レーザープラズマフィラメントによる有機塩素化合物の炭素粒子化

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2015/09/01

タイトル(英語): Graphitization of Chlorohydrocarbons in Laser-induced Plasma Filaments

著者名: 宮坂　枝里奈（大阪市立大学大学院理学研究科），濵口　智行（大阪市立大学大学院理学研究科），八ッ橋　知幸（大阪市立大学大学院理学研究科）

著者名(英語): Erina Miyasaka (Graduate School of Science, Osaka City University), Tomoyuki Hamaguchi (Graduate School of Science, Osaka City University), Tomoyuki Yatsuhashi (Graduate School of Science, Osaka City University)

キーワード: 炭素ナノ粒子，ジクロロメタン，フェムト秒レーザー，廃棄物処理　　carbon nanoparticles，dichloromethane，femtosecond laser，waste treatment

要約(英語): The decomposition of aqueous chlorohydrocarbons regarded as environmental pollutants has been widely studied. However, it is usually difficult to separate liquid and/or volatile products originated from chlorohydrocarbons from reactant solution. We succeeded to precipitate hydrophobic carbon nanoparticles and their agglomerates from aqueous dichloromethane by femtosecond laser (0.8 µm, 40 fs) irradiation. In the case of water/dichloromethane bilayer solution, the precipitates were produced in abundance when the water layer was exposed to femtosecond laser pulses. The time evolution of pH and transmittance revealed that the precipitation of carbon particles was preceded by dechlorination. Focusing intense femtosecond laser pulses onto water creates a high density of reactive species in a well-confined volume; i.e., plasma filament. The graphitization hence solidification by using laser pulses could be an useful way to remove chlorinated compounds from their aqueous solution.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.135 No.9 （2015） 特集：サステナブル社会・先端応用へ向けたレーザプロセシング技術

本誌掲載ページ: 1075-1079 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/135/9/135_1075/_article/-char/ja/