メソポラス・カーボン内の安定性と活性性を改善したポルフィリンを含む金属サイクルの構築
Li-Jun Chen1, Shangjun Chen2, Yi Qin1
1Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Chang-Kung Chuang Institute, School of Chemistry and Molecular Engineering , East China Normal University , Shanghai 200062 , People's Republic of China.
Journal of the American Chemical Society
|April 7, 2018
まとめ
研究者らは,メソポラス炭素 (3C) の内部で,新種のポルフィリンベースのメタルサイクルの触媒を作り出した. このハイブリッド材料は安定性と活性性を高め,光酸化触媒を大幅に改善します.
科学分野:
- 材料科学
- カタリシス
- 超分子化学
背景:
- ポルフィリン基の金属サイクルは有価な触媒であるが,溶液中の安定性や活性が悪いことが多い.
- これらの触媒を 毛細な材料に閉じ込めると 性能と再利用性が向上します
- メソポラスな炭素材料は,触媒の固定化のための頑丈で汎用的なプラットフォームを提供します.
研究 の 目的:
- メソポラス炭素FDU-16 (3Cと表記) に閉じ込められたポルフィリン機能化された金属サイクルを合成し,特徴づけること.
- 閉じ込められた金属サイクルの安定性や触媒活性が,その自由な同位体と比較して高まっていることを評価する.
- 硫化物の光酸化のための異質な触媒としての3C混合材料の有用性を実証する.
主な方法:
- ポルフィリン機能化された金属サイクルの合成.
- メタラサイクルをメソポラス炭素FDU-16のフレーム内で封入する.
- さまざまなスペクトルおよび顕微鏡技術を用いたハイブリッド材料の特徴化.
- シングレット酸素生成効率の評価
- 硫化物の光酸化における触媒性能の試験
主要な成果:
- FDU-16のメソポラス炭素腔 (3C) 内でのポルフィリン機能化された金属サイクルの建設に成功した.
- 閉じ込められた金属サイクルは,高い分散性により,安定性と触媒活性が著しく改善された.
- 3Cのシングレット酸素生成効率は,溶液中の自由金属サイクルの約6倍でした.
- 3C混合材料は,硫化物の光酸化のための効果的な異質な触媒を示した.
結論:
- ポルフィリンで機能化された金属サイクルは,メソポラス炭素FDU-16内に成功的に閉じ込められ,非常に効果的なハイブリッド材料 (3C) を生み出します.
- メソポラスな炭素の中に閉じ込められることで,金属サイクルの安定性と活性が向上し,優れた触媒性能をもたらします.
- 3C材料は,特に硫化物に対して,効率的な光酸化反応のための有望な異質な触媒である.
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