Journal of Nanoparticle Research最新文献

{"title":"Catalytic reduction of environmentally relevant nitroimidazole pollutant using bimetallic Co/Cu-metal–organic framework nanocatalyst","authors":"Safaa Hussein Salah El-Din,&nbsp;Dina A. MouslyEl Mously,&nbsp;Amany Morsi,&nbsp;Amr M. Mahmoud","doi":"10.1007/s11051-026-06709-8","DOIUrl":"10.1007/s11051-026-06709-8","url":null,"abstract":"<div><p>Rising levels of antibiotic residues in environmental water seriously threaten human and ecosystem health, necessitating effective wastewater treatment strategies. Secnidazole (SEC), a nitroimidazole antibiotic widely used in human and veterinary medicine, is considered an emerging environmental pollutant due to its persistence and potential ecological risks. In this study, a solvothermal approach was employed to synthesize a bimetallic Co/Cu-HKUST-1 metal–organic framework nanocomposite (Co/Cu-HKUST-1 MOF) using copper and cobalt metal nodes with benzene tricarboxylic acid as the organic linker in the presence of polyvinylpyrrolidone as a growth-directing agent. The synthesized nanocomposite was characterized using Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The prepared Co/Cu-HKUST-1 MOF demonstrated remarkable catalytic efficiency toward SEC reduction using sodium borohydride as a reducing agent, with the reaction monitored by UV–Vis spectroscopy. Complete reduction was achieved within 420 s with a calculated rate constant (<i>k</i>) of 0.008 s⁻¹. Furthermore, the catalyst exhibited excellent stability and reusability over five successive cycles with minimal loss in catalytic activity. These findings support the potential application of Co/Cu-HKUST-1 MOF as a cost-effective and environmentally friendly nanocatalyst for wastewater remediation within the One Health framework.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465297","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 of beads polyvinyl alcohol/alginate hydrogel nano-fertilizers incorporated zinc oxide nanoparticles for sustainable plant growth","authors":"Nur Syafiqah Farhanah Dzulkharnien,&nbsp;Rasul Sauket Ali,&nbsp;Rosiah Rohani,&nbsp;Peer Mohamed,&nbsp;Alya Athirah Mohd Idris","doi":"10.1007/s11051-026-06706-x","DOIUrl":"10.1007/s11051-026-06706-x","url":null,"abstract":"&lt;div&gt;&lt;h3&gt;Background&lt;/h3&gt;&lt;p&gt;Nano-fertilizers, which contain nanoparticles (NPs), are increasingly recognized for their potential to improve crop yields and decreasing reliance on traditional nitrogen-, phosphorus-, and potassium (NPK)-based chemical fertilizers. Traditional NPK fertilizers often suffer from poor nutrient solubility in soil water, causing suboptimal nutrient uptake. As such, the current work used the central composite design from response surface method (CCD-RSM) to produce an optimized slow-release ZnO NPs/PVA/Alg hydrogel nano-fertilizer comprising zinc oxide NPs (ZnO NPs) and polyvinyl alcohol/alginate (PVA/Alg).&lt;/p&gt;&lt;h3&gt;Methodology&lt;/h3&gt;&lt;p&gt;Three key input factors, which are the concentration of ZnO NPs (&lt;i&gt;X&lt;/i&gt;&lt;sub&gt;1&lt;/sub&gt; = 20,60,100 ppm), the amount of Alg (&lt;i&gt;X&lt;/i&gt;&lt;sub&gt;2&lt;/sub&gt; = 0.1,0.55,1.0 g), and the amount of PVA (&lt;i&gt;X&lt;/i&gt;&lt;sub&gt;3&lt;/sub&gt; = 0.1,0.55,1.0 g), were used to investigate the output responses, which were the hydrogel nano-fertilizers yield (&lt;i&gt;Y&lt;/i&gt;&lt;sub&gt;1&lt;/sub&gt;), concentration of zinc ions (Zn&lt;sup&gt;2+&lt;/sup&gt;) released over 24 h (&lt;i&gt;Y&lt;/i&gt;&lt;sub&gt;2&lt;/sub&gt;), and swelling ratio (&lt;i&gt;α&lt;/i&gt;) (&lt;i&gt;Y&lt;/i&gt;&lt;sub&gt;3&lt;/sub&gt;). Several characterization tools such as field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX) mapping, and X-ray diffraction (XRD) were used to confirm the intrinsic characteristics of the optimized ZnO NPs/PVA/Alg hydrogel nano-fertilizers. The disc diffusion method was then used to conduct an antibacterial study of the hydrogels, while the efficiency of hydrogel was observed on the number of leaves and height of water spinach (&lt;i&gt;Ipomoea aquatica&lt;/i&gt;) and mung bean (&lt;i&gt;Vigna radiata&lt;/i&gt; L.) plants.&lt;/p&gt;&lt;h3&gt;Results&lt;/h3&gt;&lt;p&gt;The optimal synthesis parameters were at &lt;i&gt;X&lt;/i&gt;&lt;sub&gt;1&lt;/sub&gt; = 20 ppm, &lt;i&gt;X&lt;/i&gt;&lt;sub&gt;2&lt;/sub&gt; = 1.0 g, and &lt;i&gt;X&lt;/i&gt;&lt;sub&gt;3&lt;/sub&gt; = 0.891 g, which produced &lt;i&gt;Y&lt;/i&gt;&lt;sub&gt;1&lt;/sub&gt; = 31.97 g, &lt;i&gt;Y&lt;/i&gt;&lt;sub&gt;2&lt;/sub&gt; = 0.025 mg/L, and &lt;i&gt;Y&lt;/i&gt;&lt;sub&gt;3&lt;/sub&gt; = 0.23. The optimized ZnO NPs/PVA/Alg hydrogel was found to have an amorphous folded morphology that helps it retain water. The antibacterial study revealed that the optimized ZnO NPs/PVA/Alg hydrogel nano-fertilizers had zones of inhibition (ZOI) measuring 24 and 29 mm against &lt;i&gt;Escherichia coli&lt;/i&gt; (&lt;i&gt;E. coli&lt;/i&gt;) and &lt;i&gt;Staphylococcus aureus&lt;/i&gt; (&lt;i&gt;S. aureus&lt;/i&gt;), respectively, which were better than ZnO NPs and PVA/Alg. This pronounced antibacterial activity highlights the hydrogel's potential for agricultural pathogen control, particularly concerning potential collateral effects on non-target, beneficial soil microorganisms. Lastly, the heights of water spinach and mung bean plants post-application using the ZnO NPs/PVA/Alg hydrogel nano-fertilizers were 21.0 cm and 26.9 cm, respectively. This was almost similar to the plants grown using traditional NPK fertilizers.&lt;/p&gt;&lt;h3&gt;Conclusion&lt;/h3&gt;&lt;p&gt;Therefore, these slow-release hydrogel nano-fertilizers are not only environmentally friendly with use of well-known biodegradable and b","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465426","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":"Global structural optimization and stability study of Au-Cu bimetallic clusters based on Elite Niching Adaptive Differential Evolution","authors":"Yuxiang Tang,&nbsp;Yuxin Zhang,&nbsp;Hua Shi,&nbsp;Yuheng Chen,&nbsp;Xiaomin Wu","doi":"10.1007/s11051-026-06711-0","DOIUrl":"10.1007/s11051-026-06711-0","url":null,"abstract":"<div><p>Au-Cu bimetallic clusters are attractive for catalysis and electronic applications owing to their synergistic effects and tunable structures. We propose an improved Elite Niching Adaptive Differential Evolution (ENADE) algorithm for their structural optimization. Building on conventional differential evolution, ENADE introduces an elite pool to improve convergence, a multi-population parallel strategy to strengthen global search, combined sphere-cutting crossover and atomic-exchange operators, and a restart mechanism coupled with niching to prevent premature convergence. Using the Gupta potential, the algorithm was validated on Au-Cu sequences (<i>N</i> = 13, 19, 23, 38), benchmark systems with well-characterized global minima. ENADE reached a 70% success rate for the <i>N</i> = 38 global minimum, and across 20 independent <i>N</i> = 55 runs the best-energy standard deviation was only 0.002 eV, significantly outperforming basin-hopping, genetic-algorithm, and conventional DE baselines. The located structures serve as a consistency check rather than new structural claims: they reproduce the known Cu-core/Au-surface segregation driven by size mismatch and the expected truncated-octahedral <i>N</i> = 38 motif, with alloy clusters more stable than pure-metal counterparts. The main contribution is therefore the ENADE framework and its robustness on chemically ordered bimetallic landscapes.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465427","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":"Trends and thematic development of mesoporous silica nanoparticles for drug delivery systems: a scientometric and patent landscape review","authors":"Munasir,&nbsp;Syaiful Adam Maulana,&nbsp;Rizqi Aulia Nurlaili,&nbsp;Ahmad Taufiq,&nbsp;Nuhaa Faaizatunnisa,&nbsp;Budi Purnama,&nbsp;Zainul Arifin Imam Supardi,&nbsp;Muhammad Naufal Ariesta,&nbsp;Rita Maliza","doi":"10.1007/s11051-026-06707-w","DOIUrl":"10.1007/s11051-026-06707-w","url":null,"abstract":"<div><p>Mesoporous silica nanoparticles (MSNs) are a versatile class of silica-based nanomaterials characterized by tunable mesoporous architectures, large surface area, and high cargo-loading capacity, making them attractive platforms for drug delivery systems (DDS). Using the Scopus database, 1,715 publications were retrieved and analyzed with VOSviewer to evaluate publication trends, influential journals, leading authors, institutional contributions, and thematic evolution. The analysis shows sustained global growth, with China, the United States, and Spain as major contributors. Keyword co-occurrence mapping indicates enduring focus on controlled release, surface engineering, and cancer-targeted therapy. Patent analysis via Lens.org identified 121 patents, reflecting rising translational interest and technological progression from early charged-particle designs to advanced systems enabling targeted delivery, blood–brain barrier penetration, immune-mediated transport, and multi-agent encapsulation. Recent patents further highlight scalable manufacturing strategies, signaling movement toward clinical and commercial feasibility. Overall, this study clarifies the intellectual landscape and technological trajectory.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148465478","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":"Polyelectrolyte-modified zinc oxide nanoparticles for efficient removal of Reactive Green 19 dye from wastewater","authors":"Ahmed F. Halbus,&nbsp;Zahraa H. Athab","doi":"10.1007/s11051-026-06710-1","DOIUrl":"10.1007/s11051-026-06710-1","url":null,"abstract":"<div><p>Reactive dye discharges from textile industries pose significant environmental risks due to their stability, toxicity, and resistance to conventional treatment methods. Zinc oxide nanoparticles (ZnONPs) were synthesized via precipitation and subsequently functionalized with a polyelectrolyte to improve their surface characteristics and adsorption performance. The synthesized nanomaterials were characterized using dynamic light scattering (DLS), BET, XRD, TEM, FTIR, and UV–visible spectroscopy. The research focused on understanding the factors and mechanisms governing the adsorption activity of polyelectrolyte-modified ZnONPs, prepared using layer-by-layer deposition of poly (sodium 4-styrenesulfonate) (PSS) and poly (allylamine hydrochloride) (PAH). The nanoparticles were modified using a two-layer polyelectrolyte coating system, consisting of PSS as the first layer and PAH as the second layer. The study involved preparing bare ZnONPs, ZnONPs modified with PSS and PAH and investigating their performance in removing Reactive Green 19 (RG19) dye from water. Batch adsorption experiments evaluated the effects of contact time, adsorbent dosage, and initial dye concentration. The polyelectrolyte-modified ZnONPs demonstrated remarkable adsorption performance for RG19 dye. The polyelectrolyte-coated ZnONPs (ZnONPs/PSS/PAH) showed outstanding adsorption, removing more than 99% of RG19 dye in one hour. Isotherm analysis indicated that the adsorption process was best described by the Freundlich model, whereas kinetic evaluation showed that it followed a pseudo-second-order model. Anionic ZnONPs/PSS exhibited significantly lower adsorption performance than cationic ZnONPs/PSS/PAH and uncoated ZnONPs. This is attributed to electrostatic repulsion between ZnONPs/PSS and RG19, whereas electrostatic attraction with cationic ZnONPs/PSS/PAH and bare ZnONPs enhances adsorption. The results confirm the good recyclability of surface-modified ZnONPs, highlighting their potential as cost-effective materials for water purification.\u0000</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380209","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":"Photosensitive anatase-TiO₂ nanomaterial: β-cyclodextrin based synthesis, characterization and photocatalytic degradation of paracetamol","authors":"Manisha Mhalsekar,&nbsp;Vrinda Borker,&nbsp;Priyanka Kole","doi":"10.1007/s11051-026-06702-1","DOIUrl":"10.1007/s11051-026-06702-1","url":null,"abstract":"<div><p>Photoactive anatase TiO₂ nanomaterial was conveniently synthesized via a simple and alternate β-cyclodextrin-based precursor method. Characterization of the material revealed the formation of pure anatase TiO₂ structure and mean particle size ≈30 nm. The photocatalytic activity of the materials was assessed by the photodegradation of Rhodamine B dye and paracetamol drug molecule as prototype pollutants under UV/visible light irradiation. The sample 2DT (anatase-TiO₂) prepared using 2%-β-cyclodextrin exhibited the highest degradation efficiency for paracetamol at pH 8. LC–MS analysis confirmed the major paracetamol degradation intermediates as 2,4-dihydroxyphenol (m/z 127.2) and maleic acid (m/z 116.9). The reactive species generated by the photocatalyst were superoxide (^•O₂⁻), holes (h⁺), and hydroxyl radicals (^•OH), which were responsible for the degradation of paracetamol. The current study offered a great prospect for the treatment of pharmaceutical effluents before their release into the environment.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380534","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":"Structural, optical, and biological properties of nanosized CuO-ZnO heterostructures formed through coprecipitation","authors":"Ena Bolaina-Lorenzo,&nbsp;Juan Carlos Carrillo-Rodríguez,&nbsp;Rebeca Betancourt-Galindo,&nbsp;Eduardo Martínez-Guerra,&nbsp;José de Jesús Kú-Herrera","doi":"10.1007/s11051-026-06696-w","DOIUrl":"10.1007/s11051-026-06696-w","url":null,"abstract":"<div><p>In this study, CuO–ZnO nanoparticles (NPs) were synthesized via coprecipitation method, using copper contents of 1, 3.25, and 6.5% w/w relative to the Zn precursor. X-ray diffraction and X-ray photoelectron spectroscopy confirmed the coexistence of distinct CuO and ZnO crystalline phases. Transmission electron microscopy revealed predominantly spherical NPs, accompanied by the emergence of anisotropic structures at Cu concentrations above 3%. UV–visible analysis showed a progressive reduction in the ZnO optical bandgap from 3.15 down to 2.91 eV as the Cu content increased. The results suggest that copper is simultaneously incorporated substitutionally into the host ZnO lattice and segregated as separate CuO phases, driving a structural transition from doped ZnO to discrete CuO–ZnO heterojunctions. Furthermore, the hybrid CuO–ZnO NPs exhibited enhanced antibacterial activity against <i>Staphylococcus aureus</i> and <i>Escherichia coli</i>, without compromising the intrinsic biocompatibility of the ZnO NPs. These findings highlight the potential of CuO–ZnO NPs for advanced antimicrobial applications in biomaterials and medical devices.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380757","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":"Properties of gold nanoparticle-embedded PVA-PVP nanocomposite films: effects of gold precursor concentration and PVA-PVP/gold nanoparticle interaction on structural, optical, and dielectric characteristics","authors":"Fatmah A. Al-Marhaby,&nbsp;Ahmed Abdelkarim,&nbsp;Roshdi Seoudi","doi":"10.1007/s11051-026-06705-y","DOIUrl":"10.1007/s11051-026-06705-y","url":null,"abstract":"<div><p>Polymer nanocomposites with noble metal nanoparticles exhibit tunable optical and electrical properties, making them promising for advanced applications. In this study, gold nanoparticles (AuNPs) were synthesized via the citrate reduction method, varying the HAuCl₄ precursor volume from 10 to 30 mL to control size and concentration. These AuNPs were incorporated into polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) blend films prepared by solution casting. The effects of different AuNPs concentration on the structural, and optical properties of were investigated using transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, UV–Vis spectroscopy, and broadband dielectric spectroscopy. TEM showed that AuNPs synthesized with 10 mL of HAuCl₄ averaged 15.2 nm, while those from 30 mL averaged 28.7 nm. XRD indicated enhanced structural ordering in the polymer matrix, and FTIR spectroscopy confirmed interactions between AuNPs and polymer functional groups. UV–Vis spectroscopy demonstrated successful plasmonic formation, showing surface plasmon resonance bands between 525 and 540 nm. The optical band gap slightly decreased from 5.27 eV to 5.21–5.25 eV with AuNP incorporation, indicating electronic interactions. Dielectric studies revealed enhanced polarization and modified charge transport due to AuNPs. Overall, the structural, optical and dielectric characteristics of the PVA–PVP nanocomposites are efficiently controlled by changing the AuNPs concentration, showing the potentiality for optoelectronic and dielectric applications.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148380739","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":"AI-accelerated search for global minimum configurations of Pt-Ni nanoclusters using embedded-atom method interatomic potential","authors":"Muhammad Usman,&nbsp;Fuyi Chen","doi":"10.1007/s11051-026-06698-8","DOIUrl":"10.1007/s11051-026-06698-8","url":null,"abstract":"<div><p>Platinum (Pt) and nickel (Ni) alloy nanoclusters are promising high-performance materials for use in modern industry because of their structural durability and thermal stability. Determining the most stable structure of Pt-Ni nanoclusters is crucial to understanding their structural and physicochemical characteristics. Investigating complex potential energy surfaces is hindered by the computing expense and sluggish convergence of classical structure-search methods. We overcame these restrictions by effectively exploring the configurational space and predicting low-energy structures of Pt-Ni nanoclusters using a deep reinforcement learning (DRL) framework based on the proximal policy optimization (PPO) algorithm with an embedded atom method (EAM) interatomic potential. In addition, machine learning interatomic potential (MACE) was used to undertake structural reoptimization and ensure accuracy and reliability. Density functional theory (DFT) energies were used to assess the real global minimum structures. The thermal stability of the anticipated global minimum structures was investigated using molecular dynamics (MD) simulations at 500 K. This comprehensive AI-based workflow with thermodynamic stability studies shows that the predicted Pt-Ni nanocluster structures possess robust stability and good high-temperature performance.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323908","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":"Green synthesis of chitosan-templated MgO nanorods for enhanced hydrazine electrochemical oxidation","authors":"Katia Mohand Saidi,&nbsp;Mohamed Zakaria Stiti,&nbsp;Bassam A. Najri,&nbsp;Hanane Mouada,&nbsp;Tahir Habila,&nbsp;Arif Kivrak,&nbsp;Ilham Ben Amor,&nbsp;Hilal Kivrak,&nbsp;Smail Khelili","doi":"10.1007/s11051-026-06703-0","DOIUrl":"10.1007/s11051-026-06703-0","url":null,"abstract":"<div><p>This work details an eco-friendly green synthesis of magnesium oxide (MgO) nanoparticles using chitosan as a template. These nanoparticles are designed as a high-performance, noble metal-free electrocatalyst for hydrazine oxidation. The synthesis process employs a sacrificial template technique during calcination, yielding a distinctive one-dimensional (1D) nanorod structure. Although some regions exhibit partial agglomeration, the mesoporous, defect-rich architecture significantly increases the availability of Mg²⁺ active sites and promotes faster interfacial charge transfer. The MgO-modified electrode exhibits a high peak anodic current density of 37.63 mA/cm² at 0.80 V (vs Ag/AgCl) in a 1.0 M KOH electrolyte containing 0.5 M hydrazine. This electrocatalytic performance is highly competitive when compared to reported Cu-NPs@f-MWCNTs composites. It is evidenced by a lower onset potential of +0.389 V and a Tafel slope of 76.90 mV/dec. Furthermore, it competes with numerous benchmarks established for transition metal oxide–based hydrazine-oxidation catalysts. Kinetic investigations reveal a diffusion-controlled mechanism characterized by a high catalytic turnover rate. By integrating an environmentally sustainable, cost-effective synthesis method with notable electrochemical performance, these chitosan-templated MgO nanorods offer a consistent and economical alternative to noble-metal catalysts. These findings substantiate their potential for application in high-efficiency direct hydrazine fuel cells (DHFCs) and sophisticated electrochemical sensors for environmental monitoring.</p></div>","PeriodicalId":653,"journal":{"name":"Journal of Nanoparticle Research","volume":"28 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148323907","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}