数層のグラフェンのバーク型水素化:製品とメカニズム的な影響
Xu Zhang1, Yuan Huang1, Shanshan Chen2
1Center for Multidimensional Carbon Materials (CMCM), Institute for Basic Science (IBS) , Ulsan 44919, Republic of Korea.
Journal of the American Chemical Society
|December 10, 2016
まとめ
数層のグラフェンはビーチ型還元を経て,調整可能な光学特性を有する水素化製品が得られます. このプロセスはストレスを導入し,sp3-ハイブリッド化された炭素フィルムの経路を作成します.
科学分野:
- 材料科学
- ナノテクノロジー
- 化学
背景:
- 低層グラフェン (FLG) は,ユニークな電子と光学特性を有する有望な材料です.
- グラフェンの水素化を制御することは グラフェンの特性を調節するために不可欠です
- グラフェン改変の以前の方法は,スケーラビリティと制御に制限があります.
研究 の 目的:
- 数層のグラフェンのビーチ型還元を調査する.
- FLGにおける水素化のメカニズムと範囲を理解する.
- 水素化された数層のグラフェンの潜在的応用を探求する.
主な方法:
- Si/SiO2に支えられた数層のグラフェンはリチウムと水で処理された (ビーチ型還元).
- ラーマン光譜法とX線光電子光譜法 (XPS) を用いて水素化の程度を分析した.
- 同位体で標識されたグラフェン (12C/13C) を用いて,試料の浸透を研究した.
主要な成果:
- 二層グラフェンの水素化程度は1. 6から24. 1%の範囲で,ラマンとXPSによって確認された.
- 水素化は主にFLGのエッジや欠陥から発生し,単層グラフェンの反応は均一であった.
- ラベル付けされたグラフェンの実験では,レアゲントが層間を通過し,シート全体に均等な水素化をもたらした.
- 水素化が誘発したストレスと 光学伝達と光が変化した
結論:
- ビーチ型還元は,数層のグラフェンを水素化するための効果的な方法である.
- この研究では,FLGの場所特有の水素化メカニズムが明らかにされています.
- ハイドロゲン化されたFLGは,調整可能な光電子特性と新しいsp3-ハイブリッド化された炭素材料の可能性を提供します.
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