title: Structural, optical, opto-thermal and thermal properties of ZnS-PVA nanofluids synthesized through a radiolytic approach.
abstract: This work describes a fast, clean and low-cost approach to synthesize ZnS-PVA nanofluids consisting of ZnS nanoparticles homogeneously distributed in a PVA solution. The ZnS nanoparticles were formed by the electrostatic force between zinc and sulfur ions induced by gamma irradiation at a dose range from 10 to 50 kGy. Several experimental characterizations were conducted to investigate the physical and chemical properties of the samples. Fourier transform infrared spectroscopy (FTIR) was used to determine the chemical structure and bonding conditions of the final products, transmission electron microscopy (TEM) for determining the shape morphology and average particle size, powder X-ray diffraction (XRD) for confirming the formation and crystalline structure of ZnS nanoparticles, UV-visible spectroscopy for measuring the electronic absorption characteristics, transient hot wire (THW) and photoacoustic measurements for measuring the thermal conductivity and thermal effusivity of the samples, from which, for the first time, the values of specific heat and thermal diffusivity of the samples were then calculated.
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, Selangor, Malaysia ; School of Chemistry, University of New South Wales, Sydney, NSW 2052, Australia.
authors.forename: Alireza
authors.initials: A
authors.lastname: Kharazmi
authors.affiliation: School of Materials Science and Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
authors.forename: Nastaran
authors.initials: N
authors.lastname: Faraji
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, Selangor, Malaysia.
authors.forename: Roslina
authors.initials: R
authors.lastname: Mat Hussin
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, Selangor, Malaysia.
authors.forename: Elias
authors.initials: E
authors.lastname: Saion
authors.affiliation: Department of Physics, Faculty of Science, University Putra Malaysia, Serdang 43400, Selangor, Malaysia.
authors.forename: W Mahmood Mat
authors.initials: WM
authors.lastname: Yunus
authors.affiliation: Department of Physics, Science Faculty, Shahr-e-Qods Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Kasra
authors.initials: K
authors.lastname: Behzad
keywords: Fourier transform infrared spectroscopy (FTIR); ZnS nanoparticles; specific heat; thermal conductivity; thermal effusivity