Journal of Physical & Chemical Research https://ojs.univ-bba.dz/index.php/jpcr <p>The Journal of Physical and Chemical Research is an english/french language peer–reviewed half yearly publication, open access journal, free of charges. The journal is edited by the Laboratory of Materials Physics, Radiation and Nanostructures (LPMRN), Faculty of Sciences and Technology, University of Mohamed El Bachir El Ibrahimi , Bordj-Bou-Arreridj, Algeria.</p> <p>It publishes regular research papers (articles) and short communications in physics and chemistry.</p> Laboratory of Materials Physics, Radiation and Nanostructures (LPMRN), Faculty of Sciences and Technology, University of Mohamed El Bachir El Ibrahimi Bordj-Bou-Arreridj, Algeria. en-US Journal of Physical & Chemical Research 2830-8085 Techno-economic analysis of a thermodynamic solar power plant based on molten salts in different sites in Algeria https://ojs.univ-bba.dz/index.php/jpcr/article/view/157 <p>The use of renewable energies is one of the solutions to reduce CO 2 in the<br>atmosphere and to satisfy our energy needs. Because, the exploitation of<br>fossil energies such as carbon, gas and oil are responsible for the<br>disruption of the climate system and the considerable increase of the<br>temperature during the year and especially during the summer season as<br>well as the atmospheric pollution.Algeria is one of the countries that is<br>committed to this strategy and policy. This study presents a numerical<br>simulation of a concentrated solar power plant with Fresnel mirror solar<br>concentrator and thermal storage system. This study is carried out in the<br>regions of Tamanrasset, Laghouat and Mascara. The SAM (System<br>Advisor Model) software was used to calculate the DNI (Direct Normal<br>Irradiation) of each region, the wind speed, the nominal and real LCOE<br>(Levelized Cost Of Electricity) and the annual water consumption of the<br>plant. The results of this simulation show that the Tamanrasset site is<br>better selected with the annual capacity factor (CF) was 47.2%, the annual<br>amount of water consumed is about 38709 m 3 . The nominal and real<br>(LCOE) are 14.57 ¢/kWh and 11.56 ¢/kWh, respectively.</p> <p>&nbsp;</p> <p>&nbsp;</p> Fatah BOUFOUDI Sofiane MIHOUB Salah ZOUAOUI Copyright (c) 2023 2023-12-01 2023-12-01 2 2 1 8 10.58452/jpcr.v2i2.157 Optimal design of solar energy-based hydrogen refueling station: a case study of Touggourt, Algeria https://ojs.univ-bba.dz/index.php/jpcr/article/view/158 <p>Carbon production is growing globally, with energy-related carbon<br>emissions accounting for two-thirds of global emissions. Generating<br>carbon-neutral hydrogen from renewable energy is a significant<br>achievement toward a circular economy in this industry. Hydrogen can<br>contribute to reducing gas emissions in the future decades, not just as a<br>potential technology for the future but as a successful technology already<br>being implemented globally. Hydrogen is required for the clean<br>transportation sector and multiple different industrial applications.<br>However, the high cost of clean hydrogen production reduces the rapid<br>development of renewable energy projects established on hydrogen<br>production. So, optimizing design is required to choose the optimum<br>solutions for clean hydrogen production. In this context, this short paper<br>aims to investigate a techno-economic optimization of a hydrogen<br>refueling station with a 262 kg/day capacity in Touggourt City, Algeria<br>(latitude of 33° 6.3&amp;#39; N and the longitude of 6° 4.0&amp;#39; E), based on<br>photovoltaic energy resources. The paper analyses the configuration of a</p> <p>stand-alone PV system with batteries. The analysis of this arrangement is<br>based on the solar potential at the site, costs of various equipment,<br>electrical load, and hydrogen load. Thus, the study aims to identify the<br>optimized capacity of PV arrays, electrolyzers, batteries, power<br>converters, and hydrogen tanks.</p> <p>&nbsp;</p> <p>&nbsp;</p> Ahmed Zouhir Kouache Ahmed Djafour Khaled Mohammed Said Benzaoui Souheil Touili Madjida Ramdani Copyright (c) 2023 2023-12-01 2023-12-01 2 2 9 17 10.58452/jpcr.v2i2.158 Evolution with temperature of point defects concentration in Fe2ZrX ( X=V, Y, Tc, Ru ): DFT and Wagner-Schottky modeling https://ojs.univ-bba.dz/index.php/jpcr/article/view/160 <p>The evolution with temperature of the point defect concentration in the<br>cubic C15-ZrFe 2 Laves phase was investigated in the presence of several<br>ternary additions X (X=V, Y, Tc, Ru). The heats of formation of the<br>different point defects were carried out at 0K by means of DFT<br>calculations. The Wagner-Schottky Model, based on substitutional and<br>interstitial sublattices configuration within the canonical ensemble, was<br>applied to investigate temperature effects on the defect concentration. The<br>main results show a strong dependency of the C15-Fe 2 Zr stability on the<br>point defect type. Energetically, the Ru Fe antisite is the most stable defect<br>at low temperatures (0 K),&nbsp;whereas the Va Fe , Va Zr ,&nbsp;and Y Fe are the least<br>stable ones. At&nbsp;finite temperatures, it was found that antisites are the<br>dominant constitutional defects on both sides of stoichiometry in the C15-<br>ZrFe 2 compound.</p> <p>&nbsp;</p> <p>&nbsp;</p> Lyacine Rabahi Leila Rouaiguia Abdelhafid Kellou Copyright (c) 2023 2023-12-01 2023-12-01 2 2 18 28 10.58452/jpcr.v2i2.160 Contribution à l&#39;étude du nettoyage des panneaux photovoltaïques par procédé électrostatique https://ojs.univ-bba.dz/index.php/jpcr/article/view/161 <p>Le but de cette étude est d&amp;#39;examiner l&amp;#39;utilisation d&amp;#39;un vent électrique<br>généré par une décharge couronne à deux électrodes pour nettoyer les<br>panneaux photovoltaïques de la poussière. La première électrode est un fil<br>alimenté par la haute tension continue négative allant jusqu&amp;#39;à 30 kV,<br>tandis que la seconde est reliée à la terre. Le dispositif permet de générer<br>un vent ionique et se déplacer sur toute la surface du panneau en nettoyant<br>la poussière. L&amp;#39;alimentation de l&amp;#39;actionneur de nettoyage à décharge<br>couronne est assurée par la cellule photovoltaïque elle-même, et le<br>nettoyage électrostatique par décharge couronne peut atteindre un taux de<br>nettoyage de 90 % et améliorer l&amp;#39;efficacité des panneaux photovoltaïques.<br>Cette technologie offre l&amp;#39;avantage d&amp;#39;un nettoyage à sec par des<br>phénomènes électrostatiques et à tout moment, avec une faible<br>consommation d&amp;#39;énergie, le courant étant pratiquement nul, de l&amp;#39;ordre des<br>micro-ampères.</p> <p>&nbsp;</p> <p>&nbsp;</p> Zeid Bendaoudi Nezha Kadous Khelifa Yanallah Yassine Bellebna Amar Tilmatine Copyright (c) 2023 2023-12-01 2023-12-01 2 2 29 34 10.58452/jpcr.v2i2.161 Acoustic characterization of superconductor material Pr123 https://ojs.univ-bba.dz/index.php/jpcr/article/view/162 <p>Our study consisted in the characterization of the superconducting<br>material Pr123 using the acoustic method and the non destructive testing<br>(NDT). Our work was performed at high working frequency of 600MHz.<br>We studied the superconducting bulk system with the use of a coupling<br>fluid to obtain propagation modes. The determination of these modes<br>according to the Brekhovskikh model and the modeling of the reflection<br>coefficient R(θ) and the acoustic signature V(z), allows us to determine<br>the moduli of elasticity of the studied superconducting material: Young’s<br>modulus (E) and shear modulus (G) in order to determine the critical<br>angles: longitudinal (θ L ), transverse (θ T ) and Rayleigh critical angle (θ R )<br>which correspond respectively to the longitudinal acoustic wave, the<br>transverse acoustic wave and the Rayleigh acoustic wave propagating in<br>the superconducting material Pr123.</p> <p>&nbsp;</p> <p>&nbsp;</p> N. Sayoud. Copyright (c) 2023 2023-12-01 2023-12-01 2 2 35 40 10.58452/jpcr.v2i2.162 DFT study of the electronic and optical properties of ternary alkali metal tetrafluoridobromates materials ABrF 4 (A=Na, K and Rb) https://ojs.univ-bba.dz/index.php/jpcr/article/view/165 <p>This work deals with a theoretical investigation of structural, electronic,<br>and optical properties of alkali metal tetrafluoridobromates materials that<br>crystallize in tetragonal structure (NaBrF 4 , KBrF 4 , and RbBrF 4 ) using the<br>Density Functional Theory (DFT) within the pseudo-potential plane-wave<br>approach as implemented in Cambridge Serial Total Energy Package<br>(CASTEP) code. The structural parameters are in good agreement<br>compared to the experimental values stated in the literature. The<br>calculated electronic properties indicate that these ternary compounds are<br>wide bandgap semiconductor materials. NaBrF 4 is a semiconductor<br>compound with a direct band gap, whereas, KBrF 4 and RbBrF 4 are<br>semiconductors compounds together with an indirect band gap. The main<br>optical parameters are studied in detail. The large optical absorption range<br>in the ultraviolet (UV) region suggests that these semiconductor materials<br>could be helpful for specific implementations in UV optoelectronic<br>devices; therefore, this theoretical investigation is probable to motivate<br>future experimental works.</p> <p>&nbsp;</p> <p>&nbsp;</p> Ishak Mebarkia Copyright (c) 2023 2023-12-01 2023-12-01 2 2 41 49 10.58452/jpcr.v2i2.165 L 1 sub-shell fluorescence yield for lanthanide elements with 58≤ Z≤ 71 https://ojs.univ-bba.dz/index.php/jpcr/article/view/168 <p>The lanthanides comprise the largest naturally occurring group in the<br>periodic table, the &amp;quot;rare earth elements&amp;quot; which group the fourteen<br>elements from 58Ce to 71Lu, which are also electropositive and<br>reactive metals, except for yttrium. The researchers used these<br>elements and calculated the yield of fluorescence (ω L1 ) by theoretical,<br>experimental and analytical methods due to the large number of their<br>applications in various fields of physical chemistry and medical</p> <p>research. In the present work, all the experimental L 1 sub-shell<br>fluorescence yields taken from distinctive sources are studied. A<br>detailed analysis of these data, and a table with weighted average values<br>(ω L1W ) of these parameters are presented. New recommended values (ω WR ) are<br>obtained dividing the experimental ratios (ω exp ) by the weighted ratios<br>(ω W ) and removing out-of-range values (less than 0.8 or greater than<br>1.2). At that point, new values of average fluorescence yields were<br>deduced using an interpolation that involves the well-known analytical<br>function as function of the atomic number Z, and then semi-empirical<br>data were deduced by fitting the ratio , for the three shells. A<br>comparison was made with other theoretical, experimental, and<br>empirical values reported in the literature. An evident correlation was<br>observed between our result and other works.</p> <p>&nbsp;</p> Kaouthar Meddouh A. Kahoul S. Daoudi J.M. Sampaio J.P. Marques F. Parente A. Hamidani N.Kup Aylikci V. Aylikci Y. Kasri Copyright (c) 2023 2023-12-01 2023-12-01 2 2 50 56 10.58452/jpcr.v2i2.168 Agricultural Applications of Nanocomposites Superabsorbent Polymers: A Review https://ojs.univ-bba.dz/index.php/jpcr/article/view/166 <p>A superabsorbent polymer (SAP) can absorb large quantities of water. Hydrophilic materials are<br>known as superabsorbent materials because they can absorb large amounts of aqueous fluid and<br>desorb it under stress. One of the most critical parameters that limit the usefulness of SAP is its<br>absorption capacity. Superabsorbent polymers can be used for water management and to renew<br>arid and desert environments. This review demonstrates that superabsorbent materials can be<br>beneficial to agriculture and the environment by reducing irrigation water consumption,<br>improving fertilizer retention time in soil, decreasing plant mortality, and increasing plant<br>growth. Nanotechnology could play a role in preparing superabsorbent nanocomposite materials<br>by employing superabsorbent polymers. This article introduces superabsorbent/clay<br>nanocomposites and the mechanochemical synthesis approach which are convenient and useful<br>types of superabsorbent nanocomposites.</p> <p>&nbsp;</p> <p>&nbsp;</p> Mohammad Alrbaihat Copyright (c) 2023 2023-12-01 2023-12-01 2 2 57 71 10.58452/jpcr.v2i2.166 Thermal/optical study and characterization of a MCP doped with In2O3 and AlCl3 for solar use https://ojs.univ-bba.dz/index.php/jpcr/article/view/167 <p>Thermal insulation is one of the major problems of building comfort. One<br>of the solutions proposed is the use of the latent heat of phase change<br>materials to evacuate the external heat in order to keep it at an adequate<br>temperature in the chamber. In this work, we use the latent heat of a MCP<br>type C 25 H 52 pure and doped with two types of dopant In 2 O 3 and AlCl 3 for<br>the climatic application. We study the effect of dopant nature and doping<br>rate on phase change time, latent heat and mass loss. To improve this time<br>we doped our material with In 2 O 3 , and AlCl 3 . The study consists in<br>monitoring the evolution of the phase change time, the flow of the latent<br>heat and the loss of the mass according to the nature of the dopant and the<br>doping rate. A study of the DSC, ATG, FTIR and PL characterization is<br>presented. The study showed that the best dopant for solar insulation is<br>AlCl 3 doping.</p> <p>&nbsp;</p> <p>&nbsp;</p> Lyes Maifi Kamel Agroui Ouided Hioual Chari Abdelhamid Copyright (c) 2023 2023-12-01 2023-12-01 2 2 72 80 10.58452/jpcr.v2i2.167