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sherry93126新蟲 (正式寫手)
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[求助]
石墨烯量子點的分離問題 已有3人參與
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0.21 g (1 mmol) citric acid and 0.23 g (3 mmol) thiourea were dissolved into 5 ml water, and stirred to form a clear solution. Then the solution was transferred into a 20 ml Teon lined stainless autoclave. The sealed autoclave was heated to 160 C in an electric oven and kept for additional 4 hours. The final product was collected by adding ethanol into the solution and centrifuged at 5000 rpm for 5 min. The solid can be easily redispersed into water. 文獻里面給出了這樣的方法,可是最后分離的時候文獻說加入乙醇,離心出固體,可是我都用1200轉速離了20分鐘了,還是離不出來,請問有人做過這種方法嗎,要如何分離呢 |

木蟲 (著名寫手)
銅蟲 (著名寫手)
銀蟲 (正式寫手)
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