Small Molecule-Assisted Exfoliation of Layered Zirconium Phosphate Nanoplatelets by Ionic Liquids

Xia, Fangqing; Yong, Huaisong; Xiao, Han; Sun, Dazhi

doi:10.1186/s11671-016-1559-6

Cited by 29 publications

(25 citation statements)

References 36 publications

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“…The representative SEM image of α-ZrP is shown in Figure 6 a-b. The nanofiller presented as agglomerate of nanoplates with pseudo-hexagonal shape similarly to found by Xia et al and Yue et al in their articles on intercalation the α-ZrP with ionic liquids and benzoxazine, respectively [35][36] . A representative SEM image of E-A/ZrP is located at Figure 6 d-e. Where it was possible and just to have an idea about the thickness, some nanoplates showed thickness about 200 nm and diameter around 300 nm.…”

Section: Scanning Electron Microscopy (Sem) and X-ray Scattering Specsupporting

confidence: 75%

Investigation on Structural, Morphological and Relaxometric Properties of Lamellar Zrp Modified with Long Chain Amine

Mariano¹,

Freitas²,

Mendes³

et al. 2019

Mat. Res.

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In order to search nanofiller for controlling release of drugs lamellar α-zirconium phosphate (α-ZrP) was modified with ether-amine oligomer (E-A). Synthesis and chemical modification followed specific reaction conditions and different EA:ZrP ratios. Infrared spectra showed strong interaction between P-OH and NH 2 groups. Thermogravimetric curves showed that ether-amine oligomer was incorporated by ZrP. Interlamellar space of α-ZrP increased at least four times indicating intercalation. The relaxometry analysis indicated that α-ZrP molecular mobility changed according to the etheramine amount. The scanning electron microscopy/energy dispersive analysis revealed the presence of octadecylamine inside the α-ZrP galleries. The results showed that P-OH group (Brønsted acid) and amine group (Brønsted base) reacted to each other, resulting in an ionic bond PO-+ 3 HN-[-(CH 2-CH 2-O) m-(CH 2-C-H(CH 3)-O) n-]. Partially intercalated nanofiller were achieved.

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Section: Scanning Electron Microscopy (Sem) and X-ray Scattering Specsupporting

confidence: 75%

Investigation on Structural, Morphological and Relaxometric Properties of Lamellar Zrp Modified with Long Chain Amine

Mariano¹,

Freitas²,

Mendes³

et al. 2019

Mat. Res.

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“…Although bending appears less likely for rigid, inorganic frameworks it is worth noting that Xia et al . presented crumpled exfoliated α -ZrP sheets in TEM images 70 . Nevertheless, the scattering curve ( w = 0.2, Fig.…”

Section: Resultsmentioning

confidence: 99%

Hierarchically Ordered α-Zirconium Phosphate Platelets in Aqueous Phase with Empty Liquid

Lin

Schmelter

Imanian

et al. 2019

Sci Rep

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Platelets of α-zirconium phosphate (α-ZrP) obtained from the reflux method in H3PO4 are successfully exfoliated into water via the intercalation of alkanol amines. With volume fractions greater than 0.02 they are stacked into tactoids of few layers with a repeat distance in the order of 10 nm. The tactoids align into nematic liquid crystalline phases with irregularly wide interstices of empty liquid. Colloidal processing involves the freeze-drying of such anisotropic fluids and the dispersion of the restacked tacoids into aqueous dispersions of colloidal polymer particles of largely varying size which occupy the otherwise empty liquid between the α-ZrP tactoids and induce piling of the tactoids into columns. Real-time SAXS on drying films and TEM of the obtained coatings demonstrate that the stacked α-ZrP platelets and the polymer particles comprising liquid dry separately without polymer intercalation, while the morphology of the obtained composites can be tuned primarily by the size of the polymer colloids. Concomitant α-ZrP hydrolysis in the exfoliation step is scrutinized as a function of amine basicity and temperature. The role of zirconium based hydrolysis products in the hierarchical α-ZrP assembly is indirectly though consistently confirmed by opposing impacts of ultra-filtration and added oxoanions on the platelets’ spacing, smoothness and aggregation. HAADF-TEM imaging of scattered, singular platelets and XRD peak analysis of the pristine solid shed light on the α-ZrP synthesis. Coexisting flakes and lacunae, both similar in size to the intra-layer crystal domains, suggest the stitching of proto-α-ZrP flakes into extended layers in accordance with our observations on the aging behaviour of α-ZrP dispersions as well as with literature data on related systems.

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“…Another method that has been reported for the exfoliation of ZrP is the assisted exfoliation with ionic liquids [ 54 ]. Herein, α-ZrP is first intercalated with small molecules such as DGA.…”

Section: Synthesis and Preparation Of Zrp Nanomaterialsmentioning

confidence: 99%

Preparation of Zirconium Phosphate Nanomaterials and Their Applications as Inorganic Supports for the Oxygen Evolution Reaction

Ramos-Garcés

Colón

2020

Nanomaterials

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Zirconium phosphate (ZrP) nanomaterials have been studied extensively ever since the preparation of the first crystalline form was reported in 1964. ZrP and its derivatives, because of their versatility, have found applications in several fields. Herein, we provide an overview of some advancements made in the preparation of ZrP nanomaterials, including exfoliation and morphology control of the nanoparticles. We also provide an overview of the advancements made with ZrP as an inorganic support for the electrocatalysis of the oxygen evolution reaction (OER). Emphasis is made on how the preparation of the ZrP electrocatalysts affects the activity of the OER.

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Small Molecule-Assisted Exfoliation of Layered Zirconium Phosphate Nanoplatelets by Ionic Liquids

Cited by 29 publications

References 36 publications

Investigation on Structural, Morphological and Relaxometric Properties of Lamellar Zrp Modified with Long Chain Amine

Investigation on Structural, Morphological and Relaxometric Properties of Lamellar Zrp Modified with Long Chain Amine

Hierarchically Ordered α-Zirconium Phosphate Platelets in Aqueous Phase with Empty Liquid

Preparation of Zirconium Phosphate Nanomaterials and Their Applications as Inorganic Supports for the Oxygen Evolution Reaction

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