Enhancement of solar energy absorption using a plasmonic nanofluid based on TiO2/Ag composite nanoparticles

被引：204
作者：
Xuan, Yimin [1 ,2 ]
Duan, Huiling [2 ]
Li, Qiang [2 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Sch Energy & Power Engn, Nanjing 210016, Jiangsu, Peoples R China
[2] Nanjing Univ Sci & Technol, Sch Energy & Power Engn, Nanjing 210094, Jiangsu, Peoples R China
来源：
RSC ADVANCES | 2014年 / 4卷 / 31期
基金：
中国国家自然科学基金;
关键词：
PHOTOCATALYTIC HYDROGEN-PRODUCTION; OPTICAL-PROPERTIES; METAL NANOPARTICLES; SHAPE;
D O I：
10.1039/c4ra00630e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Combined with the solar irradiation spectrum, the optical properties of both TiO2/Ag composite nanoparticles and water-based nanofluids composed of different nanoparticles are studied. The solar energy absorption features are compared among these nanofluids based on TiO2, Ag and TiO2/Ag composite nanoparticles. Due to the localized surface plasmon resonance ( LSPR) effect excited on the Ag surface, the optical absorption of TiO2/Ag plasmonic nanofluid is remarkably enhanced. The enhanced absorption by LSPR excitation is introduced in solar thermal conversion. The photothermal experiments of different nanofluids conducted under the same conditions reveal that TiO2/Ag plasmonic nanofluid exhibits a higher temperature compared with that of TiO2 based nanofluid. Although the temperatures of Ag nanofluid and TiO2/Ag nanofluid are the same, the cost of TiO2/Ag based nanofluid is much lower. The effect of nanoparticle concentration on the photothermal performance of TiO2/Ag plasmonic nanofluid is also studied in this paper.
引用
收藏
页码：16206 / 16213
页数：8
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