کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
26579 | 43964 | 2011 | 4 صفحه PDF | دانلود رایگان |
New laser ablation method to drastically improve nanoparticle yield was developed. In this method, laser was irradiated from the bottom of a piriform flask to the precipitated powder target. Nanoparticle yield became much higher than that obtained by the conventional method. Silver nanoparticle colloid with high concentration was prepared in a single step and the colloid has been stable for more than 6 months without any chemical reagents. The shape of nanoparticles was estimated to be four-sided pyramid or octahedral by scanning transmission electron microscopy (STEM) observation. In addition, STEM image showed narrow size distribution. A typical bacteria, Bacillus coli, became extinct within 24 h in silver nanocolloid with the concentration of 20 mg/L.
► New laser ablation method to prepare nanoparticles dispersed in liquid was established.
► High nanoparticle yield was achieved by using new laser irradiation method.
► The shape of nanoparticles was estimated to be four-sided pyramid or octahedral.
► A typical bacteria, Bacillus coli, became extinct within 24 h in silver nanocolloid with the concentration of 20 mg/L.
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 226, Issue 1, 15 December 2011, Pages 64–67