Single-Step Synthesis of LaMnO3/MWCNT Nanocomposites and Their Photocatalytic Activities

被引：11
|
作者：
Huang, Hao [1 ]
Sun, Guangren [1 ]
Hu, Jie [1 ,2 ]
Jiao, Tifeng [2 ,3 ]
机构：
[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao, Peoples R China
[2] Yanshan Univ, Sch Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao, Peoples R China
[3] Chinese Acad Sci, Natl Key Lab Biochem Engn, Inst Proc Engn, Beijing, Peoples R China
来源：
NANOMATERIALS AND NANOTECHNOLOGY | 2014年 / 4卷
基金：
中国国家自然科学基金;
关键词：
Carbon nanotubes; Nanocomposites; Perovskite-type structure; Photocatalysis; WALLED CARBON NANOTUBES; AZO-DYE; NANOPARTICLES; DEGRADATION; SRTIO3; ZNO;
D O I：
10.5772/59063
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Composites of the nano-sized perovskite-type oxide of LaMnO3 and multi-walled carbon nanotubes (MWCNTs) were synthesized in a single step using the sol-gel method. Their photocatalytic activities for the degradation of various water-soluble dyes under visible light were evaluated. The prepared samples were characterized by thermogravimetry analysis, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, photoluminescence spectroscopy and UV-vis diffused spectroscopy. Results showed that LaMnO3 nanoparticles grew on the surface of MWCNTs with a grain size of around 20 nm. Photocatalysis measurements revealed that the LaMnO3/MWCNT nanocomposites had greater photocatalytic activities than pure LaMnO3 nanoparticles, and the mass percentage of MWCNTs showed that 9.4% possessed the highest photocatalytic activity. These results indicate that LaMnO3/MWCNT nanocomposites are promising candidates as highly effective photocatalysts.
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页数：8
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