Hybrid magnetic materials formed by ferritin intercalated into a layered double hydroxide

Clemente‐León, Miguel; Coronado, Eugenio; Primo, V.; Ribera, Antonio; Soriano-Portillo, Alejandra

doi:10.1016/j.solidstatesciences.2008.02.009

Cited by 7 publications

(3 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6,7 Even bio-organic molecules such as ascorbic acid, DNA and ferritin have been intercalated within the metal hydroxide layers. [8][9][10][11] Research focus on LDH has been gradually shifting from the use of different M 2+ and M 3+ ions to the generation of a monometallic LDH system in which the same metal ions are tuned to exist in +2 and +3 oxidation states. Extensive investigations on green rust, containing only iron as a cation in the brucite-type [Fe II -Fe III ] LDH exist in the literature.…”

Section: Introductionmentioning

confidence: 99%

An ethylene glycol intercalated monometallic layered double hydroxide based on iron as an efficient bifunctional catalyst

et al. 2016

View full text Add to dashboard Cite

Given the fact that the literature describing the intercalation of organic molecules in monometallic LDH systems is scarce, the present investigation is aimed at the generation of ethylene glycol intercalated Fe-Fe LDH with the objective of enhancing the surface area for further catalytic applications of industrially important and environmentally harmful organics. The solvothermal reaction of FeCl with urea in an ethylene glycol medium yielded a brown colored powder which was characterized employing a wide range of analytical techniques including high resolution powder X-ray diffraction (PXRD), scanning electron microscopy, thermal analysis, X-ray photo electron spectroscopy (XPS), elemental (C, H, N and S) analysis, UV-visible, photoluminescence spectroscopy measurements, BET surface area and pore-size analysis. The observed reflections in the PXRD pattern were indexed in a rhombohedral symmetry with a = 3.175 and c = 31.9 Å. Combining the results from the Fe 2p core level analysis and anion contents from elemental and thermogravimetric analysis, a formula of Fe Fe (OCH) (OH) was deduced for the sample. The intercalation of EG in the interlayer was confirmed from FTIR and Raman spectroscopy measurements. The d-d transitions of the Fe-ion and the charge transfer transition of the Fe(ii)-Fe(iii) lattice were evident in the UV-visible spectrum. Blue indigoid emission bands arising from the transitions present in the Fe-ion were noticed in the photoluminescence spectrum. The measured BET surface area and pore diameter of the sample were 144 m g and 12.5 nm, respectively. Almost instant decolourisation of the Xylenol Orange (XO) dye occurred in the presence of HO and the LDH sample as catalyst. Similar observations were encountered for Methyl Orange (MO) and Methylene Blue (MB) dyes. All these reactions followed pseudo first-order kinetics. The industrially important reductive conversion of nitro aromatics was catalyzed by the sample. The selective reduction of 2,4-dinitrophenol to 2-amino-4-nitrophenol was effected almost instantaneously by this catalyst. Both the reusability and possible mechanism of catalytic action have been discussed. The EG intercalated Fe-Fe LDH influenced the relaxivity value of protons as determined from NMR spectroscopy experiments.

show abstract

Section: Introductionmentioning

confidence: 99%

An ethylene glycol intercalated monometallic layered double hydroxide based on iron as an efficient bifunctional catalyst

et al. 2016

View full text Add to dashboard Cite

show abstract

“…Layered double hydroxides (LDHs), also known as anionic clays or hydrotalcite‐like compounds (HT), are layered solids with positively charged layers and charge‐balancing anions in the interlayer space. LDHs have recently attracted considerable attention because of their potential applications in many fields 2,3. They are solids with the general formula [ M 1– x II M x III (OH) 2 ] x + [ A n – x / n ] x – · m H 2 O where M II is a divalent cation, M 3+ is a trivalent cation and A n – is an exchangeable anion.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Magnetic Composites: Intercalation of Naproxen into Mg‐Al Layered Double Hydroxides Coated on Fe₃O₄

Rezvani

Sarkarat

2012

Zeitschrift anorg allge chemie

View full text Add to dashboard Cite

In this work the synthesis and characterization of a magnetic composite is described. It was prepared by deposition of Nap‐Mg‐Al‐LDH on Fe3O4 by a coprecipitation method. The structures of the obtained products were studied by powder X‐ray diffraction, FT‐IR spectroscopy, elemental analysis, and thermogravimetric analysis. From the X‐ray diffraction results, it was found that Fe3O4 was successfully distributed into the layered double hydroxide (LDH) phase. Furthermore, the increase in the basal spacing of LDHs from 0.881 nm to 2.157 nm shows that naproxen was successfully intercalated into the interlayer space. The particle size was estimated using transmission electron microscopy. Thermogravimetric studies indicate that the thermal stability of naproxen was enhanced after intercalation. Moreover, in vitro drug release experiments in phosphate buffer solution (pH = 7.4) were investigated.

show abstract

“…This association of peaks is known to be the footprint of proteins amino acids. [181,182] Moreover, the FWMH for the N-H peak was measured at 80 cm −1 in the KBr pellet (Soriano-Portillo et al), [181] whereas in our case it was measured at 20 cm −1 , showing that the ferritins are in a chemically ordered environment (i.e., a monolayer). Other bands at 2926-2962 cm -1 and 3305 cm -1 are assigned to CH2 and −OH binding vibrations, respectively.…”

Section: Monitoring the Adsorption Of Afftn-aa Nanocages On Silicon B...mentioning

confidence: 43%

FERRITIN nanocages used as programmable bricks for biomolecular electronics

Luis

View full text Add to dashboard Cite

Hybrid magnetic materials formed by ferritin intercalated into a layered double hydroxide

Cited by 7 publications

References 44 publications

An ethylene glycol intercalated monometallic layered double hydroxide based on iron as an efficient bifunctional catalyst

An ethylene glycol intercalated monometallic layered double hydroxide based on iron as an efficient bifunctional catalyst

Synthesis and Characterization of Magnetic Composites: Intercalation of Naproxen into Mg‐Al Layered Double Hydroxides Coated on Fe₃O₄

FERRITIN nanocages used as programmable bricks for biomolecular electronics

Contact Info

Product

Resources

About

Hybrid magnetic materials formed by ferritin intercalated into a layered double hydroxide

Cited by 7 publications

References 44 publications

An ethylene glycol intercalated monometallic layered double hydroxide based on iron as an efficient bifunctional catalyst

An ethylene glycol intercalated monometallic layered double hydroxide based on iron as an efficient bifunctional catalyst

Synthesis and Characterization of Magnetic Composites: Intercalation of Naproxen into Mg‐Al Layered Double Hydroxides Coated on Fe3O4

FERRITIN nanocages used as programmable bricks for biomolecular electronics

Contact Info

Product

Resources

About

Synthesis and Characterization of Magnetic Composites: Intercalation of Naproxen into Mg‐Al Layered Double Hydroxides Coated on Fe₃O₄