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Inorganic Nanostructured Materials

Inorganic Nanostructured Materials. Gerasimos Armatas. Research activities. Research activities focused on design and synthesis of nanostructured mesoporous materials and their applications , including:

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Inorganic Nanostructured Materials

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  1. Inorganic Nanostructured Materials GerasimosArmatas

  2. Research activities Research activities focused on design and synthesis of nanostructured mesoporous materials and their applications, including: • Nanoporous metal oxides using ‘soft’ or ‘hard’ templated (nanocasting) self-assembly approaches • Periodically ordered mesoporous polyoxometalate-containing frameworks • Nanostructured inorganic semiconductors • Structural and chemical modification of nanocomposite structures • Applications in heterogeneous catalysis, absorption, optoelectronics and gas separation

  3. Hexagonal Mesoporous Zirconia-POM Nanocomposites c 103 m2/g Dp=5 nm Epoxidation of alkenes with H2O2 catalyzed by 37wt% PMo12/ZrO2 Other catalytic systems include mesoporous ZrO2/[SiW12O40]4-, ZrO2/[PW12O40]3-, Al2O3/[PW12O40]3-, TiO2/[W10O32]4-nanocomposites. G.S Armatas et el., J. Mater. Chem.2010, 20, 8631; G.S.Armatas et el., J. Mater. Chem. 2011, 21, 2997

  4. Mesoporous Cr2O3-Phosphomolybdic acid Solid Solution Frameworks c. XPS 63wt% HPMo/Cr2O3 H2O2, 50 oC b Catalytic oxidation of 1-phenylethanol* HF 400oC Cr2O3/HPMo SBA-15 Cr(NO3)3 H3PMo12O40 SBA-15 Cr2O3/HPMo Other materials are mesoporous Co3O4/[PW12O40]3-, CeO2/MoO3, CeO2/Bi2O3. Armatas et el., Chem. Mater. 2010, 22, 5739. *Conv. 87%, TOF=103 h-1, 5 min, CH3CN

  5. Mesoporous Germanium Semiconducting Frameworks (collaboration with Northwestern University, USA) Band gap Evolution with Wall Thickness in a Nanostructured Semiconductor G.S. Armatas, M.G. Kanatzidis, Nano Lett. 2010, 10, 3330

  6. Collaborators • Prof. M. Kanatzidis (NU) • Prof. M. Louloudi (UoI) • Prof. P. Pomonis (UoI) • Prof. K. Triantafyllidis (AUTH) • Prof. I. Lykakis (AUTH) • Prof. M. Stratakis (UoC) • Dr. P. Chupas (ANL) Funding

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