Nanoscale最新文献

{"title":"Molecular additive-driven control of Cu/Cu₂O nanoparticle growth on mesoporous silica for enhanced photocatalytic hydrogen production","authors":"Santosh V Mohite, Artavazd Kirakosyan, Kwangchan An, Yeong Seok Shim, Jihoon Choi, Yeonho Kim","doi":"10.1039/d5nr02191j","DOIUrl":"https://doi.org/10.1039/d5nr02191j","url":null,"abstract":"Size-controlled cuprous oxide-based nanoparticles (NPs) are promising materials for enhancing visible-light-driven photocatalytic hydrogen production by increasing the number of Cu+ surface-active sites. This study investigates the role of molecular additives in the growth of Cu/Cu₂O NPs on mesoporous silica (m-SiO2) templates. The molecular additives, cetyltrimethylammonium bromide (CTAB), ascorbic acid (AA), and citric acid (CA) are analyzed for their ability to modify the zeta potential of m-SiO₂, facilitating the adsorption of Cu⁺ ions. The modified surface effectively controlled the interaction between Cu⁺ ions and the m-SiO₂ surface through the influence of molecular additives. The CTAB system facilitates a rapid nanoparticle (NP) growth rate and significant aggregation, thereby promoting Cu⁺ ion adsorption and subsequent larger NP formation. In contrast, CA provides better control over NPs formation, preventing aggregation through Cu²⁺ chelation and stabilizing it on the mesoporous voids of silica. Furthermore, the intensity ratio of metallic Cu to Cu₂O is the lowest value of 0.47 in the CA system, indicating a higher Cu₂O content compared to CTAB and AA systems. It was observed that the CTAB and AA systems are more favorable for the formation of metallic Cu in the NPs. As a result, the CA system achieves a 5-fold increase in hydrogen production rate under visible light compared to the CTAB system. These findings highlight the critical role of molecular additives in tailoring NPs growth and photocatalytic performance.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"177 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341330","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":"Advancing Electrocatalytic CO₂ Reduction: Key Strategies for Scaling Up to Industrial Applications","authors":"Lei Wang, Yimin A. Wu","doi":"10.1039/d5nr01624j","DOIUrl":"https://doi.org/10.1039/d5nr01624j","url":null,"abstract":"Electrocatalytic CO₂ reduction (eCO2RR) to high value-added C2+ products offers a highly promising pathway toward carbon neutrality and sustainable energy storage. However, the limited activity of current catalysts and the suboptimal configuration of reaction systems hinder the achievement of high C2+ selectivity and long-term operational stability, falling short of industrial application requirements. In this review, we take a unique perspective to examine recent advances in the functional design of catalysts and the optimization of reactor systems. We highlight that rational catalyst design can enhance C2+ product selectivity, while optimization of reactor components can improve system stability. The integration of innovative technologies with system-level optimization holds great potential to advance the scalability and economic feasibility of eCO2RR. This review bridges the gap between fundamental research and industrial application of eCO2RR, offering critical insights to guide its development as a practical and scalable technology. Keywords: Electrocatalytic CO2 reduction, C2+ products, product selectivity, system optimization, industrial applications.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"144 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341362","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":"Rashba effect modulation in two-dimensional A2B2Te6 (A = Sb, Bi; B = Si, Ge) materials via charge transfer","authors":"Haipeng Wu, Qikun Tian, Jinghui Wei, Ziyu Xing, Guangzhao Qin, Zhenzhen Qin","doi":"10.1039/d4nr04601c","DOIUrl":"https://doi.org/10.1039/d4nr04601c","url":null,"abstract":"Designing two-dimensional (2D) Rashba semiconductors, exploring the underlying mechanism of Rashba effect, and further proposing efficient and controllable approaches are crucial for the development of spintronics. On the basis of first-principles calculations, we here theoretically design all possible types (typical, inverse, and composite) of Janus structures and successfully achieve numerous ideal 2D Rashba semiconductors from a series of five atomic-layer A2B2Te6 (A = Sb, Bi; B = Si, Ge)materials. Considering the different Rashba constant αR and its modulation trend under external electric field, we comprehensively analyze the intrinsic electric field Ein in terms of work function, electrostatic potential, dipole moment, and inner charge transfer. Inspired by the quantitative relationship between charge transfer and the strength of Ein and even the αR, we propose a straightforward strategy of introducing a single adatom onto the surface of 2D monolayer to introduce and modulate the Rashba effect. Lastly, we also examine the growth feasibility and electronic structures of the Janus Sb2Ge2Se3Te3 system and Janus-adsorbed systems on a 2D BN substrate. Our work not only conducts a detailed analysis of A2B2Te6-based Rashba systems, but also proposes a new strategy for efficiently and controllably modulating the αR through the reconfiguration of charge transfer.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"101 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144370865","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":"CMOS-Integrable Ambipolar Tellurene nanofilm-based Negative Differential Transconductance Transistor for Multi-Valued Logic Computing","authors":"Jihoon Huh, Bolim You, Yuna Kim, Mino Yang, Unjeong Kim, Myung Gwan Hahm, Min-Kyu Joo, Moonsang Lee","doi":"10.1039/d5nr01748c","DOIUrl":"https://doi.org/10.1039/d5nr01748c","url":null,"abstract":"Despite growing interest, the development of nanomaterial-based ternary inverters has often been hindered by the requirement for complex structures, which limit scalability and integration. In this study, we present a complementary metal oxide semiconductor (CMOS)-compatible ambipolar Te nanofilm-based transistor with negative differential transconductance (NDT), which presents considerable potential for multi-valued logic computing without requiring a complicated fabrication process. The hydrothermally synthesized Te nanoflakes, encapsulated with an Al₂O₃ thin film via thermal atomic layer deposition, exhibited ambipolar behavior with distinct NDT characteristics. They are driven by Fermi level modulation and doping profile transitions, thereby supporting transitions through hole diffusion, band-to-band tunneling, and electron conduction. A Te transistor-based ternary inverter successfully demonstrated three stable logic states with a clear intermediate voltage state between the binary \"0\" and \"1\" states. We believe that this work highlights the potential of Te-based NDT transistors for next-generation computing architectures that can be implemented in high-data-density and energy-efficient operations.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"7 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335043","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":"Potential relationship of spin magnetic moment with thermal conductivity and catalytic performance in Fe-Co bimetallic catalysts: a machine-learning interatomic potential and density functional theory study.","authors":"Yuxi Zhu,Zhenqian Chen","doi":"10.1039/d5nr01565k","DOIUrl":"https://doi.org/10.1039/d5nr01565k","url":null,"abstract":"The thermal transport properties of catalysts are important for the stable operation of proton exchange membrane fuel cells. In this study, density functional theory and moment tensor potentials are used to solve the Boltzmann transport equation and investigate the thermal transport properties of various designed configurations of Fe-Co bimetallic catalysts, which are the most promising non-noble metal catalysts for the oxygen reduction reaction (ORR). It is found that the velocity of the phonon group in the y direction is always higher than that in the x direction, which leads to the anisotropic thermal conductivity of these catalysts. The uniformity of the thermal conductivity exhibited by bimetallic catalysts is better than that of single-metal atom catalysts. In the designed configurations, G-FeCoN6-3 is found to show a high thermal conductivity value (55.57-376.98 W m-1 K-1), which is even higher than that of G-FeN4 (35.66-132.75 W m-1 K-1). The analysis of phonon transport properties shows that the difference in thermal conductivity is mainly due to the difference in the phonon lifetime. The results indicate that thermal conductivity is governed by low-frequency phonons and the size effects are intensified in bimetallic catalysts. It is revealed from results on electronic structures that the low thermal conductivity may be related to the existence of band gaps in valence bands. Furthermore, these structures exhibit superior electrical conductivities with values of 0.98-2.2 × 104 Ω-1 m-1. Additionally, through the results of the maximum electron thermal conductivity of these structures, it is revealed that the thermal conductivity of these catalysts is mainly dominated by the lattice thermal conductivity. Finally, a potential relationship of spin magnetic moment with the thermal conductivity and catalytic performance is revealed.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"12 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144328908","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":"A flexible all-solid-state supercapacitor based on carbon-supported Ni-embedded boron nitride.","authors":"Shrabani De,Binod Raj Kc,Gayani Pathiraja,Bishnu Prasad Bastakoti","doi":"10.1039/d5nr01926e","DOIUrl":"https://doi.org/10.1039/d5nr01926e","url":null,"abstract":"It is challenging to identify alternative uses for hazardous pollutant materials that can benefit the environment. Non-biodegradable, toxic waste cigarette filters can be used as a good source of low-cost carbon for electrode materials. A new combination of Ni-embedded boron nitride (BN) with carbon derived from cigarette filters is reported as an efficient electrode for a flexible all-solid-state asymmetric supercapacitor. The incorporation of nickel nanoparticles inside BN nanosheets helps to restrict their layer stacking tendency and induce redox-active centres in 2D layers which tune their electrochemical properties. The incorporation of a conducting carbon backbone into the Ni-embedded boron nitride facilitates electron transfer pathways, thereby enhancing its electrochemical performance. The fabricated all-solid-state asymmetric supercapacitor exhibited excellent flexibility and durability for up to 250 bending cycles. The device exhibited high specific capacitance, power density, and energy density of 47 F g-1, 4395.7 W kg-1, and 7.9 W h kg-1, respectively, with a volumetric energy density of 0.25 mW h cm-3 at 2 A g-1. The device exhibited excellent cycling stability, with 86% specific capacitance retention after 10 000 charging-discharging cycles. The real-time application of the flexible device was also tested by glowing up a red LED. The described method will pave the way for waste management solutions to produce flexible energy storage materials. This study reports such a unique combination of waste cigarette filter-derived carbon-supported Ni-embedded BN for flexible supercapacitors.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"1 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144328907","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":"Development of phenylboronic acid functionalized poly (lactic-co-glycolic acid) nanoparticles for novel co-delivery of chemo-herbal combination towards lung cancer: an in silico and in vitro proof of concept†","authors":"Ankaj Kumar, Anshu Gupta, Anurag Saini, Sudhagar Selvaraju, Kalyan Kumar Sethi and Arvind Gulbake","doi":"10.1039/D5NR01407G","DOIUrl":"10.1039/D5NR01407G","url":null,"abstract":"<p >This study includes a novel chemo-herbal combination using biochanin A (BCA) and lenvatinib (LTB) to synergize each other's anti-cancer activities. Phenylboronic acid (PBA)-functionalized poly (lactic-<em>co</em>-glycolic acid) (PLGA) was employed to specifically target the sialic acid overexpressed in lung cancer. ATR, DSC, and NMR studies confirmed the successful synthesis of PBA-PLGA, which was further utilized for the development of BCA and LTB co-loaded PBA-PLGA nanoparticles (PBA-PLGA-BCA-LTB NPs). A higher <em>in silico</em> docking score between LTB and different proteins of endothelial growth factor receptors (EGFRs) and a combination index value &lt;1 supported the chemo-herbal combination regimen for lung cancer. In addition, the significantly higher protein expression (cle-PARP and cle-cas-3) from BCA-LTB explains the strong apoptotic effect. The optimized PBA-PLGA-BCA-LTB NPs exhibited a 182.2 ± 6.88 nm, 0.134 ± 0.074 polydispersity index, and −32.2 ± 3.40 mV zeta potential. ATR, DSC, and PXRD studies confirmed the amorphous dispersion of BCA-LTB in the PBA-PLGA matrix. A higher binding constant and rate coefficient, with a Δ<em>H</em> of −5.69 ± 0.183 (kcal mol<small>⁻¹</small>), Δ<em>G</em> of −4.98 (kcal mol<small>⁻¹</small>), and −<em>T</em>Δ<em>S</em> of 0.706 (kcal mol<small>⁻¹</small>) using isothermal titration calorimetry (ITC) explained the enthalpy-driven specificity of PBA-PLGA towards sialic acid (Neu5AC). The prepared NPs showed physical stability at 4 ± 2 °C and were non-hemolytic and stable with plasma proteins. Significantly higher cytotoxicity and cellular uptake were observed for PBA-PLGA-BCA-LTB NPs in contrast to PLGA-BCA-LTB NPs and coarse-BCA-LTB. The PBA-PLGA-BCA-LTB NPs also exhibited anti-migration and invasion potential for A549 cells. <em>In vivo</em> pharmacokinetic studies indicated an increase in plasma half-life of the drugs and a decrease in hematological toxicities using PBA-PLGA-BCA-LTB NPs compared to free BCA-LTB. In summary, the PBA-PLGA-BCA-LTB NPs represent a biocompatible, potential, cancer-targeted, and effective treatment option for lung cancer treatment.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" 26","pages":" 15960-15987"},"PeriodicalIF":5.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144328909","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":"Studying How Small Silver Clusters Grow and Their Optical Properties","authors":"Blessing D. Peter, Qiuhao Yi, Zhixun Luo","doi":"10.1039/d5nr01269d","DOIUrl":"https://doi.org/10.1039/d5nr01269d","url":null,"abstract":"Understanding the mechanisms of cluster growth and precisely tailoring the structure-property relationship at the atomic level is challenging and essentially important in chemistry. In this study, we present a combined experimental and theoretical investigation into the structural stability, optical properties, and growth mechanisms of a series of small silver clusters coordinated by halides and nitrates along with 2-(diphenylphosphino)pyridine (dppy) protection ligands. Using single-crystal X-ray diffraction (XRD), we uncovered the structural evolution of these clusters and elucidated the factors contributing to their stability. Interestingly, all these small clusters displayed dual emissions in the UV and red regions, with the UV emission showing enhanced intensity relative to the red emission at around 620 nm when strong σ-donating ligands or polynuclear metallic cores were introduced. The unique optical properties were further analysed through comprehensive UV-visible spectroscopy, revealing redshifts in the dominant absorption band as the cluster size increases. Density functional theory (DFT) simulations corroborated the observed UV spectra and confirmed the occurrence of ligand-to-metal charge transfer (LMCT). This multidisciplinary study merges experimental and computational methods to deepen our understanding of the structural and optical properties of small silver clusters, shedding light on their growth mechanisms and enabling the targeted design of novel clusters for applications in nanotechnology and materials science.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"145 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329245","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":"Microwave-assisted synthesis of ZnO/BiNbO4 heterojunctions for enhanced hydrogen production†","authors":"Maria Kuznetsova, Priscila Hasse Palharim, Caroline Helena Claudino, José Javier Sáez Acuña, Karina P. M. Frin, Christophe Colbeau-Justin, Hynd Remita and Juliana dos Santos de Souza","doi":"10.1039/D5NR01637A","DOIUrl":"10.1039/D5NR01637A","url":null,"abstract":"<p >This work introduces a novel heterojunction between ZnO and BiNbO<small>₄</small>, prepared through a microwave-assisted technique that significantly reduces time and energy consumption for the synthesis. The used method requires 48 minutes to obtain vertically aligned wurtzite ZnO films and 30 minutes to obtain globular orthorhombic/triclinic BiNbO<small>₄</small>. The heterojunction exploits the suitable band alignment of ZnO and BiNbO<small>₄</small> to construct an S-scheme structure, achieving enhanced charge separation and transfer. The prepared ZnO/BiNbO<small>₄</small> heterojunction was used as a photoanode for water photosplitting, exhibiting a fourfold increase in photocurrents for oxygen evolution compared to pristine ZnO. The heterojunction has also demonstrated photocatalytic activity for hydrogen production that is 3.5 and 2 times higher than that of bare ZnO and BiNbO<small>₄</small>, respectively. These findings highlight the promising potential of ZnO/BiNbO<small>₄</small> heterojunctions for advanced photocatalytic and photoelectrocatalytic applications, particularly in hydrogen production.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" 26","pages":" 15706-15719"},"PeriodicalIF":5.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144328917","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":"Optoelectronic MXene quantum dots: frontiers in sensor technology for next-generation diagnostics and environmental monitoring","authors":"Ankur Singh, Supratim Mahapatra, Rajendra Prasad, Sumit Kumar Singh and Pranjal Chandra","doi":"10.1039/D5NR00854A","DOIUrl":"10.1039/D5NR00854A","url":null,"abstract":"<p >MXene QDs have garnered the attention of established as well as budding researchers as a new class of nanomaterial due to their exceptional properties and wide applicability. Advancements in nanotechnology and materials science have led the discovery of these, and explorations of their exceptional physicochemical characteristics have positioned them as a cutting-edge nanomaterial with immense potential for future innovation. This review explores the different aspects of MXene QDs, including fundamentals, functionalization, and the doping of precursors. The unique properties, including structural, electronic, optical properties, and biocompatibility, making these promising candidates for use in optoelectronic devices have been thoroughly discussed. The different methods used to formulate MXene QDs into functional versions, including ball milling, pyrolysis, molten salt, hydrothermal, and solvothermal synthesis, and ultrasonication have been elaborated on with suitable examples. This article also includes precise yet insightful discussion on the MXene-QD-based sensing of different molecular categories, <em>viz</em>. small molecules, macromolecules, and environmental pollutants. Additionally, this paper provides insightful discussion on sensor fabrication strategies, limits of detection (LODs), linear detection ranges (LDRs), synthetic routes, and real sample detection, along with the detection techniques involved in sensor development in various studies. This article brings fundamental insights ranging from the synthesis of MXene QDs to their deployment to real-time applications in order to understand the overall research scope along with translational bottlenecks from the perspective of future development.</p>","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":" 26","pages":" 15554-15591"},"PeriodicalIF":5.8,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319529","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}