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Influence of Molar Ratio of Zn/Al/Tyr on the Formation of Tyr/Zn‐Al‐LDH Nanohybrids
Author(s) -
li ShuPing,
Xu JingJuan,
Zhao Ge,
Chen HongYuan
Publication year - 2005
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200591343
Subject(s) - chemistry , intercalation (chemistry) , biomolecule , fourier transform infrared spectroscopy , monolayer , crystallography , infrared spectroscopy , chemical engineering , inorganic chemistry , nuclear chemistry , organic chemistry , biochemistry , engineering
The intercalation of amphoteric amino acid tyrosine (Tyr) into LDH by co‐precipitation method was systematically studied. The influence of initial molar ratios ( R ) of LDH to Tyr has also been examined. Powder X‐ray diffraction, Fourier transform infrared spectroscopy, specific surface areas and pore size distributions, and thermal analysis have been employed for the characterization of the nanocomposites. The nanohybrids were found to have an expanded layered structure except the samples prepared with low R values, indicating that the biomolecules were intercalated into the gallery as anions. The intercalation of amino acids resulted in the increase of the surface areas and pore volumes, and the value of surface areas and pore volumes increased with enhancement of biomolecules intercalated. TEM analysis revealed that with increasing biomolecules into the gallery, the nanohybrids were changed from hexagonal particles to spherical ones. Moreover, the configuration of Tyr anions was varied under different R values, changed from monolayer to bilayers with more biomolecules intercalating into the gallery.