Investigation of optical properties and radiative transfer of sea water-based nanofluids for photocatalysis with different salt concentrations
Investigation of optical properties and radiative transfer of sea water-based nanofluids for photocatalysis with different salt concentrations
复制标题
不同盐浓度光催化海水基纳米流体的光学性质和辐射传输研究
DOI：
10.1016/j.ijhydene.2017.09.044
复制
发表时间：
2017-10-26
影响因子：
7.2
通讯作者：
Bai Fengwu
中科院分区：
文献类型：
--
作者：
Cheng Ziming;Wang Fuqiang;Bai Fengwu
光催化分解海水是解决未来能源危机的有效途径。然而，海水对光催化制氢效率的影响存在很大争议。本文将催化剂颗粒分为大颗粒（x >1）和小颗粒（x < 1）。采用Mie理论结合蒙特卡罗方法分析了海水对海水基纳米流体中辐射传递的影响。计算了基质流体（淡水和海水）的光学常数对TiO2纳米流体的光谱消光和透射率的影响。结果表明，对于小颗粒（x < 1）的海水基纳米流体，随着盐浓度的增加，光谱消光系数增大，光谱透过率降低；对于大颗粒（x > 1）的海水基纳米流体，由于衍射峰的存在，光谱消光系数和透射率发生振荡。(c) 2017年Hydrogen Energy Publications LLC.由Elsevier Ltd出版。版权所有。
Photocatalytic decomposition of sea water is an effective way to solve the future energy crisis. However, there is a great deal of controversy about seawater's effect on photo catalytic hydrogen production efficiency. In this paper, the catalyst particles are divided into large particles (x >1) and small particles (x < 1). The Mie theory combined with Monte Carlo method are used to analyze the influence of sea water on radiative transfer in the sea water-based nanofluids. The effects of the optical constants of the base fluid (fresh water and sea water) on the spectral extinction and spectral transmittance of the TiO2 nanofluids are calculated. Results indicate that, for sea water-based nanofluids with small particles (x < 1), the spectral extinction coefficient increases and spectral transmittance decreases with salt concentration increasing. For sea water-based nanofluids with large particles (x > 1), the spectral extinction coefficient and transmittance oscillate because of diffraction peaks. (c) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.