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[求助]
求助氧化石墨的氨基化
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按照如下步骤怎么制备不成功呀？请教问题在何处？ 10 ml ofgraphene oxide (3 mg/ml) was amalgamated with EDC (60 mg)for 5 min and then ethylenediamine (EDA) (1 ml) was added dropwised under vigorous stirring. The suspension was slowly dissolvedand the color turned from brown to dark black. The obtained sus-pension was then washed using ethanol. The resulting reducedgraphene oxide suspension was centrifuged to remove excessiveEDA and EDC and this procedure was repeated 5 times. After that,the suspended mixture was allowed to dry in oven at 60◦C for 1 h.350 mg of the prepared NH2-GO powder was added into 1 ml ofCdS QDs solution and the mixture was then sonicated for 30 min at60◦C. The sample is referred as NH2-GO/QDs.@jiagle@fds329 |
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