Nanotechnology Reviews最新文献

{"title":"High mechanical performance of 3-aminopropyl triethoxy silane/epoxy cured in a sandwich construction of 3D carbon felts foam and woven basalt fibers","authors":"Nabil kadhim Taieh, Salman Khayoon Khudhur, Eman Abd Alhadi Fahad, Zuowan Zhou, D. Hui","doi":"10.1515/ntrev-2022-0519","DOIUrl":"https://doi.org/10.1515/ntrev-2022-0519","url":null,"abstract":"Abstract Epoxy-based sandwich composites with improved economic efficiency were developed to better utilize composite components with functions such as high mechanical performance and light weight, which influenced quality for load-bearing applications. Herein, an epoxy-based sandwich composite was made by laminating woven basalt fibers (WBFs) as a face sheet on 3D carbon felt foam (3D CFs) as a core material. The cast-in-place process was used to infuse the epoxy solution within the sandwich, resulting in bicontinuous composites with outstanding mechanical characteristics and high performance. In addition, the epoxy solution was combined with a silane coupling agent to boost the composite’s toughness by enhancing the adhesion between the fibers and the epoxy. The mechanical properties of epoxy composites were also found to be much improved when WBFs were used as a face on 3D CF foam. Compared to the epoxy/3DCFs/WBFs composite sandwich to pure epoxy, the flexural and tensile strengths improved by 298.1 and 353.8%, respectively, while the impact strength rose to 135 kJ/m2. This research shows a new way to make a new process for making sandwich composites with epoxy that is cheap and strong.","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43060690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Current status of synthesis and consolidation strategies for thermo-resistant nanoalloys and their general applications","authors":"Vivek Dhand, Yong-Jung Jeon, Jaehyeok Doh, Gyeong-Seop Han, Sanghoon Kim, K. Rhee","doi":"10.1515/ntrev-2022-0567","DOIUrl":"https://doi.org/10.1515/ntrev-2022-0567","url":null,"abstract":"Abstract Thermo-resistant nanoalloys are a new class of materials that combine high-temperature refractory compounds (such as carbides, nitrides, borides, and oxides) with nanoscale particles of metals, ceramics, or carbon. These composites exhibit remarkable thermal stability and anti-ablation/oxidation properties, making them highly attractive for various high-temperature applications in aerospace, energy, and high-temperature manufacturing. Despite their potential, the fabrication of these materials is challenging due to their complex synthesis and processing. Many researchers have summarized the challenges and suggested solutions to produce high-density, superior physicochemical properties of nano refractory materials for specific applications. Thus, in view of these perspectives, the present review provides an overview of the production criteria, processing, and synthetic routes for producing high-temperature nano refractory material composites with exceptional thermal and anti-ablation/oxidation properties. The review also highlights the challenges encountered by researchers and their solutions for fabricating these materials. Potential applications of high temperature refractory materials are found in various industries, such as refractory ceramics, high-temperature components in wear resistant, neutron shielding, and high power-density microelectronics manufacturing to name a few.","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42224532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure and electrical contact behavior of the nano-yttria-modified Cu-Al2O3/30Mo/3SiC composite","authors":"Hanjing Zhu, B. Tian, Yi Zhang, Meng Zhou, Yunzhang Li, Xianhua Zheng, Shengli Liang, Shuang Liu, Wenyu Sun, Yong Liu, A. Volinsky","doi":"10.1515/ntrev-2022-0532","DOIUrl":"https://doi.org/10.1515/ntrev-2022-0532","url":null,"abstract":"Abstract With the rapid development of the copper-based composite in the field of electrical contact material industry, the problem of poor arc erosion resistance of the copper-based material becomes more and more prominent. Improving the arc erosion resistance of the copper-based composite is an urgent problem to be solved. Cu-Al2O3/30Mo/3SiC and 0.5Y2O3/Cu-Al2O3/30Mo/3SiC electrical contact composites were prepared in a fast-hot-pressing sintering furnace. The microstructure and phase structure of the composites were analyzed by using a scanning electron microscope, transmission electron microscope, and X-ray diffraction meter, respectively. The arc erosion properties of the composites at 25 V, DC and 10-30 A were investigated by using a JF04C electric contact tester. The mass loss of the composites was reduced by 77.8%, and the arc erosion rate was reduced by 79.6% after the addition of nano-yttrium oxide under the experimental conditions of 25 V, DC and 30 A. At the same time, the arc energy and welding force of the composite after switching operations decreased, indicating that the addition of nano-yttria improved the arc erosion resistance of the composite. This work provides a new method for improving the arc erosion resistance of the copper-based composite contact material.","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42423484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoparticles for the potential treatment of Alzheimer’s disease: A physiopathological approach","authors":"Nicolás Navarro Martínez, Jorge Toledo Hernández, J. Morales","doi":"10.1515/ntrev-2022-0548","DOIUrl":"https://doi.org/10.1515/ntrev-2022-0548","url":null,"abstract":"Abstract Alzheimer’s disease (AD) is a multifactorial neurodegenerative central system disease with a high prevalence among the elderly and is the most common form of dementia. Oxidative stress is crucial on AD pathogenesis and leads to deposition of neurofibrillary tangles and Aβ plaques; therefore, the use of natural antioxidants or ROS scavengers could help avoid the formation of these aggregates. Similarly, Aβ-degrading/anti-aggregating molecules could help arrest AD progression. Otherwise, traditional anti-Alzheimer drugs such as acetylcholinesterase inhibitors help improve memory and attention deficits. Nevertheless, all these drugs are extensively metabolized, have low plasma concentration, and cannot cross the blood–brain barrier freely. This review discusses different strategies for nanocarrier conjugation of these drugs for brain targeting and delivery, and new approaches on AD treatment according to the most accepted hypotheses of AD pathogenesis. Although none of the existent compounds or drugs can completely arrest the disease’s progression, nanocarrier development of anti-Alzheimer drugs could help delaying the initial or late stages of neurodegeneration. The discovery of new and more complex nanosystems with multiple approaches in AD treatment is needed and will be the next step in AD treatment in the near future.","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45288570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioinspired ferromagnetic CoFe2O4 nanoparticles: Potential pharmaceutical and medical applications","authors":"M. Ansari, R. Govindasamy, M. Y. Begum, Mohammed Ghazwani, A. Alqahtani, M. Alomary, Yahya F. Jamous, S. Alyahya, S. Asiri, F. Khan, M. Almessiere, A. Baykal","doi":"10.1515/ntrev-2023-0575","DOIUrl":"https://doi.org/10.1515/ntrev-2023-0575","url":null,"abstract":"Abstract The primary goal of this work was to develop a cost-effective, non-toxic, eco-friendly, and simple approach for the green synthesis of CoFe2O4 nanoparticles (NPs) using Aloe vera leaf extract by the sol–gel auto-combustion method. In order to figure out their structural, morphological, and magnetic properties, the synthesized NPs were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), transmission electron microscope (TEM), dynamic light scattering (DLS), zeta potential, and vibrating-sample magnetometer (VSM). XRD analysis showed that particles had a single-phase spinel crystalline structure with an average crystalline size of 33.5 nm. Under VSM studies, the produced NPs exhibit a soft ferromagnetic property. SEM revealed that the as-prepared NPs were agglomerated due to their magnetic behavior. To the best of our knowledge, the anticandidal, antibiofilm, antibacterial, and anticancer activities of CoFe2O4 NPs toward drug-resistant gram-positive and gram-negative bacteria, as well as fungal strains, have been comprehensively investigated for the first time. The synthesized NPs had a minimal inhibitory concentration of 0.25–0.75 mg/ml against the tested pathogens. CoFe2O4 NPs inhibited the biofilm formation by 37.3–61.8% in selected strains at concentrations of 0.125–0.5 mg/ml. It was observed that the NPs not only suppress biofilm formation but also eradicate established mature biofilms by 50.9–64.49% that was further supported by SEM. SEM analysis shows that NPs significantly inhibit the colonization and aggregation of tested biofilm strains. Light microscopic analysis revealed that NPs completely inhibit the development of hyphae and filaments in Candida albicans, which significantly attenuates their pathogenicity. 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays and 4′,6-diamidino-2-phenylindole (DAPI) staining demonstrate that NPs significantly inhibit the proliferation of HCT-116 and HeLa cells. Furthermore, the SEM images of treated cells showed wrinkled and damaged cell walls, indicating the disruption and disorganization of the membrane. This study showed that the synthesized NPs were effective in inhibiting the growth of drug-resistant bacteria, candida, and their preformed biofilms as well. Thus, these NPs with broad-spectrum applications could be exploited in medical settings to diminish biofilm-based infections caused by these pathogenic strains.","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47449500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent progress on corrosion mechanisms of graphene-reinforced metal matrix composites","authors":"Tao Liu, Weimin Lyu, Zhicheng Li, Shen Wang, Xing Wang, Jiaxin Jiang, Xiao-song Jiang","doi":"10.1515/ntrev-2022-0566","DOIUrl":"https://doi.org/10.1515/ntrev-2022-0566","url":null,"abstract":"Abstract For components serving in high temperature, humidity, and salinity marine corrosive environment, it is vital to analyze the causes of corrosion behavior and corrosion mechanisms. Metal matrix composites (MMCs) are commonly used materials for offshore equipment. In this work, the corrosion factors of MMCs in marine environments are analyzed from the characteristics of high temperature, humidity, and salinity service environment, and the corrosion mechanisms are summarized. Graphene (Gr) has excellent comprehensive properties and great potential for applications in metal protection materials. In recent years, research into Gr anti-corrosive applications encompasses two aspects: pure Gr coatings and Gr composite coatings. Gr applied in MMCs is yet to be extensively studied. Therefore, this study analyzes the corrosion resistance of Gr–metal composites and discusses the corrosion resistance mechanisms of Gr-reinforced MMCs, which provides a reference for the design of Gr-reinforced metal composites and the optimization of corrosion resistance performance. Finally, future development directions for Gr–metal composites are proposed, and the critical factors such as defects, dispersion, content, size, arrangement, interface, and conductivity of Gr in the composites affecting their anti-corrosion properties are discussed. Graphical abstract","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45012891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic nanoparticles in 3D-printed scaffolds for biomedical applications","authors":"Nina Marovič, I. Ban, U. Maver, T. Maver","doi":"10.1515/ntrev-2022-0570","DOIUrl":"https://doi.org/10.1515/ntrev-2022-0570","url":null,"abstract":"Abstract Magnetic nanoparticles (MNPs) have recently attracted considerable attention, mainly due to their unique magnetic properties and biocompatibility. Although MNPs have been extensively studied for biomedical applications, there are still very few studies on them as part of three-dimensional (3D)-printed scaffolds. Thus, this review aims to show the potential of MNPs to modulate various properties of 3D-printed scaffolds. 3D Printing is for itself a contemporary method in biomedicine, owing to its ability to produce versatile scaffolds with complex shapes enabling a homogeneous distribution of cells or other entrapped compounds, as well as possible precise control of pore size and shape, porosity, and interconnectivity of pores that contribute to structural stability. All mentioned properties can be upgraded or complemented with the specific properties of MNPs (e.g., biocompatibility and positive effect on cell proliferation). Considering the latest related literature and a steadily increasing number of related publications, the fabrication of magnetically responsive scaffolds is among the most interesting strategies in tissue engineering. According to the literature, incorporating MNPs into scaffolds can improve their mechanical properties and significantly affect biological properties, such as cellular responses. Moreover, under the influence of an external magnetic field, MNPs significantly promoted cell adhesion, proliferation, and differentiation.","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48964373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Functionalized SWCNTs@Ag–TiO₂ nanocomposites induce ROS-mediated apoptosis and autophagy in liver cancer cells","authors":"Majid S. Jabir, Mustafa K. A. Mohammed, Salim Albukhaty, Duha S. Ahmed, Asad Syed, Abdallah M. Elgorban, Rajalakshmanan Eswaramoorthy, Hayder M. Al-kuraishy, Ali I. Al-Gareeb, Suresh Ghotekar, Sabrean F. Jawad, Mazin A. A. Najm","doi":"10.1515/ntrev-2023-0127","DOIUrl":"https://doi.org/10.1515/ntrev-2023-0127","url":null,"abstract":"Abstract Hybrid nanomaterials with unique physiochemical properties have received a lot of attention, making them attractive for application in different fields like cancer treatment. This study was designed to investigate the combined effects of single-walled carbon nanotubes (SWCNTs) hybridized with silver titanium dioxide composite (SWCNTs@Ag–TiO 2 ). Transmission electron microscopy and field emission scanning electron microscopy images demonstrated the accumulation of SWCNTs with Ag–TiO 2 due to an increased main grain size with functionalization to 40 nm. The D and G bands in SWCNTs @Ag–TiO 2 shifted to 1,366 and 1,534 cm −1 , respectively. SWCNTs@Ag-TiO 2 were assessed for their cytotoxicity and autophagy induction in liver cancer cells (Hep-G2) using the lactate dehydrogenase assay, MTT assay, and flow cytometry methods. The results showed that SWCNTs and SWCNTs@Ag–TiO 2 exhibited strong anti-cancer activity in vitro against Hep-G2 cells by inducing apoptosis and autophagy in liver cancer cells via controlling the AKT and JNK mitogen-activated protein kinase pathways. The results show that SWCNTs and SWCNTs coated with silver/titanium dioxide (SWCNTs@Ag–TiO 2 ) reduce the cells’ viability and proliferation. It was shown that an excessive amount of reactive oxygen species was a crucial mediator of both the cell death caused by SWCNTs and the cell death caused by SWCNTs combined with Ag–TiO 2 . Based on these findings, it appears that SWCNTs and SWCNTs@Ag–TiO 2 have the potential to be developed as nanotherapeutics for the treatment of liver cancer cells.","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135214622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Re-examination of nonlinear vibration and nonlinear bending of porous sandwich cylindrical panels reinforced by graphene platelets","authors":"Hui‐Shen Shen, Chong Li","doi":"10.1515/ntrev-2022-0544","DOIUrl":"https://doi.org/10.1515/ntrev-2022-0544","url":null,"abstract":"Abstract This article re-examines the nonlinear vibration and nonlinear bending responses of porous sandwich cylindrical panels reinforced by graphene platelets resting on elastic foundations in thermal environments. The graphene platelet-reinforced composite (GPLRC) core is assumed to be of multilayers, and each layer may have different porosity coefficient values to achieve a piece-wise functionally graded pattern. By introducing an inhomogeneous model instead of the equivalent isotropic model (EIM), the Young’s moduli along with the shear modulus of the porous GPLRC core are predicted through a generic Halpin–Tsai model in which the porosity is included. The thermomechanical properties of metal face sheets and the porous GPLRC core are assumed to be temperature-dependent. Governing equations of motion for sandwich cylindrical panels with porous GPLRC core are formulated based on Reddy’s third-order shear deformation theory coupled with von Kármán nonlinear strain–displacement relationships. In the modeling, the panel–foundation interaction and the thermal effects are also considered. The analytical solutions for the nonlinear vibration and nonlinear bending problems are obtained by applying a two-step perturbation approach. Numerical studies are performed to compare the results obtained from the present model and the EIM. The results confirm that the EIM is not suitable for linear free vibration analysis of sandwich cylindrical panels with the porous GPLRC core, but the EIM may be valid for the cases of nonlinear vibration and nonlinear bending analyses of the same panel resting on Pasternak elastic foundations. Graphical abstract","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45979553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance of polycarboxylate superplasticisers in seawater-blended cement: Effect from chemical structure and nano modification","authors":"Jun Ren, Shuo Yan, Yunhui Fang, Zhenhe Tian, Hao Li, J. Guo, F. Xing, Yiding Fan, Xianfeng Wang, Zengle Ren","doi":"10.1515/ntrev-2023-0573","DOIUrl":"https://doi.org/10.1515/ntrev-2023-0573","url":null,"abstract":"Abstract The performance of polycarboxylate superplasticisers (PCE) in cement blended with seawater (SW) depends on its molecular structure since large ions in SW significantly influenced its mechanism. The aim of this study was to investigate the effect of the molecular structure of PCE on the fresh properties of SW-blended cement pastes. A series of six PCEs with different charge densities, side chain lengths, and anchor groups were modified by introducing nanosilica and their physicochemical properties were characterised, and the performance was evaluated by determined by minislump, rheological behaviour and setting time. Finally, the potential mechanism was proposed via measurement of adsorption amount and layer thickness, and water film thickness (WFT). The results showed that the PCE with longer side chains and higher AA:HEPG ratio provided a significant improvement in the workability of cement pastes mixed with SW. According to the flow curves from the rheology experiments, analysis of the rheological behaviour of polycarboxylate superplasticisers in SW-blended cements paste by three rheological models. By adsorption measurement and WFT testing, high higher AA:HPEG ratio exhibits high sorption and WFT indicating less inhibition by ions in SW. Graphical abstract","PeriodicalId":18839,"journal":{"name":"Nanotechnology Reviews","volume":" ","pages":""},"PeriodicalIF":7.4,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41536680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}