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The aqueous extract of Chinese winter jujube (Ziziphus jujuba Mill. cv. Dongzao) was used as reducing and capping agents for the synthesis of silver nanoparticles (AgNPs) for the first time. The resulting AgNPs were characterised by UV/Visible (UV-Vis) spectroscopy, atomic force microscope, transmission electron microscopy, selected area electron diffraction, X-ray diffraction, scanning electron microscopy,...
At the growth temperature at and above 700degC as well as C2H4 flow rate of 20 seem,, carbon nanotubes (CNTs) were synthesized on the SiO2 substrates dip-coated with Co acetate only. The fine dispersion of Co particles was caused by a strong interaction between metal acetate and SiO2 support. Due to the high process (atmospheric) pressure, the reduced catalytic activity of Co could not assist CNT...
A highly sensitive gas sensor employing mixed oxide (Ti-W-O) has been developed for the detection of hydrocarbons. The sensing performance of the Pt/(Ti-W-O)/SiC based metal reactive oxide silicon carbide (MROSiC) devices has been investigated as a function of temperature and different concentration of propene in synthetic air. When operated at 420degC, a 2.52V shift was observed when 1% propene was...
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