A mechanism for the sphere/tube shape transition of nanoparticles with an imogolite local structure (imogolite and allophane)
Source abstract
Abstract
Imogolite and allophane are two strongly curved nanominerals. Indeed, imogolite has a tubular shape with a diameter of only 2.5 nm. Allophane is often presented as a spherical nanostructure with a diameter of about 5 nm. The mechanism explaining the strong curvature of these two nanominerals has been extensively discussed. However , whether or not these two nanomaterials are related to each other is not clear and the mechanism responsible for the selection between the two different shapes is not well established. In this article, we propose that imogolite and allophane are nanopolymorphs of the imogolite local structure and that the transition from spherical to tubular shape occurs at an early stage of the precipitation because of edge stress in proto-imogolite. This hypothesis for the shape selection is supported by the use of a nanomechanical model tuned to mimic the main characteristics of imogolite-like nanomaterials.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Grouting, Rheology, and Soil Mechanics · Soil and Unsaturated Flow · Rock Mechanics and Modeling
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
Show source-provided references
1. Differential formation of allophane and imogolite: experimental and molecular orbital study10.1007/s10820-006-9022-0 ↗
2. Ab initio simulation of the structural and electronic properties of aluminosilicate and aluminogermanate natotubes with imogolite-like structure10.1103/PhysRevB.76.125421 ↗
3. Hybrid, tunable-diameter, metal oxide nanotubes for trapping of organic molecules10.1021/cm503428q ↗
4. Single-walled hollow nanospheres assembled from the aluminogermanate precursors10.1039/b908997g ↗
5. Why a 1:1 2D structure tends to roll? A thermodynamic perspective
6. Synthesis and characterization of hybrid organic/inorganic nanotubes of the imogolite type and their behaviour towards methane adsorption10.1039/C0CP00438C ↗
7. Imogolite, a hydrated aluminium silicate of tubular structure10.1038/physci240187a0 ↗
8. Molecular dynamics study of hydrated imogolite. 1. Vibrational dynamics of the nanotube10.1021/jp800802u ↗
9. Molecular models of hydroxide, oxyhydroxide, and clay phases and the development of a general force field10.1021/jp0363287 ↗
10. Structure and energetics of imogolite: a quantum mechanical ab initio study with B3LYP hybrid functional10.1039/c0jm00771d ↗
11. Denaix · 1999 · vol. 158 · 315
12. The reaction of aluminium with silicic acid in acidic solution: an important mechanism in controlling the biological availability of aluminium?10.1016/S0010-8545(02)00077-2 ↗
13. Synthesis of imogolite: a tubular aluminium silicate polymer10.1039/c39770000462 ↗
14. Broad family of carbon nanoallotropes: classification, chemistry, and applications of fullerenes, carbon dots, nanotubes, graphene, nanodiamonds, and combined superstructures10.1021/cr500304f ↗
15. Model for self-rolling of an aluminosilicate sheet into a single-walled imogolite nanotube10.1021/jp508637q ↗
16. Imogolite nanotubes: stability, electronic, and mechanical properties10.1021/nn700184k ↗
17. Morphology and composition of allophane
18. On the synthesis of colloidal imogolite fibers10.1006/jcis.1999.6323 ↗
19. Strain energy minimum and vibrational properties of single-walled aluminosilicate nanotubes10.1103/PhysRevB.74.033401 ↗
20. Origin of the strain energy minimum in imogolite nanotubes10.1021/jp108629z ↗
21. Formation and growth mechanisms of imogolite-like aluminogermanate nanotubes10.1021/cm902883p ↗
22. The electronic structure of a single-walled aluminosilicate nanotube10.1088/0957-4484/19/17/175702 ↗
23. Growth kinetic of single and double-walled aluminogermanate imogolite-like nanotubes: an experimental and modeling approach10.1039/C0CP01851A ↗
24. Phenomenology of the growth of single-walled aluminosilicate and aluminogermanate nanotubes of precise dimensions10.1021/cm0505852 ↗
25. Fast parallel algorithms for short-range molecular dynamics10.1006/jcph.1995.1039 ↗
26. Imogolite: a unique aluminosilicate10.1180/claymin.1969.008.1.09 ↗
27. MOMAC: a SAXS/WAXS laboratory instrument dedicated to nanomaterials10.1107/S1600576716012127 ↗
28. Molecular dynamics modeling of tubular aluminum silicate: imogolite10.1021/jp0124793 ↗
29. How the diameter and structure of (OH) 3 Al 2 O 3 Si x Ge 1–x OH imogolite nanotubes are controlled by an adhesion versus curvature competition10.1021/jp310547k ↗
30. Imogolite synthesis at 25 degree C10.1346/CCMN.1987.0350508 ↗
31. Effects of substitution of germanium for silicon in imogolite10.1346/CCMN.1982.0300206 ↗
32. Defect structures in aluminosilicate single-walled nanotubes: a solid-state nuclear magnetic resonance investigation10.1021/jp3059728 ↗
33. A generalized kinetic model for the formation and growth of single-walled metal oxide nanotubes10.1016/j.ces.2012.12.025 ↗
34. Energetic minimum structures of imogolite nanotubes: a first-principles prediction10.1021/jp9056169 ↗