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环境化学  2015 

TiO2纳米棒对四环素的光催化降解

Keywords: TiO2纳米棒,水热合成法,光催化,四环素

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Abstract:

采用一步水热法合成了钛酸纳米材料,并以此为前驱体,通过二次水热处理制备了新型材料.使用XRD,TEM,N2吸附等温线等手段对催化剂进行了表征.结果表明,两种材料都为棒状纳米催化剂,其中二次水热材料为锐钛矿.光催化降解四环素结果表明两种催化剂都具有较高活性,二次水热纳米棒反应速率常数为一次水热材料的7倍;动力学实验表明TiO2纳米棒对四环素的光催化反应符合Langmuire-Hin-shelwood模型.

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