Nano-Structures & Nano-Objects最新文献

{"title":"Performance of TiO2-SiC nanomaterials on morphology and sorption behavior of PVA-PEG-based nanocomposites for UV-applications and antibacterial efficacy","authors":"Nawras T. Sheehab ,&nbsp;Fouad Sh. Hashim ,&nbsp;Ehssan Al-Bermany ,&nbsp;Ahmed Najm Obaid ,&nbsp;Karar Abdali ,&nbsp;Adel H. Omran Alkhayatt","doi":"10.1016/j.nanoso.2025.101479","DOIUrl":"10.1016/j.nanoso.2025.101479","url":null,"abstract":"<div><div>This work exhibits the incorporation of TiO₂-SiC nanoparticles (NPs) for the first time via a green and cost-effective route. It examines their loading into a polymeric matrix (PM) composed of polyvinyl alcohol (PVA) and polyethylene glycol (PEG) at several weight percentages (wt%) via a casting way. The Fourier transform infrared spectroscopy (FTIR) revealed the chemical properties. Field emission scanning electron microscopy (FESEM) confirmed that the surface morphology of PM is rough and homogenous. Furthermore, the insertion of lower filler loadings of TiO₂-SiC NPs was uniformly and well dispersed through the PM, reducing aggregations. It is rough and homogenous. The compositional elements were achieved using EDXs. The optical absorbance values were boosted by 85 % at a wavelength of 260 nm, decreasing the indirect bandgaps by 47.5 %, from 4.58 eV to 2.40 eV (Tauc model) and from 4.83 eV to 2.60 eV (ASF model) upon SiC ratio reaching 2.5 wt%. The AC conductivity values were improved upon loading from 3.30 × 10⁻⁹ S.cm⁻¹ to 3.52 × 10⁻⁹ S.cm⁻¹ at 100 Hz, and the dielectric constant was higher than PM finding with maintained low dielectric loss. The strongest activity and the greatest inhibitory zone of about 24 mm <em>Staphylococcus aureus</em> (gram-positive) appeared at a ratio of 2.5 wt% SiC. From the results obtained, these films are promising for use in UV-blocking, energy storage, and optoelectronic applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101479"},"PeriodicalIF":5.45,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829063","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":"Photochemical and electrochemical synthesis of [rGO–AuNps] hybrids dispersions for detection of rhodamine 6G by SERS","authors":"Juan Martín Chierici ,&nbsp;Federico Fioravanti ,&nbsp;Luis A. Pérez ,&nbsp;Gabriela I. Lacconi","doi":"10.1016/j.nanoso.2025.101478","DOIUrl":"10.1016/j.nanoso.2025.101478","url":null,"abstract":"<div><div>Many hybrid nanomaterials with different types of metallic nanostructures have been studied for diverse applications. Herein, we present four simple experimental strategies, combining photochemical and electrochemical reduction steps to obtain aqueous dispersions of hybrid nanomaterials of reduced graphene oxide flakes (rGO) supporting gold nanoparticles (AuNps). We found clear differences in the optical, structural, and morphological characteristics of the <strong>[rGO–AuNps]</strong> hybrids due to the size, shape, and distribution of AuNps, according to the synthesis strategy employed. These characteristics are associated with the degree of reduction (C/O ratio composition) and structural defects (Raman intensity ratio between D and G bands) of the rGO formed, both features provide sites available for nucleation and growth of the nanostructures, obtained in each synthesis. The efficiency of different dispersions with plasmonic activity in the detection of rhodamine 6 G (Rh6G) from dilute aqueous solutions was spectroscopically evaluated. SERS (Surface-Enhanced Raman spectroscopy) experiments were performed directly on cellulose fibers (filter paper), previously modified with the assembly of the hybrid nanomaterials, and the Rh6G molecules. In this way, a practical and simple configuration with nanomaterials has been established, as a platform designed for the sensitive detection of adsorbed molecules, potentially useful during the filtration of contaminated water. The SERS spectra of adsorbed Rh6G on the paper membranes with the hybrids <strong>[rGO]</strong>^{<strong>hυ</strong>} <strong>–[AuNps]</strong>^{<strong>hυ</strong>} and <strong>[rGO]</strong>^{<strong>hυ</strong>}<strong>–[AuNps]</strong>^{<strong>ec</strong>} for 48 h immersion, showed a 23 ± 5 and 21 ± 5 enhancement factor (EF), respectively.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101478"},"PeriodicalIF":5.45,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143820820","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 fabrication of novel LaCeO₃ decorated with CuO using Kigelia africana (lamb) benth leaf extract for photocatalytic degradation of malachite green","authors":"Rahma Demy Fitria Irbati ,&nbsp;Dewangga Oky Bagus Apriandanu ,&nbsp;Mike Rahayu ,&nbsp;Vatra Reksa Ananda ,&nbsp;Muh. Risky Yusuf ,&nbsp;Sheela Chandren ,&nbsp;Yoki Yulizar","doi":"10.1016/j.nanoso.2025.101474","DOIUrl":"10.1016/j.nanoso.2025.101474","url":null,"abstract":"<div><div>This study successfully synthesized a novel LaCeO₃/CuO nanocomposite using a green synthesis method mediated by <em>Kigelia africana</em> leaf extract (KALE). LaCeO₃ is a perovskite with a significantly high band gap value between 3 and 3.19 eV. The combination with CuO, a cost-effective material that has a lower band gap of 1.2–2 eV, aims to reduce the overall band gap. This material modification will result in a heterojunction structure that boosts its photocatalytic performance. Characterization techniques such as FT-IR, UV-Vis DRS, XRD, HR-TEM, FESEM-EDX, and XPS validated the effective creation of the nanocomposite, which exhibited a unique morphology and a type S heterojunction structure. The LaCeO₃/CuO nanocomposite exhibited a bandgap energy of 2.88 eV, placing it within the visible light spectrum. Experiments assessing its photocatalytic performance demonstrated that the LaCeO₃/CuO nanocomposite effectively decomposed malachite green (MG) under visible light, achieving a maximum degradation efficiency of 92.88 % within 120 minutes. Kinetic investigations indicated that the reaction follows pseudo-first-order kinetics, exhibiting a rate constant of 6.19 × 10⁻² min⁻¹ . The ideal mass of the photocatalyst for the degradation of MG was found to be 30 mg. The study also investigated the influence of various factors, such as pH, the presence of anions, and the role of reactive oxygen species (ROS), affected photocatalytic activity. Results indicated that the LaCeO₃/CuO nanocomposite exhibited optimal performance in neutral to mildly alkaline conditions. The presence of anions, particularly Cl⁻ and SO₄²⁻, negatively impacted photocatalytic activity. Furthermore, the LaCeO₃/CuO nanocomposite demonstrated excellent reusability, maintaining high degradation efficiency over three consecutive cycles. These results emphasize the possible of the green-synthesized LaCeO₃/CuO nanocomposite as a promising and sustainable photocatalyst for the effective removal of organic pollutants from wastewater.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101474"},"PeriodicalIF":5.45,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790892","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":"Reaction between Fe³⁺ and aniline in the synthesis of PANI-γFe₂O₃ and PANI-Fe₃O₄ nanocomposites: Mechanistic studies and evaluation of parameters","authors":"A.F.N. Martins ,&nbsp;F.B. Diniz ,&nbsp;A.R. Rodrigues","doi":"10.1016/j.nanoso.2025.101477","DOIUrl":"10.1016/j.nanoso.2025.101477","url":null,"abstract":"<div><div>This work presents the results of experiments with PANI-γFe₂O₃ nanocomposites, synthesized in an acidic medium at 40°C under UV irradiation (λ = 365 nm), using maghemite (γFe₂O₃) and magnetite (Fe₃O₄). X-ray diffraction revealed the evolution of the transformations of the iron oxides throughout the synthesis. At the same time, oxidation/reduction reactions of iron interacting with aniline were observed in an electrochemical cell. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed changes in particle morphology during aniline polymerization, including growth and a tendency to agglomeration after 120 minutes of reaction. Energy dispersive spectroscopy (EDS) confirmed variations in the elemental composition, reflecting the partial conversion between maghemite and magnetite and demonstrating the influence of polymerization on the final composition of the material. The results reinforce the proposed model, according to which synthesis occurs in an oscillatory manner: Fe³ ⁺ ions from maghemite are reduced to Fe²⁺ from magnetite (Fe₃O₄), which oxidizes polyaniline in the polymerization process. Subsequently, part of the Fe²⁺ ions is re-oxidized under UV irradiation, reconverting magnetite into maghemite. This study clarifies the redox mechanism responsible for the phase transformations, making it possible to optimize the structural control of these materials for applications in energy storage devices, electrochemical sensors and environmental remediation systems. The results lay a solid foundation for expanding the use of functional nanomaterials in various technological and environmental areas.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101477"},"PeriodicalIF":5.45,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785206","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":"Recent development in wearable sensors for healthcare applications","authors":"Fatemeh Saeedi,&nbsp;Reza Ansari,&nbsp;Mojtaba Haghgoo","doi":"10.1016/j.nanoso.2025.101473","DOIUrl":"10.1016/j.nanoso.2025.101473","url":null,"abstract":"<div><div>Wearable sensors aid in diagnosing various diseases by using chemical, physical, and biological sensing technologies. They also make it possible to continuously and instantly monitor a patient's physiological state. Recently, the demand for sensors that track people's surroundings, fitness and health has increased. In the meantime, the production of flexible and wearable polymer sensors based on biocompatibility, biodegradability, environmentally friendly features and cost-effectiveness has created a significant evolution in the wearable sensor industry. In this review, the most recent researches conducted in the direction of the construction of wearable sensors in different fields including physical, optical, chemical, biochemical and the working mechanism of these sensors have been reviewed. Assisting researchers in selecting the most appropriate selective and sensitive sensor is a key objective of this review. In addition, the applications of these sensors were classified into different categories and discussed in fields such as health care and remote welfare. In general, improving personal health care and monitoring their performance using wearable electrochemical and biosensor technologies have a significant impact on people's daily lives.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101473"},"PeriodicalIF":5.45,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739974","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":"Complete carbohydrate-based synthetic strategy for an efficient plasmonic metal and alloy nanostructured SERS substrate","authors":"Sumitha Chandran ,&nbsp;Bijal K. Bahuleyan ,&nbsp;Shibin Thomas","doi":"10.1016/j.nanoso.2025.101476","DOIUrl":"10.1016/j.nanoso.2025.101476","url":null,"abstract":"<div><div>Surface enhanced Raman spectroscopy (SERS) has grown to be one of the most effective spectroscopic methods with a wide range of applications since the discovery of enhanced spectrum of pyridine on a silver electrode. However, the challenges in fabricating an affordable, simple, and long-lasting substrate restricts its application in devices. In this study, we report for the first time on a novel, inexpensive polymer-based SERS substrate made by thermally evaporating colloidal solutions of metal and alloy nanoparticles over humid sheets of cellulose acetate (CA). Green synthetic strategies were adopted for preparing nanoparticles using glucose as the reducing agent and starch as the capping agent. Au, Ag and their alloys decorated CA sheets were prepared, and the nanoparticle formation is confirmed by UV-Visible absorption spectroscopy. Diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDAX), atomic force microscopy (AFM) and Fourier transform infra-red (FT-IR) spectroscopy were used for the characterization of the nanoparticle decorated CA sheets. 1,4-benzenedithiol (1,4-BDT) is used as the Raman active molecule for SERS studies. A noticeably greater Raman enhancement was observed using these sheets, demonstrating the potential of these substrates for use in SERS-based devices.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101476"},"PeriodicalIF":5.45,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143739933","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":"Precision engineering of vinblastine-loaded zinc oxide nanoparticles through statistical experimental design","authors":"Zenli Cheng ,&nbsp;Ashok Kumar Janakiraman ,&nbsp;Ramkanth Sundarapandian ,&nbsp;Sinouvassane Djearamane ,&nbsp;Hanish Singh Jayasingh Chellammal ,&nbsp;Haja Nazeer Ahamed ,&nbsp;Saminathan Kayarohanam","doi":"10.1016/j.nanoso.2025.101472","DOIUrl":"10.1016/j.nanoso.2025.101472","url":null,"abstract":"<div><div>The application of multifunctional zinc oxide nanoparticles (ZnONPs) for the delivery of vinblastine (VB) represents a novel approach in nanomedicine. However, the synthesis of this combination, its characteristics and potential in biomedical applications have yet to be explored. Given its promising therapeutic prospects, a holistic experimental approach is essential to achieve a robust formulation of VB-ZnONPs with therapeutic values. Hence, this study aimed to employ statistical experimental design to optimize the synthesis of vinblastine (VB)-loaded ZnONPs and assess their potential in targeted drug delivery and antimicrobial applications. The effect of the critical process parameters such as stirring temperature, stirring speed and drying temperature on the mean particle size, zeta potential (ZP), and entrapment efficiency (EE) were evaluated and the optimal synthesis conditions were determined with Box-Behnken Design (BBD). Under the optimal synthesis conditions, VB-ZnONPs achieved mean particle size, ZP and EE of 159 ± 0.78 nm, −16.5 ± 0.61 mV and 92.8 ± 0.02 %, respectively, consistent with the predicted values from the software. UV–visible spectroscopy revealed an absorbance peak at 270 nm for VB and 344 nm for ZnONPs, confirming the formation of VB-ZnONPs. Further, the synthesis of VB-ZnONPs was affirmed through the detection of VB and ZnO functional groups in the Fourier transform infrared spectroscopy. Transmission electron microscopy confirmed irregular and quasi-spherical shaped particles, while energy-dispersive X-ray spectroscopy (EDX) displayed the elemental distribution of zinc, oxygen and carbon. The stability of VB-ZnONPs was verified through thermogravimetric analysis. X-ray diffraction pattern revealed that VB-ZnONPs possessed a crystallite size of 22.9 nm and a hexagonal wurtzite structure. VB-ZnONPs demonstrated pH-sensitive release of VB, indicating potential for targeted delivery to tumor microenvironment. Moreover, they prevented the growth of Gram-positive bacteria (<em>Staphylococcus aureus, Staphylococcus epidermidis and Bacillus subtilis)</em> in a dose-dependent manner. These research findings underscore the significance of employing a statistical approach in optimizing the formulation of VB-ZnONPs and the potential of VB-ZnONPs in biomedical applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101472"},"PeriodicalIF":5.45,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715798","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":"Nano-engineered magnesium-enriched sugarcane bagasse for dual decontamination of heavy metals and E. coli in sewage water","authors":"Rehab F. Mohamed ,&nbsp;Ahmed A. Afifi ,&nbsp;Mohamed Azab El-Liethy ,&nbsp;Hossam F. Nassar","doi":"10.1016/j.nanoso.2025.101475","DOIUrl":"10.1016/j.nanoso.2025.101475","url":null,"abstract":"<div><div>Sugarcane bagasse (SCB) is a fibrous lignocellulosic waste formed when sugarcane is crushed to extract juice for ethanol and sugar manufacture. The study's goal was to look at how chemical alteration affects the properties of SCB combined with Mg and how successful it is at removing three heavy metals including (Copper (Cu^2 +), Zinc (Zn²⁺), and Lead (Pb²⁺)) as well as <em>Escherichia coli</em> (<em>E. coli</em>) from contaminated wastewater. The chemical and physical characteristics of the biochar generated were investigated at temperatures of 600°C and 800°C using the Brunauer-Emmett-Teller (BET) surface area analyzer, thermo gravimetric analysis (TGA), Fourier transform infrared (FTIR) peak analysis, and energy dispersive X-ray (EDS). A batch sorption test was carried out to determine the ability of sugarcane bagasse biochar (SCBB) to adsorb Cu, Pb, and Zn from solution. The adsorption data were examined using the Langmuir and Freundlich adsorption isotherms. The results indicate that the Langmuir isotherm model produced the best precise match. An accurate estimate for employing SCBB as a biosorbent material was used in sewage and industrial wastewater (contact time one hour, optimal dosage 800 ppm). The SCBB achieves maximum removal rates of 81.4, 83.5, and 89.2 % for biological oxygen demand (BOD), chemical oxygen demand (COD), and total suspended solids (TSS), respectively. However, nitrate nitrogen (NO₃-N) reached 52.2 %, while total phosphorus (TP) reached 63.2 %. Pb, Zn, and Cu were completely removed. The minimum inhibitory concentration (MIC) of SCBB against <em>E. coli</em> was 600 mg/mL. <em>E. coli</em> is completely eradicated from wastewater using 800 mg/L of SCBB in one hour. The present study developed potent, cost-effective, ecofriendly and multifunctional adsorbent of MgO-modified SCBB for safely wastewater de-pollution as a promising environmental remediation technology.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101475"},"PeriodicalIF":5.45,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715799","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":"Laser-assisted synthesis of metakaolin/Pd nanocomposite and its application as catalyst in wastewater remediation","authors":"Babak Jaleh ,&nbsp;Ahmadreza Sahraei ,&nbsp;Mahtab Eslamipanah ,&nbsp;Fatemeh Seifikar ,&nbsp;Saeid Azizian ,&nbsp;Sara Jalali ,&nbsp;Stefan Enghardt ,&nbsp;Benjamin Kruppke ,&nbsp;Hossein Ali Khonakdar ,&nbsp;Manoj B. Gawande","doi":"10.1016/j.nanoso.2025.101471","DOIUrl":"10.1016/j.nanoso.2025.101471","url":null,"abstract":"<div><div>Developing industrial activity and changing climate worldwide increase water contaminants and reduce safe water resources. Therefore, wastewater treatment and the removal or reduction of water contaminants have become important challenges. Affordable nanocatalysts for wastewater treatment are an effective solution to overcome this problem. Fabrication of a new type of metakaolin/Pd nanocomposite (MK/Pd) facilitates the reduction of noxious methyl orange and Cr(VI). This nanocomposite was manufactured based on the deposition of Pd NPs on the MK. In this study, the MK was first synthesized through a one-step heat treatment process at -750 °C for 4 h. Meanwhile, the laser ablation of Pd target in deionized water was also applied as a fast and chemical-free technique to prepare colloidal Pd nanoparticles (NPs). The samples were analyzed using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and BET analysis. The structural investigations indicated that MK surfaces with rough platy morphology were decorated with Pd NPs with an average crystallite size of 42 nm. The catalytic performance of the MK/Pd was also investigated for the reduction of methyl orange (MO) and Cr(VI) in an aqueous medium employing sodium borohydride or formic acid. The progress of reactions was monitored using UV–Vis spectroscopy, suggesting that the as-fabricated nanocomposite delivers very rapid reduction of both Cr(VI) (45 s) and MO (400 s). Compared to MO, Cr(VI) reduced ten times faster.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101471"},"PeriodicalIF":5.45,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143679919","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":"Recent advancements in nanostructured flame-retardants: Types, mechanisms, and applications in polymer composites","authors":"Manoj Kumar Singh ,&nbsp;Sanjay Mavinkere Rangappa ,&nbsp;Manjusri Misra ,&nbsp;Amar K. Mohanty ,&nbsp;Suchart Siengchin","doi":"10.1016/j.nanoso.2025.101468","DOIUrl":"10.1016/j.nanoso.2025.101468","url":null,"abstract":"<div><div>Nanostructured flame-retardants offer an innovative approach to improve the fire safety of materials while addressing performance, environmental, and health challenges associated with traditional flame-retardants (FRs). By utilizing nanoscale FRs such as CNTs, nanoclays, nanoparticles, graphene, and metal-organic frameworks, unique flame retardancy mechanism can be obtained. Nanostructured flame-retardants enhance the fire resistance of polymer and polymer composites through heat dissipation, barrier effects, and char promotion, significantly reducing heat and gas transfer. Furthermore, the high specific surface area of nanostructured flame-retardants ensures effective dispersion within the polymer matrix without compromising thermal or mechanical properties. These materials also provide multi-functional properties such as electrical conductivity and thermal conductivity along with flame retardancy. Due to its multi-functional properties, these materials have various applications in different industries such as construction, electronics, automotive, and aerospace. However, challenges such as compatibility with polymers, potential environmental impacts and scalability are the critical areas, which need more focus in ongoing research. This review is mainly focused on nanostructured flame-retardants and their types, mechanisms and applications of flame-retardant polymer composites, emphasizing recent advancements. It also highlights their role in improving material sustainability and discusses challenges and future directions. Nanostructured flame-retardants offer a promising path toward safer, more efficient, and sustainable fire-resistant materials, meeting the increasing demand for multifunctional and ecofriendly solutions across key industries.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"42 ","pages":"Article 101468"},"PeriodicalIF":5.45,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143654742","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}