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jiaqiangli

银虫 (小有名气)

[求助] 有关CVD制备石墨烯的问题已有2人参与

本人想根据文献上的方法用CVD法制备石墨烯,但是所用的原料为液体,操作步骤中提到是在石英管升温1000摄氏度后注入液体原料,不知道有做过类似方法的朋友没,需要用到什么样的石英管?具体怎么操作?求指点。
文献具体方法如下:In a typical experiment, a quartz tube was placed in a tubular furnace. Then, the temperature at the hot zone of the quartz tube, which was loaded in the tubular furnace, was raised to 10008C at an Ar flow rate of 600 mLmin1. After the air in the quartz tube had been replaced by Ar, 10 mL of a toluene solution with 2.5 wt% TPP was injected close to the hot zone of the quartz tube at a flow rate of 2 mLh1, where it was vaporized and carried to the hot zone of the quartz tube by the Ar flow. To
guarantee complete pyrolysis of the solution, the tubular furnace was mainteined at 10008C for 30 minutes after the 10 mL of the toluene solution had been conveyed completely into the quartz tube. The furnace was then cooled down to room temperature at an Ar flow rate of 100 mLmin1. Afterwards, the resulting sample was collected from the inner wall of the quartz tube at the hot zone. For comparison, the carbon materials without any P dopant were synthesized by the same method using toluene.
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aliancer

木虫 (正式写手)

【答案】应助回帖

液体做为碳源来生长石墨烯,一般是通过把液体转化为气相来反应的,比如Ar通过碳源液体,携带少量液体碳源进入反应区。看你给的文献的思路,是通过把液体带入石英管中靠近热区的位置,蒸发进入石英管中的
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4楼2015-08-02 17:48:09
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迪欧石英仪器

银虫 (正式写手)


【答案】应助回帖

商家已经主动声明此回帖可能含有宣传内容
感谢参与,应助指数 +1
石英管很简单,根据您的管事炉来确定管径和长度就可以,对于管两端如何处理,是看您整体的方案了,有接法兰的,也有接石英炉帽的

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2楼2015-07-06 16:30:17
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微晶材料wjcl

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3楼2015-07-21 08:58:31
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