A simple method for preparing ZnO foam/carbon quantum dots nanocomposite and their photocatalytic applications

被引：61
作者：
Ding, Delei [1 ,2 ]
Lan, Wei [1 ,2 ]
Yang, Zhiwei [1 ,2 ]
Zhao, Xiaohua [1 ,2 ]
Chen, Youxin [1 ,2 ]
Wang, Junya [1 ,2 ]
Zhang, Xuetao [1 ,2 ]
Zhang, Yue [1 ,2 ]
Su, Qing [1 ,2 ]
Xie, Erqing [1 ,2 ]
机构：
[1] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Key Lab Magnetism Mat Educ, Lanzhou 730000, Peoples R China
来源：
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2016年 / 47卷
关键词：
ZnO foam; Combustion; Carbon quantum dots; Nanocomposite; Photocatalytic; LIGHT; DEGRADATION; NANOSHEETS; NANOTUBES; WATER;
D O I：
10.1016/j.mssp.2016.02.004
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
ZnO foam/carbon quantum dots (CQDs) nanocomposite has been successfully synthesized by a facile process which ZnO foam prepared by combustion method was dispersed in CQDs solution. It is found that the ZnO foam is constructed by a large number of ZnO nanoparticles filling in irregular, hierarchical pores. The foam structure originates from a large amounts of gas produced in the combustion process. The obtained ZnO foam/CQDs nanocomposite shows excellent photocatalytic activities on degrading Rhodamine B (RhB), Methyl orange (MO) and Methylene blue (MB) under UV and visible light irradiation. The order of degradation efficiency is MB > RhB > MO. It is attributed to the synergistic effect of several factors, including the light-trapping effect of ZnO foam, the up-converted photoluminescence behavior and photo-induced electron transfer property of CQDs. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：25 / 31
页数：7
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