Pluronic F127 stabilized ZnO nanofluid; Investigation of the dispersion stability and thermal conductivity

Khademi, Ali; Amirimajed, Amirhosein; Samadzadeh, Ali

doi:10.61186/CNJ.2.2.321

Pluronic F127 stabilized ZnO nanofluid; Investigation of the dispersion stability and thermal conductivity

Document Type : Original Article

Authors

Ali Khademi ¹

Amirhosein Amirimajed ²

Ali Samadzadeh ³

¹ Department of Chemistry, College of Science, University of Tehran, Tehran 14155-6455, Iran

² Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, Tehran, Iran

³ Department of Chemistry, Shahid Bahonar University, Kerman, Iran

10.61186/CNJ.2.2.321

Abstract

Nanofluids are suspensions consisting of solid nanoparticles in sizes less than 100 nm and can be used in many research fields. The current research work concentrated on two sections. (1) This part mainly studies the preparation and characterization and colloidal stability of surface modified ZnO nanoparticles disbanded water (ZnO/water) nanofluid (2) estimating thermal conductivity, which was essential for many industrial applications. To study the stability of the F127 stabilized ZnO nanofluid, DLS and zeta potential analysis were used. The polydispersity index, as determined by DLS analysis, is 0.322, and the number-averaged particle size is 110 nm. To achieve this, the dispersant was used for homogeneous solution and the zeta potential value for stabilized ZnO nanofluids in the presence of dispersant was 10.18 mV. The effect of dispersant and temperature on the thermal conductivity of nanofluids was examined. Based on the obtained results, a significant increase in fluid conductivity was observed that had a nonlinear relationship with the volume fraction and an optimized dispersant concentration at 1.5 vol% showed the maximum enhancement of thermal conductivity. The influence of temperature on the thermal conductivity of ZnO stabilized nanofluids was analyzed and compared with ZnO nanofluids.

Keywords

Nanofluid

ZnO

Pluronic F127

Stability

Thermal conductivity

[1] M. Rafati, A. Hamidi, M.S. Niaser, Application of nanofluids in computer cooling systems (heat transfer
performance of nanofluids). Appl. Therm. Eng. 45 (2012) 45-46, 9–14.
https://doi.org/10.1016/j.applthermaleng.2012.03.028
[2] S. Bashir, M. Ramzan, J.D. Chung, Y.-M. Chu, S. Kadry, Analyzing the impact of induced magnetic flux and
Fourier’s and Fick’s theories on the Carreau-Yasuda nanofluid flow. Sci. Rep. 11 (2021) 1–18.
https://doi.org/10.1038/s41598-021-87831-6.
[3] G. Ramesh, J. Madhukesh, N.A. Shah, S.-J. Yook, Flow of hybrid CNTs past a rotating sphere subjected to
thermal radiation and thermophoretic particle deposition. Alexandria Eng. J. 64 (2022) 969
997. https://doi.org/10.1016/j.aej.2022.09.026
[4] S.U. Choi, J.A. Eastman, Enhancing Thermal Conductivity of Fluids with Nanoparticles; No. ANL/MSD/CP84938, CONF-951135-29; Argonne National Lab.: Chicago, IL, USA, 1995.
[5] M. Hussain, M.A. Ansari, F.A. Mir, Preparation, characterization and cooling performance of ZnO based
Nanofluids. Discov. Appl. Sci., 6, (2024) 92. https://doi.org/10.1007/s42452-024-05705-8
[6] K.S. Pavithra, V. Parol, A. Brusly Solomon, M.P. Yashoda, Investigation of thermal conductivity and thermal
performance of heat pipes by structurally designed copolymer stabilized ZnO nanofluid. Sci. Rep., 13(1) (2023)
14219. https://doi.org/10.1038/s41598-023-39598-1
[7] A. Salabat, F. Mirhoseini, A novel and simple microemulsion method for synthesis of biocompatible
functionalized gold nanoparticles, J. Mol. Liq. 268 (2018) 849–853. https://doi.org/10.1016/j.molliq.2018.07.112
[8] H.U. Rasheed, W. Khan, I. Khan, N. Alshammari, N. Hamadneh, Numerical computation of 3D Brownian
motion of thin film nanofluid flow of convective heat transfer over a stretchable rotating surface. Sci. Rep. 12
(2022) 1–14. https://doi.org/10.1038/s41598-022-06622-9
[9] K.A. Kumar, V. Sugunamma, N. Sandeep, S. Sivaiah, Physical aspects on MHD micropolar fluid flow past an
exponentially stretching curved surface. Defect Diffus. Forum. 401 (2020) 79–91.
https://doi.org/10.4028/www.scientific.net/DDF.401.79
[10] M. Amjad, I. Ahmed, K. Ahmed, M.S. Alqarni, T. Akbar, T. Muhammad, Numerical Solution of Magnetized
Williamson Nanofluid Flow over an Exponentially Stretching Permeable Surface with Temperature Dependent
Viscosity and Thermal Conductivity. Nanomaterials 12 (2022) 3661. https://doi.org/10.3390/nano12203661
[11] K. Ahmed, L.B. McCash, T. Akbar, S. Nadeem, S. Effective similarity variables for the computations of
MHD flow of Williamson nanofluid over a non-linear stretching surface. Processes 10 (2022) 1119.
https://doi.org/10.3390/pr10061119
[12] K. Leong, C. Yang, and S. M. S. Murshed: A Model for the thermal conductivity of nanofluids-the effect of
interfacial layer, J. Nanoparticle Res., 8 (2006) 245– 254.