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超声时间和表面活性剂对用于光谱选择性应用的 CuO、FeO 和 CNTs/水纳米流体的稳定性和光学性质的影响。

Impacts of ultrasonication time and surfactants on stability and optical properties of CuO, FeO and CNTs/water nanofluids for spectrum selective applications.

机构信息

Division of Sustainable Development (DSD), College of Science and Engineering (CSE), Hamad Bin Khalifa University (HBKU), Qatar Foundation (QF), Education City, Doha, Qatar.

Division of Sustainable Development (DSD), College of Science and Engineering (CSE), Hamad Bin Khalifa University (HBKU), Qatar Foundation (QF), Education City, Doha, Qatar.

出版信息

Ultrason Sonochem. 2022 Aug;88:106079. doi: 10.1016/j.ultsonch.2022.106079. Epub 2022 Jun 22.

DOI:10.1016/j.ultsonch.2022.106079
PMID:35763944
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9240367/
Abstract

The prime objective of the present experimental work is to evaluate the impact of ultrasonication time and surfactants on the optical characteristics (transmittance and absorbance) and stability of CuO/water, CNTs/water, and FeO/water nanofluids to be used in spectrum selective applications. Two-step method with various ultrasonication times (30 min, 60 min, and 90 min) was employed to prepare nanofluids (having volume fractions of 0.004 % and 0.0004 %). Furthermore, various surfactants (anionic, cationic, and polymer) were added to the base fluid. The study results revealed that surfactants have a significant effect on the stability of nanofluids over ultrasonication time. The nanofluids prepared using sodium dodecylbenzene sulfonate (SDBS) have the highest zeta potential values than other surfactants used in the experimentation. The increase in transmittance of nanofluid was more prominent for lower concentration (0.0004 %) after one week of preparation. The concentration of nanoparticles, ultrasonication time, temperature, and surfactants influenced the optical characteristics of nanofluids. The most stabled CNTs nanofluid with 0.004 % concentration and 90 min of ultrasonication obtained an average of 67.6 % and 74.6 % higher absorbance than stabled CuO and FeO nanofluids, respectively. The irradiance transmitted through nanofluid was strongly dependent on the concentration and type of nanoparticles.

摘要

本实验工作的主要目的是评估超声时间和表面活性剂对 CuO/水、CNTs/水和 FeO/水纳米流体的光学特性（透射率和吸光度）和稳定性的影响，这些纳米流体将用于光谱选择性应用。采用两步法，用不同的超声时间（30min、60min 和 90min）制备纳米流体（体积分数为 0.004%和 0.0004%）。此外，还向基液中添加了各种表面活性剂（阴离子、阳离子和聚合物）。研究结果表明，表面活性剂对纳米流体在超声时间下的稳定性有显著影响。用十二烷基苯磺酸钠（SDBS）制备的纳米流体的zeta 电位值比实验中使用的其他表面活性剂都高。制备一周后，较低浓度（0.0004%）的纳米流体的透光率增加更为明显。纳米粒子的浓度、超声时间、温度和表面活性剂影响纳米流体的光学特性。在浓度为 0.004%、超声时间为 90min 的条件下，最稳定的 CNTs 纳米流体的平均吸光度比最稳定的 CuO 和 FeO 纳米流体分别高出 67.6%和 74.6%。纳米流体透过的辐照度强烈依赖于纳米粒子的浓度和类型。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/5d65ed2b6562/gr21.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/2d51bf75b519/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/12125f50ca38/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/8b165164a1cc/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/242dbc48ae39/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/81c5bd8f1ff7/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/74082b9c9eb6/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/8ae4b739df73/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/75847b31ac1b/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/f16792e2f128/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/9f6d175a511c/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/b1cce3240516/gr11.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/c4e7a2c1b850/gr12.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/d2fafdf98b72/gr13.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/f7746408a3a2/gr14.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/15709e578949/gr15.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/fb8c9a830f55/gr16.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/ef73e5121a4b/gr17.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/fb9bd60afe80/gr18.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/a02f02b34e6c/gr19.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/8adf6dbb5077/gr20.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9bac/9240367/5d65ed2b6562/gr21.jpg

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