Core/shell nanofibers of TiO2@carbon embedded by Ag nanoparticles with enhanced visible photocatalytic activity

被引：139

作者：

Zhang, Peng ^{[1
,2
]}

Shao, Changlu ^{[1
,2
]}

Zhang, Zhenyi ^{[1
,2
]}

Zhang, Mingyi ^{[1
,2
]}

Mu, Jingbo ^{[1
,2
,3
]}

Guo, Zengcai ^{[1
,2
,3
]}

Sun, Yangyang ^{[1
,2
]}

Liu, Yichun ^{[1
,2
]}

机构：

[1] NE Normal Univ, Ctr Adv Optoelect Funct Mat Res, Changchun 130024, Peoples R China

[2] NE Normal Univ, Minist Educ, Key Lab UV Light Emitting Mat & Technol, Changchun 130024, Peoples R China

[3] NE Normal Univ, Dept Chem, Changchun 130024, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 44期

基金：

中国国家自然科学基金;

关键词：

CARBON NANOTUBES; TITANIUM-DIOXIDE; TIO2; MICROSTRUCTURE; TEMPERATURE; REDUCTION; CATALYSTS; SILVER; FILMS; GOLD;

D O I：

10.1039/c1jm12965a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Core/shell nanofibers of TiO2@carbon embedded by Ag nanoparticles (TiO2@C/Ag NFs) were fabricated by combining the electrospinning technique, the hydrothermal method and an in situ reduction approach. The results showed that a uniform graphite carbon layer of approximately 8 nm in thickness was formed around the electrospun TiO2 nanofiber and small Ag nanoparticles (Ag NPs) were dispersed well inside the carbon layer. And, the TiO2@C/Ag NFs had remarkable light absorption in the visible region. The photocatalytic studies revealed that the TiO2@C/Ag NFs exhibited enhanced photocatalytic efficiency of photodegradation of Rhodamine B (RB) and Methyl Orange (MO) compared with the pure TiO2 nanofibers, TiO2@carbon core/shell nanofibers and TiO2/Ag nanofibers under visible light irradiation, which might be attributed to the good light absorption capability and high separation efficiency of photogenerated electron-hole pairs based on the photosynergistic effect among the three components of TiO2, carbon and Ag. And, the TiO2@C/Ag NFs could be easily recycled due to their one-dimensional nanostructural property.

引用

页码：17746 / 17753

页数：8

共 52 条

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