114,068 research outputs found

    Synthesis of Co(3)O(4) nanowire arrays supported on Ni foam for removal of volatile organic compounds

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    Crystalline Co3O4 nanowire arrays freely supported on Ni foam are successfully synthesized using a template-free method. The effects of reaction time, concentration of reactants, and temperature on the morphology of the nanowires are studied. The results indicate that uniform Co3O4 nanowires could be synthesized at 90 degrees C, and a transformation of the samples' morphology from nanoparticles to nanowires to microrods is observed by controlling the concentration of the reactants. The well-ordered nanowires synthesized under the selected reaction conditions are composed of spinel Co3O4 with diameters of 500-580 nm and lengths of 6-8 microm. These nanowires show good catalytic activity for the ozone catalytic oxidation of toluene.Hui, K. N.; Yin, Cui-Lei; Hui, K. S.; Lee, J. Y.; Li, M.; Lee, S. K.; Tsui, K. L.; Chao, Christopher Y H; Kwong, C. W

    A high IIP2 direct-conversion mixer using an even-harmonic reduction technique for cellular CDMA/PCS/GPS applications

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    The authors wish to acknowledge FCI Quality & Product Engineering team for measurement support, Dr. K. H. Lim and Dr. S. Han for technical advice, and T. H. Lee and K. Kim for software assistance
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