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    题名: Promoting Photocatalytic Performance of ZnO Particles by Photochemically Reducing Ag+ on the Particle Surfaces
    作者: 余宣賦;錢東緯
    贡献者: 淡江大學化學工程與材料工程學系
    关键词: Ag deposition;photocatalysis;photochemical reduction;polyol method;zinc oxide
    日期: 2015-01-01
    上传时间: 2015-06-18 10:47:06 (UTC+8)
    出版者: New York: Taylor & Francis Inc.
    摘要: 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.
    關聯: Particulate Science and Technology: An International Journal 33(2), pp.197-203
    DOI: 10.1080/02726351.2014.948977
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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