摘要
采用真空冷冻干燥技术,通过调控前驱体溶液的组成,实现了锌钨氧化物异质结材料的可控制备.前驱物中高分子的引入使煅烧后的氧化物材料很好地保持了三维连通的多孔结构.光催化实验结果表明,获得的系列材料均能够实现对罗丹明B的脱色降解,并表现出组分依赖的光催化活性.氧化锌/钨酸锌三维多孔异质结材料相比于其它样品具有更高的光催化活性,可在180 min内将罗丹明B完全脱色.
The zinc and tungsten oxides and their heterojunctions were controllably prepared by adjusting the precursor compositions using a vacuum freeze drying technology.Owing to the introduction of a polymer in the precursor,the calcined oxide materials could maintain their three dimensional connected porous structures.The photocatalytic experiments showed that the obtained series of materials could achieve the decolorization degradation of Rhodamine B and exhibit component dependent photocatalytic activity.The zinc oxide/zinc tungstate three dimensional porous heterojunctions showed higher photocatalytic activity than the other samples,which could completely decolorize Rhodamine B within 180 min.
作者
刘美宏
陶然
李冰
李兴华
韩朝翰
李晓伟
邵长路
LIU Meihong;TAO Ran;LI Bing;LI Xinghua;HAN Chaohan;LI Xiaowei;SHAO Changlu(School of Physics,Center for Advanced Optoelectronic Functional Materials Research,Key Laboratory of UV Light Emitting Materials and Technology of Ministry of Education,Northeast Normal University,Changchun 130024,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2019年第11期2367-2374,共8页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:51572045,51732003,61803080,91233204)资助~~
关键词
真空冷冻干燥
三维多孔材料
锌钨氧化物
异质结
光催化
罗丹明B
Vacuum freeze drying
Three dimensional porous material
Zinc tungsten oxide
Hetero structure
Photocatalysis
Rhodamine B
