X-ray diffraction analysis of layered double hydroxide polymer nanocomposites

Botan, Rodrigo; Sartor, Sabrina de Bona

doi:10.1016/b978-0-08-101903-0.00005-2

Cited by 13 publications

(7 citation statements)

References 40 publications

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“…48-1023 (Zinc Aluminum Carbonate Hydroxide Hydrate) and provide information of the basal spacing d (003) and the inter-cationic distance a, respectively. [19] Structural parameters such as the interplanar distance (d), lattice parameters (a, c, and c'), interlayer thickness, and average crystallite size (D) are summarized in Table S1. No change or no significant shift of peaks was observed upon cobalt incorporation suggesting that the nature of the LDH structure was well maintained.…”

Section: Resultsmentioning

confidence: 99%

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Portillo‐Vélez,

Velásquez‐Torres,

Pérez‐Hernández

et al. 2024

ChemistrySelect

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Two different hydrotalcites Zn/Al and Zn/Al−Co were prepared for the photodegradation of phenol under UV radiation. These materials were synthesized using the co‐precipitation method and characterized through powder X‐ray diffraction (PXRD), UV‐vis spectroscopy, FTIR spectroscopy, X‐ray photoelectron spectroscopy (XPS) and nitrogen physisorption. The physicochemical characterization results indicated that Zn/Al−Co, which incorporates cobalt atoms, did not affect the hydrotalcite structure (layered double hydroxide). However, the specific area was reduced, and the calcination process favoured the creation of surface defects, consequently increasing the adsorption of oxygen species. The calcined Zn/Al−Co(0.3) hydrotalcite exhibited the highest phenol photocatalytic degradation (68 %) and mineralization (52 %) achieved via a mechanism involving superoxide radicals.

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Section: Resultsmentioning

confidence: 99%

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Portillo‐Vélez,

Velásquez‐Torres,

Pérez‐Hernández

et al. 2024

ChemistrySelect

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“…The inter lamellar spacing for MgAl-LDHs depends on the size of the intercalated anion (CO 3 − 2 ) and its reported value in literature is in good agreement to 0.761 nm which varies between 6.5 A° and 8.0 A° for pure LDH [26, [43][44][45]. For LDH-SDS basal spacing, Abd El-Fattah and Abd ElKader had registered 11.32 A° which is almost similar to our nding, above (12.95A°) [46].…”

Section: Ftir and Drx Characterizations Of Ldh And Ldh-sdsmentioning

confidence: 72%

The effect of laboratory synthesized and modified layered double hydroxides on recycled and neat high density polyethylene matrix properties using stearic acid as an interface modifier

DERRADJ,

Zoukrami,

GUERBAA

et al. 2023

Preprint

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In this research, the effect of layered double hydroxides (LDHs) as nanofillers on recycled and neat high density polyethylene (HDPE) properties was investigated. The synthesis of unmodified and modified LDHs was achieved via one-pot hydrothermal co-precipitation method at a constant pH. The nanofillers were organically modified by using sodium dodecyl sulphate (SDS) as surfactant and stearic acid (SA) as an interface modifier in order to overcome the incompatibility problems with HDPE Matrix. The nanocomposites were prepared by melt blending and compression molding with 3 and 5 wt% filler loading rate. Thermal, structural, and morphological tests were conducted to analyze the performance of the LDHs and the compatibilizing agent on the dispersion, and on the properties of the studied composites. Results revealed that 3 wt% of unmodified LDHs filler reinforced all physical and mechanical properties of the obtained nanocomposites based on recycled and neat HDPE matrix. When the weight of LDHs was increased to 5 wt%, morphological observations showed that SA has prevented the aggregation of LDHs particles and improved their dispersion into the recycled HDPE matrix. The physical and mechanical properties of the composite materials were enhanced dramatically with the addition of stearic acid as interface modifier into the recycled polymeric matrix compared to SDS intercalating which improved only the izod impact strength. The formulations of r-HDPE/3%LDH and r-HDPE/5%LDH-1%SA were found to be the ideal combinations which could provide novel mechanical applications to meet industrial requirements at higher scale.

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“…Low-intensity, asymmetric peaks obtained at 2 θ angles above 30° were assigned to the (0 1 l) and (1 1 l) diffraction planes and a cell parameter of a = 3.04 Å was obtained, similar to that previously obtained for Mg–Al LDHs. 26 The intercalation of NSAIDs significantly decreased the 2 θ values of (0 0 l) peaks, resulting in the following interlayer distance values: 21.9 Å for LDH-IB, 22.7 Å for LDH-KP, and 23.7 Å for LDH-KL. These values were similar to those previously obtained for LDHs intercalated with ibuprofen 27–29 and ketoprofen.…”

Section: Resultsmentioning

confidence: 96%

Carboxymethylcellulose/layered double hydroxide dispersions for topical ocular delivery of non-steroidal anti-inflammatory drugs

Mosconi,

Formica,

Palma

et al. 2024

New J. Chem.

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X-ray diffraction analysis of layered double hydroxide polymer nanocomposites

Cited by 13 publications

References 40 publications

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

Boosted Photocatalytic Activity of Zn/Al‐Based Layered Double Hydroxides Through Cobalt Incorporation for Phenol Degradation

The effect of laboratory synthesized and modified layered double hydroxides on recycled and neat high density polyethylene matrix properties using stearic acid as an interface modifier

Carboxymethylcellulose/layered double hydroxide dispersions for topical ocular delivery of non-steroidal anti-inflammatory drugs

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