Nano-Structures & Nano-Objects最新文献

{"title":"Crystallographic impact on hydrolysis catalyst (pH) of Sol-gel derived polymorphs TiO2 nanocrystals","authors":"Md. Ashikur Rahaman ,&nbsp;Md. Tarikul Islam ,&nbsp;Gazi Md. Arifuzzaman Khan ,&nbsp;Rahima Tanbin Tama ,&nbsp;Shanawaz Ahmed ,&nbsp;Aliza Rahman ,&nbsp;Mist Toma Khatun ,&nbsp;Md. Ashraful Alam","doi":"10.1016/j.nanoso.2026.101701","DOIUrl":"10.1016/j.nanoso.2026.101701","url":null,"abstract":"<div><div>High-crystallinity anatase nanoparticles (NPs) were synthesized using a scalable sol-gel route with tetraisopropyl orthotitanate (TIOT) as the precursor and isopropyl alcohol as the peptizing agent under controlled pH conditions of 4.0, 9.0 and 11.0. The X-ray diffraction analysis supported by Rietveld refinement revealed that the crystallographic properties of the NPs were strongly dependent on the synthesis pH. The sample prepared at pH 9.0 exhibited a single anatase phase with 100 % purity, an average crystallite size of 8.227 nm, a crystallinity index of 1.381 and the highest theoretically estimated specific surface area of 188.988 m²/g based on XRD-derived crystallite size. The optical band gap energies, estimated using Kubelka–Munk-based Tauc plots assuming indirect allowed transitions, were calculated to be 2.94 eV (pH 4.0), 2.73 eV (pH 9.0) and 3.12 eV (pH 11.0). TEM analysis of the optimized pH 9.0 sample confirmed well-dispersed nanoparticles with an average particle size of approximately 9.60 nm, while HR-TEM and SAED verified the anatase lattice structure. TEM-EDS analysis confirmed elemental purity with ∼62.0 % Ti and ∼38.0 % O. The pH 9.0 anatase demonstrated high photocatalytic efficiency, achieving 91.05 % degradation of crystal violet dye under halogen light irradiation. A comprehensive correlation between synthesis pH, crystallographic strain, lattice properties and photocatalytic activity was established through combined Rietveld refinement and TEM. The study establishes a systematic correlation between synthesis pH and provides deeper insight into the structure-property relationship governing controlled TiO₂ nanocrystals.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101701"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184109","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}

{"title":"\"Effect on microstructure, dielectric, and Ku-band electromagnetic behaviour of “Ni²⁺-substituted Cd–Al spinel ferrites\"","authors":"Shikhil S. Wanjari ,&nbsp;Amit V. Gongal ,&nbsp;Deoram V. Nandanwar ,&nbsp;K.G. Rewatkar ,&nbsp;Madhukar G. Dhonde ,&nbsp;Satish G. Goswami ,&nbsp;Ganesh C. Vandile ,&nbsp;Aditya V. Tiwari","doi":"10.1016/j.nanoso.2026.101699","DOIUrl":"10.1016/j.nanoso.2026.101699","url":null,"abstract":"<div><div>Ni_xCd_1-xAl_0.1Fe_1.9O₄ (NCAF) (x = 0.0–1.0) nanoferrites were synthesized via the sol–gel auto-combustion route and annealed at 800 °C to investigate the effect of Ni²⁺ substitution on microstructural and high-frequency electromagnetic properties. SEM analysis revealed a gradual reduction in grain size from 0.907 μm to 0.417 μm, while HR-TEM confirmed nanosized (29.7 nm) particles. Magnetic susceptibility (<em>χ′</em>_<em>AC</em>) increased with Ni²⁺ content, indicating improved magnetic response. In the Ku-band (12.4–18 GHz) demonstrated that Ni²⁺ substitution results in slight but systematic variations in dielectric (<em>ε′</em>: 3.70–3.08) and magnetic (μ′: 1.10–1.27) parameters. The dielectric response exhibits weak frequency dependence, while <em>ε″</em> remains relatively low, indicating moderate dielectric loss. The AC conductivity follows a frequency-dependent trend associated with hopping conduction, and non-Debye relaxation behaviour (10⁻¹¹ s) is observed. The loss tangent shows peaks (0.33 at 13.5 GHz), reflecting combined dielectric and magnetic loss contributions. Reflection loss (RL) values ranging from −13.97 to −30.52 dB were obtained for thicknesses between 1–8 mm, with improved attenuation observed near 13–15 GHz. These results indicate that Ni²⁺ substitution enables tuning of electromagnetic parameters and attenuation behaviour within the Ku-band.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101699"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147991769","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}

{"title":"Green synthesis and assessment of MnP, Mn-Er doped, and Mn-Er composite NPs from Parthenium hysterophorus flower extract: A study on the antimicrobial, photodegradation and antioxidant capacity","authors":"Uday Singh Thakur ,&nbsp;Kuldeep Kumar ,&nbsp;Ashwani Kumar ,&nbsp;Naveen Thakur","doi":"10.1016/j.nanoso.2026.101679","DOIUrl":"10.1016/j.nanoso.2026.101679","url":null,"abstract":"<div><div>The objective of this study was to synthesize manganese (Mn) based nanoparticles (NPs) utilizing an economic, environmentally friendly and simple process. Pure manganese (MnP), erbium doped manganese (MnErD), and manganese- erbium composite (MnErC) NPs were synthesized using <em>Parthenium hysterophorus</em> L. flower extract. The synthesis was carried out using a waterbath maintained at 50 °C, without calcination or high temperature treatment. The structure, morphology and chemical composition of the NPs were assessed via XRD, SEM, TEM, EDX, FTIR, and XPS approaches. XRD confirmed NPs exhibited good crystallinity with sizes of 10–25 nm. The TEM and SEM images showed a mixture of elongated, spherical and rod-like structures. The rod shaped particles exhibited average length of 93 ± 2 nm and average radius of 7 nm. The calculated length to radius (aspect) ratio of these rods is approx 13 nm. A reduction in energy bandgap from 2.8 to 1.7 eV was observed with erbium doping. Antimicrobial activity was evaluated against <em>E. coli</em> (Gram negative bacteria), <em>S. aureus</em> and <em>B. subtilis</em> (Gram positive bacteria). Among all the above synthesised NPs, MnErC showed the strongest antibacterial performance mainly against <em>E. coli</em>. The antioxidant was activity evaluated using DPPH assay. MnErC NPs also showed maximum scavenging efficiency of 92.04%. In addition, MnErC NPs also showed superior photocatalytic degradation toward Malachite Green (97.35%), Bismarck Brown Y (97.29%), and Methylene Blue (96.59%) within 100 min under UV light. This study reveals that crystalline and functionally diverse NPs can be obtained via a cost efficient and environmentally friendly route. A simple waterbath method was adequate without the need for high temperature treatment. The findings suggest the strong potential of the prepared NPs for environmental and biomedical applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101679"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147849672","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}

{"title":"Advances in thin-film and one-dimensional UV photodetectors: Materials, architectures, and thermal stability","authors":"Mohammad Istiaque Hossain ,&nbsp;Bashar Farooq ,&nbsp;Alaa Elsafi ,&nbsp;Abinisha Thiruchuthan ,&nbsp;Dhanup S. Pillai ,&nbsp;Brahim Aissa","doi":"10.1016/j.nanoso.2026.101687","DOIUrl":"10.1016/j.nanoso.2026.101687","url":null,"abstract":"<div><div>The increasing need of the new industrial, environmental, and biomedical fields has aggravated the research of ultraviolet (UV) photodetectors. This review discusses the advances in technology of UV photodetectors, their history of transformation through the traditional thin-film semiconductor technology to state-of-the-art one-dimensional (1-D) nanostructured technology. It is well known that wide bandgap semiconductors, (Al, In) GaN, diamond and SiC exhibit significantly better responsivity, thermal performance and response time than standard silicon-based photodetectors. Later developments have offered β-Ga₂O₃, GaN and ZnO nanowire networks, which utilize quantum confinement physics and increased surface area to provide high UV detection efficiency at high temperature operations such as in flame detection. Thermal resistance is highlighted as one of the most critical parameters to measure the preparation of lab prototypes to be used in practice. The structural design is demonstrated to have a considerable effect on the thermal behavior, which in turn determines the reliability of the device in general. As an ensemble, 1D nanostructured photodetectors have better sensitivity and enhanced stability at high-temperature conditions compared to thin-film photodetectors, and β-Ga₂O₃ is a promising material in the next generation of high-detectivity and thermally resilient UV photodetectors.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101687"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147850277","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}

{"title":"Green-synthesized Y/Co Co-doped TiO2 nanoparticles from Lagenaria siceraria peel for enhanced photocatalytic and antibacterial performance","authors":"AKM Asif Iqbal ,&nbsp;Dewan Muhammad Nuruzzaman ,&nbsp;A.K.M. Parvez Iqbal","doi":"10.1016/j.nanoso.2026.101705","DOIUrl":"10.1016/j.nanoso.2026.101705","url":null,"abstract":"<div><div>This study reports a green synthesis route for pure and Y/Co co-doped TiO₂ nanoparticles using Lagenaria siceraria peel extract as a natural reducing and stabilizing agent. A key contribution of this work is the integration of plant-mediated synthesis with Y/Co co-doping to simultaneously tailor the structural, optical, photocatalytic, and antibacterial properties of TiO₂ within a single framework. X-ray diffraction confirmed that all synthesized samples retained the anatase phase, while peak shifting and strain analysis indicated successful incorporation of Y and Co into the TiO₂ lattice. FTIR, SEM, and EDX analyses further verified changes in bonding environment, reduced particle size, and effective dopant incorporation. UV-Vis spectroscopy revealed progressive band-gap narrowing after co-doping, demonstrating improved optical response compared with pure TiO₂. The crystallite size decreased from 9.77 nm to 8.23 nm, while the optical band gap decreased from 3.35 eV to 3.00 eV after Y/Co co-doping. These modifications led to enhanced functional performance, particularly in the photocatalytic degradation of methylene blue under UV irradiation, where the 3% Y/Co co-doped TiO₂ showed the highest degradation efficiency. The 3% Y/Co co-doped TiO₂ achieved a photocatalytic degradation efficiency of 92.45% after 120 min under UV irradiation. Antibacterial studies against S. aureus and E. coli also demonstrated stronger activity for the co-doped samples, supported by improved minimum inhibitory concentration values. In addition, brine shrimp lethality testing indicated increased biological activity at higher dopant concentration. Overall, the results show that Y/Co co-doping is an effective strategy for tailoring the physicochemical and biological properties of green-synthesized TiO₂ nanoparticles. Among the investigated compositions, 3% Y/Co co-doped TiO₂ exhibited the best overall performance, highlighting its potential for sustainable photocatalytic and antimicrobial applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101705"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184105","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}

{"title":"Electrical transport & dielectric properties of hard/soft CoFe2O4@NiAlxFe2-xO4 (x ≤ 0.20) nanocomposites","authors":"B. Ünal ,&nbsp;M.A. Almessiere ,&nbsp;A. Baykal ,&nbsp;A. Demir Korkmaz ,&nbsp;Y.M. Altintaş","doi":"10.1016/j.nanoso.2026.101700","DOIUrl":"10.1016/j.nanoso.2026.101700","url":null,"abstract":"<div><div>Hard/soft CoFe₂O₄@NiAl_xFe_2-xO₄ (0.00, 0.02, 0.04, 0.06, 0.08, 0.10, 0.15, 0.20) nanocomposites (H/S CFO@Al→NFO (x ≤ 0.20) NCs) were produced via Sol gel route. The structural, morphological and composition analyses were carried out using XRD, TEM, HR-TEM, SEM along with EDX respectively and the electrical/dielectric features are elucidated in the light of these results. The dielectric and electrical features of products were systematically studied to understand how Al³⁺ ion substitution affects charge transport, polarization mechanisms, and relaxation dynamics. It is evident that AC conductivity (σ_AC) displayed strong dependence on frequency (<em>f</em>) and temperature (<em>T)</em>, aligning with thermally activated small-polaron hopping. It was found that moderate levels of substitution (say, x = 0.02 – 0.06) increased conductivity due to cation redistribution and local structural distortion, while higher substitution levels (x ≥ 0.08) decreased σ_AC due to dilution of Fe²⁺/Fe³⁺ hopping centers. It is interesting that DC conductivity (σ_DC) tracked Arrhenius behavior, with activation energy (<em>E</em>_<em>A</em>) rising to about 406 meV for 0.08 ≤ x ≤ 0.15, then sharply dropping to 267 meV at x = 0.20, indicating structural relaxation and the reopening of alternative conduction pathways. Dielectric constant (ε_r′) and loss (ε_r″) both showed significant dispersion influenced by Maxwell–Wagner (M-W) polarization and thermally activated hopping process, with Al³⁺ ion substitution notably affecting interfacial polarization strength. Furthermore, both impedance spectroscopy and electric modulus confirmed non-Debye relaxation, with <em>T</em> -driven shifts towards higher frequencies and substitution-driven evolution from grain-boundary-dominated to grain-controlled conduction.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101700"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184315","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}

{"title":"Nitric-oxidized carbon nanomaterial for thorium(IV) removal from acidic water: Kinetics, isotherms, thermodynamics, and regeneration","authors":"Akram I. Abu Shawer ,&nbsp;Omar A. Alnasra ,&nbsp;Fawwaz I. Khalili ,&nbsp;Ehab A. Hamzeh ,&nbsp;Yara A. Abu Shawar ,&nbsp;Amro F. Khalili ,&nbsp;Jafar M. Aljaafreh ,&nbsp;Randa M. Abu Kariem","doi":"10.1016/j.nanoso.2026.101656","DOIUrl":"10.1016/j.nanoso.2026.101656","url":null,"abstract":"<div><div>Nanoporous carbons derived from olive pomace were evaluated as thorium(IV) sorbents under mildly acidic conditions (pH 4), comparing the parent biochar with its nitric-acid–oxidized analogue (Bio-N). Multiscale characterization (gas sorption, X-ray diffraction, and vibrational spectroscopy) showed that oxidation increased Brunauer–Emmett–Teller (BET) surface area and pore volume and elevated cation-exchange capacity while preserving particle size, thereby enriching accessible oxygen-donor nanodomains for metal coordination. Batch uptake followed the pseudo-second-order (PSO) kinetic model (R² = 0.999), with experimental capacities of 118–124 mg g⁻¹ for biochar and 544–580 mg g⁻¹ for Bio-N across 25–45 °C. Langmuir analysis at 25 °C yielded apparent monolayer capacities of 135 and 1000 mg g⁻¹ , respectively. Equilibrium fits (Freundlich, Dubinin–Radushkevich, Temkin) and thermodynamic parameters indicated spontaneous, endothermic adsorption with more negative Gibbs free energy at higher temperature and large positive entropy, consistent with partial desolvation within nanoconfined, oxygenated pores (ΔH° = 7.2 vs 89.5 kJ mol⁻¹; ΔS° = 59.8 vs 326.7 J mol⁻¹ K⁻¹ for biochar vs Bio-N). Short fixed-bed trials achieved quantitative removal, and nitric-acid regeneration was effective: increasing HNO₃ from 0.1 to 1.0 mol L⁻¹ raised early-fraction cumulative desorption from 86 to 90% to 98–100%. Overall, nitric-acid oxidation confers strong capacity and temperature leverage, while the parent material offers robust, reusable performance — together providing a low-cost, locally sourced nanocarbon platform for radionuclide polishing and efficient single-pass column operation.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101656"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147798013","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}

{"title":"Fluorescent nickel ion doped carbon dots from Withania somnifera for dye degradation, bio-imaging, hydrogen peroxide sensing and ctDNA binding studies","authors":"Kirubaharan Daphne Jacinth Gracia ,&nbsp;Seth Sheeba Thavamani ,&nbsp;Rajendran Muthukumar Sivaraman ,&nbsp;Thomas Peter Amaladhas","doi":"10.1016/j.nanoso.2026.101688","DOIUrl":"10.1016/j.nanoso.2026.101688","url":null,"abstract":"<div><div>The current work focuses on the synthesis, characterization of nickel, nitrogen doped carbon dots (Ni-NCDs) from <em>Withania somnifera</em> and their applications as photocatalyst to degrade methyl orange, DNA binding agent, biomarkers for SKMEL cells and electrochemical hydrogen peroxide sensor. The electronic properties, surface functionalities, morphology, elemental constituents and bonding nature of the synthesized Ni-NCDs were characterized with UV-Visible spectroscopy, fluorescence spectroscopy, Fourier Transform Infra Red spectroscopy, X-ray Photoelectron Spectroscopy, High Resolution Transmission Electron Microscopy, EDX and Raman spectroscopy. The Ni-NCDs exhibited an average particle size of about 2.29 nm with a quantum yield of 38%. The synthesized Ni-NCDs served as an effective photocatalyst for methyl orange dye degradation under UV light irradiation with 98.2% efficiency in 60 min at pH 3.4. The degradation followed pseudo first order kinetics with a rate constant of 5.67 × 10⁻² min⁻¹. The intercalative binding interaction between the Ni-NCDs and ctDNA quantified with Benesi-Hildebrand plot was calculated to be 15.0 (mg/mL)⁻¹. The excellent reducing ability of the Ni-NCDs was extended to electrochemically sense hydrogen peroxide with a detection limit of 7.65 × 10⁻⁵ M. The excellent biocompatible nature of Ni-NCDs was confirmed with MTT assay, as the cell viability towards skin cancer SKMEL cells was 47.22%. The fluorescent Ni-NCDs further acted as fluorescent biomarkers for SKMEL cells.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101688"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147951070","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}

{"title":"Photocatalytic degradation of Rhodamine 6 G dye and antibacterial study by using Chitosan/Ga2O3/WO3 nanocomposite","authors":"V. Subha ,&nbsp;D. Thillaikkarasi ,&nbsp;M. Jothi ,&nbsp;M. Nagoor Meeran ,&nbsp;S. Jagan Raj","doi":"10.1016/j.nanoso.2026.101704","DOIUrl":"10.1016/j.nanoso.2026.101704","url":null,"abstract":"<div><div>This study effectively constructed Chitosan@Ga₂O₃/WO₃ ternary nanocomposites by solution assisted precipitation and performed comprehensive characterization. The composite was utilized for the photocatalytic degradation of Rhodamine 6 G dye under ultraviolet light irradiation. The natural biopolymer chitosan acted as a stabilizing agent, promoting the production of efficient heterojunctions between Ga₂O₃ and WO₃. The combination demonstrated superior photocatalytic efficacy owing to higher charge separation, increased light absorption, and a decreased band gap. The optimization of parameters including pH, dye concentration, catalyst dosage, and sacrificial agents resulted in a peak degradation efficiency of 96% after 120 min. Studies on reactive species trapping corroborated the suggested process, while reusability assessments validated catalyst stability across five cycles. Additionally, antibacterial experiments revealed concentration-dependent suppression of Pseudomonas aeruginosa and Bacillus cereus, underscoring the material's dual activity in pollution removal and microbial disinfection.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101704"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184123","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}

{"title":"Nanofluids as game-changers for sustainable energy systems: Enhancing efficiency and reducing carbon footprints","authors":"Ilancheliyan Samylingam ,&nbsp;Kumaran Kadirgama ,&nbsp;Lingenthiran Samylingam ,&nbsp;Navid Aslfattahi ,&nbsp;Chee Kuang Kok ,&nbsp;Mohd Fairusham Ghazali ,&nbsp;Maryam Sadat Kiai","doi":"10.1016/j.nanoso.2026.101677","DOIUrl":"10.1016/j.nanoso.2026.101677","url":null,"abstract":"<div><div>The increasing demand for sustainable, energy-efficient systems has driven interest in advanced heat transfer fluids that have overcome the limitations of conventional working media. Nanofluids have shown considerable potential due to their enhanced thermophysical properties; however, practical deployment is constrained by stability, environmental impact, economic feasibility, and scalability challenges. This review aims to critically synthesize recent research on nanofluids for sustainable energy systems from a system-level and interdisciplinary perspective. A comprehensive review methodology is adopted, integrating experimental, numerical, and analytical studies of nanoparticle materials, base fluids, preparation methods, and applications, along with insights from life-cycle analysis, toxicity assessment, techno-economic evaluation, and scalability considerations. The findings indicate that although efficiency improvements of 10–30% are frequently reported, these gains are highly dependent on experimental conditions and system configuration and may not directly translate into real-world applications. Carbon-based and hybrid nanofluids exhibit strong performance at low concentrations, while bio-based formulations offer more sustainable pathways. The review is relevant to photovoltaic/thermal systems, wind turbine cooling, geothermal energy extraction, and industrial waste heat recovery.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"46 ","pages":"Article 101677"},"PeriodicalIF":5.45,"publicationDate":"2026-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147849703","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}