Pressure‐Induced Water Insertion in Synthetic Clays

You, Shujie; Kunz, Daniel A.; Stöter, Matthias; Kalo, Hussein; Putz, Bernd; Breu, Josef; Talyzin, Alexandr V.

doi:10.1002/anie.201210060

Cited by 23 publications

(22 citation statements)

References 24 publications

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“…Osmotic swelling is controlled by the relatively easy flow of solvent in and out of structure regulated by osmotic effects. [29][30][31][32][33] Remarkably, crystalline swelling is found for Brodie GO in all so far studied solvents except water [34][35][36][37][38] while for Hummers GO only osmotic-like swelling was so far reported. [37,39,40] Adding water to clays under conditions of confinement is known to produce pressures in the range of tens or even hundreds of bar.…”

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confidence: 93%

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Swelling Pressures of Graphite Oxide and Graphene Oxide Membranes in Water and Ethanol

Iakunkov

Boulanger

Nordenström

et al. 2021

Adv Materials Inter

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the methods commonly used for the preparation of GO thin films and freestanding foils/membranes.Most of the applications cited above are enabled by the ability of GO multilayers to swell in polar solvents similarly to their precursor graphite oxides. [18][19][20][21][22] In this respect GO is similar to very common clay minerals, e.g., montmorillonites, [23] vermiculites, [24] and bentonites. [25] Swelling occurs in these materials due to sorption of water (or other solvents) between 2D layers and the expansion of interlayered distance. [26][27][28] The driving force of swelling is hydration of anions in clay minerals and hydration of interlayer functional groups in GO. The crystalline swelling refers to layer-by-layer intercalation of solvent. Osmotic swelling is controlled by the relatively easy flow of solvent in and out of structure regulated by osmotic effects. [29][30][31][32][33] Remarkably, crystalline swelling is found for Brodie GO in all so far studied solvents except water [34][35][36][37][38] while for Hummers GO only osmotic-like swelling was so far reported. [37,39,40] Adding water to clays under conditions of confinement is known to produce pressures in the range of tens or even hundreds of bar. [25,41,42] Swelling pressure is complex phenomena, which depends on many parameters, e.g., degree of compaction, [25] concentration of salts in solution, [43] temperature [44] etc. It is an important factor, e.g., in construction works since the pressure is sufficient to induce damage in buildings or roads. Swelling pressure has been studied in detail for clay minerals but so far not reported for multilayered GO and graphite oxides. At the same time, the swelling pressure is an important factor affecting performance of GO membranes.The swelling of GO membranes is directly related to the size of "permeation channels" which enable a flow of solvents and solutions. Strong variation in the size of the "permeation channels" is observed in GO membranes depending on the solvent used, [45] concentration and chemical nature of dissolved molecules or ions, [17] shelf storage time, [40] and many other parameters related to the preparation of membranes. For example, the swelling in liquid ethanol was reported with significant scatter providing d(001) values in the range ≈11-17.7 Å. [10,16,46,47] Swelling in longer alcohols provides interlayer distances up to ≈50 Å. [10,48] There are also examples showing that the swelling of GO membranes can be significantly different compared to precursor graphite oxides. [16,17] Strong variation of interlayer distance in swollen GO membranes is a problem for nanofiltration applications, which require Swelling of graphene oxide (GO) membranes and bulk graphite oxide under confinement conditions is found to produce pressures up to ≈220 bar. Swelling pressure is important to take into account in many applications of GO membranes, but it has not been previously reported. Swelling pressures are typically measured only for bulk materials. However, it is demonstrated that even µm thick GO ...

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confidence: 93%

“…Osmotic swelling is controlled by the relatively easy flow of solvent in and out of structure regulated by osmotic effects. [ 29–33 ] Remarkably, crystalline swelling is found for Brodie GO in all so far studied solvents except water [ 34–38 ] while for Hummers GO only osmotic‐like swelling was so far reported. [ 37,39,40 ]…”

Section: Introductionmentioning

confidence: 99%

Swelling Pressures of Graphite Oxide and Graphene Oxide Membranes in Water and Ethanol

Iakunkov

Boulanger

Nordenström

et al. 2021

Adv Materials Inter

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“…Recent studies of phyllosilicate clays under different pressure conditions reveal that the kaolinite family (Al 2 Si 2 O 5 (OH) 4 , kaolinite, and nacrite), stratified by 1:1 (T-O) layered framework, shows swelling and superhydration of the mono-water layer under water saturated environments at 5.75(1) GPa and 460 (5) • C and, subsequently, transitions to a high-pressure phase (coesite, diaspore, and topaz-OH) under consecutive pressure and temperature conditions [10,11]. A synthetic Na-hectorite (Na 0.3 (Mg) 2 (Si 4 O 10 )(F) 2 -xH 2 O), 2 of 9 2:1 (T-O-T) layered framework, shows anomalous swelling due to pressure-induced hydration at 2.2(1) GPa concomitant with bi-to tri-water layers increment [12].…”

Section: Introductionmentioning

confidence: 99%

“…Materials 2020, 13, x FOR PEER REVIEW 2 of 9 (Na0.3(Mg)2(Si4O10)(F)2-xH2O), 2:1 (T-O-T) layered framework, shows anomalous swelling due to pressure-induced hydration at 2.2(1) GPa concomitant with bi-to tri-water layers increment [12].…”

Section: Introductionmentioning

confidence: 99%

Comparative Compressibility of Smectite Group under Anhydrous and Hydrous Environments

Lee

Kim

et al. 2020

Materials

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High-pressure synchrotron X-ray powder diffraction studies of smectite group minerals (beidellite, montmorillonite, and nontronite) reveal comparative volumetric changes in the presence of different fluids, as pressure transmitting media (PTM) of silicone oil and distilled water for anhydrous and hydrous environments at room temperature. Using silicone oil PTM, all minerals show gradual contraction of unit-cell volumes and atomistic interplane distances. They, however, show abrupt collapse near 1.0 GPa under distilled water conditions due to hydrostatic to quasi-hydrostatic environmental changes of water PTM around samples concomitant with the transition from liquid to ICE-VI and ICE-VII. The degrees of volume contractions of beidellite, montmorillonite, and nontronite up to ca. 3 GPa are ca. 6.6%, 8.9%, and 7.5% with bulk moduli of ca. 38(1) GPa, 31(2) GPa, and 26(1) GPa under silicone oil pressure, whereas 13(1) GPa, 13(2) GPa, and 17(2) GPa, and 17(1) GPa, 20(1) GPa, and 21(1) GPa under hydrostatic and quasi-hydrostatic environments before and after 1.50 GPa, respectively.

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“…However, these materials are three-dimensional structures, whereas little work has been carried out on two-dimensional layered materials. There have been reports of certain graphite oxide intercalation compounds forming under high pressure (Talyzin et al, 2009) and also the pressure-induced uptake of water molecules into the interlayer spacings of clay materials such as Na-hectorite (You et al, 2013). The high-pressure chemistry of a layered pentylamine intercalated lepidocrocite-type titanate, (C 5 H 11 NH 3 ) 0.5 -H 0.3 Ni 0.4 Ti 1.6 O 4 ÁnH 2 O, was studied by Nakano et al (1998) using in-situ high-pressure powder diffraction.…”

Section: Introductionmentioning

confidence: 99%

In-situhigh-pressure powder X-ray diffraction study of α-zirconium phosphate

Readman

Lennie

Hriljac

2014

Acta Crystallogr Sect B

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The high-pressure structural chemistry of α-zirconium phosphate, α-Zr(HPO4)2·H2O, was studied using in-situ high-pressure diffraction and synchrotron radiation. The layered phosphate was studied under both hydrostatic and non-hydrostatic conditions and Rietveld refinement carried out on the resulting diffraction patterns. It was found that under hydrostatic conditions no uptake of additional water molecules from the pressure-transmitting medium occurred, contrary to what had previously been observed with some zeolite materials and a layered titanium phosphate. Under hydrostatic conditions the sample remained crystalline up to 10 GPa, but under non-hydrostatic conditions the sample amorphized between 7.3 and 9.5 GPa. The calculated bulk modulus, K0 = 15.2 GPa, showed the material to be very compressible with the weak linkages in the structure of the type Zr-O-P.

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Pressure‐Induced Water Insertion in Synthetic Clays

Cited by 23 publications

References 24 publications

Swelling Pressures of Graphite Oxide and Graphene Oxide Membranes in Water and Ethanol

Swelling Pressures of Graphite Oxide and Graphene Oxide Membranes in Water and Ethanol

Comparative Compressibility of Smectite Group under Anhydrous and Hydrous Environments

In-situhigh-pressure powder X-ray diffraction study of α-zirconium phosphate

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