Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
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79 巻 , 10 号
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第46回論文特集号 グリーン・サステイナブルケミストリーの実現に向けた光機能界面の発展
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  • 池田 勝佳
    79 巻 (2011) 10 号 p. 768-772
    公開日: 2012/03/30
    ジャーナル フリー
    Plasmonic field localization is normally utilized on irregularly roughened surfaces or nanostructured surfaces of coinage metals. Although localized fields increase photon-molecule interactions, metal-molecule interactions become an uncontrollable variable because atomic surface features are not organized in such nanostructured metals. However, construction of sphere-plane nano-gaps on atomically defined metal surface enables us to manage metal-molecular interactions in addition to control of plasmonic resonance features. In SERS spectroscopy using this system, well-managed electromagnetic and chemical contributions provide detailed information on geometric and electronic structures of molecular adsorbates. Moreover, highly localized fields within the nano-gaps extend the range of SERS application to highly damping catalytic metal surfaces. In photo-energy conversion, incident photon to current conversion efficiency in porphyrin-based molecular monolayer system is largely increased by optical antenna effect of the nano-gaps.
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  • 落合 剛, 中田 一弥, 村上 武利, 森戸 祐幸, 細川 俊介, 藤嶋 昭
    79 巻 (2011) 10 号 p. 838-841
    公開日: 2012/03/30
    ジャーナル フリー
    The novel photocatalysis-plasma hybrid air-purification unit using a titanium-mesh sheet modified with TiO2 (TMiPTM) and a surface discharge-induced plasma (SPCP) was investigated. The SPCP unit generates air-plasma on wide area of its surface and TMiP sheet was successfully irradiated by air-plasma without any destruction. Significant decomposition of the ammonia gas has been achieved by the photocatalysis-plasma hybrid reactor. In the present experimental condition, the SPCP unit without TMiP and UV-lamp with TMiP was not effective on the decomposition of the ammonia gas. Therefore, synergistic effects of catalytic activation and plasma excitation on the hybrid reactor with large surface area is useful for significant oxidative decomposition of gaseous pollutants.
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