Synthesis of Fe3O4 nanowire@CeO2/Ag nanocomposites with enhanced photocatalytic activity under sunlight exposure

被引：30

作者：

Chang, Jiali ^{[1
]}

Ma, Qingliang ^{[2
]}

Ma, Jianchao ^{[3
]}

Ma, Hongzhu ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Sch Chem & Chem Engn, Xian 710119, Shaanxi, Peoples R China

[2] Taiyuan Univ Technol, Minist Educ & Shanxi Prov, Key Lab Coal Sci & Technol, Taiyuan 030024, Shanxi, Peoples R China

[3] Taiyuan Univ Technol, Coll Min Technol, Taiyuan 030024, Shanxi, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2016年 / 42卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Fe3O4 nanowire@CeO2/Ag; Photocatalysis; Sunlight; Surface plasmon resonance; Magnetic separation; HIGHLY EFFICIENT; RECENT PROGRESS; METHYLENE-BLUE; CEO2; NANOSTRUCTURES; DEGRADATION; NANOPARTICLES; COMPOSITES; REDUCTION; PERFORMANCE;

D O I：

10.1016/j.ceramint.2016.04.104

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ternary magnetic Fe3O4 nanowire@CeO2/Ag nanocomposites have been firstly synthesized by means of hydrothermal and co-precipitation techniques, and their ability to adsorb, photocatalytic degradation organic pollutants, methylene blue present in water, and separate, has been demonstrated. The results show that CeO2 and Ag nanoparticles are uniformly deposited on the surface of Fe3O4 nanowires. The photocatalytic experiments demonstrate that the Fe3O4@CeO2/Ag nanocomposites exhibit remarkably enhanced photocatalytic properties and stability compared to CeO2, CeO2/Ag, Fev@CeO2, Fe3O4 under natural sunlight exposure. Moreover, excellent photocatalytic degradation efficiency for phenol and MO are also observed. The enhanced photocatalytic performance may be attributed to the synergetic effect of Fe3O4 nanowire, CeO2 and Ag nanoparticles, which lead to the enhanced light harvesting, the promoted charge separation and enhanced adsorption capacity. In addition, the Fe3O4@CeO2/Ag photocatalyst can be easily collected and separated by an external magnet. These results suggest that the nanocomposites could be exploited as potential candidates for solar photocatalysis. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：11827 / 11837

页数：11

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