Journal of Nanoparticle Research最新文献

{"title":"Kaolin-supported Ag–Cu bimetallic nanocomposite as efficient and reusable catalyst for Congo red reduction in water","authors":"Azanaw Girmaw Mengstu,&nbsp;Bewketu Mehari,&nbsp;Minaleshewa Atlabachew,&nbsp;Zinabu Gashaw Asmare,&nbsp;Abrha Berhe,&nbsp;Abrham Biresaw Gebrye,&nbsp;Yong Liu,&nbsp;Tibebu Shiferaw,&nbsp;Itziar Ruisanchez","doi":"10.1007/s11051-026-06752-5","DOIUrl":"10.1007/s11051-026-06752-5","url":null,"abstract":"<div><p>Freshwater ecosystems are increasingly threatened by the discharge of untreated textile effluents containing persistent organic dyes. In this work, a cost-effective and reusable heterogeneous catalyst was developed by synthesizing kaolin-supported Ag–Cu bimetallic nanoparticles for the catalytic reduction of Congo red (CR) in aqueous solution. XRD analysis confirmed the formation of crystalline Ag–Cu nanoparticles with an average crystallite size of 9.5 nm. SEM revealed a rough and porous morphology of the Ag–Cu/kaolin nanocomposite, while EDS verified the successful incorporation of Ag and Cu onto the kaolin support. The catalytic activity was evaluated using NaBH₄ as a reducing agent, and the reduction of CR followed pseudo-first-order kinetics with a rate constant of 1.01 min⁻¹. Thermodynamic parameters indicated an endothermic process with a positive activation free energy, suggesting the presence of an energy barrier in the rate-determining step. The catalyst exhibited excellent stability and reusability over seven consecutive cycles without significant loss of activity. The findings highlight the potential of kaolin-supported Ag–Cu nanocomposites as efficient, stable, and sustainable catalysts for wastewater treatment via catalytic dye reduction.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148838279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Two clocks for one reaction: resolving Turkevich gold-nanoparticle kinetics via operando colour-space and structural-similarity video analysis","authors":"Chairul Ichsan,&nbsp;Delima Engga Maretha,&nbsp;Bagus Rizkyantoro,&nbsp;Irfan Muzakki,&nbsp;Rindy Apriliani,&nbsp;Nabillah Bilqis Haffizhoh","doi":"10.1007/s11051-026-06744-5","DOIUrl":"10.1007/s11051-026-06744-5","url":null,"abstract":"<div><p>The citrate (Turkevich) reduction of tetrachloroauric acid is the most widely used route to spherical gold nanoparticles (AuNPs), and its progress is routinely judged by eye through a sequence of colour changes. Here we convert that familiar visual cue into a quantitative, operando record of the reaction, showing that a single benchtop recording is sufficient to resolve the full kinetics. An ordinary 601 s synthesis video was decomposed frame by frame into ten colour representations spanning device, broadcast and perceptual families — linear RGB, the broadcast spaces YUV, YIQ and Y′CbCr, and the perceptual spaces CIELAB, CIELCh and Oklab/Oklch. In parallel, the structural similarity index (SSIM) was computed against a robust steady-state reference, both on luminance alone and on full colour. The colour trajectory resolves five kinetic phases: citrate-driven yellow fading, a nucleation-coupled lightness collapse, a dark pre-plasmonic latency, surface-plasmon red growth, and maturation. First-order, logistic and Finke–Watzky models fit the reduction (t_½ ≈ 21 s), nucleation (t_nuc ≈ 57 s) and autocatalytic red growth (t½ ≈ 240 s); the growth fit reveals slow nucleation and fast autocatalysis (k2A0/k1 ≈ 47), the diagnostic Finke–Watzky signature. A central finding is that luminance-only SSIM saturates at nucleation and is blind to the later red growth, whereas chromatic metrics continue to evolve — two distinct “clocks” for one reaction. A 52-configuration sensitivity analysis, in which the region of interest is varied in area over a 2590-fold range, translated across the entire imaged solution and altered in shape, shows that the extracted timings are essentially invariant — the nucleation midpoint varies by 0.35% and the growth half-time by 0.80% — so that the choice of region sets the contrast of the measurement rather than the kinetics it returns. Hue angle is the single most discriminating descriptor for the growth stage, while inexpensive broadcast chrominance channels carry nearly equivalent information. Beyond endpoint benchmarking against UV–visible spectroscopy, established here by UV–visible characterisation of ten nominally identical batches, this work demonstrates that operando colour-space and structural-similarity analysis recovers the complete, multi-stage kinetics of a colloidal synthesis from video alone.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acute toxicity and tissue deposition of graphene oxide decorated with platinum nanoparticles following intraperitoneal administration in rats","authors":"Wiktoria Fraczek,&nbsp;Ewa Sawosz Chwalibog,&nbsp;Marta Kutwin,&nbsp;Slawomir Jaworski,&nbsp;Maciej Szmidt,&nbsp;Justyna Sokolowska,&nbsp;Marta Mazurkiewicz–Pawlicka,&nbsp;Marlena Zielinska-Gorska,&nbsp;Tomasz Hutsch,&nbsp;Mateusz Wierzbicki,&nbsp;Patryk Krzeminski,&nbsp;Anna Hotowy,&nbsp;Marta Grodzik","doi":"10.1007/s11051-026-06735-6","DOIUrl":"10.1007/s11051-026-06735-6","url":null,"abstract":"<div><p>Recently developed novel graphene oxide decorated with platinum nanoparticles (GO/PtNPs) has been recognized for its anticancer properties. Therefore, in vivo studies assessing the toxicity and tissue deposition of these particles are needed. Using a fixed-dose acute toxicity design, rats received a single intraperitonealdose of 300 mg/kg and 2000 mg/kg. After 14 days, the rats were euthanized and analyzed both grossly and microscopically. All rats survived the study, showed no abnormal clinical or behavioral symptoms, and gained body weight normally (22–30 g). GO/PtNPs accumulation was observed predominantly within the abdominal cavity, especially near the injection site, where disseminated black deposits measuring 1–7 mm were detected. Most GO/PtNPs deposits were located within granulomas, either extracellularly or were phagocytosedby macrophages. Macrophages laden with GO/PtNPs were also identified in various organs including mesenteric lymph nodes, liver, spleen, lungs, and kidneys. Degenerative changes of varying degrees were noted in both cardiac and skeletal muscles. Other observations included hydropic degeneration in the liver, acute tubular necrosis in the kidneys of high-dose animals, and hyperemia accompanied by a cribriform state in the brain. The latter was also associated with hemorrhage and gliosis. Notably, no nanoparticle deposits were identified within the brain tissue or cerebral vessel lumens. These findings suggest that, at doses considerably higher than anticipated therapeutic levels, GO/PtNPs can induce marked tissue deposition and selected organ toxicities. Therefore, further studies using therapeutically relevant doses and route-specific experimental designs are required before any medical application of GO/PtNPs can be considered.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11051-026-06735-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microfluidic synthesis and temperature-controlled morphological evolution of formamidinium lead bromide nanocrystals","authors":"Hangtong Jiang,&nbsp;Bin Liu,&nbsp;Bo Huang,&nbsp;Huichao Zhang","doi":"10.1007/s11051-026-06750-7","DOIUrl":"10.1007/s11051-026-06750-7","url":null,"abstract":"<div><p>FAPbBr₃ nanocrystals (NCs) are regarded as promising of green-emitting materials with excellent application potential. However, their microfluidic synthesis has received relatively little research attention, and the corresponding growth process also remains poorly understood. To address this, a microfluidic system was developed for the synthesis of FAPbBr₃ NCs, in which the growth process is divided into two stages at distinct temperatures: initial growth and second-stage growth. The morphology of FAPbBr₃ NCs is correlated with the temperatures of these two growth stages. A lower initial growth temperature (80 °C) favors anisotropic growth of NCs, and this effect is difficult to eliminate by subsequent second-stage growth at 130 °C or 210 °C. At an initial growth temperature of 160 °C, a similar phenomenon is observed unless the duration of this stage is prolonged, in which case cube-like NCs form. When the second-stage growth temperature is increased to 250 °C, large NCs with irregular morphology and an average size of 70 nm are formed.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Silver-decorated graphitic carbon nitride nanosheets: an effective deposition strategy and photocatalytic activity enhancement","authors":"Refik Arat","doi":"10.1007/s11051-026-06755-2","DOIUrl":"10.1007/s11051-026-06755-2","url":null,"abstract":"<div><p>The development of cost-effective and environmentally friendly photocatalysts has attracted considerable attention for the removal of organic pollutants from aquatic environments. Among various photocatalytic materials, graphitic carbon nitride (g-C₃N₄) has emerged as a promising candidate due to its unique two-dimensional layered structure, visible-light activity, and ease of synthesis from inexpensive precursors. However, its practical application is restricted by intrinsic limitations, including rapid electron–hole recombination, limited surface area, and a relatively wide band gap. To overcome these drawbacks, this study focuses on the modification of g-C₃N₄ nanosheets with silver nanoparticles (AgNPs) to enhance their photocatalytic performance. Herein, g-C₃N₄ was synthesized via thermal condensation of urea and subsequently decorated with AgNPs utilizing a sodium naphthalenide/N,N-Dimethylacetamide (Na–Np/DMAc) reduction system, which is the rapid, single-step deposition of AgNPs onto the g-C₃N₄ nanosheets at ambient temperature, while concurently allowing for facile visual monitoring of the reduction process. Structural and surface characterizations confirmed the successful incorporation of AgNPs onto the g-C₃N₄ nanosheets. The incorporation of AgNPs significantly altered the electronic structure of g-C₃N₄ by narrowing its band gap (2.40 eV) and extending the visible-light absorption range. Photocatalytic activity was evaluated using Rhodamine B (RhB) dye as a model organic contaminant under visible-light irradiation. Compared to neat g-C₃N₄ (k_app = 4.41 × 10^–3 min^–1), the AgNP-loaded sample demonstrated a 1.555-fold increase in the apparent pseudo-first-order rate constant (k_app = 6.86 × 10^–3 min^–1) for RhB degradation, which can be attributed to the plasmonic effect of AgNPs, improved charge carrier separation, and enhanced light-harvesting ability. These results highlight the potential of AgNPs decorated g-C₃N₄ as an efficient and sustainable photocatalyst for the degradation of hazardous organic pollutants in water treatment applications. Furthermore, the facile synthesis route employed here offers a scalable approach to designing advanced metal–semiconductor nanocomposites with improved photocatalytic efficiency.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Targeting gold nanoparticles to glutamate receptors on human astrocytes using small-molecule ligands","authors":"Okhil K. Nag,&nbsp;Ryan N. Porell,&nbsp;Eunkeu Oh,&nbsp;James B. Delehanty","doi":"10.1007/s11051-026-06743-6","DOIUrl":"10.1007/s11051-026-06743-6","url":null,"abstract":"<div><p>In this study, we designed and fabricated gold nanoparticle (AuNP) bioconjugates that are targeted to glutamate receptors, specifically to α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid-type glutamate receptors (AMPARs). These receptors are located predominantly on synaptic and nonsynaptic membranes of neurons and glial cells—the support cells for neurons. AMPARs are crucial for most excitatory synaptic transmission events, and the controlled localization of glutamate receptors is vital for the development and plasticity of the central nervous system. The photoactivation of plasma membrane-tethered AuNPs for the photothermally driven depolarization of membrane potential has recently emerged as a novel platform for the controlled actuation of electrically active cells, including neurons and muscle cells. However, the targeting of AuNPs to specific cell types, particularly to discrete subsets of neurons, remains a considerable challenge. Herein, we report the development of a facile, copper-free click chemistry-based bioconjugation strategy to decorate spherical AuNPs (20 nm diameter) with an AMPAR-specific ligand (2,3-dioxo-6-nitro-1,2,3,4-tetrahydrobenzo[f]quinoxaline-7-sulfonamide (NBQX)) to target the AuNPs to cultured AMPAR-expressing primary human astrocytes. We demonstrate the robust and specific labeling of human astrocytes with the AuNP-NBQX bioconjugates, confirmed by comparison to cells incubated with AuNPs lacking the NBQX AMPAR-targeting moiety. Further, we show the ability of the bioconjugates to facilitate laser-induced photothermal membrane depolarization via the surface plasmonic effects of the membrane-tethered AuNPs while inducing no concomitant cytotoxicity.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization and validation of a DLS method for nanometric colloidal silica sizing using factorial design","authors":"Adriana Coatrini Thomazi,&nbsp;Joana Dias Bresolin,&nbsp;Daiane Placido Torres","doi":"10.1007/s11051-026-06736-5","DOIUrl":"10.1007/s11051-026-06736-5","url":null,"abstract":"<div><p>Particle size analysis by dynamic light scattering (DLS) is a fundamental technique for characterizing colloidal systems and nanodispersions. This study presents the development, optimization, and validation of a DLS method for measuring the hydrodynamic diameter (<i>Z</i>-average) and polydispersity index (PDI) of nanometric colloidal silica. A 2⁴⁻¹ fractional factorial design was employed to evaluate the influence of four critical factors: nanosilica suspension concentration, ultrasonication time, rest time after sonication, and equipment equilibration time. Statistical results demonstrated that only the nanosilica concentration had a significant effect on the particle size (<i>Z</i>-average), indicating that the method is robust regarding the other evaluated parameters. Further optimization of the concentration (ranging from 0.01 to 3.0% <i>v</i>/<i>v</i>) revealed that excessive dilutions (&lt; 0.1% <i>v</i>/<i>v</i>) led to an unexpected increase in particle size, likely due to electrostatic destabilization of the suspension. Stable <i>Z</i>-average (~ 19 nm) and PDI values were observed between 0.5 and 3.0% <i>v</i>/<i>v</i>. The difference between the measured hydrodynamic diameter and the nominal particle size of 11 nm can be attributed to the characteristic hydrodynamic shell and minor stable clusters measured by DLS, without compromising method precision. The 1.0% <i>v</i>/<i>v</i> concentration was established as the optimal condition to balance analytical response and sample conservation. The use of factorial design as a tool for robustness and repeatability assessment enabled full method validation, meeting technical requirements in a context where traditional validation parameters—such as linearity, range, and detection limits—are often not applicable to DLS.\u0000</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11051-026-06736-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Carboxymethyl cellulose stabilized copper nanocomposite CMC@Cu0 for the catalytic degradation of Congo red and crystal violet dyes","authors":"Abdur Rauf,&nbsp;Shahkar Usama,&nbsp;Zubair Ahmad,&nbsp;Muhammad Shafique,&nbsp;Imran Ullah,&nbsp;Cai-Hong Zhan,&nbsp;Yahya S. Al-Awthan,&nbsp;Omar S. Bahattab","doi":"10.1007/s11051-026-06740-9","DOIUrl":"10.1007/s11051-026-06740-9","url":null,"abstract":"<div><p>In this work, carboxymethyl cellulose (CMC) was used as a support for zero-valent copper nanoparticles (Cu⁰ NPs), forming CMC@Cu⁰ nanocomposite hydrogel membranes. The catalysts were prepared through the ionotropic gelation of CMC in the presence of Cu²⁺ ions, followed by solvent casting, drying, swelling, and then chemical reduction with NaBH₄ in aqueous solution. By using FTIR, XRD, and SEM, structural and morphological characteristics were studied. The catalytic performance of three different copper loadings (0.10 M, 0.05 M, and 0.025 M CuSO₄) was evaluated, with CMC@Cu⁰-1 (0.10 M) showing the highest activity. The CMC@Cu⁰ nanocomposite attained 93.4% degradation of Congo red (CR, 10 mg L⁻¹) within 14 min and 93% degradation of crystal violet (CV, 10 mg L⁻¹) within 13 min, using a very low NaBH₄ concentration of only 0.045 mM. The degradation followed pseudo-first-order kinetics with ostensible rate constants of 0.196 min⁻¹ (CR, <i>R</i>^<i>2</i> = 0.976) and 0.2007 min⁻¹ (CV, <i>R</i>^<i>2</i> = 0.995). EDX analysis after the fourth catalytic cycle confirmed the retention of copper within the CMC matrix (40.75 wt% Cu), revealing good structural stability and resistance to leaching. Compared with reported catalysts that generally require 10–100 mM NaBH₄, the present system reduces reagent consumption by up to three orders of magnitude while maintaining rapid degradation rates. These findings show that the CMC@Cu⁰ membranes not only act as efficient catalysts for dye detoxification but also have significant potential for sustainable wastewater treatment applications.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of colloidal stability on Fe₃O₄ nanoparticle interactions with lipid vesicles: implications for DLS interpretation","authors":"Dominik Michálek,&nbsp;Zuzana Garaiová,&nbsp;Veronika Šubjaková,&nbsp;Daniel Kosnáč,&nbsp;Martin Kopáni,&nbsp;Štefan Polák,&nbsp;Tibor Hianik","doi":"10.1007/s11051-026-06745-4","DOIUrl":"10.1007/s11051-026-06745-4","url":null,"abstract":"<div><p>Magnetite nanoparticles (Fe₃O₄ NPs) are widely encountered in environmental and biomedical systems, where their colloidal state critically influences interactions with biological membranes. However, nanoparticle–membrane interactions are often assessed by dynamic light scattering (DLS), whose intensity-weighted output can be strongly biased by small populations of large aggregates. Here, we directly compare aggregation-prone, unstabilized Fe₃O₄ nanoparticles with carboxyl-functionalized Fe₃O₄-COOH nanoparticles, which exhibit improved colloidal stability, in their interactions with large unilamellar vesicles (LUVs) composed of zwitterionic (PC), anionic DOPG, and cationic DOTAP lipids. Bare Fe₃O₄ formed micron-scale aggregates and induced pronounced increases in DLS-derived Z-average diameter and polydispersity, effects dominated by highly scattering clusters rather than uniform vesicle growth. In contrast, well-dispersed Fe₃O₄-COOH produced modest decreases in apparent size for PC and DOPG vesicle dispersions, consistent with population-weighting effects combined with subtle interfacial interactions, without evidence of large-scale vesicle destabilization. For DOTAP vesicles, Fe₃O₄-COOH induced progressive increases in both Z-average and number-weighted size, accompanied by ζ-potential shifts and SEM-observed composite structures, indicating genuine electrostatically driven nanoparticle–vesicle association. Together, these results demonstrate that nanoparticle dispersity governs both apparent and actual membrane interaction outcomes and show that DLS-derived size changes must be interpreted in the context of aggregation, population weighting, and complementary measurements.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic effect of CuO@NiO@Fe2O3 heterostructure on photocatalytic efficiency and cyclic stability in wastewater treatment","authors":"Kornkanok Boonserm,&nbsp;Panglam Charoenchit,&nbsp;Anan Sutcha,&nbsp;Jaru Jutimoosik,&nbsp;Rarm Phinjaroenphan","doi":"10.1007/s11051-026-06742-7","DOIUrl":"10.1007/s11051-026-06742-7","url":null,"abstract":"<div><p>Industrial organic dye contamination remains a significant threat to global freshwater resources, necessitating advanced remediation technologies. While multimetallic systems offer enhanced performance, the potential of CuO@NiO@Fe₂O₃ trimetallic nanoparticles for targeted dye degradation has not been extensively explored. We hypothesized that the synergistic heterojunction between these three oxides would significantly inhibit charge-carrier recombination and enhance photocatalytic activity. The CuO@NiO@Fe₂O₃ nanoalloy was synthesized via a wet chemical reduction method and characterized to evaluate its efficiency in degrading methylene blue (MB) under UV irradiation. The ternary composite achieved a photocatalytic decolorization efficiency of 89.4% with a pseudo-first-order rate constant (<i>k</i>₁) of 0.0107 min⁻¹ under optimized conditions (pH 8, MB concentration of 40 ppm, catalyst dosage of 0.04 g, and 180 min of irradiation). Furthermore, the catalyst demonstrated excellent recyclability, maintaining a decolorization efficiency above 84% after five consecutive photocatalytic cycles with a cumulative mass loss of less than 4.5%. This work introduces a high-performance, magnetically recoverable, and cost-effective heterostructure that advances the development of robust materials for sustainable textile wastewater treatment.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 9","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}