ZrC–Au core-shell nanoparticles for efficient solar photothermal conversion

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2024-06-03 DOI:10.1016/j.ijthermalsci.2024.109175

Qihang Yang , Caiyan Qin , Ning Chen , Haotuo Liu , Bin Zhang , Xiaohu Wu

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引用次数: 0

Abstract

Nanoparticles (NPs) have attracted much attention recently because of their excellent photothermal properties. In particular, nanofluids (NFs) based on core-shell plasmon NPs have become the key to solar thermal utilization. This work proposed an ZrC–Au core-shell NP suitable for direct absorption solar collectors (DASCs). The optical properties of ZrC–Au core-shell NP are investigated based on the finite element method (FEM). The physical mechanism of its existence can be explained by the surface plasmon resonance and localized surface plasmon resonance of ZrC–Au core-shell NP. Meanwhile, the effect of core-shell size on the NP optical properties of ZrC–Au core-shell is investigated based on electromagnetic field distribution. In addition, the effects of length (H) and mass flow (ṁ) on the temperature rise and efficiency of the collector (η) are analyzed with DASC 2D simulation. Research shows that ZrC–Au core-shell NPs with t = 5 nm and r₃ = 15 nm can effectively broaden the solar spectral absorption band, increase the absorption peak value, and the photothermal conversion efficiency (f_v = 20 ppm, h = 15 mm) reaches 96 %, which is 15.89 % higher than Au NP. Meanwhile, the η of ZrC–Au NPs can be improved by ∼8.86 % compared with Au NPs under specific parameters (H = 2 cm, L = 20 cm, f_v = 20 ppm, ṁ = 1 g/(s m)). Combined with the preparation possibility and economy of ZrC–Au core-shell NPs, the broad application prospect of this NP in DASC and other photothermal fields was analyzed.

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用于高效太阳能光热转换的 ZrC-Au 核壳纳米粒子

纳米粒子（NPs）因其卓越的光热特性而备受关注。尤其是基于核壳等离子体纳米粒子的纳米流体（NFs）已成为太阳能热利用的关键。本研究提出了一种适用于直接吸收太阳能集热器（DASC）的 ZrC-Au 核壳 NP。基于有限元法（FEM）研究了 ZrC-Au 核壳 NP 的光学特性。其存在的物理机制可以用 ZrC-Au 核壳 NP 的表面等离子体共振和局部表面等离子体共振来解释。同时，基于电磁场分布研究了核壳尺寸对 ZrC-Au 核壳 NP 光学特性的影响。此外，还利用 DASC 二维模拟分析了长度（H）和质量流量（ṁ）对集热器温升和效率（η）的影响。研究表明，t = 5 nm、r3 = 15 nm的ZrC-Au核壳氮化物能有效拓宽太阳光谱吸收带，提高吸收峰值，光热转换效率（fv = 20 ppm，h = 15 mm）达到96%，比Au氮化物高15.89%。同时，在特定参数（H = 2 cm，L = 20 cm，fv = 20 ppm，ṁ = 1 g/(s m)）下，ZrC-Au NPs 的η值比 Au NPs 提高了 ∼8.86 %。结合 ZrC-Au 核壳 NPs 的制备可能性和经济性，分析了该 NPs 在 DASC 和其他光热领域的广阔应用前景。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.