等级孔纳米片CaTiO3光子晶体及气相光催化研究

来源 :2017第十五届全国光化学学术讨论会 | 被引量 : 0次 | 上传用户:vampirewoo
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  光子晶体结构(Photonic Crystal,PC)的慢光子效应及多重散射对光吸收的增强作用,已经被应用于TiO2[1]、ZnO[2]等半导体材料中,但CaTiO3作为骨架材料还未有报道.本小组利用聚苯乙烯作为硬模板通过溶胶凝胶法制备PC-CaTiO3,得到由2D纳米片组装形成大孔-介孔-微孔等级孔结构材料,并通过气相光催化氧化丙酮评价其光催化性能.结果显示,在1h内,72.2%的丙酮被降解,该优异的催化性能归因于:光子晶体结构增强了光吸收,等级孔结构有利于丙酮及降解产物的扩散,纳米片较少的结构缺陷及高的比表面积.
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