Nanoscale Horizons最新文献

{"title":"Multi-scale carbon@Sb mesoporous composites activated by <i>in situ</i> localized electrochemical pulverization as high-rate and long-life anode materials for potassium-ion batteries.","authors":"Jie Ren, Xiang Wang, Jihao Li, Qianzi Sun, Shaozhou Li, Ling Bai, Xianming Liu, Guilong Liu, Ziquan Li, Haijiao Zhang, Zhen-Dong Huang","doi":"10.1039/d4nh00621f","DOIUrl":"https://doi.org/10.1039/d4nh00621f","url":null,"abstract":"<p><p>Hard carbon and antimony (Sb) are two promising anode candidates for future potassium-ion batteries. Herein, we successfully solve the low-capacity problem of highly conductive carbon and poor cycling stability of high-capacity Sb through uniformly dispersing and embedding sub-nano and nanoscale Sb particles (∼36.4 wt%) inside nitrogen-doped two-dimensional hard carbon nanosheets to form a multi-scale carbon@Sb mesoporous composite, denoted as Sb₃@HCNS. The electrochemical results show that the optimized Sb₃@HCNS anode exhibits an exceptional potassium-ion storage performance, delivering a reversible capacity of 580.8, 413.0, and 215.5 mA h g^-1 at the current density of 0.1, 1, and 4 A g^-1, respectively. Furthermore, it still maintains a high capacity of 382 mA h g^-1 at a high current density of 2 A g^-1 after 1000 cycles. The characterization results further manifest that the <i>in situ</i> localized electrochemical pulverization activation of Sb during the (de)alloying process and the pseudo-capacitive effect of good electronic conductive hard carbon nanosheets are mainly responsible for the exceptional properties of Sb₃@HCNS. Together with its controllable preparation strategy, the newly-developed Sb₃@HCNS composite is expected to be a promising anode material for high-performance potassium-ion batteries.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143381277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Block copolymer-assembled nanopore arrays enable ultrasensitive label-free DNA detection.","authors":"Maximiliano Jesus Jara Fornerod, Alberto Alvarez-Fernandez, Máté Füredi, Anandapadmanabhan A Rajendran, Beatriz Prieto-Simón, Nicolas H Voelcker, Stefan Guldin","doi":"10.1039/d4nh00466c","DOIUrl":"10.1039/d4nh00466c","url":null,"abstract":"<p><p>DNA detection <i>via</i> nanoporous-based electrochemical biosensors is a promising method for rapid pathogen identification and disease diagnosis. These sensors detect electrical current variations caused by DNA hybridization in a nanoporous layer on an electrode. Current fabrication techniques for the typically micrometers-thick nanoporous layer often suffer from insufficient control over nanopore dimensions and involve complex fabrication steps, including handling and stacking of a brittle porous membrane. Here, we introduce a bottom-up fabrication process based on the self-assembly of high molecular weight block copolymers with sol-gel precursors to create an inorganic nanoporous thin film directly on electrode surfaces. This approach eliminates the need for elaborate manipulation of the nanoporous membrane, provides fine control over the structural features, and enables surface modification with DNA capture probes. Using this nanoarchitecture with a thickness of 150 nm, we detected DNA sequences derived from 16S rRNA gene fragments of the <i>E. coli</i> genome electrochemically in less than 20 minutes, achieving a limit of detection of 30 femtomolar (fM) and a limit of quantification of 500 fM. This development marks a significant step towards a portable, rapid, and accurate DNA detection system.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11795167/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143187489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"Thermal evolution of solid solution of silica-embedded AgPt alloy NPs in the large miscibility gap.","authors":"Hemant Jatav, Anusmita Chakravorty, Ambuj Mishra, Matthias Schwartzkopf, Andrei Chumakov, Stephan V Roth, Debdulal Kabiraj","doi":"10.1039/d4nh00509k","DOIUrl":"https://doi.org/10.1039/d4nh00509k","url":null,"abstract":"<p><p>Understanding the phase behavior of immiscible elements in bimetallic nanomaterials is essential for controlling their structure and properties. At the nanoscale, the miscibility of these immiscible elements often deviates from their behavior in bulk materials. Despite its significance, comprehensive and quantitative experimental insights into the dynamics of the immiscible-to-miscible transition, and <i>vice versa</i>, remain limited. In this study, we investigate the nucleation and growth kinetics of silica-embedded AgPt nanoparticles (NPs) across a wide range of annealing temperatures (25 °C to 900 °C) to elucidate temperature-dependent nanoalloy phase transitions and NP size distribution. Our findings reveal that the alloy phase persists up to 400 °C, with a corresponding average NP size of ∼2 nm. Beyond this temperature, phase instability begins to occur. We propose a three-stage process of nucleation and growth: (1) initial AgPt nanoalloy formation during deposition, (2) growth <i>via</i> thermal energy-assisted diffusion up to 400 °C, and (3) Ag atom emission from the nanoalloy above 500 °C, indicating Ag diffusion towards the surface, followed by partial sublimation of Ag atoms at 900 °C. These results provide crucial insights into the thermal limits for the dealloying of NPs, growth kinetics, and phase stability or instability under varying thermal conditions.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tunable magnetoelectricity and polarity in van der Waals antiferromagnetic CuCr1−xFexP2S6†","authors":"Yu Xing, Haoshen Ye, Guowei Du, Xu Li, Le-Ping Miao, Junchao Zhang, Xiong Luo, Xiyu Chen, Haoran Ye, Aoli Shen, Zhicheng Wang, Yumeng You, Shuai Dong and Linglong Li","doi":"10.1039/D4NH00620H","DOIUrl":"10.1039/D4NH00620H","url":null,"abstract":"<p >The coexistence of electric and magnetic orders with intrinsic coupling, referred to as magnetoelectric coupling in multiferroics, has been extensively studied in oxide materials but remains relatively unexplored in van der Waals materials. Among these, CuCrP<small>₂</small>S<small>₆</small> (CCPS) is notable for its emergent antiferromagnetic (AFM) and antiferroelectric (AFE) characteristics. However, investigations into magnetoelectric coupling in CCPS are limited, and the effects of dopants on its magnetic properties have yet to be fully addressed. In this study, we synthesized CuCr<small>_{1−<em>x</em>}</small>Fe<small>_<em>x</em></small>P<small>₂</small>S<small>₆</small> (CCFPS) samples using the chemical vapor transport (CVT) method to investigate the influence of iron doping on the magnetic and nonlinear optical properties of the CCFPS system. Our results indicate that the AFM state is preserved, while the Néel temperature (<em>T</em><small>_N</small>) varies with the doping concentration. First-principles calculations were employed to assess the exchange interactions among magnetic atoms. Notably, for samples with doping concentrations <em>x</em> &lt; 0.5, we observed both magnetic-dielectric coupling and second harmonic generation (SHG) effects. However, these effects were absent at higher doping levels. Furthermore, our analysis revealed a distinct odd–even dependence of SHG, suggesting the presence of interlayer symmetry-breaking coupling. These findings advance our understanding of two-dimensional (2D) multiferroic materials and lay the groundwork for designing and optimizing magnetoelectric coupling materials with enhanced performance.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" 3","pages":" 561-567"},"PeriodicalIF":8.0,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/nh/d4nh00620h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143389552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 phosphomolybdenum blue nano-photothermal agent with dual peak absorption and biodegradable properties based on ssDNA in near-infrared photothermal therapy for breast cancer.","authors":"Baoru Fang, Siqi Geng, Ke Wang, Fang Wang, Yiqing Zhou, Jiaying Qin, Shengnan Luo, Yanping Chen, Zhangsen Yu","doi":"10.1039/d4nh00464g","DOIUrl":"https://doi.org/10.1039/d4nh00464g","url":null,"abstract":"<p><p>Photothermal therapy (PTT) stands as an emerging and promising treatment modality and is being developed for the treatment of breast cancer, prostate cancer, and a series of superficial tumors. This innovative approach harnesses photothermal agents (PTAs) that convert near-infrared light (NIR) energy into heat, efficiently heating and ablating localized lesion tissue. Notably, the low scattering of NIR-II (1000-1500 nm) band light within biological tissue ensures superior penetration depth, surpassing that of NIR I (700-900 nm) band light. Consequently, developing PTAs with excellent absorption performance and biocompatibility in the NIR-II band has attracted significant attention in photothermal therapy research. We successfully synthesized phosphomolybdenum blue (PMB) nanoparticles using single-strand DNA (ssDNA) as a template in this innovative study. Subsequently, we delved into this material's absorption characteristics and photothermal properties across the NIR-I and NIR-II spectral regions. Furthermore, we evaluated the therapeutic efficacy of PMB on 4T1 cells and tumor-bearing mouse models of breast cancer. Our findings revealed that PMB not only exhibits remarkable biocompatibility but also possesses stellar photothermal performance. Specifically, under 808 nm and 1064 nm laser irradiation, PMB achieved photothermal conversion efficiencies of 21.37% and 28.84%, respectively. Notably, compared to 808 nm laser irradiation, even when transmitting through a 2 mm thick tumor tissue homogenate, the 1064 nm laser irradiation maintained a robust tumor ablation effect. What's more, PMB possesses critical pH-responsive degradation properties. For instance, PMB nanoparticles degrade rapidly under physiological conditions (pH 7.2-7.4) while degrading slower in the acidic tumor microenvironment (pH 6.0-6.9). This unique characteristic significantly mitigates the systemic toxicity of PMB and enhances the safety of photothermal therapy implementation. Moreover, our study represents the first instance of utilizing ssDNA as a template for synthesizing a PMB nano photothermal agent and demonstrating its exceptional tumor thermal ablation efficacy. This groundbreaking work offers novel insights into the development of safe, efficient, and pH-responsive photothermal agents for cancer therapy.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143078050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rounding up Rh nanoparticles for ultraviolet plasmonic sensing.","authors":"Yikai Xu","doi":"10.1039/d5nh90005k","DOIUrl":"https://doi.org/10.1039/d5nh90005k","url":null,"abstract":"<p><p>This article highlights the recent work of D. M. Arboleda and V. Amendola <i>et al.</i> (<i>Nanoscale Horiz.</i>, 2025, <b>10</b>, 336-348, https://doi.org/10.1039/D4NH00449C) on the synthesis of rhodium nanospheres for ultraviolet and visible plasmonics.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143078057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Foundational insights for theranostic applications of magnetoelectric nanoparticles.","authors":"Victoria Andre, Mostafa Abdel-Mottaleb, Max Shotbolt, Shawnus Chen, Zeinab Ramezini, Elric Zhang, Skye Conlan, Ozzie Telisman, Ping Liang, John M Bryant, Roman Chomko, Sakhrat Khizroev","doi":"10.1039/d4nh00560k","DOIUrl":"10.1039/d4nh00560k","url":null,"abstract":"<p><p>Reviewing emerging biomedical applications of MagnetoElectric NanoParticles (MENPs), this paper presents basic physics considerations to help understand the possibility of future theranostic applications. Currently emerging applications include wireless non-surgical neural modulation and recording, functional brain mapping, high-specificity cell electroporation for targeted cancer therapies, targeted drug delivery, early screening and diagnostics, and others. Using an <i>ab initio</i> analysis, each application is discussed from the perspective of its fundamental limitations. Furthermore, the review identifies the most eminent challenges and offers potential engineering solutions on the pathway to implement each application and combine the therapeutic and diagnostic capabilities of the nanoparticles.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11789716/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143078054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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":"High-refractive-index 2D photonic structures for robust low-threshold multiband lasing.","authors":"Ana Conde-Rubio, Juan R Deop-Ruano, Luis Cerdán, Alejandro Manjavacas, Agustín Mihi","doi":"10.1039/d4nh00574k","DOIUrl":"https://doi.org/10.1039/d4nh00574k","url":null,"abstract":"<p><p>High-refractive-index (HRI) dielectrics are gaining increasing attention as building blocks for compact lasers. Their ability to simultaneously support both electric and magnetic modes provides greater versatility as compared to plasmonic platforms. Moreover, their reduced absorption loss minimizes heat generation, further enhancing their performance. Here, we employ a scalable soft nanoimprinting lithography method to create a series of two-dimensional (2D) periodic square hole arrays in polymeric films (SU-8), which are coated with an HRI dielectric layer (TiO₂). These structures exhibit low-threshold lasing from an organic dye-doped SU-8 layer deposited on top. We study arrays with different lattice parameters and a sample with a random distribution of holes, finding that the optimal laser performance occurs when the optical resonances of the array align with the emission wavelength range of the dye. Furthermore, we observe that the anisotropy in the TiO₂ coating breaks the polarization degeneracy of the square arrays, leading to the emergence of new modes and enabling the simultaneous appearance of multiple lasing peaks. Our work shows that, despite the simplicity of their fabrication process, the HRI structures studied here exhibit a high degree of complexity, leading to a rich optical response and enabling multiband lasing. This offers an innovative approach to building robust HRI platforms for lasing with improved control over their emission properties.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143051104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding the effects of adduct functionalization on C₆₀ nanocages for the hydrogen evolution reaction.","authors":"Joy Spears, Mina Shawky Adly, Edison Castro, Alain R Puente Santiago, Luis Echegoyen, Tianwei He, Christopher J Dares, Mohamed Noufal","doi":"10.1039/d4nh00586d","DOIUrl":"https://doi.org/10.1039/d4nh00586d","url":null,"abstract":"<p><p>In this work, we use experimental and theoretical techniques to study the origin of the boosted hydrogen evolution reaction (HER) catalytic activity of two pyridyl-pyrrolidine functionalized C₆₀ fullerenes. Notably, the mono-(pyridyl-pyrrolidine) penta-adduct of C₆₀ has exhibited a remarkable HER catalytic activity as a metal-free catalyst, delivering an overpotential (<i>η</i>₁₀) of 75 mV <i>vs.</i> RHE and a very low onset potential of -45 mV <i>vs.</i> RHE. This work addresses fundamental questions about how functionalization on C₆₀ changes the electron density on fullerene cages for high-performance HER electrocatalysis.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143045059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Semiconductor photocatalytic antibacterial materials and their application for bone infection treatment.","authors":"Ruizhong He, Yulong Gu, Jiye Jia, Feng Yang, Ping Wu, Pei Feng, Cijun Shuai","doi":"10.1039/d4nh00542b","DOIUrl":"https://doi.org/10.1039/d4nh00542b","url":null,"abstract":"<p><p>Bacterial infection in bone tissue engineering is a severe clinical issue. Traditional antimicrobial methods usually cause problems such as bacterial resistance and biosecurity. Employing semiconductor photocatalytic antibacterial materials is a more controlled and safer strategy, wherein semiconductor photocatalytic materials generate reactive oxygen species under illumination for killing bacteria by destroying their cell membranes, proteins, DNA, <i>etc.</i> In this review, P-type and N-type semiconductor photocatalytic materials and their antibacterial mechanisms are introduced. Type II heterojunctions, P-N heterojunctions, type Z heterojunctions and Schottky junctions have been reported to reduce the recombination of carriers, while element doping, sensitization and up-conversion luminescence expand the photoresponse range. Furthermore, the applications of semiconductor photocatalytic antibacterial materials in bone infection treatment such as osteomyelitis treatment, bone defect repair and dental tissue regeneration are summarized. Finally, the conclusion and future prospects of semiconductor photocatalytic antibacterial materials in bone tissue engineering were analyzed.</p>","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143027560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}