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ztt06鐵桿木蟲 (文壇精英)
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[交流]
材料制備使用的超聲儀器
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我們通常使用超聲波清洗器進(jìn)行分散,今天閱讀文獻(xiàn)發(fā)現(xiàn)有人提到了 “ sonics &materials vc750 ultrasonic generator (sonics & materials inc., usa). ”中進(jìn)行超聲30min,所需要的3d氧化鐵材料就得到了。請問超聲清洗器和超聲破碎儀有何區(qū)別? 具體描述如下:iron nitrate (iii) nonahydrate ([fe(no3)3⋅9h2o], 16.16g, 40mmol, sigma-aldrich, usa) was dissolved in 1-propanol (proh, 34ml, samchun, korea) in a glass reactor (∼50ml). ultrasound of 20khz frequency with amplitude of 60% was then irradiated on the 1m solution for30minusing a sonics &materials vc750 ultrasonic generator (sonics & materials inc., usa). after completion of the reaction, a precipitate was isolated by centrifugation for 5min at 4000rpm and washed three times with ethanol (etoh, samchun, korea). then, the precipitate was dried overnight at 60°c in a drying oven. for calcination, the dried powders were heat-treated at 200 and 400°c for 3h in atmospheric air environment. throughout this study, the following nomenclature is used to identify hierarchically 3d nanotubular sea urchin-shaped iron oxide nanostructures that were subjected to the various processing steps: 3dfe2o3-as, as-synthesized iron oxide by ultrasound irradiation processing; 3d-fe2o3-200, heat treated 3d-fe2o3-as at 200°c; 3d-fe2o3-400, heat treated 3d-fe2o3-as at 400°c |
銀蟲 (著名寫手)
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