Preparation and characterization of hybrid organic-inorganic composite materials using the amphoteric property of amino acids

Amino acid intercalated layered double hydroxide and montmorillonite

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119 Citations (Scopus)

Abstract

Deprotonated and protonated forms of L-tyrosine or L-phenylalanine were intercalated by Zn-Al hydrotalcite (HT) and Na-montmorillonite (Na-mont), respectively. The intercalated materials were characterized by powder X-ray diffraction, BET measurements, and FT-IR spectroscopy. Intercalation was successful as the increased basal spacings attested. For hydrotalcite this increase was always significantly larger than for montmorillonite. This fact indicated that the spatial arrangement of the amino acid moieties was very different. A model for this arrangement has been suggested. A variety of methods showed that L-Tyr(Phe)-HT was thermally less stable than HT, while the heat resistance of L-Tyr(Phe)-mont did not change.

Original languageEnglish
Pages (from-to)4653-4658
Number of pages6
JournalInorganic Chemistry
Volume38
Issue number21
Publication statusPublished - 1999

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hydrotalcite
Bentonite
montmorillonite
hydroxides
amino acids
Amino Acids
preparation
composite materials
phenylalanine
tyrosine
Composite materials
thermal resistance
intercalation
spacing
Intercalation
Phenylalanine
diffraction
Heat resistance
X ray powder diffraction
spectroscopy

ASJC Scopus subject areas

  • Inorganic Chemistry

Cite this

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title = "Preparation and characterization of hybrid organic-inorganic composite materials using the amphoteric property of amino acids: Amino acid intercalated layered double hydroxide and montmorillonite",
abstract = "Deprotonated and protonated forms of L-tyrosine or L-phenylalanine were intercalated by Zn-Al hydrotalcite (HT) and Na-montmorillonite (Na-mont), respectively. The intercalated materials were characterized by powder X-ray diffraction, BET measurements, and FT-IR spectroscopy. Intercalation was successful as the increased basal spacings attested. For hydrotalcite this increase was always significantly larger than for montmorillonite. This fact indicated that the spatial arrangement of the amino acid moieties was very different. A model for this arrangement has been suggested. A variety of methods showed that L-Tyr(Phe)-HT was thermally less stable than HT, while the heat resistance of L-Tyr(Phe)-mont did not change.",
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T1 - Preparation and characterization of hybrid organic-inorganic composite materials using the amphoteric property of amino acids

T2 - Amino acid intercalated layered double hydroxide and montmorillonite

AU - Pálinkó, I.

PY - 1999

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N2 - Deprotonated and protonated forms of L-tyrosine or L-phenylalanine were intercalated by Zn-Al hydrotalcite (HT) and Na-montmorillonite (Na-mont), respectively. The intercalated materials were characterized by powder X-ray diffraction, BET measurements, and FT-IR spectroscopy. Intercalation was successful as the increased basal spacings attested. For hydrotalcite this increase was always significantly larger than for montmorillonite. This fact indicated that the spatial arrangement of the amino acid moieties was very different. A model for this arrangement has been suggested. A variety of methods showed that L-Tyr(Phe)-HT was thermally less stable than HT, while the heat resistance of L-Tyr(Phe)-mont did not change.

AB - Deprotonated and protonated forms of L-tyrosine or L-phenylalanine were intercalated by Zn-Al hydrotalcite (HT) and Na-montmorillonite (Na-mont), respectively. The intercalated materials were characterized by powder X-ray diffraction, BET measurements, and FT-IR spectroscopy. Intercalation was successful as the increased basal spacings attested. For hydrotalcite this increase was always significantly larger than for montmorillonite. This fact indicated that the spatial arrangement of the amino acid moieties was very different. A model for this arrangement has been suggested. A variety of methods showed that L-Tyr(Phe)-HT was thermally less stable than HT, while the heat resistance of L-Tyr(Phe)-mont did not change.

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