1. Inorganic Nanostructured Materials Gerasimos Armatas

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 m 2 /g D p =5 nm Substrate Conversion (%) TOF (h -1 ) Selectivity epoxide:alcohol:ketone cyclooctene 8241.0100:0:0 cyclohexene 307.547:43:10 methyl- cyclohexene 266.581:8:11 Styrene 307.55:0:95 methyl- styrene 287.039:61:0 Epoxidation of alkenes with H 2 O 2 catalyzed by 37wt% PMo 12 /ZrO 2 Other catalytic systems include mesoporous ZrO 2 /[SiW 12 O 40 ] 4-, ZrO 2 /[PW 12 O 40 ] 3-, Al 2 O 3 /[PW 12 O 40 ] 3-, TiO 2 /[W 10 O 32 ] 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. SBA-15 Cr(NO 3 ) 3 H 3 PMo 12 O 40 SBA-15 Cr 2 O 3 /HPMo 400 o C HF b Mesoporous Cr 2 O 3 -Phosphomolybdic acid Solid Solution Frameworks 63wt% HPMo/Cr 2 O 3 H 2 O 2, 50 o C Catalytic oxidation of 1-phenylethanol* *Conv. 87%, TOF=103 h -1, 5 min, CH 3 CN Other materials are mesoporous Co 3 O 4 /[PW 12 O 40 ] 3-, CeO 2 /MoO 3, CeO 2 /Bi 2 O 3. Armatas et el., Chem. Mater. 2010, 22, 5739. c. XPS

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