以聚苯乙烯微球为模板制备PS/CeO2复合颗粒,再通过煅烧去除PS内核形成CeO2纳米中空球,并通过控制反应液中硝酸铈的浓度来最终控制中空球的壳厚.用TEM、FESEM、SAED、FTIR、DLS等手段,对所制备样品的物相结构、形貌和粒径分布进行了表征.结果表明,CeO2中空球内径约为200 nm,外径约为230-260 nm,壳厚分别约为15、20、25和30 nm,中空球壳层由大量粒径为5-10 nm的纳米CeO2颗粒紧密堆积所组成.经CeO2中空球催化臭氧氧化处理2h后,对苯酚的降解率可达95%以上.
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