ZnO/carbon quantum dots nanocomposites: one-step fabrication and superior photocatalytic ability for toxic gas degradation under visible light at room temperature

被引：237
作者：
Yu, Hang
Zhang, Hengchao
Huang, Hui
Liu, Yang [1 ]
Li, Haitao
Ming, Hai
Kang, Zhenhui
机构：
[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou, Peoples R China
来源：
NEW JOURNAL OF CHEMISTRY | 2012年 / 36卷 / 04期
基金：
中国国家自然科学基金;
关键词：
RESONANT RAMAN-SCATTERING; ZNO; TIO2; NANOSTRUCTURES; OXIDE;
D O I：
10.1039/c2nj20959d
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
ZnO/carbon quantum dots (ZnO/CQDs) nanocomposites were prepared by a one-step hydrothermal reaction and used as superior photocatalysts for the degradation of toxic gas (benzene and methanol) under visible light at room temperature. The as-prepared ZnO/CQDs nanocomposites were characterized by X-ray powder diffraction, Raman spectra, Fourier transform infrared spectroscopy, UV-Vis absorption spectroscopy, scanning and transmission electron microscopy. The results show that these nanocomposites exhibit higher photocatalytic activity (degradation efficiency over 80%, 24 h) compared to N doped TiO2 and pure ZnO nanoparticles under visible light irradiation. In the present catalyst system, the crucial roles of CQDs in the enhancement of photocatalytic activity of the ZnO/CQDs nanocomposites are illustrated.
引用
收藏
页码：1031 / 1035
页数：5
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