Nanoscale Advances最新文献

{"title":"UiO-66-NH2 metal–organic framework supported palladium/Schiff-base complex as a highly efficient and robust catalyst for the Suzuki reaction†","authors":"Shiva Kargar and Dawood Elhamifar","doi":"10.1039/D5NA00087D","DOIUrl":"10.1039/D5NA00087D","url":null,"abstract":"<p >The synthesis of C–C bonds is considered one of the most fundamental challenges in both organic chemistry and the chemical industry, as these bonds are essential for the preparation of high-value products. Therefore, it is crucial to develop efficient, cost-effective, and environmentally sustainable methods for C–C bond formation. In this context, herein, a novel Schiff-base/Pd-functionalized Zr-based UiO-66 MOF (UiO-66/SB-Pd) is synthesized through a straightforward post-modification process and utilized as a highly efficient catalyst in the Suzuki C–C coupling reaction. The designed UiO-66/SB-Pd material was characterized by using FT-IR, EDX, PXRD, TGA, N<small>₂</small> adsorption–desorption and SEM analyses. This catalyst displayed remarkable catalytic performance and stability in the Suzuki coupling reaction, facilitating the synthesis of a wide range of biaryl compounds. The catalyst retained its activity after seven consecutive cycles. Moreover, a leaching test indicated the excellent stability of the Pd active species under the reaction conditions.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 13","pages":" 4194-4204"},"PeriodicalIF":4.6,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12138816/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248834","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":"Introduction to nanomaterials in catalysis and sensing applications","authors":"Thanh-Danh Nguyen, Dinh Quang Khieu, Nguyen Hoang Tuan and Mita Dasog","doi":"10.1039/D5NA90028J","DOIUrl":"10.1039/D5NA90028J","url":null,"abstract":"<p >A graphical abstract is available for this content</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 12","pages":" 3601-3602"},"PeriodicalIF":4.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12120559/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144199644","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":"Ultrasmall Bi/Bi2O3 nanoparticles as biocompatible and efficient CT imaging contrast agents†","authors":"Le T. T. Tam, Duong T. Ngoc, Nguyen T. N. Linh, Le T. Tam, Nguyen V. Dong, Nguyen T. Yen, Nguyen T. Suong, Ngo T. Dung and Le T. Lu","doi":"10.1039/D5NA00389J","DOIUrl":"10.1039/D5NA00389J","url":null,"abstract":"<p >Computed tomography (CT) imaging is a widely used diagnostic tool, but conventional iodine-based contrast agents suffer from limitations such as short circulation time and potential nephrotoxicity. In this study, we present a simple one-pot thermal decomposition method for synthesizing ultrasmall Bi/Bi<small>₂</small>O<small>₃</small> nanoparticles (NPs) using a commercial Bi(NO<small>₃</small>)<small>₃</small> precursor and a surfactant mixture of oleic acid and oleylamine. Oleylamine acts as a reducing agent, facilitating the conversion of Bi<small>³⁺</small> to metallic Bi, while the Bi<small>₂</small>O<small>₃</small> oxide layer is controlled by adjusting the oleic acid-to-oleylamine ratio. To enhance biocompatibility and aqueous dispersibility, the NPs are further modified with polyacrylic acid (PAA), resulting in Bi/Bi<small>₂</small>O<small>₃</small>@PAA NPs with an ultra-small size, high Bi content, and stability. X-ray attenuation measurements reveal that Bi/Bi<small>₂</small>O<small>₃</small>@PAA NPs exhibit superior contrast enhancement compared to the traditional iodine-based contrast agents, with increasing efficacy at higher tube voltages. Given their facile synthesis, excellent biocompatibility, and outstanding imaging performance, Bi/Bi<small>₂</small>O<small>₃</small>@PAA NPs hold significant promise as next-generation CT contrast agents for clinical applications.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 13","pages":" 4183-4193"},"PeriodicalIF":4.6,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12132058/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144225985","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":"Systematic investigation of ABO3 perovskite synthesis to generalise a La and Rh co-doping strategy for visible light photocatalysis†","authors":"Thomas D. Small, Mahmoud Adel Hamza, Yideng Shen, Cameron J. Shearer and Gregory F. Metha","doi":"10.1039/D5NA00338E","DOIUrl":"10.1039/D5NA00338E","url":null,"abstract":"<p >Photocatalysts present a promising method of producing cheap and green hydrogen. However, most highly-efficient photocatalysts are active to only UV light, which is only 4% of the power in sunlight. Consequently, commercial photocatalysis can only be achieved by developing efficient materials active to visible light (47% of sunlight). Co-doping La and Rh into the perovskite oxide, SrTiO<small>₃</small> is known to create visible light photocatalysts as part of a Z-scheme system. Here, we rationally apply this strategy to SrTiO<small>₃</small> and five other ABO<small>₃</small> perovskites. The A and B-site elements (Sr, Ba, Zr, and Ti) were systematically varied within periodic groups to fabricate six different perovskites: SrZrO<small>₃</small>, SrZr<small>_0.5</small>Ti<small>_0.5</small>O<small>₃</small>, SrTiO<small>₃</small>, BaZrO<small>₃</small>, BaZr<small>_0.5</small>Ti<small>_0.5</small>O<small>₃</small>, and BaTiO<small>₃</small>. The elemental composition of the resulting perovskite affected particle size, crystallinity, morphology, and bandgap. All six perovskites were then co-doped with La and Rh and in every case the doped materials demonstrated red-shifted bandgap. Further, four La,Rh co-doped perovskites demonstrated photocatalytic hydrogen production under visible light (405 and 455 nm). Consequently, the La, Rh co-doping strategy was successfully generalised from SrTiO<small>₃</small> to ABO<small>₃</small> perovskites. La,Rh:BaTiO<small>₃</small> exhibited the narrowest bandgap (2.58 eV) and the second highest photocatalytic activity. These properties establish La,Rh:BaTiO<small>₃</small> as a potential commercial visible-light active photocatalyst.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 14","pages":" 4313-4324"},"PeriodicalIF":4.6,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12139449/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248833","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":"A melamine supported on TiO2 coated Fe3O4@C nanocomposite as a bifunctional, effective and reusable catalyst for the Knoevenagel condensation reaction†","authors":"Somayeh Abaeezadeh, Alireza Salimi Beni and Aliyeh Barzkar","doi":"10.1039/D5NA00155B","DOIUrl":"10.1039/D5NA00155B","url":null,"abstract":"<p >In this study, a novel magnetic melamine-supported on TiO<small>₂</small> coated Fe<small>₃</small>O<small>₄</small>@carbon nanocomposite with a core–shell structure (Fe<small>₃</small>O<small>₄</small>@C@TiO<small>₂</small>/melamine) as a bifunctional catalyst is successfully synthesized <em>via</em> chemical grafting of propylmelamine groups on an Fe<small>₃</small>O<small>₄</small>@C@TiO<small>₂</small> nanocomposite. The physicochemical properties of this catalyst were characterized by VSM, EDX, XRD, FT-IR, TGA and SEM techniques. The catalytic activity of Fe<small>₃</small>O<small>₄</small>@C@TiO<small>₂</small>/melamine was studied in the Knoevenagel condensation of ethyl cyanoacetate with various benzaldehydes (electron-donating and electron-withdrawing groups) at 50 °C under solvent-free conditions. This catalyst was recovered and reused several times without significant decrease in efficiency and stability.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 13","pages":" 4152-4160"},"PeriodicalIF":4.6,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12117384/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144180266","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":"A machine learning approach to wastewater treatment: Gaussian process regression and Monte Carlo analysis†","authors":"Nimra Nadeem, Zubair Khaliq, Abdulaziz Bentalib, Muhammad Bilal Qadir, Fayyaz Ahmad, Muhammad Wakil Shahzad and Abdulrahman Bin Jumah","doi":"10.1039/D4NA01064G","DOIUrl":"10.1039/D4NA01064G","url":null,"abstract":"<p >This study aimed to analyze the application of Gaussian Process Regression (GPR) modeling to improve the accuracy of degradation response predictions in wastewater treatment. Three crucial factors, <em>i.e.</em>, catalyst (CFA–ZnF), oxidant (H<small>₂</small>O<small>₂</small>), and pollutant (MB) concentration, were selected to evaluate their impact on the response variable (degradation) using the GPR model. The range of factors was 5–15 mg/100 mL for CFA–ZnF, 5–15 mM for H<small>₂</small>O<small>₂</small>, and 5–15 ppm for MB concentration. The GPR model predicted the pairwise correlations of CFA–ZnF (0.4499, <em>p</em> = 0.0465) and H<small>₂</small>O<small>₂</small> (0.4543, <em>p</em> = 0.0442) with degradation, which are moderately positive, while MB showed a weak negative correlation (−0.1686, <em>p</em> = 0.4774). Partial correlations also indicated strong positive correlations with degradation for CFA–ZnF (0.5143, <em>p</em> = 0.0290) and H<small>₂</small>O<small>₂</small> (0.5180, <em>p</em> = 0.0277). The superiority of the GPR model was validated by comparing the Gaussian Process Regression Mean (RPAE value) of 0.92689 with the Polynomial Regression Mean (RPAE value of 2.2947). Besides, the simultaneous interpretation of the effects of the three predictors on the response variable was enabled using the GPR model, which is impossible when interpreting the polynomial regression model. Therefore, the GPR offers superior modeling, deeper insights, and reliable predictions, proving it to be a more sustainable and effective method for pollutant degradation in wastewater treatment than polynomial modeling.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 14","pages":" 4436-4449"},"PeriodicalIF":4.6,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12150233/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144275349","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":"Structure, morphology, optical properties, and Judd–Ofelt analysis of YP(1−x)VxO4:Eu3+ materials synthesized by the combustion method","authors":"Nguyen Vu, Ngo Khac Khong Minh, Thai Thi Dieu Hien, Pham Duc Roan, Lam Thi Kieu Giang, Nguyen Thanh Huong, Hoang Thi Khuyen, Pham Thi Lien, Dinh Manh Tien, Nguyen Trung Kien and Dao Ngoc Nhiem","doi":"10.1039/D4NA01052C","DOIUrl":"10.1039/D4NA01052C","url":null,"abstract":"<p >YP<small>_{(1−<em>x</em>)}</small>V<small>_<em>x</em></small>O<small>₄</small>:Eu<small>³⁺</small> materials were synthesized <em>via</em> a simple combustion method. Material characterization illustrated the formation of spherical particles with a tetragonal crystal structure and a uniform size of 20 nm, although aggregation was observed. Fluorescence spectroscopy was then employed to explore the optical characteristics, revealing key insights into the luminescent behavior of the as-prepared materials. A detailed examination of the branching ratio of the <small>⁵</small>D<small>₀</small> → <small>⁷</small>F<small>₂</small> electronic transition relative to the <small>⁵</small>D<small>₀</small> → <small>⁷</small>F<small>₁</small> transition was performed, which is closely tied to the symmetry of the local environment of the Eu<small>³⁺</small> activators. This investigation utilized Judd–Ofelt theory to calculate intensity and emission parameters. Additionally, the fluorescence lifetime of the material was measured under various V/P ratios, elucidating the relationship between these variables. Finally, the emission color and correlated color temperature (CCT) of the synthesized material were evaluated through the CIE 1931 chromaticity diagram, confirming its potential for use in optical applications based on its tunable emission characteristics.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 13","pages":" 4077-4086"},"PeriodicalIF":4.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12107622/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144174246","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":"Machine learning to predict gold nanostar optical properties†","authors":"Peiying Wu, Rui Zhang, Céline Porte, Fabian Kiessling, Twan Lammers, Sima Rezvantalab, Sara Mihandoost and Roger M. Pallares","doi":"10.1039/D5NA00265F","DOIUrl":"10.1039/D5NA00265F","url":null,"abstract":"<p >Gold nanostars (AuNS) are nanoparticles with spiky structures and morphology-dependent optical features. These include strong extinction coefficients in the visible and near-infrared regions of the spectrum, which are commonly exploited for biomedical imaging and therapy. AuNS can be obtained <em>via</em> seedless protocols with Good's buffers, which are beneficial because of their simplicity and the use of biocompatible reagents. However, AuNS growth and optical properties are affected by various experimental factors during their seedless synthesis, which affects their performance in diagnosis and therapy. In this study, we develop a workflow based on machine learning models to predict AuNS optical properties. This approach includes data collection, feature selection, data generation, and model selection, resulting in predictions of the first and second localized surface plasmon resonance positions within 9 and 15% of their true values (root-mean-squared percentage error), respectively. Our results highlight the benefits of using machine learning models to infer the optical properties of AuNS from their synthesis conditions, potentially improving nanoparticle design and production for better disease diagnosis and therapy.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 13","pages":" 4117-4128"},"PeriodicalIF":4.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12108964/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144174224","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":"CuNi–PTC metal–organic framework: unveiling pseudocapacitive energy storage and water splitting capabilities†","authors":"Samika Anand and Kalathiparambil Rajendra Pai Sunajadevi","doi":"10.1039/D5NA00300H","DOIUrl":"10.1039/D5NA00300H","url":null,"abstract":"<p >Metal–organic frameworks (MOFs), owing to their distinctive structural properties and customizable functionalities, have been garnering significant attention in the pursuit of advanced energy storage and conversion technologies. In this work, a bimetallic MOF, CuNi–PTC, has been synthesized through a straightforward method. Investigations reveal its potential as a high-performance electrode material for supercapacitors and as an electrocatalyst for water splitting. The CuNi–PTC MOF features a large specific surface area, hierarchical porosity, and strong structural stability, as evidenced by spectroscopic and electron microscopy analyses. As a supercapacitor electrode material, CuNi–PTC delivers an impressive specific capacitance of 1066.24 F g<small>⁻¹</small> at a current density of 1 A g<small>⁻¹</small>, along with excellent cycling stability, retaining 94% of its capacity after 5000 charge–discharge cycles. Additionally, the electrocatalytic performance of CuNi–PTC for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) was assessed, showing overpotentials of 212 mV for the HER and 380 mV for the OER at a current density of 10 mA cm<small>⁻²</small>, along with exceptional long-term durability.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 13","pages":" 4129-4141"},"PeriodicalIF":4.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12110346/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144174222","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":"Giving new life to an outdated spectrofluorometer for static and time-resolved UCNP optical characterization†","authors":"Tomás Di Napoli, Juan M. Bujjamer, Marcos Illescas, Beatriz Barja and Hernán E. Grecco","doi":"10.1039/D5NA00330J","DOIUrl":"10.1039/D5NA00330J","url":null,"abstract":"<p >The obsolescence of proprietary, closed-source software and electronics renders high-quality scientific equipment inoperable, particularly affecting low-income countries where replacement costs hinder research and student training. Institutions often prioritize renewing equipment that addresses the needs of a larger user base, thereby limiting the emergence of research lines, such as up-conversion studies, that require more specific equipment. Refurbishing older equipment with open-source solutions offers a cost-effective way to extend its lifespan while introducing new functionalities. In this work, we present the refurbishment and enhancement of a 30 year-old Horiba PTI QuantaMaster 400 spectrofluorometer, retrofitted to perform not only steady-state, but also time-resolved spectral measurements. We replaced the outdated control system, which relied on proprietary ISA boards and closed-source FelixGX software running on Windows 95, with a modern Red Pitaya (RP) CPU and FPGA board running Linux. We developed a Python application that replicates the original functionality through both a graphical user interface (GUI) and an application programming interface (API). Additional improvements included replacing the monochromator motor driver with DRV8825 integrated circuits controlled by the RP's digital IO, as well as integrating photon counting through the RP's analog inputs. We added a computer controlled infrared laser to enable steady-state and time-resolved spectroscopic measurements of the upconversion process. We demonstrate such extended system capabilities by characterizing β-NaYF<small>₄</small>:Yb<small>³⁺</small>, Er<small>³⁺</small> upconversion nanoparticles (UCNPs) in the millisecond range with microsecond resolution. The refurbished instrument now operates with open source software and hardware, offering enhanced functionality, programmability, and long-term sustainability, providing a cost-effective solution for advancing research in resource-limited settings.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 13","pages":" 4214-4220"},"PeriodicalIF":4.6,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12139447/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144248820","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}