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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/103334

    Title: Promoting Photocatalytic Performance of ZnO Particles by Photochemically Reducing Ag+ on the Particle Surfaces
    Authors: 余宣賦;錢東緯
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: Ag deposition;photocatalysis;photochemical reduction;polyol method;zinc oxide
    Date: 2015-01-01
    Issue Date: 2015-06-18 10:47:06 (UTC+8)
    Publisher: New York: Taylor & Francis Inc.
    Abstract: Dispersive Ag nanoparticles were formed on the surface of crystalline ZnO particles, using a photochemical reduction technique, to produce the Ag/ZnO with high photocatalytic performance. The prepared Ag/ZnO particles, as well as the ZnO particles without Ag attachments, were characterized using x-ray diffractometer, transmission electron microscope, and surface area analyzer. The abilities of the ZnO and the Ag/ZnO particles to photocatalytically decompose methylene blue under 365-nm ultraviolet light irradiation were evaluated by determining the corresponding specific reaction rate constant, k′MB,m (based on the mass of the photocatalyst used). While the ZnO crystalline particles (k′MB,m > 0.43 m3/(kg min)) already possessed better photocatalytic performance than the commercial photocatalyst P25 (k′MB,m = 0.39 m3/(kg min)), the Ag/ZnO particles exhibited much better photocatalytic performance than the ZnO particles. The highest k′MB,m for the Ag/ZnO particles was 1.93 m3/(kg min), which was about five times that of the P25.
    Relation: Particulate Science and Technology: An International Journal 33(2), pp.197-203
    DOI: 10.1080/02726351.2014.948977
    Appears in Collections:[化學工程與材料工程學系暨研究所] 期刊論文

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