Usmmy semiconductor nanoparticles are very attractive

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Unformatted text preview: inc selenide (ZnSe) nanoparticles as a fluorescent semiconductor materials for molecular imaging and biomedical applications. The fluorescence properties of the nanoparticles were investigated via absorption and emission by using UV-Vis spectrophotometer, UV-light microscope and PL spectrometer. The emission spectra of ZnSe nanoparticles were found to be highest at 360 nm (blue). Viable cell analysis using MTS assay showed that ZnSe nanoparticles are significantly induce the proliferation of mouse spleen cells after 72 hrs co-culture. The result indicates that ZnSe, at low concentration may interact with immune cells. Taken together, the emission sp ectrum and the biological property of nanoparticles may indicate their potential application in medicine. 1 147 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia MAT-O11 ISOMERIZATION OF n-BUTANE OVER TUNGSTEN-ZIRCONIA CATALYST 1 Ainul Hakimah Karim, Sugeng Triwahyono, Aishah Abdul Jalil, Nurrulhidayah Ahmad Fadzlillah, 1 1 Nurun Najwa Ruslan and Sharifah Najiha Timmiati 1* 2 1 1 Ibnu Sina Institute for Fundamental Science Studies, Universiti Teknologi Malaysia, 81310 UTM Skudai, Johor, Malaysia 2 Faculty of Chemical and Natural Resources Engineering, Universiti Te knologi Malaysia, 81310 UTM Skudai, Johor, Malaysia E-mail: sugeng@ibnusina.utm.my The influence of WO3 loading (5, 10,13,15,20 wt %) supported on zirconia solid a cid catalysts has been studied. WO3-ZrO2 catalysts were prepared by impregnation of Zr(OH)4 with ammonium metatungstate complex solution, followed by calcination at 1093 K in air for 3 h. The series of catalysts were characterized by means of X-ray diffraction, ammonia temperature-programmed desorption, Raman spectroscopy and pyridine-preadsorbed FTIR spectroscopy. The activities of the catalysts were tested in n-butane isomerization in the presence of hydrogen. A maximum activity was found at the sample with 13 wt % tungsten loading. The catalytic activity is suggested to associate with the h ighest acidity and surface area. MAT-O12 QUANTITATIVE ANALYSIS OF ACIDIC SITES OF SOLID ACID CATALYSTS BY PYRIDINE PRE-ADSORBED FTIR SPECTROSCOPY 1 Nurrulhidayah Ahmad Fadzli...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

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