Localization of hydrogen in the layer oxide HTiNbO5

Rebbah, H.; Pannetier, J.; Raveau, B.

doi:10.1016/0022-4596(82)90034-2

Cited by 39 publications

(23 citation statements)

References 10 publications

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“…So far, diverse layered metal oxides, e.g., Cs 0.7 Ti 1.825 O 4 ,8 KCa 2 Nb 3 O 10 ,7, 29 K 0.45 MnO 2 ,30, 31 K 4 Nb 6 O 17 ,32 RbTaO 3 ,33 KTiNbO 5 ,5, 9a, 34 and Cs 6+ x W 11 O 36 ,35 have been delaminated into their elemental layers, i.e., nanosheets, as shown in Figure . The host compounds as precursors are all constituted of stacked negatively charged slabs, corner‐ and/or edge‐shared MO 6 (M = Ti, Nb, Mn, Ta, W) octahedral units, and alkali metal cations (K + , Rb + , Cs + ) occupying the interlayer space.…”

Section: Synthesis Of Nanosheetsmentioning

confidence: 99%

“…The swelling decreases the electrostatic interaction between the host layers and the cationic interlayer species, permitting final exfoliation with the aid of a weak shear force applied by mechanical shaking. In this manner, negatively charged nanosheets, Ti 0.91 O 2 0.36− ,8 Ca 2 Nb 3 O 10 − ,7, 29 MnO 2 0.4− ,30, 31 Nb 6 O 17 4− ,32 TaO 3 − ,33 TiNbO 5 − ,5, 9a, 34 and Cs 4 W 11 O 36 2− ,35 are readily derived from the corresponding protonic form in TBA + OH − (C 4 H 9 ) 4 N + OH − ) solutions at suitable concentrations.…”

Section: Synthesis Of Nanosheetsmentioning

confidence: 99%

“…The history of nanosheets, or exfoliated sheets, dates as far back as the 1950s, when smectite‐type clay minerals were reported to disperse well in water and yield a colloidal suspension as a consequence of spontaneous exfoliation or delamination 1, 2. Since the 1970s, exfoliation of a wide range of inorganic layered compounds, including metal chalcogenides,3 metal phosphates, and phosphonates,4 as well as layered metal oxides,5–9 has been achieved through an appropriate combination of interlayer cations and solvents. Unlike smectite clays with a very weak interlayer interaction due to a low layer charge density, these layered compounds have a higher layer charge density and require chemical modifications or interlayer composition changes to artificially promote the exfoliation process assisted by a weak shear force.…”

Section: Introductionmentioning

confidence: 99%

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Nanosheets of Oxides and Hydroxides: Ultimate 2D Charge‐Bearing Functional Crystallites

2010

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A wide variety of cation-exchangeable layered transition metal oxides and their relatively rare counterparts, anion-exchangeable layered hydroxides, have been exfoliated into individual host layers, i.e., nanosheets. Exfoliation is generally achieved via a high degree of swelling, typically driven either by intercalation of bulky organic ions (quaternary ammonium cations, propylammonium cations, etc.) for the layered oxides or by solvation with organic solvents (formamide, butanol, etc.) for the hydroxides. Ultimate two-dimensional (2D) anisotropy for the nanosheets, with thickness of around one nanometer versus lateral size ranging from submicrometer to several tens of micrometers, allows them to serve either as an ideal quantum system for fundamental study or as a basic building block for functional assembly. The charge-bearing inorganic macromolecule-like nanosheets can be assembled or organized through various solution-based processing techniques (e.g., flocculation, electrostatic sequential deposition, or the Langmuir-Blodgett method) to produce a range of nanocomposites, multilayer nanofilms, and core-shell nanoarchitectures, which have great potential for electronic, magnetic, optical, photochemical, and catalytic applications.

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Section: Synthesis Of Nanosheetsmentioning

confidence: 99%

Section: Synthesis Of Nanosheetsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Nanosheets of Oxides and Hydroxides: Ultimate 2D Charge‐Bearing Functional Crystallites

2010

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“…1b) present a single peak corresponding to the 002 reflection as calculated from the orthorhombic lattice parameter and the space group Pnma (a ¼ 6.53 Å , b ¼ 3.78 Å , c ¼ 16.68 Å ) according to Ref. [26]. Indeed in that case, reflections: 0kl with k þ l s 2n; hk0 with h s 2n; h00, 0k0, 00l with h, k, and l s 2n are systematically absent and therefore no 001 peak can be observed.…”

Section: Intercalation Of Htinbo 5 By N-alkyl Aminesmentioning

confidence: 99%

Polyethylene nanocomposites based on intercalation of N-alkyl amines within KTiNbO5 structure

Chausson¹,

Caignaert²,

Retoux³

et al. 2008

Polymer

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“…A full three-dimensional structure refinement was performed using the Rietveld profile refinement technique (Rietveld, 1969;Hewat, 1980) which has already been used successfully to locate the hydrogen atoms in dickite (Adams and Hewat, 1981) and other layered materials, e.g., HTiNbO5 (Rebbah et al, 1982).…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Atom Positions in Kaolinite by Neutron Profile Refinement

Adams

1983

Clays and clay miner.

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Abstract--A structure refinement of kaolinite made using the Rietveld neutron profile refinement technique has given non-hydrogen atom positions which were not significantly different from those given by B. B. Zvyagin in i960. All of the hydrogen atoms have been located; the three inner-surface hydrogen atoms are involved in interlayer hydrogen bonds with lengths of 2.95(4), 2.95(4), and 3.06(4) ]k with O-H ... O angles of 168(4) ~ 144(4) ~ and 146(4) ~ respectively. The inner hydrogen atom is located in a position consistent with that found earlier in dickite and muscovite which are the only dioctahedral layer silicates studied by neutron diffraction to date. The O-H vector makes an angle of 34 ~ with the (001) plane, away from the octahedral sheet, and the projection of the vector on to (001) is at ~30 ~ to the b axis.

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Localization of hydrogen in the layer oxide HTiNbO5

Cited by 39 publications

References 10 publications

Nanosheets of Oxides and Hydroxides: Ultimate 2D Charge‐Bearing Functional Crystallites

Nanosheets of Oxides and Hydroxides: Ultimate 2D Charge‐Bearing Functional Crystallites

Polyethylene nanocomposites based on intercalation of N-alkyl amines within KTiNbO5 structure

Hydrogen Atom Positions in Kaolinite by Neutron Profile Refinement

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