (CP-MAS NMR), field emission-scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), etc., which suggest that the different synthesis procedures employed and the anion located in the interlayer region of the inorganic host material seem to have a strong influence on the final features of the biohybrids, resulting in mixed, single intercalated, or highly exfoliated intercalated phases. Thus, the resulting biohybrids based on zein and layered hydroxides could have interest in applications in biomedicine, biosensing, materials for electronic devices, catalysis, and photocatalysis. View Full-Text
Keywords: zein; layered double hydroxides; layered single hydroxides; intercalation; biohybrids zein; layered double hydroxides; layered single hydroxides; intercalation; biohybrids
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MDPI and ACS Style

Alcântara, A.C.S.; Darder, M.; Aranda, P.; Ruiz-Hitzky, E. Zein-layered hydroxide biohybrids: strategies of synthesis and characterization. Materials 2020, 13, 825.

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