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Network Covalent Solids

Network Covalent Solids

Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...

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グラフェンオキシード: 一組分材料と二組分材料

Anton Naumov¹, Fabian Grote², Marc Overgaard³

¹Department of Physics and Astronomy, Texas Christian University , TCU Box 298840, Fort Worth, Texas 761291, United States.

Journal of the American Chemical Society

|August 16, 2016

まとめ

この要約は機械生成です。

グラフェン酸化物の構造モデルがテストされました. グラフェン酸化物

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科学分野:

材料科学
ナノテクノロジー
化学について

背景:

グラフェン酸化物 (GO) の構造は,機能群やコア・アドソーベンツシステムに焦点を当てたモデルで議論されている.
GOの光学特性における酸化残渣 (OD) の役割は,論争の的になっている重要な点である.

研究の目的:

グラフェン酸化物 (GO) の2つの構成要素モデルの有効性を調査する.
吸収された酸化廃棄物 (OD) がGOの光学特性に大きな影響を与えるかどうかを判断する.

主な方法:

低機能化GOと酸化残渣 (OD) の準備
GOとODを組み合わせた人工的な2コンポーネントシステムの構築
吸収/放出スペクトルと寿命測定を用いた光学特性分析

主要な成果:

組み合わせたシステムの光学性能は純粋なGOと大きく異なっていた.
実験データでは,GOの光学特性を吸収されたODに代入するモデルと矛盾している.

結論:

グラフェン酸化物の光学特性は,吸収されたODではなく,酸素化された炭素の枠組みに固有のものです.
これは既知の構造モデルを裏付け,GOの性質を信頼できる解釈を可能にします.
グラフェン酸化物の制御された処理を,高度な用途のために容易にする.