利用鐵鎳銅錳合金製備大面積石墨烯之研究

Synthesis of Large-Area Graphene Layer from Fe-Ni-Cu-Mn Alloy

蔡易霖(Yi-Lin Tsai)

指導教授 ： 徐開鴻

國立臺北科技大學/工程學院/材料科學與工程研究所/碩士(2012年)

https://doi.org/10.6841/NTUT.2012.00253

摘要

本研究以液相之鐵鎳銅錳合金溶解石墨粉後再析出大面積石墨層。以真空熔煉爐最高限制溫度1350 ℃加熱並持溫5小時，透過鐵鎳銅錳合金本身的配比變化獲得具多樣形貌的樣品，並由其中發現幾個可產生大面積石墨烯訊號之合金配比。根據觀察，合金表面適度生長的樹狀晶結構搭配適度的石墨皺摺有助於石墨層產生分層，即層與層之間失去凡德瓦爾鍵結，令厚層石墨層分開而成為疊加的石墨烯。
根據研究結果，銅元素扮演著控制碳原子析出的角色，而錳元素則令銅元素的排碳機制異質提升，令分層現象在某些特定配比下劇烈的產生。再經由酸蝕刻分離取下具疊加石墨烯訊號之石墨層，石墨烯最大面積可達大約2500μm2。
本研究並透過簡易之樣品定位分析技術，來確認疊加石墨烯表面形貌與實際面積。藉由此樣品定位分析記錄綜合先前之研究所得結果，將可實際理解液相金屬法合成大面積多層石墨烯層之準則，做為進行高品質石墨烯層應用研究的依據。

關鍵字

石墨層 ； 疊加石墨烯 ； 石墨層成長機制

並列摘要

This research used the liquid phase of Fe-Ni-Cu-Mn alloy to dissolve graphite powder; precipitate then synthesis to a large-area graphite layer on the surface of the alloy. We made use of a smelting vacuum furnace at 1350 ℃ for up to 5 hours to obtain the various samples in different alloy power ratios. And, we found some formulas which can produce a large-area graphene. According to our observation, A proper dendrite structure collocate a fine graphite wrinkle which will help the forming of partition phenomenon between graphite layers. In other words, the van der Waals bond might be vanished between graphite layers, so the graphite disassemble into the folded graphenes.
According to this research, copper plays an important role of controlling the segregation of carbon, and manganese enhances its ability. The partition phenomenon then take place dramatically in some alloy formulas. Finally, we separate its folded graphene film from the alloy surface by means of etching. The maximal area of graphene is about 2500μm2
We also observed the surface of the graphene to check the relation of appearance and graphene area by a simple location skill. Therefore, we can understand the principle to form the large area graphene layer by liquid phase metals, so as to be the foundation of application of high quality graphene layers.

並列關鍵字

graphite layer ； folded graphene ； the mechanism of graphite layer growth

參考文獻

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[12] 吳亭瑩，銅鎳合金系統製備大面積石墨膜之研究，碩士論文，國立臺北科技大學材料科學與工程研究所，台北，2010。

[13] 谷紹民，利用鐵鎳銅合金製備大面積石墨層之研究，碩士論文，國立臺北科技大學材料科學與工程研究所，台北，2011。

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