TY - JOUR
T1 - The mechanism of enhanced photothermal conversion of low-dimensional plasmonic nanofluids with LFPs resonance
AU - Yang, Rui
AU - Li, Xiaoke
AU - Yin, Fei
AU - Shi, Jinwen
AU - Jing, Dengwei
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2023/7
Y1 - 2023/7
N2 - Solar-thermal utilization is one of the important ways of energy utilization at present and in the future. Nanofluids play a key role in photothermal conversion. In this work, the low-dimensional plasmonic TiN/MWCNTs nanofluids were firstly proposed. The photothermal conversion properties of low-dimensional plasmonic nanofluids was systematically investigated. The analytical results indicated that the heat transfer and optical properties of plasmonic nanofluids were significantly enhanced. Specifically, thanks to the expanded light absorption by the LSPR of nano-TiN and the enhanced thermal transport by its low-frequency phonon (LFP) resonance with MWCNTs, the photothermal conversion efficiency can reach 68.1% with 10 ppm TiN/MWCNTs nanofluids, which was 22.9% higher than that of the MWCNTs nanofluids. And the photothermal conversion efficiency of TiN/MWCNTs nanofluids (40 ppm) reached 76.4%. Furthermore, through the simulation and experimental results, this paper explained the mechanism of the enhanced solar-thermal conversion performance of nanofluids from the perspective of phonon heat transfer.
AB - Solar-thermal utilization is one of the important ways of energy utilization at present and in the future. Nanofluids play a key role in photothermal conversion. In this work, the low-dimensional plasmonic TiN/MWCNTs nanofluids were firstly proposed. The photothermal conversion properties of low-dimensional plasmonic nanofluids was systematically investigated. The analytical results indicated that the heat transfer and optical properties of plasmonic nanofluids were significantly enhanced. Specifically, thanks to the expanded light absorption by the LSPR of nano-TiN and the enhanced thermal transport by its low-frequency phonon (LFP) resonance with MWCNTs, the photothermal conversion efficiency can reach 68.1% with 10 ppm TiN/MWCNTs nanofluids, which was 22.9% higher than that of the MWCNTs nanofluids. And the photothermal conversion efficiency of TiN/MWCNTs nanofluids (40 ppm) reached 76.4%. Furthermore, through the simulation and experimental results, this paper explained the mechanism of the enhanced solar-thermal conversion performance of nanofluids from the perspective of phonon heat transfer.
KW - Low-dimensional materials
KW - Low-frequency phonon resonance
KW - Photothermal conversion
KW - Plasmonic nanofluids
UR - https://www.scopus.com/pages/publications/85149843212
U2 - 10.1016/j.ijheatmasstransfer.2023.124056
DO - 10.1016/j.ijheatmasstransfer.2023.124056
M3 - 文章
AN - SCOPUS:85149843212
SN - 0017-9310
VL - 208
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
M1 - 124056
ER -