吕宁,张建广,黄丽晨,宋贤良

• 1:华南农业大学食品学院

摘要(Abstract)：

采用混合-煅烧法对纳米P25进行Mo、N掺杂改性,得到Mo-P25、N-P25光催化材料并通过表面吸附法将其负载在淀粉膜上,制备出Mo(N)-P25/淀粉光催化膜。运用X射线衍射(XRD)、紫外可见分光光度法(UV-Vis)、扫描电镜(SEM)、透射电镜(TEM)、能谱仪(EDS)和X射线光电子能谱(XPS)等手段对光催化材料进行表征。结果表明,采用混合-煅烧法可将Mo、N成功掺杂到P25中,经Mo、N修饰的P25材料在可见光区有明显吸收;吸附次数影响纳米材料在淀粉膜表面的分布及光催化性能,其中吸附2次的淀粉膜表面纳米颗粒分布较均匀,并形成细微孔隙,增大了乙烯气体与光催化材料的接触机会和接触面积,同时光催化活性评价也表明吸附2次的淀粉光催化膜对乙烯的降解效果最好。

关键词(KeyWords)： P25;Mo;N;乙烯;淀粉膜;可见光催化剂

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(31371855);; 广州市科技项目(2014J4100150)

作者(Author): 吕宁,张建广,黄丽晨,宋贤良

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