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[求助]
超臨界法合成石墨烯 已有1人參與
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| 前幾天看到文獻介紹說可以用超臨界法從石墨直接制備石墨烯,覺得這個方法很簡單,想嘗試下,但不知道這對設(shè)備什么的有沒有特殊要求?想求助各位大師幫忙解答下,并希望能對機理進行簡單描述。下附英文實驗方法原文。Commercial powdered natural graphite was used as our starting material. The commercial graphite has a particle size of ~70 μm with a purity of 99.99995% and a density of 2.25 g/cm3. One gram of graphite was placed in a high-pressure vessel with a heater and a temperature controller. CO2 was then added into the vessel until the pressure reached 100 b. Heat was applied to the vessel so that the temperature of the vesselwas kept at 45 °C. The graphitewas immersed in the supercritical fluid for 30 min. |
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http://pan.baidu.com/disk/home?這是我看到的那篇介紹超臨界法制備石墨烯的文獻,麻煩幫忙解答下。謝咯!我的疑惑是為什么此種方法得到的不是膨脹石墨而是石墨烯。 |

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