数層のグラフェンおよびグラフェン酸化物膜を通って選択的なガスの輸送
Hyo Won Kim1, Hee Wook Yoon, Seon-Mi Yoon
1Department of Energy Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
Science (New York, N.Y.)
|October 5, 2013
まとめ
グラフェン酸化物膜は,調整可能なガス分離特性を示しています. 密接に絡み合ったグラフェン酸化物膜は,高炭素二酸化物/窒素選択性を達成し,燃焼後の炭素捕獲に最適です.
科学分野:
- マテリアルサイエンス 材料科学
- 化学工学化学工学とは
- ナノテクノロジー ナノテクノロジー
背景:
- グラフェンとグラフェン酸化物 (GO) は,膜アプリケーションにユニークな性質を持つ2D材料です.
- 薄さ,柔軟性,強さは,高度な分離技術のための可能性を秘めています.
研究 の 目的:
- 選択的なガス分離のために,数層または複数層のグラフェンおよびGOシートを設計する.
- 積み重ね方法,毛孔構造,ガス輸送行動の間の関係を調査する.
- 二酸化炭素を捕獲するためのGO膜の適性を評価する.
主な方法:
- 層状のグラフェン酸化物膜の製造で,相互接続の度合いは異なります.
- 制御されたガス流通チャネルと孔を通じたガス輸送特性の特徴.
- 異なる湿度条件下における二酸化炭素/窒素選択性の評価.
主要な成果:
- 調節可能なガス輸送行動は,層層のGO膜 (3-10 nm) で観察されました.
- ガス拡散選択性は,堆積方法による設計されたガスフローチャネルと孔によって制御されました.
- 高い二酸化炭素/窒素の選択性は,高相対湿度で,よく相互接続されたGO膜で達成されました.
結論:
- エンジニアリングされたグラフェンおよびグラフェン酸化物シートは,望ましいガス分離特性を達成することができます.
- GOのスタッキング構造内の相互接続は,調節可能なガス輸送に不可欠です.
- よく絡み合ったGO膜は,加湿したストリームで,燃焼後の二酸化炭素の捕獲に希望を示しています.
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