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[求助]
制備氧化石墨烯Improved Synthesis of Graphene Oxide這篇文獻(xiàn)中的幾個(gè)問題 已有1人參與
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最近在根據(jù)Improved Synthesis of Graphene Oxide這篇文獻(xiàn)制備氧化石墨烯,這其中有幾個(gè)問題沒有弄明白,懇請(qǐng)各位高手幫我解答一下: 1.the mixture was sifted through a metal U.S. Standard testingsieve (W.S. Tyler, 300微米) and then filtered through polyester fiber (Carpenter Co.) The filtrate was centrifuged (4000 rpm for4 h), and the supernatant was decanted away. 聚酯纖維和300微米篩可以不用嗎,直接離心4小時(shí)行不行? 2.The solid obtained on the filter was vacuum-dried overnight at room temperature.真空干燥在室溫下需要多久,可否在真空干燥箱中加熱? 3.用這種方法制備的準(zhǔn)確說應(yīng)該是氧化石墨而不是氧化石墨烯吧,接下來是不是將干燥的氧化石墨再超聲分散于水中就成了氧化石墨烯分散液?氧化石墨烯是不是一般不宜以固體形式存在? 在制備石墨烯這方面有經(jīng)驗(yàn)的都來交流下吧,在此謝過大家了! |
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