Pub Date : 2026-04-01Epub Date: 2026-01-22DOI: 10.1016/j.nxmate.2026.101597
Peverga Rex Jubu , Mohammed Kakasur Omar , Suleman Kazim Omotayo , Mohd Zamir Pakhuruddin
Solar cells based on InGaN semiconducting materials are gaining increasing interest in recent times due to their wide bandgap range of 0.65–3.42 eV for optical absorption in the large portion of the solar spectrum. This study performs a numerical simulation using SCAPS-1D program to investigate the influence of layer thickness and carrier concentration on the electrical parameters of p-In0.35Ga0.65N/p-In0.75Ga0.25N/n-In0.6Ga0.4N (PPN) InGaN homojunction solar cell. The optimized PPN structure demonstrated high power conversion efficiency (PCE) of 33.93 % at 300 K compared to its PN (20.44 %) due to the presence of a thin (0.01 m) top p-layer, which mitigated surface recombination and boosted charge collection. The VOC, JSC and FF of the optimized PPN were found to be 0.94 V, 42.79 mA/cm2, and 84.60 %, respectively. The PCE of the optimized PN and PPN device decreased as (33.93–21.97 %) and (26.46–7.51 %), respectively, with rising temperature (250–500 K). The PPN structure delivered satisfactory performance all temperatures, making it suitable even for elevated temperature applications. The PCE of the PPN device under standard ambient conditions agrees with the Shockley-Queisser efficiency limit for single-junction solar cells.
{"title":"Numerical simulation on electrical characteristics of high efficiency PPN homojunction InGaN photovoltaic solar cell","authors":"Peverga Rex Jubu , Mohammed Kakasur Omar , Suleman Kazim Omotayo , Mohd Zamir Pakhuruddin","doi":"10.1016/j.nxmate.2026.101597","DOIUrl":"10.1016/j.nxmate.2026.101597","url":null,"abstract":"<div><div>Solar cells based on InGaN semiconducting materials are gaining increasing interest in recent times due to their wide bandgap range of 0.65–3.42 eV for optical absorption in the large portion of the solar spectrum. This study performs a numerical simulation using SCAPS-1D program to investigate the influence of layer thickness and carrier concentration on the electrical parameters of p-In<sub>0.35</sub>Ga<sub>0.65</sub>N/p-In<sub>0.75</sub>Ga<sub>0.25</sub>N/n-In<sub>0.6</sub>Ga<sub>0.4</sub>N (PPN) InGaN homojunction solar cell. The optimized PPN structure demonstrated high power conversion efficiency (PCE) of 33.93 % at 300 K compared to its PN (20.44 %) due to the presence of a thin (0.01 <span><math><mi>μ</mi></math></span>m) top p-layer, which mitigated surface recombination and boosted charge collection. The V<sub>OC</sub>, J<sub>SC</sub> and FF of the optimized PPN were found to be 0.94 V, 42.79 mA/cm<sup>2</sup>, and 84.60 %, respectively. The PCE of the optimized PN and PPN device decreased as (33.93–21.97 %) and (26.46–7.51 %), respectively, with rising temperature (250–500 K). The PPN structure delivered satisfactory performance all temperatures, making it suitable even for elevated temperature applications. The PCE of the PPN device under standard ambient conditions agrees with the Shockley-Queisser efficiency limit for single-junction solar cells.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101597"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2026-01-22DOI: 10.1016/j.nxmate.2026.101644
Amirkianoosh Kiani
Battery management systems need accurate lifetime predictions to prevent failures and optimize replacement schedules, but acquiring training data requires months of controlled aging experiments per cell. We demonstrate that quantum computers can learn battery degradation patterns from far less data than classical methods. Using quantum kernel regression on 64 lithium-iron-phosphate cells, we achieved 2.1 % better prediction accuracy than classical approaches, but more importantly, required 6.6 times fewer training samples to reach equivalent performance. Real-world validation on IBM's 156-qubit quantum processor revealed severe noise challenges—performance dropped 54 %—but advanced error mitigation recovered 38 % of this loss. The quantum advantage emerges specifically in data-limited regimes where each additional cell requires months of testing. This positions quantum machine learning as a practical accelerator for battery research, materials discovery, and other domains where data acquisition time dominates development cycles.
{"title":"Quantum kernel learning achieves battery prognostics on noisy quantum hardware","authors":"Amirkianoosh Kiani","doi":"10.1016/j.nxmate.2026.101644","DOIUrl":"10.1016/j.nxmate.2026.101644","url":null,"abstract":"<div><div>Battery management systems need accurate lifetime predictions to prevent failures and optimize replacement schedules, but acquiring training data requires months of controlled aging experiments per cell. We demonstrate that quantum computers can learn battery degradation patterns from far less data than classical methods. Using quantum kernel regression on 64 lithium-iron-phosphate cells, we achieved 2.1 % better prediction accuracy than classical approaches, but more importantly, required 6.6 times fewer training samples to reach equivalent performance. Real-world validation on IBM's 156-qubit quantum processor revealed severe noise challenges—performance dropped 54 %—but advanced error mitigation recovered 38 % of this loss. The quantum advantage emerges specifically in data-limited regimes where each additional cell requires months of testing. This positions quantum machine learning as a practical accelerator for battery research, materials discovery, and other domains where data acquisition time dominates development cycles.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101644"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2026-01-21DOI: 10.1016/j.nxmate.2026.101629
Saad S. Alrwashdeh
Decarbonization of the maritime propulsion and auxiliary power systems require the high-efficiency, zero-emission technologies. Key to this transition are the proton exchange Membrane Fuel Cells (PEMFCs); however, their stability in the long-term and water management ability is limited by the presence of suboptimal Microporous Layer (MPL) designs. In this work, a detailed, simulation-based optimization of MPL structures has been provided to work with marine operating conditions, particularly the interaction between porosity gradient, pore-size distribution, and hydrophobic binder ratio. Four new MPL configurations, including gradient-porosity, dual-layer, nano-structured and hydrophobic-optimized, were systematically evaluated using a coupled multiphysics model, which included electrochemical kinetics, two-phase flow and thermal fields as compared to a traditional reference MPL design. A simultaneous increase in power density of 17.8 %, a 22 % reduction in flooding incidence, and an extended lifespan of 6700 h were realized in the optimized nano-structured MPL. Increased diffusivity of oxygen, better capillary control and uniform distribution of thermal loads all reduced ohmic and activation losses. The findings demonstrate a direct relationship between multi-parameter stability and microstructural refinement, which provides a predictive model of the design of the next generation PEMFCs in the maritime systems.
{"title":"Microporous layer (MPL) material structural modifications for enhanced efficiency and durability of proton exchange membrane fuel cells (PEMFCs): Toward sustainable maritime energy solutions","authors":"Saad S. Alrwashdeh","doi":"10.1016/j.nxmate.2026.101629","DOIUrl":"10.1016/j.nxmate.2026.101629","url":null,"abstract":"<div><div>Decarbonization of the maritime propulsion and auxiliary power systems require the high-efficiency, zero-emission technologies. Key to this transition are the proton exchange Membrane Fuel Cells (PEMFCs); however, their stability in the long-term and water management ability is limited by the presence of suboptimal Microporous Layer (MPL) designs. In this work, a detailed, simulation-based optimization of MPL structures has been provided to work with marine operating conditions, particularly the interaction between porosity gradient, pore-size distribution, and hydrophobic binder ratio. Four new MPL configurations, including gradient-porosity, dual-layer, nano-structured and hydrophobic-optimized, were systematically evaluated using a coupled multiphysics model, which included electrochemical kinetics, two-phase flow and thermal fields as compared to a traditional reference MPL design. A simultaneous increase in power density of 17.8 %, a 22 % reduction in flooding incidence, and an extended lifespan of 6700 h were realized in the optimized nano-structured MPL. Increased diffusivity of oxygen, better capillary control and uniform distribution of thermal loads all reduced ohmic and activation losses. The findings demonstrate a direct relationship between multi-parameter stability and microstructural refinement, which provides a predictive model of the design of the next generation PEMFCs in the maritime systems.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101629"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2026-01-20DOI: 10.1016/j.nxmate.2026.101625
Mohd Aman , Vivek Kumar , Rakesh Kumar Yadav , Manvandra Kumar Singh
Researchers are currently working to replace hazardous synthetic fibers with sustainable alternatives. The present work investigates the treatment of moonj fibre using sodium hydroxide (NaOH) followed by reinforcement with epoxy resin. Poor fiber-matrix adhesion and absorption of moisture are the main disadvantages of adopting natural fiber. These disadvantages of natural fibre may be improved by selection of an appropriate chemical treatment procedure. In the present work, moonj fibre is chemically treated with 1 %, 2 %, and 3 % NaOH for 4 hr. It has been found that fibers treated with 1 % NaOH for 4 h exhibit greater tensile strength compared to untreated fibers or those treated with different concentration. A hand lay-up process has been employed to develop moonj fibre reinforced epoxy composites with different fiber percentages (40 %, 50 %, and 60 %). This was done to investigate how the materials mechanical and morphological properties are impacted by the fiber contents and alkali treatment concentrations. The main findings of this study are the developed composites that have exhibited the better mechanical behaviour as compared to the pure epoxy matrix. The optimum tensile strength of 28.3 MPa, flexural strength of 121 MPa, and hardness value is 66.08 HV are observed for the composition of 50M50E composite (50 % moonj fibre and 50 % epoxy), respectively with strong interfacial bonding as well. According to the test results, moonj fibre reinforced composite is a good lightweight substitute for traditional materials in applications involving car bodies and aerospace. To determine the surface topography and texture of the developed composite, scanning electron microscope (SEM) is employed. The developed composite can be used for the sustainable lightweight structural applications such as automotive interior components, including panels, trims, and lightweight structural covers and household product casings such as furniture panels, decorative boards, and lightweight enclosures etc. The novelty of the research work is a uniquely optimizes NaOH treatment for moonj fibre and identifies 1 % NaOH for 4 h as the most effective for enhancing fibre matrix bonding. It also demonstrates, for the first time, that a 50 % moonj fibre-50 % epoxy composite delivers significantly improved tensile, flexural, and hardness properties. The present work highlights moonj fibre as a new sustainable reinforcement for lightweight semi-structural applications.
{"title":"Microstructural and mechanical properties of alkaline-treated moonj fibre reinforced epoxy composite","authors":"Mohd Aman , Vivek Kumar , Rakesh Kumar Yadav , Manvandra Kumar Singh","doi":"10.1016/j.nxmate.2026.101625","DOIUrl":"10.1016/j.nxmate.2026.101625","url":null,"abstract":"<div><div>Researchers are currently working to replace hazardous synthetic fibers with sustainable alternatives. The present work investigates the treatment of moonj fibre using sodium hydroxide (NaOH) followed by reinforcement with epoxy resin. Poor fiber-matrix adhesion and absorption of moisture are the main disadvantages of adopting natural fiber. These disadvantages of natural fibre may be improved by selection of an appropriate chemical treatment procedure. In the present work, moonj fibre is chemically treated with 1 %, 2 %, and 3 % NaOH for 4 hr. It has been found that fibers treated with 1 % NaOH for 4 h exhibit greater tensile strength compared to untreated fibers or those treated with different concentration. A hand lay-up process has been employed to develop moonj fibre reinforced epoxy composites with different fiber percentages (40 %, 50 %, and 60 %). This was done to investigate how the materials mechanical and morphological properties are impacted by the fiber contents and alkali treatment concentrations. The main findings of this study are the developed composites that have exhibited the better mechanical behaviour as compared to the pure epoxy matrix. The optimum tensile strength of 28.3 MPa, flexural strength of 121 MPa, and hardness value is 66.08 HV are observed for the composition of 50M50E composite (50 % moonj fibre and 50 % epoxy), respectively with strong interfacial bonding as well. According to the test results, moonj fibre reinforced composite is a good lightweight substitute for traditional materials in applications involving car bodies and aerospace. To determine the surface topography and texture of the developed composite, scanning electron microscope (SEM) is employed. The developed composite can be used for the sustainable lightweight structural applications such as automotive interior components, including panels, trims, and lightweight structural covers and household product casings such as furniture panels, decorative boards, and lightweight enclosures etc. The novelty of the research work is a uniquely optimizes NaOH treatment for moonj fibre and identifies 1 % NaOH for 4 h as the most effective for enhancing fibre matrix bonding. It also demonstrates, for the first time, that a 50 % moonj fibre-50 % epoxy composite delivers significantly improved tensile, flexural, and hardness properties. The present work highlights moonj fibre as a new sustainable reinforcement for lightweight semi-structural applications.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101625"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146026210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2026-02-12DOI: 10.1016/j.nxmate.2026.101736
Tianyu Sun , Zhongyuan Ren , Jiarui Liu , Dominic E.L. Ong , Jeung-Hwan Doh
3D printing technology has emerged as a major trend in the current development of the construction industry due to its ability to save materials, time, and labor, while enabling rapid construction. However, due to the lack of rigid formwork for support, 3D printing concrete faces challenges in controlling the flow of fresh concrete and the dimensions after curing. Therefore, controlling the rheological properties to ensure the integrity and basic mechanical properties of 3D printing structures has become a key focus for the advancement. This paper employs bibliometric analysis to review relevant literature from the past decade and discusses various factors influencing the rheological properties of 3D printing concrete. First, a series of rheological models proposed by previous studies are examined and compared. Next, the impact of rheological properties on key factors such as pumpability, extrudability, buildability, and open time is discussed, along with an analysis of the various factors that affect these properties. Finally, the experimental methods and standards for assessing rheological properties are compared and summarized, with predictions made regarding the future development prospects and trends for 3D printing concrete. In general, research on the rheological properties of 3D printing concrete and the development of environmentally friendly materials have become key future development directions and research hotspots. To better ensure the calculation and evaluation of rheological properties, the development of appropriate rheological models and rheometers is essential. At the same time, optimizing material mix ratios and incorporating suitable additives can better control the rheological properties and printability. Finally, as the development of rheological, it is crucial to further improve national standards and experimental methods to enhance consistency and reliability in 3D printing concrete applications.
{"title":"Rheology properties and future trend of 3D printing concrete: State of the art review","authors":"Tianyu Sun , Zhongyuan Ren , Jiarui Liu , Dominic E.L. Ong , Jeung-Hwan Doh","doi":"10.1016/j.nxmate.2026.101736","DOIUrl":"10.1016/j.nxmate.2026.101736","url":null,"abstract":"<div><div>3D printing technology has emerged as a major trend in the current development of the construction industry due to its ability to save materials, time, and labor, while enabling rapid construction. However, due to the lack of rigid formwork for support, 3D printing concrete faces challenges in controlling the flow of fresh concrete and the dimensions after curing. Therefore, controlling the rheological properties to ensure the integrity and basic mechanical properties of 3D printing structures has become a key focus for the advancement. This paper employs bibliometric analysis to review relevant literature from the past decade and discusses various factors influencing the rheological properties of 3D printing concrete. First, a series of rheological models proposed by previous studies are examined and compared. Next, the impact of rheological properties on key factors such as pumpability, extrudability, buildability, and open time is discussed, along with an analysis of the various factors that affect these properties. Finally, the experimental methods and standards for assessing rheological properties are compared and summarized, with predictions made regarding the future development prospects and trends for 3D printing concrete. In general, research on the rheological properties of 3D printing concrete and the development of environmentally friendly materials have become key future development directions and research hotspots. To better ensure the calculation and evaluation of rheological properties, the development of appropriate rheological models and rheometers is essential. At the same time, optimizing material mix ratios and incorporating suitable additives can better control the rheological properties and printability. Finally, as the development of rheological, it is crucial to further improve national standards and experimental methods to enhance consistency and reliability in 3D printing concrete applications.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101736"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146173619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The latex processing stage is a critical step in the natural rubber industry. The choice of an appropriate processing method determines the sequence and duration of each stage, ultimately influencing both investment and operational costs. This review examines the encapsulating of natural rubber using spray drying technology and its market prospects. Conventional natural rubber processing involves intensive stages and a considerable amount of equipment, such as coagulation, milling, pre-drying, shredding, and drying. Simplifying this lengthy procedure and minimizing the need for intensive equipment can be achieved by employing encapsulation technology through spray drying. One of the key factors in the encapsulation of natural rubber particles is the use of non-adhesive additives, which help reduce the inherent tackiness of natural rubber. These additives act as encapsulating agents, enveloping natural rubber particles and preventing stickiness between them. The selection of additive materials is one of the crucial factors in applying spray drying technology for natural rubber. Given its numerous advantages, spray drying technology is suitable for small-scale applications, particularly in smallholder plantations. Encapsulated natural rubber products exhibit significant market potential as innovative alternatives. Several studies have investigated the drying process of natural rubber using spray drying technology with various encapsulating material alternatives. The results of these studies indicate that natural rubber latex can be processed into encapsulated natural rubber. Further comprehensive research is needed to evaluate its applicability in the production of end-use rubber products.
{"title":"Development of natural rubber encapsulation technology using spray drying: A comprehensive review","authors":"Afrizal Vachlepi , Soen Steven , Ernie S.A. Soekotjo , Hafis Pratama Rendra Graha , Akhmad Zainal Abidin , Tjokorde Walmiki Samadhi , Arief Ameir Rahman Setiawan","doi":"10.1016/j.nxmate.2026.101592","DOIUrl":"10.1016/j.nxmate.2026.101592","url":null,"abstract":"<div><div>The latex processing stage is a critical step in the natural rubber industry. The choice of an appropriate processing method determines the sequence and duration of each stage, ultimately influencing both investment and operational costs. This review examines the encapsulating of natural rubber using spray drying technology and its market prospects. Conventional natural rubber processing involves intensive stages and a considerable amount of equipment, such as coagulation, milling, pre-drying, shredding, and drying. Simplifying this lengthy procedure and minimizing the need for intensive equipment can be achieved by employing encapsulation technology through spray drying. One of the key factors in the encapsulation of natural rubber particles is the use of non-adhesive additives, which help reduce the inherent tackiness of natural rubber. These additives act as encapsulating agents, enveloping natural rubber particles and preventing stickiness between them. The selection of additive materials is one of the crucial factors in applying spray drying technology for natural rubber. Given its numerous advantages, spray drying technology is suitable for small-scale applications, particularly in smallholder plantations. Encapsulated natural rubber products exhibit significant market potential as innovative alternatives. Several studies have investigated the drying process of natural rubber using spray drying technology with various encapsulating material alternatives. The results of these studies indicate that natural rubber latex can be processed into encapsulated natural rubber. Further comprehensive research is needed to evaluate its applicability in the production of end-use rubber products.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101592"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A new pyrochlore solid solution with formula Bi1.56 – x/8Sb1.48-x/8Co0.96-xFexO7 (0 ≤ x ≤ 0.96) was synthesized by the ceramic method at high temperature. The cell parameter decreased gradually with increasing iron content. The structure refinement by the Rietveld method showed for x = 0.96 a new compound with formula Bi1.44Sb1.36Fe0.96O7 witch crystallizing in the Fdm space group. The average crystallite size calculated by the Scherrer equation varied between 62 and 69 nm. The scanning electron microscopy (SEM) analysis revealed a granular surface. The average particle size was estimated to be between 700 and 1072 nm. The magnetic susceptibility of Bi1.44Sb1.36Fe0.96O7 compound, measured from 5 K to 400 K, shows a Curie–Weiss temperature θCW of approximately −206.74. This value indicates significant antiferromagnetic cooperative interactions. The observed effective magnetic moment of 5.99 μB, indicated the spin-only values expected for Fe3 + (i.e 3d5, high spin . The UV-Vis diffuse reflectance spectroscopy (UV/DRS) indicated an absorption in the visible range, with an optical band gap energy (Eg) between 2.53 and 2.12 eV.
{"title":"Structural, optical and magnetic proprieties of a new pyrochlore type structure (Bi1.44□0.24Fe0.32)(Sb1.36Fe0.64)O7 compound derived from the Bi1.56 – x/8Sb1.48-x/8Co0.96-xFexO7 (0 ≤ x ≤ 0.96) solid solution","authors":"Fadia Merabet , Mayouf Sellami , Mostefa Kameche , Vincent Caignaert , Kheira Zouaoui , Bouazza Talbi , Karima Ezziane","doi":"10.1016/j.nxmate.2026.101639","DOIUrl":"10.1016/j.nxmate.2026.101639","url":null,"abstract":"<div><div>A new pyrochlore solid solution with formula Bi<sub>1.56 – x/8</sub>Sb<sub>1.48-x/8</sub>Co<sub>0.96-x</sub>Fe<sub>x</sub>O<sub>7</sub> (0 ≤ x ≤ 0.96) was synthesized by the ceramic method at high temperature. The cell parameter decreased gradually with increasing iron content. The structure refinement by the Rietveld method showed for x = 0.96 a new compound with formula Bi<sub>1.44</sub>Sb<sub>1.36</sub>Fe<sub>0.96</sub>O<sub>7</sub> witch crystallizing in the Fd<span><math><mover><mrow><mn>3</mn></mrow><mo>̅</mo></mover></math></span>m space group. The average crystallite size calculated by the Scherrer equation varied between 62 and 69 nm. The scanning electron microscopy (SEM) analysis revealed a granular surface. The average particle size was estimated to be between 700 and 1072 nm. The magnetic susceptibility of Bi<sub>1.44</sub>Sb<sub>1.36</sub>Fe<sub>0.96</sub>O<sub>7</sub> compound, measured from 5 K to 400 K, shows a Curie–Weiss temperature θ<sub>CW</sub> of approximately −206.74. This value indicates significant antiferromagnetic cooperative interactions. The observed effective magnetic moment of 5.99 <sub>μB</sub>, indicated the spin-only values expected for Fe<sup>3 +</sup> (i.e 3d<sup>5</sup>, high spin <span><math><mrow><msubsup><mrow><mi>t</mi></mrow><mrow><mn>2</mn><mi>g</mi></mrow><mrow><mn>3</mn></mrow></msubsup><msubsup><mrow><mi>e</mi></mrow><mrow><mi>g</mi></mrow><mrow><mn>2</mn></mrow></msubsup><mo>)</mo></mrow></math></span>. The UV-Vis diffuse reflectance spectroscopy (UV/DRS) indicated an absorption in the visible range, with an optical band gap energy (Eg) between 2.53 and 2.12 eV.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101639"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2026-01-28DOI: 10.1016/j.nxmate.2026.101649
Mithlesh Jani, Preeti Jain
The present study investigates the corrosion inhibition performance of expired Favipiravir and Hydroxychloroquine sulfate for low-carbon steel in 2 M H₂SO₄ medium. Gravimetric testing, thermometric measurements, and potentiodynamic polarization were employed to quantify the inhibition response, while Density Functional Theory (DFT) modeling supported mechanistic interpretation. Both expired drugs effectively suppressed metal dissolution, achieving maximum inhibition efficiencies of 92.61 % for Favipiravir and 96.55 % for Hydroxychloroquine sulfate at 500 ppm and 303 K. Langmuir adsorption isotherm analysis indicated monolayer adsorption governed by a synergistic physisorption–chemisorption mechanism. Microscopic examinations confirmed reduced surface roughness and corrosion product formation in inhibited systems. DFT results revealed favorable frontier orbital energies, high dipole moments, and strong electron-donor capability, correlating well with experimental observations. This study uniquely demonstrates the comparative inhibition efficiency and adsorption behavior of two structurally distinct expired antiviral drugs, revealing a structure–activity relationship that links electronic properties with corrosion resistance. The findings highlight a novel valorization pathway for expired pharmaceuticals as sustainable, cost-effective, and eco-friendly corrosion inhibitors for industrial applications.
研究了过期Favipiravir和硫酸羟氯喹在2 M H₂SO₄介质中对低碳钢的缓蚀性能。通过重力测试、温度测量和动电位极化来量化抑制反应，而密度泛函理论（DFT）模型支持机理解释。两种过期药物均能有效抑制金属溶出，在500 ppm和303 K条件下，Favipiravir和硫酸羟氯喹的最大抑制效率分别为92.61 %和96.55 %。Langmuir吸附等温线分析表明，单层吸附是一种物理-化学协同吸附机制。显微镜检查证实，在抑制体系中，表面粗糙度和腐蚀产物的形成有所降低。DFT结果显示了有利的前沿轨道能、高偶极矩和强电子给体能力，与实验观测结果吻合良好。本研究独特地展示了两种结构不同的过期抗病毒药物的比较抑制效率和吸附行为，揭示了电子性质与耐腐蚀性之间的构效关系。这一发现强调了一种新的增值途径，将过期药物作为可持续、经济、环保的工业应用腐蚀抑制剂。
{"title":"Comparative corrosion inhibition of expired favipiravir and hydroxychloroquine sulfate: An In Silico and In Vitro study","authors":"Mithlesh Jani, Preeti Jain","doi":"10.1016/j.nxmate.2026.101649","DOIUrl":"10.1016/j.nxmate.2026.101649","url":null,"abstract":"<div><div>The present study investigates the corrosion inhibition performance of expired Favipiravir and Hydroxychloroquine sulfate for low-carbon steel in 2 M H₂SO₄ medium. Gravimetric testing, thermometric measurements, and potentiodynamic polarization were employed to quantify the inhibition response, while Density Functional Theory (DFT) modeling supported mechanistic interpretation. Both expired drugs effectively suppressed metal dissolution, achieving maximum inhibition efficiencies of 92.61 % for Favipiravir and 96.55 % for Hydroxychloroquine sulfate at 500 ppm and 303 K. Langmuir adsorption isotherm analysis indicated monolayer adsorption governed by a synergistic physisorption–chemisorption mechanism. Microscopic examinations confirmed reduced surface roughness and corrosion product formation in inhibited systems. DFT results revealed favorable frontier orbital energies, high dipole moments, and strong electron-donor capability, correlating well with experimental observations. This study uniquely demonstrates the comparative inhibition efficiency and adsorption behavior of two structurally distinct expired antiviral drugs, revealing a structure–activity relationship that links electronic properties with corrosion resistance. The findings highlight a novel valorization pathway for expired pharmaceuticals as sustainable, cost-effective, and eco-friendly corrosion inhibitors for industrial applications.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101649"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146079321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2026-04-01Epub Date: 2026-01-13DOI: 10.1016/j.nxmate.2026.101588
Pradeep Yadav , Roopali T. Biradar , Vivek D. Zade , Umesh D. Laddha , Yatin U. Gadkari , Kailas K. Moravkar
This research sought to enhance the bioavailability and brain delivery of ginseng, a conventional herbal remedy with therapeutic potential for cognitive impairments, which is limited by poor oral bioavailability and brain penetration. Ginseng-loaded lipid nanoparticles (LNPs) were formulated using a thermal emulsification technique followed by probe sonication. The resultant nanocarriers were characterized with respect to particle size distribution, zeta potential, and stability. The optimized lipid nano-carrier (LNC) was integrated into an in situ gel system and evaluated for its physicochemical properties, muco-adhesion, and permeation through a nasal epithelial cell model. In silico docking studies indicated significant interactions between ginsenosides and the 5-hydroxytryptamine receptor, suggesting a possible mechanism for cognitive enhancement. Confocal laser scanning microscopy (CLSM) and in vivo investigations were conducted to support these findings. The ginseng-loaded LNPs demonstrated a particle size distribution between 178 nm and 213 nm, with a negative zeta potential (-9.07) and an encapsulation efficiency of 79.58 %. Docking studies showed a promising docking score of −7, highlighting the binding potential of ginsenosides with the 5-HT receptor. The in situ gel system facilitated sustained release of ginseng and significantly enhanced permeation through the epithelial layer compared to a ginseng suspension. In vivo investigations demonstrated that the ginseng concentration in the CNS was 3.5 times higher in the groups administered the ginseng-loaded NLC in-situ gel than in those given a simple ginseng suspension. The ginseng-encapsulated NLC in-situ gel system shows potential for enhanced cerebral delivery and cognitive enhancement, offering a promising strategy for treating cognitive disorders.
{"title":"Ginseng-loaded nanostructured lipid gels for nose-to-brain targeted modulation of 5-HT receptors in cognitive disorders","authors":"Pradeep Yadav , Roopali T. Biradar , Vivek D. Zade , Umesh D. Laddha , Yatin U. Gadkari , Kailas K. Moravkar","doi":"10.1016/j.nxmate.2026.101588","DOIUrl":"10.1016/j.nxmate.2026.101588","url":null,"abstract":"<div><div>This research sought to enhance the bioavailability and brain delivery of ginseng, a conventional herbal remedy with therapeutic potential for cognitive impairments, which is limited by poor oral bioavailability and brain penetration. Ginseng-loaded lipid nanoparticles (LNPs) were formulated using a thermal emulsification technique followed by probe sonication. The resultant nanocarriers were characterized with respect to particle size distribution, zeta potential, and stability. The optimized lipid nano-carrier (LNC) was integrated into an in situ gel system and evaluated for its physicochemical properties, muco-adhesion, and permeation through a nasal epithelial cell model. In silico docking studies indicated significant interactions between ginsenosides and the 5-hydroxytryptamine receptor, suggesting a possible mechanism for cognitive enhancement. Confocal laser scanning microscopy (CLSM) and <em>in vivo</em> investigations were conducted to support these findings. The ginseng-loaded LNPs demonstrated a particle size distribution between 178 nm and 213 nm, with a negative zeta potential (-9.07) and an encapsulation efficiency of 79.58 %. Docking studies showed a promising docking score of −7, highlighting the binding potential of ginsenosides with the 5-HT receptor. The in situ gel system facilitated sustained release of ginseng and significantly enhanced permeation through the epithelial layer compared to a ginseng suspension. <em>In vivo</em> investigations demonstrated that the ginseng concentration in the CNS was 3.5 times higher in the groups administered the ginseng-loaded NLC in-situ gel than in those given a simple ginseng suspension. The ginseng-encapsulated NLC in-situ gel system shows potential for enhanced cerebral delivery and cognitive enhancement, offering a promising strategy for treating cognitive disorders.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"11 ","pages":"Article 101588"},"PeriodicalIF":0.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号