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溶胶-凝胶法制备可见光响应光催化剂K_4Ce_2Ta_(10)O_(30)及其光解水活性

VISIBLE LIGHT-DRIVEN PHOTOCATALYST K_4Ce_2Ta_(10)O_3 PREPARED BY SOL-GEL PROCESS AND ITS PHOTOCATALYSTIC ACTIVTITY FOR WATER DOCOMPOSTION
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摘要 以可溶性的乙醇钽为前体,通过溶胶-凝胶法合成可见光响应光催化剂K4Ce2Ta10O30。XRD、SEM、BET以及UV-Vis等表征手段表明通过溶胶-凝胶法制备的K4Ce2Ta10O30具有分布均匀的纳米颗粒(20～40nm),比表面积高,光吸收红移近30nm。并且在可见光下(λ>400nm)分解水的活性测试中,溶胶-凝胶法制备的样品比高温固相反应获得样品具有更高的光催化分解水活性。 Visible light-driven photocatalyst K4Ce2Ta10 O30 was prepared by Sol-Gel process using dissolvable precursor tantalum ethoside. The XRD, BET, SEM and UV-Vis characterizations indicated that this sample prepared by Sol-Gel process showed more fine crystal particles （20-40nm） and higher specific surface areas than that from conventional high temperature reaction methods. As for their photocatalytic activities for water decomposition under visible light irradiation （λ 〉 400 nm）, the sample from Sol-Gel showed higher H2 evolution activities as the result of the higher surface areas, higher active sites for reaction.
作者 田蒙奎 尚百伟 上官文峰
机构地区 贵州大学化学与化工学院 上海交通大学机械与动力工程学院燃烧与环境技术研究中心
出处 《太阳能学报》 EI CAS CSCD 北大核心 2012年第9期1565-1568,共4页 Acta Energiae Solaris Sinica
基金 国家重点基础研究发展(973)计划(2009CB220004) 贵州省社发攻关项目(黔科合SZ字[2008]3008) 贵阳市科技攻关项目([2008]筑科合同字第014号) 贵州大学人才引进项目[017(2007)]
关键词 溶胶-凝胶 可见光响应 光解水 K4Ce2Ta10O30 Sol-Gel visible light-driven water decomposition by photocatalysis KnCe2Ta10O30
分类号 TQ032.4 [化学工程]
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参考文献10

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太阳能学报
2012年 第9期

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