Nano-Structures & Nano-Objects最新文献_第10页

Eco-friendly conversion of corn husk agro-waste into microcrystalline cellulose and cellulose nanofibers 玉米壳农业废弃物环保转化为微晶纤维素和纤维素纳米纤维

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2026-02-01 Epub Date: 2026-01-03 DOI: 10.1016/j.nanoso.2025.101610

Nazym Sagiyeva , Kydyrmolla Akatan , Ainur Battalova , Gulfaridat Kampitova , Esbol Shaimardan , Ainur Kabdrakhmanova , Sana Kabdrakhmanova , Madiar Beisebekov

{"title":"Eco-friendly conversion of corn husk agro-waste into microcrystalline cellulose and cellulose nanofibers","authors":"Nazym Sagiyeva , Kydyrmolla Akatan , Ainur Battalova , Gulfaridat Kampitova , Esbol Shaimardan , Ainur Kabdrakhmanova , Sana Kabdrakhmanova , Madiar Beisebekov","doi":"10.1016/j.nanoso.2025.101610","DOIUrl":"10.1016/j.nanoso.2025.101610","url":null,"abstract":"<div><div>Efficient use of bioresources is essential in order to achieve sustainable development goals, and plays an important role in the reduction of any environmental impact and the improvement of resource efficiency. To this end, the present study investigates the process of obtaining microcrystalline cellulose (MCC) and cellulose nanofibers (CNFs) from corn husks (CHs), which are agricultural waste, under “mild” conditions by employing the organosolvent oxidation method using peroxyacetic acid (PAA). The results obtained at an effective hydromodule of CH:PAA 1:18 g/mL, were: MCC yield – 51.60 %, α-cellulose content – 58.73 ± 3 %, residual lignin – 12.92 ± 0.5 %, hemicellulose – 13.8 ± 0.5 %, ash content (SiO<sub>2</sub>) – 10.73 ± 0.5 %, and moisture content – 3.57 ± 0.5 %. Furthermore, the effective MCC:FA ratio that was used to obtain CNFs from MCC<sub>CH</sub> using formic acid (FA) was found to be 1/30 g/mL. The CNF yield achieved with this ratio was 68.67 %, and the average particle size was reduced by 177 times in length and 33 times in width, as compared to the initial MCC<sub>CH</sub> size. The ζ-potential of the resulting MCC was −19.3 mV and the crystallinity index was 80.9 %. The effectiveness of the PAA/FA approach arises from mild oxidation that selectively removes amorphous cellulose, while preserving crystalline regions, thereby maintaining high crystallinity and contributing to favorable material yields. The physicochemical properties of the resulting high-quality cellulose micro- and nanofibers were compared, and found to have been obtained at good efficiency. The MCC and CNFs obtained have excellent potential for use in the medical field as essential components, and in the development of bioplastics and biocomposites, among other applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"45 ","pages":"Article 101610"},"PeriodicalIF":5.45,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880554","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}

引用次数: 0

Recent advances in conducting polymer nanocomposites for non-invasive sweat-based biosensors: A review 无创汗液生物传感器用导电聚合物纳米复合材料的研究进展

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2026-02-01 Epub Date: 2026-01-03 DOI: 10.1016/j.nanoso.2025.101609

Lovepreet Singh , Harshita Jain , Sakshi Sharma , Nishel Saini , Anuradha Kashyap , Vishal Singh

{"title":"Recent advances in conducting polymer nanocomposites for non-invasive sweat-based biosensors: A review","authors":"Lovepreet Singh , Harshita Jain , Sakshi Sharma , Nishel Saini , Anuradha Kashyap , Vishal Singh","doi":"10.1016/j.nanoso.2025.101609","DOIUrl":"10.1016/j.nanoso.2025.101609","url":null,"abstract":"<div><div>The demand for non-invasive, continuous health monitoring has accelerated research on wearable biosensors for real-time sweat analysis. Conducting polymer nanocomposites (CPNs), particularly those derived from polyaniline (PANI), polypyrrole (PPy), and PEDOT:PSS, have gained prominence owing to their unique combination of electrical conductivity, redox activity, mechanical flexibility, and biocompatibility. Current review broadly survey wearable biosensors, this article specifically highlights the engineering strategies and structure–property relationships of CPNs for sweat-based applications. Recent advances in nanomaterial integrationincluding carbon nanotubes, graphene derivatives, MXenes, and metal nanoparticlesare critically examined for their role in enhancing electron transfer, stability, and analyte selectivity. Fabrication approaches such as electropolymerization, inkjet printing, electrospinning, and 3D printing are compared in terms of scalability, reproducibility, and device durability. Transduction mechanisms like electrochemical, chemiresistive, and colorimetricare discussed. Device-level considerations, including substrate flexibility, microfluidic sweat handling, and wireless data transmission, are also analyzed. Key challenges like dopant leaching, film cracking under mechanical deformation, and signal drift in humid environments are identified, along with strategies for improved stability and performance. By integrating polymer engineering insights with wearable electronics, this review provides a forward-looking framework for designing next-generation sweat biosensors based on conducting polymer nanocomposites.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"45 ","pages":"Article 101609"},"PeriodicalIF":5.45,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880630","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}

引用次数: 0

Dual Channel Detection of Tetracycline Using Room-Temperature Phosphorescent Carbon Dots 室温磷光碳点双通道检测四环素

Nano-Structures & Nano-Objects Pub Date : 2026-01-30 DOI: 10.1142/s1793292026500700

Haoda Zhang, Kai Huang, Sen Zhou, Xiaoming Yang

{"title":"Dual Channel Detection of Tetracycline Using Room-Temperature Phosphorescent Carbon Dots","authors":"Haoda Zhang, Kai Huang, Sen Zhou, Xiaoming Yang","doi":"10.1142/s1793292026500700","DOIUrl":"https://doi.org/10.1142/s1793292026500700","url":null,"abstract":"Excessively employing tetracycline (TC) or even abusing has led to severe environmental pollution and health risks, and monitoring its amount and related residue is of great importance. Although fluorescent carbon dots (CDs) have been employed to detect TC, single-fluorescence detection usually shows the deficiencies of the limited interference resistance and relatively narrow detection range. This study introduced a dual-channel method based on nitrogen-doped phosphorescent carbon dots (N-CDs). By capitalizing on the synergistic effects of fluorescence and phosphorescence signals, this approach effectively improved the detection sensitivity and the linear range. These N-CDs were synthesized through a one-step microwave-assisted method using guanidinopropionic acid and amidinothiourea as the precursors. The findings revealed that TC selectively quenched both the fluorescent and phosphorescent signals of N-CDs mainly based on the inner filter effect (IFE). These findings not only validated the theoretical basis of the dual-channel detection approach but also highlighted its practical potential. The developed method provided a sensitive and reliable technique for detecting TC in various samples and demonstrated the versatility of N-CDs as promising sensing materials.","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147381942","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}

引用次数: 0

Degradation of Tetracycline in Medical Wastewater by Fe ₂ O ₃ /CuO Photocatalyst Under Visible Light 可见光下fe2o3 /CuO光催化剂降解医疗废水中的四环素

Nano-Structures & Nano-Objects Pub Date : 2026-01-10 DOI: 10.1142/s1793292026500608

Siqi Wang, Yu Zhang, Lin Xu Feng, Ziying Tian, Guofei Huang, Jun Yu, Qiang Li

{"title":"Degradation of Tetracycline in Medical Wastewater by Fe <sub>2</sub> O <sub>3</sub> /CuO Photocatalyst Under Visible Light","authors":"Siqi Wang, Yu Zhang, Lin Xu Feng, Ziying Tian, Guofei Huang, Jun Yu, Qiang Li","doi":"10.1142/s1793292026500608","DOIUrl":"https://doi.org/10.1142/s1793292026500608","url":null,"abstract":"To explore the development of photocatalytic materials which were highly efficient, nonpolluting, have low production cost and are recyclable for degrading tetracycline (TC) in medical wastewater. In the study, Fe 2 O 3 was selected as the photocatalyst, and CuO was introduced to modify it to produce the Fe 2 O 3 /CuO photocatalyst. The Fe 2 O 3 /CuO composite photocatalysts were investigated by characterization means such as XRD, SEM, UV–Vis DRS and EPR. The enhanced photocatalytic activity of the Fe 2 O 3 /CuO was attributed to CuO doping, which modulates the band structure, creating a new bandgap that extends the absorption spectrum and improves the utilization of visible light. Additionally, Fe 2 O 3 serves as an electron donor, significantly accelerating the separation of photogenerated electron–hole pairs. The effects of doping ratio, dosage, initial concentration of TC and illumination time on the degradation of TC in medical wastewater by Fe 2 O 3 /CuO composite photocatalysts were investigated. Under the optimized conditions, the degradation rate of TC by the Fe 2 O 3 /CuO photocatalyst was 94.26%. The removal rate of the loaded Fe 2 O 3 /CuO-4 photocatalyst remained above 90% after five repetitions. The Fe 2 O 3 /CuO-4 photocatalyst was suitable for practical application in the treatment of antibiotics in medical wastewater due to its simple preparation and good photocatalytic ability, and reusability.","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883532","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}

引用次数: 0

ATP-Supported MnO ₂ Nanofibers for High-Performance Supercapacitors 用于高性能超级电容器的atp支持mno2纳米纤维

Nano-Structures & Nano-Objects Pub Date : 2025-12-24 DOI: 10.1142/s1793292026500530

Xiaofeng Yang, Dongdong Li, Longgui Peng, Jiushuang Huang

{"title":"ATP-Supported MnO <sub>2</sub> Nanofibers for High-Performance Supercapacitors","authors":"Xiaofeng Yang, Dongdong Li, Longgui Peng, Jiushuang Huang","doi":"10.1142/s1793292026500530","DOIUrl":"https://doi.org/10.1142/s1793292026500530","url":null,"abstract":"Manganese dioxide (MnO[Formula: see text], known for its high theoretical specific capacitance, is considered one of the most promising electrode materials for supercapacitors. However, its poor intrinsic conductivity and structural degradation during cycling severely limit its practical application. To address these challenges, an interwoven MnO 2 nanofiber network–based attapulgite (ATP)/MnO 2 composite was constructed by in-situ growth of MnO 2 nanofibers on natural ATP clay scaffolds via a one-step hydrothermal method. The microstructures and morphologies of pure ATP, pure MnO 2 and the ATP/MnO 2 composite were systematically characterized and compared. Furthermore, the electrochemical performances of pure MnO 2 and the ATP/MnO 2 composite were evaluated. Results indicate that the ATP/MnO 2 composite possesses a more favorable specific surface area and pore structure than pure ATP or MnO 2 , with an approximate 40% increase in specific surface area. Electrochemical measurements demonstrated that the ATP/MnO 2 composite delivered a specific capacitance of 218.8[Formula: see text]F[Formula: see text]g[Formula: see text] at a current density of 0.5[Formula: see text]A[Formula: see text]g[Formula: see text], approximately 50% higher than that of pure MnO 2 . Moreover, the composite exhibited outstanding cycling stability, retaining 89.9% of its initial capacitance after 5000 charge–discharge cycles at 3[Formula: see text]A[Formula: see text]g[Formula: see text]. This study demonstrates the role of natural ATP in synergistically optimizing the specific surface area and active sites of MnO 2 -based materials. The proposed strategy offers a feasible route for designing high-performance, low-cost and sustainable MnO 2 -based electrodes, while also providing new insights into the development of long-lasting energy storage materials.","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147905224","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}

引用次数: 0

Enhanced Photocatalytic Degradation of Methylene Blue Using La3+ and Mo6+ Co-Doped TiO ₂ Nanotubes La3+和Mo6+共掺杂tio2纳米管增强光催化降解亚甲基蓝

Nano-Structures & Nano-Objects Pub Date : 2025-12-20 DOI: 10.1142/s1793292026500517

Yujiang Gou, Jinghong Du, Zilong Wang, Sheng Yang He, Jiahao Lv

{"title":"Enhanced Photocatalytic Degradation of Methylene Blue Using La3+ and Mo6+ Co-Doped TiO <sub>2</sub> Nanotubes","authors":"Yujiang Gou, Jinghong Du, Zilong Wang, Sheng Yang He, Jiahao Lv","doi":"10.1142/s1793292026500517","DOIUrl":"https://doi.org/10.1142/s1793292026500517","url":null,"abstract":"La[Formula: see text] single-doped and La[Formula: see text]–Mo[Formula: see text] co-doped TiO 2 nanotubes were synthesized via anodic oxidation combined with a two-step electrochemical process. Their crystalline structure, microstructure and light absorption properties were characterized using XRD, SEM and UV-Vis spectroscopy, followed by methylene blue photocatalytic degradation experiments. The results indicate that both La[Formula: see text] single-doping and La[Formula: see text]–Mo[Formula: see text] co-doping can suppress the transformation of the anatase phase to the rutile phase and inhibit grain growth. The diameters of both types of nanotubes range between 60[Formula: see text]nm and 80[Formula: see text]nm, with La and Mo uniformly distributed throughout the nanotubes. Both La[Formula: see text] single-doped and La[Formula: see text]–Mo[Formula: see text] co-doped induced red shifts in the TiO 2 light absorption peaks. The most pronounced red shift in the light absorption band edges occurred at a La[Formula: see text]–Mo[Formula: see text] ratio of 3:7, reducing the bandgap width to its minimum value of 2.99 eV. Both La[Formula: see text] single-doped and La[Formula: see text]–Mo[Formula: see text] co-doped TiO 2 exhibited first-order photocatalytic degradation of methylene blue. As the La[Formula: see text] single-doped concentration increased or the La[Formula: see text]–Mo[Formula: see text] co-doped ratio varied from 1:9 to 9:1, both the methylene blue degradation rate and photocatalytic reaction rate initially increased before decreasing, while the half-life initially decreased before increasing. At a La[Formula: see text]–Mo[Formula: see text] co-doped ratio of 3:7, the photocatalytic activity of the TiO 2 nanotubes was optimal, achieving a maximum degradation rate of 89.73% within 8[Formula: see text]h — a 52% improvement over pure TiO 2 nanotubes.","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902665","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}

引用次数: 0

Tenofovir-loaded alginate-chitosan nanoparticles in thermosensitive vaginal gel: A novel strategy for HIV prophylaxis 热敏阴道凝胶中负载替诺福韦海藻酸壳聚糖纳米颗粒：一种预防HIV的新策略

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-12-01 Epub Date: 2025-10-28 DOI: 10.1016/j.nanoso.2025.101570

Sonali Mahaparale , Vasanti Patil , Mohd Sayeed Shaikh , Paresh R. Mahaparale

{"title":"Tenofovir-loaded alginate-chitosan nanoparticles in thermosensitive vaginal gel: A novel strategy for HIV prophylaxis","authors":"Sonali Mahaparale , Vasanti Patil , Mohd Sayeed Shaikh , Paresh R. Mahaparale","doi":"10.1016/j.nanoso.2025.101570","DOIUrl":"10.1016/j.nanoso.2025.101570","url":null,"abstract":"<div><div>The present study aims to develop a tenofovir-loaded alginate-chitosan nanoparticles (TFV-loaded AG-CS NPs) incorporated in a thermosensitive vaginal gel as a new HIV prevention strategy. Using the Box-Behnken design with five independent variables, optimized NPs were prepared using the ionic gelation technique. The optimized formulation (F14) with 0.3 % w/v sodium AG, 0.075 % w/v CS, and 0.075 % w/v CaCl<sub>2</sub>, stirred at 1750 RPM for 45 min, produced NPs with a particle size of 50.41 nm and 90.4 % drug entrapment efficiency. These nanoparticles were mixed into a thermosensitive Pluronic F127 (20 % w/v) gel system, which had optimal physicochemical properties such as pH (4.1), gelation temperature (37.5°C), and temperature-dependent viscosity (2930 centipoise at 36°C). The formulation showed controlled drug release over 24 h using the Korsmeyer-Peppas model (R² = 0.9927), suggesting diffusion-controlled drug release. This novel approach addresses key issues in vaginal drug delivery systems, such as mucus barriers and pH fluctuations, while also providing extended drug release for effective HIV prophylaxis. The TFV-loaded AG-CS NPs based thermosensitive gel holds promise as a user-friendly alternative to traditional prevention methods, with improved mucosal retention and drug bioavailability.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101570"},"PeriodicalIF":5.45,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145412927","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}

引用次数: 0

Diosgenin-based nanomedicine: Advances in formulation strategies, biomedical applications, and translational challenges 基于薯蓣皂苷元的纳米医学：配方策略、生物医学应用和转化挑战的进展

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-12-01 Epub Date: 2025-09-20 DOI: 10.1016/j.nanoso.2025.101556

Seyed Mohammad Amini

{"title":"Diosgenin-based nanomedicine: Advances in formulation strategies, biomedical applications, and translational challenges","authors":"Seyed Mohammad Amini","doi":"10.1016/j.nanoso.2025.101556","DOIUrl":"10.1016/j.nanoso.2025.101556","url":null,"abstract":"<div><div>Diosgenin, a natural phytochemical, is promising in treating various diseases, including cancer, diabetes, arthritis, asthma, and cardiovascular conditions. Notably, it serves as a crucial raw material in the production of several steroid medications within the pharmaceutical industry. Given the vast array of opportunities presented by nanotechnology in the field of biomedicine, substantial research efforts have focused on the development of diverse nanoformulations derived from natural compounds, including diosgenin. This review examines a range of studies regarding the application of diosgenin in preparing nanomaterials, as well as the utilization of nanomaterials for the production, application, or delivery of diosgenin itself. Key insights into the remarkable potential of diosgenin within medical nanotechnology are emphasized. Its hydrophobic nature allows for efficient loading by organic nanostructures, enhancing its bioavailability in the body. Beyond its therapeutic attributes, due to its high chemical activity, diosgenin can act as a precursor for synthesizing various precursors for preparing organic or inorganic nanoparticles.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101556"},"PeriodicalIF":5.45,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145107378","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}

引用次数: 0

Controlled synthesis and aerosol printing of size-tunable platinum nanoparticles for plasmonic applications 等离子体应用的可调谐铂纳米粒子的控制合成和气溶胶印刷

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-12-01 DOI: 10.1016/j.nanoso.2025.101591

Anna Lizunova, Arina Sanatulina, Artem Novoselov, Egor Khramov, Olesya Vershinina, Ekaterina Kameneva, Ekaterina Kolisova, Gleb Zirnik, Dana Malo, Victor Ivanov

{"title":"Controlled synthesis and aerosol printing of size-tunable platinum nanoparticles for plasmonic applications","authors":"Anna Lizunova, Arina Sanatulina, Artem Novoselov, Egor Khramov, Olesya Vershinina, Ekaterina Kameneva, Ekaterina Kolisova, Gleb Zirnik, Dana Malo, Victor Ivanov","doi":"10.1016/j.nanoso.2025.101591","DOIUrl":"10.1016/j.nanoso.2025.101591","url":null,"abstract":"<div><div>We present a gas-discharge method for controlled synthesis of platinum nanoparticles with tunable sizes ranging from 5 to 105 nm, achieved through precise gas flow regulation and subsequent in-flow sintering at 985 °C. The engineered polydisperse platinum (Pt) nanoparticles (NPs) exhibit size-dependent plasmonic absorption in the ultraviolet (UV) range from 247 to 267 nm. Leveraging dry aerosol direct-printing techniques, we fabricate metal-enhanced nanostructures that boost UV photoluminescence. Experimental results demonstrate the influence of Pt particle size, optical density, and nanostructure design on plasmon-enhanced UV emission from ZnO crystals. A theoretical framework is developed to model the luminescence enhancement of emitters coupled to polydisperse plasmonic Pt nanoparticles. Numerical calculations confirm the dependence of enhancement and quenching effects on both particle size and emitter quantum yield. Obtained experimental and simulation results provide insights for optimizing plasmonic UV light sources and design of metal-enhanced fluorescence (MEF) substrates.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101591"},"PeriodicalIF":5.45,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145690363","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}

引用次数: 0

Catalytic properties of Thuja occidentalis green synthesized Yb doped MgFe2O4, CuFe2O4 and MgCuFe2O4 ferrite nanoparticles 紫苏绿合成掺镱MgFe2O4、CuFe2O4和MgCuFe2O4铁氧体纳米颗粒的催化性能

IF 5.45

Nano-Structures & Nano-Objects Pub Date : 2025-12-01 Epub Date: 2025-09-26 DOI: 10.1016/j.nanoso.2025.101554

Nisha Devi , Kuldeep Kumar , Ashwani Kumar , Naveen Thakur

{"title":"Catalytic properties of Thuja occidentalis green synthesized Yb doped MgFe2O4, CuFe2O4 and MgCuFe2O4 ferrite nanoparticles","authors":"Nisha Devi , Kuldeep Kumar , Ashwani Kumar , Naveen Thakur","doi":"10.1016/j.nanoso.2025.101554","DOIUrl":"10.1016/j.nanoso.2025.101554","url":null,"abstract":"<div><div>The study explored the preparation of plant extract from <em>Thuja occidentalis</em> and the green synthesis of Ytterbium (Yb) doped ferrite nanoparticles, including MgFe<sub>2</sub>O<sub>4</sub>, CuFe<sub>2</sub>O<sub>4</sub> and MgCuFe<sub>2</sub>O<sub>4</sub>. The plant extract was prepared by boiling fresh <em>Thuja occidentalis</em> leaves in distilled water and subsequently filtering the solution. The extract, abundant in phytochemicals such as flavonoids, tannins, and terpenoids, served as both a reducing and stabilizing agent in the precipitation-based synthesis of Yb doped ferrite nanoparticles. The molar ratios of the metals were maintained to achieve desired doping levels and NaOH was added to induce precipitation, which was then calcined to produce ferrite nanoparticles. The photocatalytic and antioxidant activities of the synthesized nanoparticles were evaluated using methylene blue (MB) dye degradation under visible light and DPPH radical scavenging assays, respectively. Characterization techniques, including XRD, FTIR, UV-Vis spectroscopy, XPS, SEM-EDS, TEM and VSM spectroscopy, confirmed the successful synthesis, structural integrity, functional and magnetic properties of the nanoparticles. The results revealed that Yb doped CuFe<sub>2</sub>O<sub>4</sub> ferrites exhibited superior photocatalytic and antioxidant activities compared to the other ferrite nanoparticles, making them promising candidates for environmental and health-related applications.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"44 ","pages":"Article 101554"},"PeriodicalIF":5.45,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145156170","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}

引用次数: 0