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Asefa Research Group Contact Information Website: http://www-che.syr.edu/faculty/asefa_group/index.html Email: tasefa@syr.edu Research Interests
ARG Experimental Facilities Our newly completely renovated lab space (1,600 sq. ft) consists of six, big (6-ft) brand-new fume hoods, large bench-spaces, and spacious and beautiful student offices. Our lab is also equipped with various types of brand new instrumentation including UVVis- NIR spectrophotometer (Labmda 950, Perkin Elmer), a thermogravimetric analyzer with autosampler (TGA, Q-500, TA Instruments - shared with Prof. Doyle), a GC-MS spectrometer (HP-572), a Tristar 3000 gas adsorption instrument, a Micrometrics ASAP 2020 gas adsorption instrument (shared with Prof. Chaiken and Zubieta), an 8-step programmable furnaces (up to 1,200C, a Potentiostat (PAR 263 - Princeton Applied Research), an oven furnace, a centrifuge (ALC), a nanopure water purification system (Barnsted), Rotavap (Yamamoto), Ultrasonicators (Branson), fridges, freezers, heating baths and mantles, etc. We also have access to the Cornell Nanoscale Facility (CNF) at Cornell University, a national users' facility and one of the best nanofabrication facilities in the country. CNF is about one hour drive away from Syracuse and it has a large number of state-of-the-art facilities in Class-100 clean rooms. We currently use sputtering, profilorometer, e-Beam evaporator, nanolithography tools, etc. at CNF, which are great resources for our nanomaterials research. We additionally have access at the Cornell Center for Materials Research (CCMR) at Cornell University to do our low-angle X-ray diffraction experiments on our nanoporous and mesoporous materials using Small Angle X-ray scattering (SAXS) and powder X-ray diffraction as well as high resolution TEM instruments. Students in our groups constantly travel to CNF and CCMR at Cornell University to have hands-on experience on such instrumentation and to conduct their experiments and research. We get beam-times at Cornell High Energy Synchrotron Source (CHESS) at Cornell University twice a year to carry out some experiments by using state-of-the-art synchrotron sources. We also use solid-state NMR spectrometer, transmission electron microscope (TEM) and scanning electron microscopes at SUNYESF just across the street from where we are, another TEM instrument at nearby SUNY Upstate Medical University, and still another SEM machine in the Geology Department at Syracuse University. Sample Publications 1. Sharma, K.K.; Asefa, T.* "Efficient bifunctional nanocatalysts by simple postgrafting of spatially-isolated catalytic groups on mesoporous materials" Angew Chem. Int. Ed., 2007, 46, 2879-2882. 2. Shi, Y.-L.; Asefa, T.* "Tailored core-shell-shell nanostructures: Sandwiching gold nanoparticles between silica cores and tunable silica shells" Langmuir, 2007, 23 Published in the web - ASAP Article. 3. Asefa, T.; Shi, Y.-L.* "Super-stable high-quality Fe3O4 dendron-nanocrystals dispersible in both organic and aqueous solutions" Chemtracts, 2006, 19, 299-305. 4. Asefa, T.; Lennox, R. B. "Synthesis of gold nanoparticles via electroless deposition in SBA-15." Chem. Mater. 2005, 17, 2481-2483. 5. Asefa, T.; Kruk, M.; Coombs, N.; Grondey, H.; MacLachlan, M.J.; Jaroniec, M.; Ozin, G.A. "Novel routes to periodic mesoporous aminosilicas, PMAs: Ammonolysis of periodic mesoporous organosilicas." J. Am. Chem. Soc. 2003, 125, 11662-11673. Return to Research |
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