Photothermal conversion characteristics of gold nanoparticles under different filter conditions. (15th December 2017)

• Record Type: Journal Article
• Authors: Zhang, H.; Yang, H.; Chen, H.J.; Du, X.; Wen, D.; Wu, H.
• Is Part Of: Energy. Volume 141(2017)
• Page Start: 32
• Page End: 39
• Publication Date: 2017-12-15
• Subjects: Plasmonic nanoparticles -- Wavelength spectrum -- Photo-thermal conversion efficiency -- Light filter; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2017.09.059
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: In this article, plasmonic nanopaerticles (PNP) were used to improve the solar thermal conversion efficiency and the abortion prosperity under eight different wavelength spectrum was compared. Gold nanoparticles (GNP) is synthesized through an improved citrate-reduction method, which was used to illustrate the photo-thermal conversion of PNPs under a solar simulator with eight filters. Experimental results showed that the best light intensities at wavelength of 710 nm could reach 0.004 W/cm 2 when applied to two suns. With the increase of the irradiation time, the GNP temperature increased linearly and the temperature could be increased by 3.5 K within 300 s. In addition, there were no infrared, no visible light, and no UV filters utilized to compare GNP photothermal conversion efficiencies in three main spectrum regions. As eight filters were applied in the current experiment, more specified wavelength spectrum and longer time need to be tested for the purpose of optimisation. Highlights: Photothermal conversion characteristics at a single wavelength is studied. Photothermal conversion characteristics at waveband of sunlight is investigated. GNPs achieves the best photothermal conversion efficiencies at 710–1064 nm. Both visible light and infrared waveband demonstrate ideal temperature rise.