Morphology-Controlled Synthesis of Nanocrystalline η-Al2O3 Thin Films, Powders, Microbeads, and Nanofibers with Tunable Pore Sizes from Preformed Oligomeric Oxo-Hydroxo Building Blocks
作者： Jan Haetge , Bernd M. Smarsly , Torsten Brezesinski , Christoph Weidmann , Kirstin Brezesinski
DOI: 10.1021/CM202692Q
关键词: X-ray photoelectron spectroscopy 、 Nanotechnology 、 Thin film 、 Chemical engineering 、 Materials science 、 Mesoporous material 、 Nanocrystalline material 、 Polymer 、 Physisorption 、 Electrospinning 、 Nanofiber
摘要: Herein the synthesis and characterization of nanocrystalline η-Al2O3 materials with different morphologies, including dense nanofibers, hierarchically porous microbeads, highly ordered mesoporous thin films powders is reported. These were fabricated by facile polymer templating, nanocasting, electrospinning routes using preformed aluminum-oxo-hydroxo species as building blocks. We show that oligomeric blocks used in this work can be formed under nonaqueous conditions benzyl alcohol oxygen donor further converted to eta-phase Al2O3 at temperatures above 700 °C. Electron microscopy, X-ray diffraction, grazing incidence small-angle scattering, photoelectron spectroscopy, physisorption studies collectively verify are well-defined nanoscale microscale after annealing air high 1000 In addition, data obtained on polymer-templated both ...
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sci-hub.se 参考文章(57)
Marcella Trombetta, Guido Busca, Stefano Rossini, Valerio Piccoli, Ugo Cornaro, Alberto Guercio, Roberto Catani, Ronald J. Willey, FT-IR Studies on Light Olefin Skeletal Isomerization Catalysis: III. Surface Acidity and Activity of Amorphous and Crystalline Catalysts Belonging to the SiO2–Al2O3System Journal of Catalysis. ,vol. 179, pp. 581- 596 ,(1998) , 10.1006/JCAT.1998.2251
Timothy J. Trentler, Tiffany E. Denler, Jane F. Bertone, Aarti Agrawal, Vicki L. Colvin, Synthesis of TiO2 Nanocrystals by Nonhydrolytic Solution-Based Reactions Journal of the American Chemical Society. ,vol. 121, pp. 1613- 1614 ,(1999) , 10.1021/JA983361B
Yude Wang, Torsten Brezesinski, Markus Antonietti, Bernd Smarsly, Ordered Mesoporous Sb-, Nb-, and Ta-Doped SnO2 Thin Films with Adjustable Doping Levels and High Electrical Conductivity ACS Nano. ,vol. 3, pp. 1373- 1378 ,(2009) , 10.1021/NN900108X
D MACIVER, Catalytic aluminas: II. Catalytic properties of eta and gamma alumina Journal of Catalysis. ,vol. 3, pp. 502- 511 ,(1964) , 10.1016/0021-9517(64)90050-8
Daibin Kuang, Torsten Brezesinski, Bernd Smarsly, Hierarchical Porous Silica Materials with a Trimodal Pore System Using Surfactant Templates Journal of the American Chemical Society. ,vol. 126, pp. 10534- 10535 ,(2004) , 10.1021/JA0470618
Sivarajan Ramesh, Elena Sominska, Baruch Cina, Rachman Chaim, Aharon Gedanken, Nanocrystalline γ‐Alumina Synthesized by Sonohydrolysis of Alkoxide Precursor in the Presence of Organic Acids: Structure and Morphological Properties Journal of the American Ceramic Society. ,vol. 83, pp. 89- 94 ,(2000) , 10.1111/J.1151-2916.2000.TB01153.X
C. Jeffrey Brinker, Yunfeng Lu, Alan Sellinger, Hongyou Fan, Evaporation-Induced Self-Assembly: Nanostructures Made Easy** Advanced Materials. ,vol. 11, pp. 579- 585 ,(1999) , 10.1002/(SICI)1521-4095(199905)11:7<579::AID-ADMA579>3.0.CO;2-R
William H. Casey, Large aqueous aluminum hydroxide molecules. Chemical Reviews. ,vol. 106, pp. 1- 16 ,(2006) , 10.1021/CR040095D
P. H. Mutin, A. Vioux, Nonhydrolytic Processing of Oxide-Based Materials: Simple Routes to Control Homogeneity, Morphology, and Nanostructure Chemistry of Materials. ,vol. 21, pp. 582- 596 ,(2009) , 10.1021/CM802348C
Bernd Smarsly, David Grosso, Torsten Brezesinski, Nicola Pinna, Cédric Boissière, Markus Antonietti, Clément Sanchez, Highly Crystalline Cubic Mesoporous TiO2 with 10-nm Pore Diameter Made with a New Block Copolymer Template Chemistry of Materials. ,vol. 16, pp. 2948- 2952 ,(2004) , 10.1021/CM0495966