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

Ding Delei Lan Wei Yang Zhiwei Zhao Xiaohua Chen Youxin Wang Junya Zhang Xuetao Zhang Yue Su Qing Xie Erqing · 2016

阅读量：192

碳量子点

期刊名称：

Materials Science in Semiconductor Processing 2016 年 47 卷

发表日期：

2016.06.01

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.