Nanoscale Advances最新文献

{"title":"hBN/TiO2 water-based nanolubricants: a solution for stick–slip mitigation in tribological applications†","authors":"Afshana Morshed, Fei Lin, Hui Wu, Zhao Xing, Sihai Jiao, Md Mahadi Hasan and Zhengyi Jiang","doi":"10.1039/D4NA01049C","DOIUrl":"10.1039/D4NA01049C","url":null,"abstract":"<p >In this study, the stick–slip behaviour of synthesised water-based nanolubricants was investigated <em>via</em> an Rtec ball-on-disk tribometer. By varying the lubricating conditions, including the concentration of hBN/TiO<small>₂</small> as nanoadditives, the tribological properties and lubrication mechanisms were analysed, especially the stick–slip phenomenon. Compared with dry and wet conditions, the hBN/TiO<small>₂</small> nanolubricant presented better efficiency in mitigating stick–slip and achieving friction stability. The relationship between anti-stick–slip properties and lubrication assisted in the selection of high-performance water-based nanoadditives. At a concentration of 0.5 wt% hBN/TiO<small>₂</small>, the nanolubricant achieved the lowest average coefficient of friction (COF) of up to 78% compared to that under dry conditions. Additionally, the 0.5 wt% hBN/TiO<small>₂</small> nanolubricant showed an excellent anti-stick–slip effect, with the overall stick–slip phenomenon and threshold speed reduced by 77% and 72%, respectively, compared with those under dry conditions. Moreover, the findings indicate that the anti-stick–slip effect under wet conditions is superior to that under dry conditions. The mechanism of hBN/TiO<small>₂</small> nanoadditives in inhibiting stick–slip behaviour involves trapping wear debris and forming uniform tribofilms. It can be predicted that an optimal concentration of hBN/TiO<small>₂</small> (0.5 wt%) can eliminate the stick–slip phenomenon and effectively improve the friction state of the sliding interface.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 1972-1988"},"PeriodicalIF":4.6,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11826335/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143433492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cuprous iodide implanted in hot-water-soluble-starch coating of ferrite nanoparticles: efficient catalysts for on-water click synthesis of 1,2,3-triazoles†","authors":"Seyyed Mohammad Rezapour Mousavi and Kurosh Rad-Moghadam","doi":"10.1039/D4NA00883A","DOIUrl":"10.1039/D4NA00883A","url":null,"abstract":"<p >Conglomerates of CuI nanoparticles combined with ferrous ferrite (FF) and cobalt ferrite (CF) nanoparticles were obtained using hot-water-soluble starch (HWSS) as a green adhesive possessing a strong complexing affinity for both the ferrites and CuI nanoparticles. Our findings indicate that the size of the CuI nanoparticles is closely related to the size of the ferrite nanoparticles, suggesting that the CuI nanoparticles grafted from the HWSS coating of the ferrite nanoparticles. The TEM image, size histograms derived from FE-SEM images and XRD patterns of the resulting composites revealed that the growth of CuI nanoparticles led to formation of conglomerates and not encapsulation of the ferrite nanoparticles. More interestingly, HWSS impacts oppositely on coercivities of the ferrites. The catalytic efficacy of the resulting nano-composites, CuI@HWSS@CF and CuI@HWSS@FF, in the one-pot synthesis of 1,2,3-triazoles through the click reaction of alkyl halides, sodium azide, and phenylacetylene “on water” is described. The use of a biocompatible nano-catalyst, easy catalyst recycling and high yields of the triazoles within short reaction times are the significant advantages of the synthetic method presented here.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 1901-1913"},"PeriodicalIF":4.6,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11808399/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143399539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep co-deposition of polydopamine in PVDF hydrogel to enhance photothermal evaporation efficiency†","authors":"Yu Ma, Lan Yang, Shangdi Wu, Liran Xu and Hua Huang","doi":"10.1039/D4NA00963K","DOIUrl":"10.1039/D4NA00963K","url":null,"abstract":"<p >Polydopamine (PDA) is a widely utilized photothermal conversion material recognized for its ease of synthesis and environmental friendliness. However, its relatively weak light absorption capabilities lead to lower photothermal efficiency, restricting its application in solar steam generation (STG) processes. To effectively enhance light absorption, this study introduces a deep co-deposition method for the microstructural design of STG membranes. Unlike traditional surface co-deposition methods, which coat a layer of PDA on the membrane surface, the deep co-deposition method allows for the incorporation of PDA within the internal nanohydrogel structural units of the membrane. This approach significantly increases the PDA loading, resulting in a marked enhancement of light absorption capabilities. In the near-infrared region (800–2500 nm), where the light absorption of PDA is relatively weak, the absorbance improved from 70.18% (surface co-deposition) to 88.20% (deep co-deposition). While PDA has been extensively studied across various fields, its application as a structural and functional additive in hydrogels remains limited, particularly in comparison to the rapid advancements in PDA-based surface-engineered hydrogels. Thus, this study may provide valuable insights for related research areas.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 1892-1900"},"PeriodicalIF":4.6,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11808334/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143399541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Docetaxel-conjugated bile acid-derived nanomicelles can inhibit tumour progression with reduced toxicity†","authors":"Devashish Mehta, Chhavi Dua, Ruchira Chakraborty, Poonam Yadav, Ujjaini Dasgupta and Avinash Bajaj","doi":"10.1039/D4NA00715H","DOIUrl":"10.1039/D4NA00715H","url":null,"abstract":"<p >Docetaxel (DTX) is a highly effective chemotherapy drug commonly employed in the management of multiple cancers, such as breast, lung, and prostate cancer. However, its clinical usage is significantly hampered by its limited solubility, which limits its bioavailability, and its considerable toxic effects like neutropenia, neuropathy, and hypersensitive reactions. These limitations necessitate the development of innovative formulations to boost the therapeutic index of DTX. In this study, we aimed to enhance the tolerability and reduce the toxic effects of DTX by developing a novel hybrid scaffold (PIP-LCA-DTX), where we conjugated DTX to piperidine-derived lithocholic acid. This hybrid scaffold integrates the beneficial properties of bile acid-based drug conjugates and cationic amphiphiles to form stable and effective drug delivery systems. Our research demonstrates that PIP-LCA-DTX exhibits similar anticancer properties to DTX when tested against murine colon cancer (CT26) and melanoma (B16-F10) cell lines, indicating that the hybrid retains the therapeutic efficacy of the original drug. Our findings revealed that PIP-LCA-DTX forms stable nanomicelles (DTX-NMs) with an average hydrodynamic diameter of &lt;150 nm and provides a promising delivery system by enhancing the solubility and stability of DTX. DTX-NMs showed significantly better tolerability and enhanced therapeutic efficacy (survival) compared to DTX alone. This improved tolerability, combined with the maintained therapeutic efficacy of DTX-NMs against murine cancer models, suggests that this hybrid scaffold could offer a more viable and safer option for cancer treatment.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 2003-2010"},"PeriodicalIF":4.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11832056/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143449728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biological and mechanical properties of a self-curing acrylic resin enriched with AgNPs as a proposal for orthopedic aparatology","authors":"Christian Andrea Lopez-Ayuso, Rene Garcia-Contreras, Ravichandran Manisekaran, Mario Figueroa, Manuel Rangel-Grimaldo, Mariano Jacome, Ruben Abraham Dominguez-Perez, Salvador Lopez-Morales, Sol Cristians and Laura Susana Acosta-Torres","doi":"10.1039/D4NA00846D","DOIUrl":"10.1039/D4NA00846D","url":null,"abstract":"<p >Polymethylmethacrylate (PMMA) is widely used in dentistry, but its inherent characteristics, such as roughness and porosity, can facilitate the formation of bacterial biofilms. However, the integration of silver nanoparticles (AgNPs) can provide antimicrobial properties. Ongoing research endeavors aim to preserve post-nanoaggregation biocompatibility without compromising the mechanical integrity of the material. In this study, we investigated the biological and mechanical attributes of a PMMA nanocomposite infused with AgNPs biosynthesized from <em>Pelargonium</em> × <em>hortorum</em>. A method has been described to incorporate nanoparticles into the polymer at minimum concentrations. In the results, LC-MS-MS revealed the presence of 56 biochemical compounds. UPLCHRESIMS-MS/MS was used to compare the phytochemical profiles of the leaf extract of <em>Pelargonium</em> × <em>hortorum</em> before and after the formation of AgNPs, which were identified with spherical morphology, an absorbance of 28.5 ± 8.16 nm and a particle size of 415 nm. The MIC of AgNPs was 10 μg mL<small>⁻¹</small>. In bacterial MTT, a decrease to 18.2 ± 2.5% with PMMA-10 μg mL<small>⁻¹</small> was observed (<em>p</em> &lt; 0.05). Decreased cell viability was found only in PMMA-0 μg mL<small>⁻¹</small> at 89.1 ± 6.7%, indicating no cytotoxicity. These findings suggest a promising bionano material that is suitable for orthodontic and orthopedic devices and warrants further research.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 2068-2082"},"PeriodicalIF":4.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11840714/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143483662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cost-effective fabrication of submicron-scale patterns enabled by microcontact printing with a pre-strained soft elastomeric stamp†","authors":"Eunhwan Jo and Jaesam Sim","doi":"10.1039/D4NA00757C","DOIUrl":"10.1039/D4NA00757C","url":null,"abstract":"<p >While photolithography and e-beam lithography remain the predominant techniques for nanoscale patterning, their high costs and inherent complexity have limited their accessibility for certain applications. Recently, shrink lithography has emerged as a promising technique for reducing pattern dimensions through substrate contraction, offering a simpler and cost-effective alternative to existing methods. In this study, we propose a method combining microcontact printing with a pre-stretched soft elastomeric stamp to achieve scalable pattern reduction. We introduce the pre-stretching and releasing of the Ecoflex-based soft elastomeric stamp in microcontact printing processes, leveraging its excellent stretchability and elasticity. This approach allows for the reduction of the original pattern dimensions by up to 60%. Furthermore, by experimentally quantifying the shrinkage with respect to the applying strain, we characterize the degree of pattern reduction, which offers a promising alternative for fabricating sub-micron scale features, with potential applications in scalable nano-manufacturing.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 6","pages":" 1736-1741"},"PeriodicalIF":4.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11791514/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143256126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fabrication of novel ternary g-C3N4/Zn0.5Ni0.5Fe1.8Mn0.2O4/rGO hybrid nanocomposites for humidity sensing†","authors":"Moksodur Rahman, Md. Lutfor Rahman, Bristy Biswas, Md. Farid Ahmed, Md. Aftab Ali Shaikh, Shirin Akter Jahan and Nahid Sharmin","doi":"10.1039/D4NA00579A","DOIUrl":"10.1039/D4NA00579A","url":null,"abstract":"<p >This research focuses on the fabrication of novel ternary g-C<small>₃</small>N<small>₄</small>/Zn<small>_0.5</small>Ni<small>_0.5</small>Fe<small>_1.8</small>Mn<small>_0.2</small>O<small>₄</small>/rGO hybrid nanocomposites (NCs) for humidity sensing applications. The integration of carbon based two dimensional (2D) materials—reduced graphene oxide (rGO) and graphitic carbon nitride (g-C<small>₃</small>N<small>₄</small>)—with spinel ferrite nanoparticles (Zn<small>_0.5</small>Ni<small>_0.5</small>Fe<small>_1.8</small>Mn<small>_0.2</small>O<small>₄</small>) in a ternary configuration aims to exploit their distinct properties synergistically, enhancing humidity sensing capabilities. Zn<small>_0.5</small>Ni<small>_0.5</small>Fe<small>_1.8</small>Mn<small>_0.2</small>O<small>₄</small>, Zn<small>_0.5</small>Ni<small>_0.5</small>Fe<small>_1.8</small>Mn<small>_0.2</small>O<small>₄</small>/rGO, and g-C<small>₃</small>N<small>₄</small>/Zn<small>_0.5</small>Ni<small>_0.5</small>Fe<small>_1.8</small>Mn<small>_0.2</small>O<small>₄</small> have been synthesized for comparison. The study involves the synthesis process, structural characterization, and evaluation of humidity sensing performance. X-ray peak profiling reveals that the crystallite sizes of the composites are ∼10–14 nm, whereas the particle size range is 6–25 nm from transmission electron microscopy. The XPS survey of the NCs has shown good interaction with water molecules by adsorption processes, which indicates the suitability of the materials for humidity sensing. The dielectric and magnetic properties of the NCs were studied in detail. The fabricated nanocomposites exhibit promising results, showing sensitivity to varying humidity levels of 11–98% with good response and recovery characteristics. The investigation into the nanoscale interactions between different components seeks to elucidate the mechanisms underlying the enhanced sensing properties, with potential applications in environmental monitoring, healthcare, and consumer electronics.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 6","pages":" 1489-1504"},"PeriodicalIF":4.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11827606/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143433491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Copper-anchored polysulfonamide-modified UiO-66-NH2/sodium alginate nanocatalyst for sustainable synthesis of 1,2,3-triazoles†","authors":"Samaneh Koosha, Ramin Ghorbani-Vaghei and Sedigheh Alavinia","doi":"10.1039/D4NA01055H","DOIUrl":"10.1039/D4NA01055H","url":null,"abstract":"<p >An effective nanocomposite comprising a metal–organic framework and porous polysulfonamide-sodium alginate (SA-PS) was developed for phenyl triazole production. The Cu(<small>I</small>) ions were uniformly distributed on the as-prepared UiO-66-NH<small>₂</small>@SA-PS matrix, coordinated by sulfonamide groups in a bidentate bridging pattern (UiO-66-NH<small>₂</small>@SA-PS/CuI). The nanocatalyst UiO-66-NH<small>₂</small>@SA-PS/CuI demonstrated exceptional performance in the synthesis of 1,2,3-triazole derivatives, facilitating high product yields in the reaction of various aryl boronic acids, phenylacetylene, and sodium azide under mild conditions.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 1937-1945"},"PeriodicalIF":4.6,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11808793/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143399537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Graphene quantum dots as potential broad-spectrum antiviral agents†","authors":"Younghun Jung, Jaehyeon Hwang, Hyeonwoo Cho, Jeong Hyeon Yoon, Jong-Hwan Lee, Jaekwang Song, Donghoon Kim, Minchul Ahn, Byung Hee Hong and Dae-Hyuk Kweon","doi":"10.1039/D4NA00879K","DOIUrl":"10.1039/D4NA00879K","url":null,"abstract":"<p >As pandemic viruses have become a threat to people, various treatments have been developed, including vaccines, neutralizing antibodies, and inhibitors. However, some mutations in the target envelope protein limit the efficiency of these treatments. Therefore, the development of broad-spectrum antiviral agents targeting mutation-free viral membranes is of considerable importance. Herein, we propose graphene quantum dots (GQDs) as broad-spectrum antiviral agents, wherein the amphiphilic properties of GQDs destroy the viral membranes, regardless of the type of viruses, including SARS-CoV-2 and influenza virus. We observed that GQDs suppress both viral infection and replication and demonstrated their low cytotoxicity in a cell line and a mouse model, revealing the potential of GQDs as a universal first-line treatment for various viral diseases.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 2032-2038"},"PeriodicalIF":4.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11833456/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143458693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unlocking a radioactive pertechnetate (TcO4−) treatment process with functionalized metal–organic frameworks (MOFs)","authors":"Kankan Patra, Samraj Mollick, Arijit Sengupta and Satya R. Guchhait","doi":"10.1039/D4NA00779D","DOIUrl":"10.1039/D4NA00779D","url":null,"abstract":"<p >Technetium-99 (<small>⁹⁹</small>Tc), a troublesome radioisotope prevalent in nuclear liquid waste, poses significant environmental and human health hazards due to its long half-life, high fission yield, and fast environmental mobility. The successful mitigation of <small>⁹⁹</small>Tc is imperative for nuclear waste management; however, it continues to present a significant obstacle. In this comprehensive review, we explore the state-of-the-art developments in separating TcO<small>₄</small><small>⁻</small> ions using functionalized metal–organic framework (MOF) materials, spanning from 2010 to the present. We delve into the intricate separation mechanisms of TcO<small>₄</small><small>⁻</small> ions, shedding light on advanced research avenues in this field. Furthermore, we aim to provide a comprehensive understanding of the underlying receptor chemistry that is necessary for the specific targeting of pertechnetate anion-based materials. This will provide valuable insights into the molecular characteristics that are crucial for the separation of TcO<small>₄</small><small>⁻</small> ions from solutions containing nuclear waste. The review outlines perspectives and conclusions that pave a promising path for the comprehensive investigation of materials poised to revolutionize TcO<small>₄</small><small>⁻</small> separation. Finally, we provide forward-looking recommendations for future research directions, opportunities, and associated challenges, to encourage more researchers to leverage TcO<small>₄</small><small>⁻</small> selective materials for better management of environmental pollution.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 4","pages":" 984-1008"},"PeriodicalIF":4.6,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11780403/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143080580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}