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Rapid charging of thermal energy storage materials through plasmonic heating.

Wang Z, Tao P, Liu Y, Xu H, Ye Q, Hu H, Song C, Chen Z, Shang W, Deng T - Sci Rep (2014)

Bottom Line: This work reports a facile approach for rapid and efficient charging of thermal energy storage materials by the instant and intense photothermal effect of uniformly distributed plasmonic nanoparticles.Upon illumination with both green laser light and sunlight, the prepared plasmonic nanocomposites with volumetric ppm level of filler concentration demonstrated a faster heating rate, a higher heating temperature and a larger heating area than the conventional thermal diffusion based approach.With controlled dispersion, we further demonstrated that the light-to-heat conversion and thermal storage properties of the plasmonic nanocomposites can be fine-tuned by engineering the composition of the nanocomposites.

View Article: PubMed Central - PubMed

Affiliation: 1] State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China [2].

ABSTRACT
Direct collection, conversion and storage of solar radiation as thermal energy are crucial to the efficient utilization of renewable solar energy and the reduction of global carbon footprint. This work reports a facile approach for rapid and efficient charging of thermal energy storage materials by the instant and intense photothermal effect of uniformly distributed plasmonic nanoparticles. Upon illumination with both green laser light and sunlight, the prepared plasmonic nanocomposites with volumetric ppm level of filler concentration demonstrated a faster heating rate, a higher heating temperature and a larger heating area than the conventional thermal diffusion based approach. With controlled dispersion, we further demonstrated that the light-to-heat conversion and thermal storage properties of the plasmonic nanocomposites can be fine-tuned by engineering the composition of the nanocomposites.

No MeSH data available.


Synthesis and characterization of Au NP loaded gel wax.(a) TEM image of the synthesized Au NPs; (b) Particle size distribution analyzed by ImageJ; (c) Photograph of neat gel wax and gel wax loaded with increasing loading concentrations of Au NPs from left to right: 6.06 × 10−4 vol% (gel wax-Au NP-1), 1.82 × 10−3 vol% (gel wax-Au NP-2), and 3.64 × 10−3 vol% (gel wax-Au NP-3). (The plasmonic composite was placed on top of transparent neat gel wax. The scale bar is 1 cm.); (d) UV-Vis spectra of neat gel wax and gel wax loaded with Au NPs.
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f2: Synthesis and characterization of Au NP loaded gel wax.(a) TEM image of the synthesized Au NPs; (b) Particle size distribution analyzed by ImageJ; (c) Photograph of neat gel wax and gel wax loaded with increasing loading concentrations of Au NPs from left to right: 6.06 × 10−4 vol% (gel wax-Au NP-1), 1.82 × 10−3 vol% (gel wax-Au NP-2), and 3.64 × 10−3 vol% (gel wax-Au NP-3). (The plasmonic composite was placed on top of transparent neat gel wax. The scale bar is 1 cm.); (d) UV-Vis spectra of neat gel wax and gel wax loaded with Au NPs.

Mentions: To achieve a homogeneous mixing with the gel wax matrix, spherical Au NPs were synthesized within the non-polar toluene solvent by using oleylamine as the stabilizing agent33. As shown by the TEM image and particle size distribution histogram in Fig. 2, nearly monodisperse Au NPs (with an average diameter of 10.5 ± 1.5 nm) were obtained. Owing to the effective surface protection of the long alkane chain of oleylamine, the synthesized Au NPs can be readily mixed with and dispersed into gel wax, which chemically is a mineral oil made up of alkanes with different chain lengths (C15 to C40) and thickened by styrene butadiene rubber (~10 wt%) according to manufacturer's specification (Shanghai Lida Industrial, Co., Ltd). As the loading concentration increases, the pink color of the composite becomes darker, but they still maintain a high optical transparency. UV-Vis spectra in Fig. 2d show the same absorption peak centered at 535 nm and the peak intensity increases linearly with the increasing concentration of the Au NPs. Both the high optical transparency and consistent plasmonic absorption peaks indicate a homogeneous dispersion of Au NPs within the gel wax matrix. Free of aggregation is crucial not only for the successful penetration of the incident light but also the effective excitation of plasmonic NPs.


Rapid charging of thermal energy storage materials through plasmonic heating.

Wang Z, Tao P, Liu Y, Xu H, Ye Q, Hu H, Song C, Chen Z, Shang W, Deng T - Sci Rep (2014)

Synthesis and characterization of Au NP loaded gel wax.(a) TEM image of the synthesized Au NPs; (b) Particle size distribution analyzed by ImageJ; (c) Photograph of neat gel wax and gel wax loaded with increasing loading concentrations of Au NPs from left to right: 6.06 × 10−4 vol% (gel wax-Au NP-1), 1.82 × 10−3 vol% (gel wax-Au NP-2), and 3.64 × 10−3 vol% (gel wax-Au NP-3). (The plasmonic composite was placed on top of transparent neat gel wax. The scale bar is 1 cm.); (d) UV-Vis spectra of neat gel wax and gel wax loaded with Au NPs.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4150109&req=5

f2: Synthesis and characterization of Au NP loaded gel wax.(a) TEM image of the synthesized Au NPs; (b) Particle size distribution analyzed by ImageJ; (c) Photograph of neat gel wax and gel wax loaded with increasing loading concentrations of Au NPs from left to right: 6.06 × 10−4 vol% (gel wax-Au NP-1), 1.82 × 10−3 vol% (gel wax-Au NP-2), and 3.64 × 10−3 vol% (gel wax-Au NP-3). (The plasmonic composite was placed on top of transparent neat gel wax. The scale bar is 1 cm.); (d) UV-Vis spectra of neat gel wax and gel wax loaded with Au NPs.
Mentions: To achieve a homogeneous mixing with the gel wax matrix, spherical Au NPs were synthesized within the non-polar toluene solvent by using oleylamine as the stabilizing agent33. As shown by the TEM image and particle size distribution histogram in Fig. 2, nearly monodisperse Au NPs (with an average diameter of 10.5 ± 1.5 nm) were obtained. Owing to the effective surface protection of the long alkane chain of oleylamine, the synthesized Au NPs can be readily mixed with and dispersed into gel wax, which chemically is a mineral oil made up of alkanes with different chain lengths (C15 to C40) and thickened by styrene butadiene rubber (~10 wt%) according to manufacturer's specification (Shanghai Lida Industrial, Co., Ltd). As the loading concentration increases, the pink color of the composite becomes darker, but they still maintain a high optical transparency. UV-Vis spectra in Fig. 2d show the same absorption peak centered at 535 nm and the peak intensity increases linearly with the increasing concentration of the Au NPs. Both the high optical transparency and consistent plasmonic absorption peaks indicate a homogeneous dispersion of Au NPs within the gel wax matrix. Free of aggregation is crucial not only for the successful penetration of the incident light but also the effective excitation of plasmonic NPs.

Bottom Line: This work reports a facile approach for rapid and efficient charging of thermal energy storage materials by the instant and intense photothermal effect of uniformly distributed plasmonic nanoparticles.Upon illumination with both green laser light and sunlight, the prepared plasmonic nanocomposites with volumetric ppm level of filler concentration demonstrated a faster heating rate, a higher heating temperature and a larger heating area than the conventional thermal diffusion based approach.With controlled dispersion, we further demonstrated that the light-to-heat conversion and thermal storage properties of the plasmonic nanocomposites can be fine-tuned by engineering the composition of the nanocomposites.

View Article: PubMed Central - PubMed

Affiliation: 1] State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China [2].

ABSTRACT
Direct collection, conversion and storage of solar radiation as thermal energy are crucial to the efficient utilization of renewable solar energy and the reduction of global carbon footprint. This work reports a facile approach for rapid and efficient charging of thermal energy storage materials by the instant and intense photothermal effect of uniformly distributed plasmonic nanoparticles. Upon illumination with both green laser light and sunlight, the prepared plasmonic nanocomposites with volumetric ppm level of filler concentration demonstrated a faster heating rate, a higher heating temperature and a larger heating area than the conventional thermal diffusion based approach. With controlled dispersion, we further demonstrated that the light-to-heat conversion and thermal storage properties of the plasmonic nanocomposites can be fine-tuned by engineering the composition of the nanocomposites.

No MeSH data available.