Advertisement

Porous monoliths consisting of aluminum oxyhydroxide nanofibrils: 3D structure, chemical composition, and phase transformations in the temperature range 25–1700 °C

  • A. KhodanEmail author
  • T. H. N. Nguyen
  • M. Esaulkov
  • M. R. Kiselev
  • M. Amamra
  • J.-L. Vignes
  • A. Kanaev
Research Paper
  • 100 Downloads

Abstract

We present a study on the chemical and structural transformations in highly porous monolitic materials consisting of the nanofibrils of aluminum oxyhydroxides (NOA, Al2O3·nH2O) in the temperature range 20–1700 °C. A remarkable property of the NOA material is the preservation of the monolithic state during annealing over the entire temperature range, although the density of the monolith increases from ~0.02 up to ~3 g/cm3, the total porosity decreases from 99.3 to 25% and remains open up to 4 h annealing at the temperature ~1300 °C. The physical parameters of NOA monoliths such as density, porosity, specific area were studied and a simple physical model describing these parameters as the function of the average size of NOA fibrils—the basic element of 3D structure—was proposed. The observed thermally induced changes in composition and structure of NOA were successfully described and two mechanisms of mass transport in NOA materials were revealed. (i) At moderate temperatures (T ≤ 800 °C), the mass transport occurs along a surface of amorphous single fibril, which results in a weak decrease of the length-to-diameter aspect ratio from the initial value ~24 till ~20; the corresponding NOA porosity change is also small: from initial ~99.5 to 98.5%. (ii) At high temperatures (T > 800 °C), the mass transport occurs in the volume of fibrils, that results in changes of fibrils shape to elliptical and strong decrease of the aspect ratio down to ≤ 2; the porosity of NOA decreases to 25%. These two regimes are characterized by activation energies of 28 and 61 kJ/mol respectively, and the transition temperature corresponds to the beginning of γ-phase crystallization at 870 °C.

Graphical abstract

Keywords

Nanomaterials Mesoporous materials Aerogel Aluminum oxyhydroxides Alumina 3D nanostructure Phase transitions Structural water Modeling and simulation 

Notes

Acknowledgments

ANR (Agence Nationale de la Recherche) and CGI (Commissariat à l’Investissement d’Avenir) are gratefully acknowledged for their financial support of this work through Labex SEAM (Science and Engineering for Advanced Materials and devices) ANR 11 LABX 086, ANR 11 IDEX 05 02.

Funding

This work was supported by the French-Russian collaboration project DRI CNRS No. EDC26176, and part of this work was carried out with the financial support of the Russian Foundation for Basic Research (Project 17-53-150007 CNRS_a).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

References

  1. Asadchikov VE, Askhadullin RS, Volkov VV, Dmitriev VV, Kitaeva NK, Martynov PN, Osipov AA, Senin AA, Soldatov AA, Chekrygina DI, Yudin AN (2015) Structure and properties of “nematically ordered” aerogels. JETP Lett 101:556–561.  https://doi.org/10.1134/S0021364015080020 CrossRefGoogle Scholar
  2. Askhadullin RS, Martynov PN, Yudintsev PA, Simakov AA, Chaban AY, Matchula EA, Osipov AA (2008) Liquid metal based technology of synthesis of nanostructured materials (by the example of oxides). These materials properties and applications areas. J Phys: Conf Ser 98:1–6.  https://doi.org/10.1088/1742-6596/98/7/072012 Google Scholar
  3. Bouslama M, Amamra MC, Tieng S, Brinza O, Chhor K, Abderrabba M, Vignes JL, Kanaev A (2011) Isolation of titania nanoparticles in monolithic ultraporous alumina: effect of nanoparticle aggregation on anatase phase stability and photocatalytic activity. Appl Catal A 402:156–161CrossRefGoogle Scholar
  4. Bouslama M, Amamra MC, Jia Z, Ben Amar M, Brinza O, Chhor K, Abderrabba M, Vignes JL, Kanaev A (2012) Nanoparticulate TiO2-Al2O3 photocatalytic media: Effect of particle size and polymorphism on photocatalytic activity. ASC Catal 2:1884–1892Google Scholar
  5. Di Costanzo T, Fomkin AA, Frappart C, Khodan AN, Kuznetsov DG, Mazerolles L, Michel D, Minaev AA, Sinitsin VA, Vignes JL (2004) New method of porous oxide synthesis: alumina and alumina based compounds. Mater Sci Forum 453-454:315–322CrossRefGoogle Scholar
  6. Frappart C (2000) Elaboration et caractérisation de monolithes poreux d’alumine obtenus par oxydation d’aluminium. Insertion d’oxydes nanométriques, PhD Dissertation, University Paris 11Google Scholar
  7. Ivensen VA (1995) Use of a mathematical model for pore volume shrinkage over a wide temperature range. Powder Metall Met Ceram 34:528–533.  https://doi.org/10.1007/BF00559962 CrossRefGoogle Scholar
  8. Khatim O, Amamra M, Chhor K, Bell T, Novikov D, Vrel D, Kanaev A (2013) Amorphous-anatase phase transition in single immobilised TiO2 nanoparticles. Chem Phys Let 558:53–56CrossRefGoogle Scholar
  9. Khodan AN, Kopitsa GP, Yorov KE, Baranchikov AE, Ivanov VK, Feoktystov A, Pipich V (2018) Structural analysis of aluminum oxyhydroxide aerogel by small angle X-ray scattering. J SURF INVESTIG-X-RA 12:287–296Google Scholar
  10. McHale JM, Auroux A, Perrotta AJ, Navrotsky A (1997a) Surface energies and thermodynamic phase stability in nanocrystalline aluminas. Science 277:788–791CrossRefGoogle Scholar
  11. McHale JM, Navrotsky A, Perrotta AJ (1997b) Effects of increased surface area and chemisorbed H2O on the relative stability of nanocrystalline γ-Al2O3 and α-Al2O3. J Phys Chem B 101:603–613Google Scholar
  12. Mukhin VI, Khodan AN, Nazarov MM, Shkurinov AP (2012) Study of the properties of nanostructured aluminum oxyhydroxide in the terahertz frequency range. Radiophys Quant Electron 54:591–599CrossRefGoogle Scholar
  13. Navrotsky A (2003) Energetics of nanoparticle oxides: interplay between surface energy and polymorphism. Geochem Trans 4:34–37CrossRefGoogle Scholar
  14. Noordin MR, Liew KY (2010) Synthesis of alumina nanofibers and composites, in: Kumar A (ed.) Nanofibers, InTechGoogle Scholar
  15. Pinnel MR, Bennett JE (1972) Voluminous oxidation of aluminium by continuous dissolution in a wetting mercury film. J Mater Sci 7:1016–1026CrossRefGoogle Scholar
  16. Stepanenko O, Tartari A, Amamra M, Nguyen THN, Piat M, Favero I, Ducci S, Khodan A, Boinovich LB, Emelyanenko AM, Kanaev A, Leo G (2015) Ultra-porous alumina for microwave planar antennas. Adv Device Mater 1:93–99.  https://doi.org/10.1080/20550308.2015.1120442 CrossRefGoogle Scholar
  17. Vignes JL, Mazerolle L, Michel D (1997) A novel method for preparing porous alumina objects. Key Eng Mater 132-136:432–435CrossRefGoogle Scholar
  18. Vignes JL, Frappart C, Di Costanzo T, Rouchaud JC, Mazerolles L, Michel D (2008) Ultraporous monoliths of alumina prepared at room temperature by aluminium oxidation. J Mater Sci 43:1234–1240CrossRefGoogle Scholar
  19. Wislicenus H (1908) Über die faserähnliche gewähsene Tonerde (Fasertonerde) und ihre Oberflächenwirkungen (Adsorption). Zeitschrift für Chemie und Industrie der Kolloide 2:XI-XXGoogle Scholar
  20. Zhang H, Banfield JF (1998) Thermodynamic analysis of phase stability of nanocrystalline titania. J Mater Chem 8:2073–2076CrossRefGoogle Scholar

Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  1. 1.A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS (IPCE RAS)MoscowRussia
  2. 2.Laboratoire des Sciences des Procédés et des Matériaux, CNRSUniversité Paris 13VilletaneuseFrance
  3. 3.Institute on Laser and Informational TechnologiesRussian Academy of SciencesMoscowRussia

Personalised recommendations