Nanoscale Advances最新文献

{"title":"Hydrothermally synthesised Gd₂Te₄O₁₁ nanorods for broadband visible light photodetection and NLO applications.","authors":"Manoranjan Sahoo, Prabhukrupa Chinmay Kumar, Ramakanta Naik","doi":"10.1039/d6na00631k","DOIUrl":"10.1039/d6na00631k","url":null,"abstract":"<p><p>Rare earth tellurium oxides belong to a wide bandgap group, which makes them prominent candidates for optoelectronic applications. Gadolinium tellurate (IV) (GTO) samples with varying concentration ratios of Gd and Te were synthesised through a hydrothermal method. All samples confirmed the Gd₂Te₄O₁₁ structure with a monoclinic crystal system. Nanorods are observed in most samples, and EDX confirmed the presence of the constituent elements. The XPS study was carried out to obtain the chemical composition and oxidation states. Optical studies of materials showed band gap values lying between 4.1 eV and 4.3 eV. From the photoresponse study, it is clear that the performance of all GTO photodetector devices (PDs) is good. The nonlinear optical (NLO) study confirmed that the nonlinear refractive index dominated over two-photon absorption for all samples, with a maximum nonlinear refractive index of 3.305 × 10^-5 cm² W^-1 and a nonlinear optical susceptibility of 38.811 × 10^-4 (esu). All the samples showed a high figure of merit (FOM), with a maximum value of 195.789. This makes GTO samples suitable for all nonlinear optical devices and optical switching applications.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":"6427-6437"},"PeriodicalIF":6.3,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13636259/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149111902","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":"Retraction: Iron-selenide-based titanium dioxide nanocomposites as a novel electrode material for asymmetric supercapacitors operating at 2.3 V.","authors":"Muhammad Zia Ullah Shah, Hongying Hou, Muhammad Sajjad, Muhammad Sanaullah Shah, Kashif Safeen, A Shah","doi":"10.1039/d6na90072k","DOIUrl":"10.1039/d6na90072k","url":null,"abstract":"<p><p>[This retracts the article DOI: 10.1039/D2NA00842D.].</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":"6073"},"PeriodicalIF":6.3,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13591313/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149017361","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":"Data-driven machine learning optimisation of silver nanoparticle synthesis.","authors":"Joseph Carver, Y M John Chew, Semali Perera, Sourav Chatterjee","doi":"10.1039/d6na00557h","DOIUrl":"10.1039/d6na00557h","url":null,"abstract":"<p><p>Precise control of silver nanoparticle (Ag-NP) size is critical for application-specific performance, yet identification of optimal synthesis conditions remains reliant on trial-and-error experimentation. Here, we report a machine learning inverse design framework trained on a combined experimental dataset spanning batch and continuous flow reactor configurations. Five regression algorithms were evaluated as candidate surrogate models, with Gaussian process (GP) regression emerging as the best-performing model (coefficient of determination (<i>R</i> ²) = 0.91 and cross-validation score = 0.80). A random sampling strategy was employed to explore the parameter space and identify synthesis conditions capable of achieving user-defined target Ag-NP hydrodynamic diameters. To differentiate between the multiple feasible solutions, a composite candidate scoring function was implemented to rank synthesis conditions according to the error, estimated Ag-NP dispersity, and posterior uncertainty. The framework was validated across 21 inverse design predictions spanning a target size range of 20-70 nm, achieving average size errors of 3.4% and 7.4% for the batch and flow reactors, respectively. Collectively, this work establishes an experimentally validated inverse design framework capable of identifying synthesis conditions for target Ag-NP hydrodynamic diameters <i>via</i> citrate- and tannic acid-mediated reduction of silver nitrate.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":"6229-6242"},"PeriodicalIF":6.3,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13592209/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149017305","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":"Interfacial electronic reconstruction and charge-transfer kinetics in colloidally assembled S-scheme MoSe₂/porphyrin heterostructures for solar water splitting.","authors":"Giang Thi Nguyen, Anh Hoang Nguyen, Nguyet Minh Thi Quan, Mai Thi Nguyen, Matteo Tonezzer, Duong Duc La, Thuy Dieu Thi Ung, Long Duy Pham, Tung Thanh Nguyen, Duy Van Lai","doi":"10.1039/d6na00780e","DOIUrl":"https://doi.org/10.1039/d6na00780e","url":null,"abstract":"<p><p>Rational interfacial engineering of organic-inorganic heterostructures is pivotal for advancing solar-driven water splitting. In this work, a 3D/1D S-scheme heterojunction, integrating 2H-MoSe₂ nanoflowers and TCPP porphyrin nanofibers, was synthesized <i>via</i> a scalable non-covalent self-assembly approach. Structural characterization reveals that the hierarchical MoSe₂ architectures, composed of ultrathin nanosheets, are intimately coupled with π-conjugated porphyrin networks, resulting in a nearly three-fold increase in specific surface area (84.96 m² g^-1) relative to pristine MoSe₂. Detailed band alignment analysis confirms a pronounced interfacial electronic reconstruction and the establishment of a built-in electric field, characteristic of an S-scheme configuration. Under simulated solar illumination, this configuration promotes the selective recombination of lower-energy carriers, effectively preserving highly reductive electrons in the LUMO of TCPP and highly oxidative holes in the valence band of MoSe₂. Consequently, the optimized heterostructure exhibits significantly accelerated oxygen evolution reaction (OER) kinetics characterized by a low Tafel slope of 101 mV dec^-1. This work presents a strategic design of S-scheme photocatalysts for efficient hydrogen evolution, providing a robust pathway toward sustainable solar fuel production.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":6.3,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13632634/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149111833","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":"K₂PtCl₄-induced structural reconstruction of high-entropy sulfide hollow nanospheres for enhanced hydrogen evolution.","authors":"Yinghao Cui, Wenyang Zhang, Yusuke Yamauchi, Yoshiyuki Sugahara","doi":"10.1039/d6na00484a","DOIUrl":"https://doi.org/10.1039/d6na00484a","url":null,"abstract":"<p><p>We report the synthesis of K₂PtCl₄-treated high-entropy sulfide (HES) nanospheres <i>via</i> a two-step liquid-phase synthesis involving solvothermal formation of (Co,Ni,Cu,Zn,Mn)₃S₄ hollow spheres and subsequent K₂PtCl₄ solution treatment. The resulting nanospheres exhibit a well-defined hollow morphology. The K₂PtCl₄ solution treatment induces partial structural reconstruction of the HES framework, producing a Pt-containing amorphous region while retaining part of the crystalline spinel domain. The resulting catalyst also demonstrates excellent catalytic activity for the hydrogen evolution reaction (HER), delivering low overpotentials of 50 mV at 10 mA cm^-2 in 1.0 M KOH and 49 mV at 10 mA cm^-2 in 0.5 M H₂SO₄. It also demonstrates good long-term durability, retaining 71% and 98% of its initial current density after 60 h of continuous operation at constant potentials corresponding to an initial current density of 100 mA cm^-2 under alkaline and acidic conditions, respectively, and maintaining almost constant polarization behavior after 5000 CV cycles under both conditions. These findings highlight the potential of K₂PtCl₄-treated HES as efficient and durable electrocatalysts for sustainable hydrogen production across a wide pH range.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":6.3,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13687670/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149270727","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-nanodiamond membranes for atomic-impact sensing: design and fluorescence readout limits.","authors":"Johannes Fiedler, Sabrina D Eder, Justas Zalieckas","doi":"10.1039/d6na00363j","DOIUrl":"10.1039/d6na00363j","url":null,"abstract":"<p><p>Hybrid nanomaterial platforms that combine mechanically compliant two-dimensional membranes with optically active quantum emitters offer an attractive route towards ultrasensitive particle detection. Here, we investigate a sensor concept based on a graphene membrane suspended over a nanoscale aperture and functionalised with fluorescent nanodiamonds. The impact of an incoming atom transfers momentum to the membrane and excites an out-of-plane mechanical motion, which is transduced into an optical signal through the nanodiamond fluorescence. We develop a quantitative upper-bound model linking atomic momentum transfer, the mechanical response of the nanodiamond-loaded membrane, and the resulting optical transduction. Design maps for the mechanical resonance frequency and collision-induced oscillation amplitude reveal single-impact displacements in the femtometre-to-sub-picometre range for helium atoms. Even under favourable mechanical, collision, and optical conditions, the corresponding relative fluorescence modulation remains below 10^-6 throughout the investigated parameter space and reaches only a few 10^-7 under the most favourable conditions. Combined with photon-counting statistics, these results show that direct fluorescence-intensity detection of individual atomic impacts is impractical in the considered configuration. Importantly, the analysis identifies optical displacement transduction, rather than the absence of a mechanical response, as the principal limitation. The predicted absolute displacements approach the scale accessible to state-of-the-art graphene optomechanical measurements, making interferometric or cavity-based displacement readout a more promising direction, although single-impact detectability remains dependent on bandwidth and noise. Our results establish quantitative feasibility bounds for graphene-nanodiamond atomic-impact sensors and identify the readout mechanism as the central design parameter for future hybrid nano-mechanical sensing architectures.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":"6220-6228"},"PeriodicalIF":6.3,"publicationDate":"2026-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13592093/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149017416","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":"Structural and optical properties of ligand-free noble metal nanoclusters synthesized by ns-pulsed laser ablation at the argon-water interface.","authors":"Guilherme Conceição Concas, Mariana Gisbert, Tahir, Natan Gonzaga, Francesco Enrichi, Anna Safonova, Michele Cassetta, Sven Reichenberger, Theo Fromme, Alexandre Cuin, Ricardo Aucelio, Tatiana Dillenburg Saint'Pierre, Isabel Cristina Dos Santos Carvalho, Wanessa Afonso de Andrade, Rajwali Khan, Zubair Ahmed, Sajid Farooq, Alexandre Mello, Nicola Daldosso, Tommaso Del Rosso","doi":"10.1039/d6na00468g","DOIUrl":"10.1039/d6na00468g","url":null,"abstract":"<p><p>Fully inorganic ligand-free noble metal nanoclusters (NCs) are a challenging system to obtain due to the fact that conventional chemical synthesis introduces surface-bound contaminants. Here, we present a one-step method for synthesizing highly pure, photoluminescent gold (Au) and silver (Ag) NCs by using Pulsed Laser Ablation at the argon-water interface to ensure an entirely CO₂-free ablation environment. The colloids generated contain a mixture of larger plasmonic nanoparticles and small photoluminescent NCs that have been separated by centrifugation to yield ultrasmall NCs with a mean radius of about 1.8 nm (Au) and 1.4 nm (Ag). Comprehensive analysis by means of TEM, HRTEM, XRD, XPS, surface-enhanced Raman spectroscopy (SERS), and steady-state and time-resolved photoluminescence was performed to assess the absence of carbonaceous contaminants and to give a clear structural, optical, and chemical characterization of the two systems. XPS measurements demonstrated that the surface of the nanostructures exhibited predominantly metallic contributions. However, the silver nanostructures exhibited approximately 20% oxidation, while the gold nanostructures exhibited approximately 4%. Both Au and Ag NCs exhibit similar photoluminescence in both the UV and visible (blue) regions, with Quantum Yields (QY) around 1.2% (Au) and 2.0% (Ag) in the blue region. Time-resolved measurements reveal nanosecond-scale decays with two components: a fast decay of 2-3 ns and a slower decay of 6-9 ns. Notably, the fast component contributes ≈80% of the decay for Au NCs, but only ≈50% for Ag NCs, indicating differences in excited-state relaxation pathways specific to the metal, probably associated with the different degree of oxidation. Surprisingly, UV-Vis absorption spectroscopy reveals a strong absence of the conventional Localized Surface Plasmon Resonance (LSPR) band, showing instead a monotonic, molecular-like interband absorption profile. We hypothesize that this anomalous suppression of the LSPR peaks may be linked to unique features of the PLAL process, such as surface oxidation and a polycrystalline structure, which may artificially trigger quantum-size effects in 3.5 nm particles by confining the electronic response within subcrystalline grains. These fully inorganic NCs remain stable in water, providing a clean platform for understanding the fundamental properties of light behavior in noble metal nanostructures.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":6.3,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13607954/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149040275","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":"Efficient naphthalene removal <i>via</i> PMS-assisted photocatalysis over Ni/Co-BMOF.","authors":"Rahul Badru, Rai Singh, Simranjeet Kaur, Khushboo Verma, Sandeep Kaushal","doi":"10.1039/d6na00475j","DOIUrl":"10.1039/d6na00475j","url":null,"abstract":"<p><p>A Ni/Co bimetallic metal-organic framework (MOF) photocatalyst was synthesized and applied for the degradation of naphthalene in an aqueous solution under UV irradiation. The prepared MOF was characterized using XRD, FT-IR spectroscopy, FESEM, HRTEM, XPS, and BET analyses and TGA. Structural analyses confirmed the formation of cubic-shaped particles with a uniform shape, and Co and Ni were present in the +3 and +2 oxidation states, respectively. The prepared MOF showed excellent photocatalytic activity, achieving a maximum naphthalene degradation efficiency of 94.9% in 100 min under optimized conditions. In the absence of the photocatalyst, only 5.2% removal was observed, confirming the role of the photocatalyst in the degradation. Among the tested catalyst dosages, NC-IV (40 mg) exhibited the best performance, with a pseudo-first-order rate constant of 0.0281 min^-1. The pH strongly influenced the degradation process, and the maximum removal was obtained at pH 9. Additionally, scavenging studies confirmed the generation of hydroxyl and sulfate radicals in the reaction mechanism. The findings reveal the exploration of bimetallic MOF systems for the efficient removal of persistent aromatic pollutants from water.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":"5972-5983"},"PeriodicalIF":6.3,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13576456/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148977279","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":"Toward economically viable green hydrogen production: enhanced catalytic atom-efficiency, dual-functional systems, and non-traditional water sources.","authors":"Yuru Liu, Pengpeng Wu, Lin Huang, Junyan Yang, Ningning Song, Jiuyang He, Zhanjun Guo, Minmin Liang","doi":"10.1039/d6na00555a","DOIUrl":"10.1039/d6na00555a","url":null,"abstract":"<p><p>The light-driven hydrogen evolution reaction (HER) represents a promising renewable energy conversion technology to combat the global energy crisis, particularly as the field shifts toward utilizing abundant water sources including wastewater and seawater rather than freshwater. However, achieving an economically viable levelized cost of hydrogen (LCOH) requires overcoming several fundamental challenges. First, the leading photocatalytic systems rely heavily on Pt cocatalysts to achieve sufficient surface reaction kinetics, the scarcity and high cost of which severely limit scalability. Second, conventional photocatalytic HER systems consume sacrificial agents (<i>e.g.</i>, Na₂S, Na₂SO₃, and TEOA) as hole scavengers, elevating the LCOH through continuous reagent consumption while forfeiting opportunities for value creation. Third, the extensive usage of freshwater in the HER process competes with the freshwater usage for humans and agricultural purposes. In this review, we briefly introduce the fundamentals of the light-driven HER process and establish a set of standardized parameters for evaluating both photocatalytic performance and techno-economic feasibility. Subsequently, we systematically review the recent advances in three key areas: (1) strategies for enhancing the catalytic atom-efficiency, (2) innovative dual-functional photocatalytic systems that productively harness photogenerated holes to synthesize value-added products, including through the utilization of wastewater, and (3) seawater-based feedstocks. By integrating LCOH analysis with technical performance evaluation across diverse strategies and water sources, this review aims to accelerate the transition toward sustainable, green and cost-competitive photocatalytic hydrogen production.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":"6099-6112"},"PeriodicalIF":6.3,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13621353/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149081598","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":"Visible-light driven degradation of tetracycline and ciprofloxacin using a Z-scheme FeS₂@polythiophene heterostructure photocatalyst.","authors":"Maruthasalam Pannerselvam, Vadivel Siva, Abdul Samad Shameem, Anbazhagan Murugan, Krishnasamy Padmavathi, Murugan Dineshkumar, Shaik Gouse Peera","doi":"10.1039/d6na00587j","DOIUrl":"10.1039/d6na00587j","url":null,"abstract":"<p><p>The development of efficient and reusable visible-light-driven photocatalysts is essential for the sustainable removal of emerging pharmaceutical contaminants from wastewater. In this study, a FeS₂@polythiophene (FeS₂@PTh) heterostructure has been synthesized using a simple <i>in situ</i> chemical oxidative polymerization method. The synthesized FeS₂@PTh was used as a visible-responsive photocatalyst for the degradation of tetracycline (TC) and ciprofloxacin (CIP) from an aqueous medium. XPS analysis confirmed the existence of Fe²⁺, Fe³⁺, and S 2p species, with a significant interface between the FeS₂ and PTh systems. FeS₂@PTh exhibited higher degradation performance, removing 83% of TC (<i>k</i> = 1.422 × 10^-2 min^-1) and 85% of CIP (<i>k</i> = 1.687 × 10^-2 min^-1) under visible-light irradiation. Moreover, this study highlighted the excellent photostability and reproducibility of the photocatalysts, contributing to the development of sustainable photocatalytic materials for efficient water treatment.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" ","pages":""},"PeriodicalIF":6.3,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13648040/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149137632","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}