15 August 1998 Precipitation of carbon in zeolites using photochemical reaction excited by an ArF excimer laser
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Abstract
A photochemical reaction method in a liquid phase using an argon-fluoride (ArF) excimer laser has been developed to precipitate carbon with nanometer-sized structures in zeolites. This method has the advantages of low-damage and simple process compared with conventional gas phase reaction process. Carbon precipitated in zeolites using this method has shown a broad absorption band located at 3.0 eV which is lower photon energy than that of benzene, Furthermore, a visible photoluminescence (PL) band with a peak around 2.0 eV has been observed at room temperature. These results indicate that benzene ring has been decomposed by the ArF excimer laser and nanometer-sized carbon comparable to fullerene molecules has been precipitated in/on the zeolites.
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Yuka Yamada, Yuka Yamada, Shigeru Takeyama, Shigeru Takeyama, Takaaki Orii, Takaaki Orii, Takehito Yoshida, Takehito Yoshida, } "Precipitation of carbon in zeolites using photochemical reaction excited by an ArF excimer laser", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317940; https://doi.org/10.1117/12.317940
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