Intracrystalline structure and release pattern of ferulic acid intercalated into layered double hydroxide through various synthesis routes

Heemin Kang, Hyoung Jun Kim, Jae Hun Yang, Tae Hyun Kim, Goeun Choi, Seung Min Paek, Ae Jin Choi, Jin Ho Choy, Jae Min Oh

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We intercalated ferulic acid (FA) molecules into a layered double hydroxides (LDHs) via three different synthesis routes-ion-exchange, exfoliation-reassembly, and reconstruction-to obtain FA-LDH nanohybrids. All the nanohybrids started from same MgAl-CO3-LDH pristine, with a homogeneous particle size of 80nm, in order to control particle size of final products. According to infrared spectroscopy, all the synthesis routes resulted in successful hybridization between anionic ferulate and positive LDH layers. X-ray diffraction, UV-Vis spectroscopy and thermal analyses showed that the FA molecules were arranged in a zig-zag manner to maximize π-π interactions among them. From scanning electron microscopy, it was revealed that reconstruction gave rise to structural re-organization of LDH layers resulting in a house-of-cards morphology in the nanohybrid, while other methods produced a hexagonal plate-like shape. It seems that FA moieties intercalated by a reconstruction method could be accommodated in the inter-particle cavity as well as the interlayer space in FA-LDH nanohybrids. We investigated time-dependent FA release profiles from each nanohybrid in deionized water and saline. The release patterns and kinetic model fitting results revealed that the release behavior was different each nanohybrid according to the synthesis method and followed Elovich and power function models.

Original languageEnglish
Pages (from-to)32-39
Number of pages8
JournalApplied Clay Science
Volume112-113
DOIs
Publication statusPublished - 2015 Aug 1
Externally publishedYes

Fingerprint

ferulic acid
Hydroxides
hydroxide
acid
Particle size
particle size
Molecules
Deionized water
Ultraviolet spectroscopy
infrared spectroscopy
hydroxide ion
Infrared spectroscopy
ion exchange
Ion exchange
cavity
scanning electron microscopy
spectroscopy
X-ray diffraction

Keywords

  • Ferulic acid
  • Intercalation routes
  • Intracrystalline structure
  • Layered double hydroxide
  • Release

ASJC Scopus subject areas

  • Geology
  • Geochemistry and Petrology

Cite this

Intracrystalline structure and release pattern of ferulic acid intercalated into layered double hydroxide through various synthesis routes. / Kang, Heemin; Kim, Hyoung Jun; Yang, Jae Hun; Kim, Tae Hyun; Choi, Goeun; Paek, Seung Min; Choi, Ae Jin; Choy, Jin Ho; Oh, Jae Min.

In: Applied Clay Science, Vol. 112-113, 01.08.2015, p. 32-39.

Research output: Contribution to journalArticle

Kang, Heemin ; Kim, Hyoung Jun ; Yang, Jae Hun ; Kim, Tae Hyun ; Choi, Goeun ; Paek, Seung Min ; Choi, Ae Jin ; Choy, Jin Ho ; Oh, Jae Min. / Intracrystalline structure and release pattern of ferulic acid intercalated into layered double hydroxide through various synthesis routes. In: Applied Clay Science. 2015 ; Vol. 112-113. pp. 32-39.
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