Nanoscale最新文献_第3页

P(TT-TPA) featuring conjugated extended structure: enabling high-performance flexible electrochromic-supercapacitors

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-28 DOI: 10.1039/d5nr00272a

Jiaming Li, Xu Cheng, Chunhui Du, Hui Shi, Wanyi Zhang, Li Sheng, Wenyuan Xu, Xubiao Luo, Ge Zhang

{"title":"P(TT-TPA) featuring conjugated extended structure: enabling high-performance flexible electrochromic-supercapacitors","authors":"Jiaming Li, Xu Cheng, Chunhui Du, Hui Shi, Wanyi Zhang, Li Sheng, Wenyuan Xu, Xubiao Luo, Ge Zhang","doi":"10.1039/d5nr00272a","DOIUrl":"https://doi.org/10.1039/d5nr00272a","url":null,"abstract":"Electrochromic-supercapacitors (EC-SCs) based on conducting polymers hold broad application prospects in fields such as smart electronic devices, wearable devices, and the Internet of Things. However, complex structures generated by their large molecular weights severely deteriorate the disorder of chain arrangements, which significantly hinders the migration of charge carriers within the chains and exerts an adverse impact on the opto/electric performance. In this work, triphenylamine (TPA) is adopted as the scaffold, and thieno[3,2-b]thiophene (TT) groups are introduced to successfully construct TT-TPA (HTPA) with a conjugated extended structure. Leveraging the intermolecular π-π stacking effect, effectively restricted the rotation of single bonds, significantly enhancing the molecular planarity. Concurrently, the introduction of multiple active sites opened up more channels for charge storage. The obtained P(TT-TPA) (PHTPA) films exhibit remarkable optical contrast (51% at 1050 nm) and outstanding energy storage capacity (177 F g-¹ at 1 A g-¹). The flexible devices based on PHTPA show significant color changes and excellent capacitive performance (46 F g-¹ at 1 A g-¹), as well as good bending resistance. In summary, the molecular design strategy of expanding the conjugated structure furnishes a certain theoretical foundation and referential significance for the development of EC-SCs electrode materials that balance comprehensive performances.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"118 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723948","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}

引用次数: 0

Design of engineered nanoparticles for biomedical applications by computational modeling

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-28 DOI: 10.1039/d4nr05199h

Diego Chaparro, Eirini Goudeli

引用次数: 0

N/Si-codoped nanocrystalline diamonds as highly sensitive luminescent thermometers

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-28 DOI: 10.1039/d4nr04132a

Mabel Rodríguez-Fernández, María Gragera, Iván Carrillo-Berdugo, Rodrigo Alcántara, Paulius Pobedinskas, Ken Haenen, Gonzalo Alba, David Zorrilla, Javier Navas

{"title":"N/Si-codoped nanocrystalline diamonds as highly sensitive luminescent thermometers","authors":"Mabel Rodríguez-Fernández, María Gragera, Iván Carrillo-Berdugo, Rodrigo Alcántara, Paulius Pobedinskas, Ken Haenen, Gonzalo Alba, David Zorrilla, Javier Navas","doi":"10.1039/d4nr04132a","DOIUrl":"https://doi.org/10.1039/d4nr04132a","url":null,"abstract":"Diamonds can host a variety of luminescent point-defects, such as nitrogen-vacancies and silicon-vacancies, making them remarkably promising materials for luminescence nanothermometry. It also fulfils the desirable characteristics of low cytotoxicity and good biocompatibility, and benefits of the carbon chemistry for tuneable surface functionalization with target molecules. In this work, N/Si co-doped nanocrystalline diamonds have been synthesized via microwave plasma enhanced chemical vapor deposition using different methane flow and temperature conditions, aiming for maximum photoluminescence intensity. In-depth analysis of the luminescence characteristics of NV- and SiV- emitting point-defects with temperature, from both experiments and ab initio calculations, suggests that a thermal coupling between their states exists, which allows for ratiometric approaches to be exploited for a more sensitive luminescent thermometry. A maximum thermal relative sensitivity of 5.5 % K-1 has been achieved. This is remarkable for in vitro temperature measurements of biological tissues.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"1 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723626","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}

引用次数: 0

In-intercalation and Si-containing protective layer enhance electrochemical performance of NaNi0.5Mn0.5O2 for sodium ion battery

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-28 DOI: 10.1039/d5nr00726g

Peng Sun, Chenhui Wang, Jing Liu, Jie Liao, Yaohan Fei, Ziyan Zhang, Ning Nie, Jiangjiexing Wu, You Han, Jinli Zhang, Wei Li

{"title":"In-intercalation and Si-containing protective layer enhance electrochemical performance of NaNi0.5Mn0.5O2 for sodium ion battery","authors":"Peng Sun, Chenhui Wang, Jing Liu, Jie Liao, Yaohan Fei, Ziyan Zhang, Ning Nie, Jiangjiexing Wu, You Han, Jinli Zhang, Wei Li","doi":"10.1039/d5nr00726g","DOIUrl":"https://doi.org/10.1039/d5nr00726g","url":null,"abstract":"Aiming at enhancing the electrochemical performance of cathode material NaNi0.5Mn0.5O2 (NM) for sodium ion battery, a novel Indium-intercalated cathode material NaNi0.5-xMn0.5InxO2 enriched with oxygen vacancies was first synthesized via high-shear co-precipitation method, then, a thin Si-containing protective layer was produced on the surface through the interfacial reaction between oxygen vacancies and tetraethyl orthosilicate. Through performance evaluation and characterizations including in-situ XRD, Ar+ sputtering XPS, STEM-HAADF, etc., the results indicate that the optimal sample Siy@NaNi0.497Mn0.5In0.003O2-y has the superior initial discharge capacity of 125.0 mAh g−1 (0.1 C) and exhibits excellent capacity retention of 98.4% after 100 cycles at 1 C; in particular, Si@In doped sample has larger lattice spacing, higher Na+ diffusion rate as well as better conductivity, comparing with both In-intercalating sample and the pristine NM. DFT calculations illustrate that the element In preferentially substitutes for the site of Mn atom while Si prefers to locate at Ni site close to the In-intercalating place, and Na+ diffusion energy barrier is greatly reduced with the In-intercalation and Si-doping. Such facile strategy to augment the lattice spacing of O3-layer cathode meanwhile produce thin protective layer utilizing the oxygen vacancies on the surface has promising applications to explore new cathode materials with high electrochemical performance for sodium-ion batteries.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"183 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143723628","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}

引用次数: 0

High Drag Reduction by Spontaneous Capture and Transportation of Bubble

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-27 DOI: 10.1039/d5nr00294j

Junyi Lin, Xinming Wang, Han Wang, Zening Sun, Defeng Yan, Jinlong Song

{"title":"High Drag Reduction by Spontaneous Capture and Transportation of Bubble","authors":"Junyi Lin, Xinming Wang, Han Wang, Zening Sun, Defeng Yan, Jinlong Song","doi":"10.1039/d5nr00294j","DOIUrl":"https://doi.org/10.1039/d5nr00294j","url":null,"abstract":"Gas lubrication is globally recognized as an effective technology for reducing drag. However, the injected gas bubbles are prone to escape, resulting in a low gas covering area and insufficient drag reduction efficiency. Here, we developed an underwater superaerophilic pattern composed of a serial structure and brachistochrone profile to spontaneously capture and transport gas bubbles, which effectively hindered the bubble escaping, expanded the gas covering area, and increased the drag reduction rate. The maximum drag reduction rates at a horizontal sample surface and an inclined sample surface under a water velocity of 0.6 m•s-1 were as high as 31.8% and 18.5%, respectively. In addition, the two-phase flow simulation showed that superaerophilic pattern still work and could realize a drag reduction rate of 13.25% even under a large flow velocity of 10 m•s-1. Moreover, the flowing gas layer on superaerophilic pattern also endowed an excellent corrosion resistance and marine antifouling. This high and eco-friendly underwater drag reduction method will will minimize the energy consumption required for ship navigation and greenhouse gas emission, which has a strong implication for the sustainable human development.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"14 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713432","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}

引用次数: 0

Uncovering the Electrocatalytic Potential of Two-Dimensional Pt-Ni Bimetallic Aerogels

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-27 DOI: 10.1039/d5nr00133a

Pavel Khavlyuk, Fiona Tenhagen, Volodymyr Shamraienko, René Hübner, Yuanwu Liu, Johannes Kresse, ANgelika Wrzesinska-Lashkova, Yana Vaynzof, Alexander Eychmueller

{"title":"Uncovering the Electrocatalytic Potential of Two-Dimensional Pt-Ni Bimetallic Aerogels","authors":"Pavel Khavlyuk, Fiona Tenhagen, Volodymyr Shamraienko, René Hübner, Yuanwu Liu, Johannes Kresse, ANgelika Wrzesinska-Lashkova, Yana Vaynzof, Alexander Eychmueller","doi":"10.1039/d5nr00133a","DOIUrl":"https://doi.org/10.1039/d5nr00133a","url":null,"abstract":"Metal aerogels have established themselves as promising materials for various applications across diverse fields, from sensing to soft neural implants. Since they emerged as a distinct class of materials in 2009, catalysis has been one of their most common application areas. However, even after a decade of research on metal aerogels for catalytic purposes, there remains room for improvement. The rising costs associated with production, driven by expensive drying techniques and costly metal precursors, have motivated the scientific community to explore alternative approaches and materials. This work investigates a film-like 2D Pt-Ni aerogel as a potential alternative for methanol oxidation reaction (MOR). This aerogel was fabricated using a recently reported phase-boundary gelation, which requires a low quantity of metal precursors and avoids the need for special drying techniques. Comparative studies of the 2D and 3D aerogels confirm their structural integrity and the characteristic high porosity. The 2D Pt-Ni aerogel demonstrates a reproducibly high electrochemically active surface area of approximately 50.6 m2 g-1 and an excellent mass activity for MOR of around 1.8 A mg-1, - surpassing both the 3D Pt-Ni aerogel and commercial Pt/C.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"3 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713434","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}

引用次数: 0

Self-Biased Silicon Transistor with Piezoelectric Gate for Efficient Mechanical Energy Harvesting Device

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-27 DOI: 10.1039/d4nr04090b

Utkarsh Pandey, Nila Pal, Sandeep Dahiya, Sobhan Hazra, Bhola Nath Pal

{"title":"Self-Biased Silicon Transistor with Piezoelectric Gate for Efficient Mechanical Energy Harvesting Device","authors":"Utkarsh Pandey, Nila Pal, Sandeep Dahiya, Sobhan Hazra, Bhola Nath Pal","doi":"10.1039/d4nr04090b","DOIUrl":"https://doi.org/10.1039/d4nr04090b","url":null,"abstract":"In this report, a piezo potential gated self-biased transistor has been fabricated on the heavily doped silicon (p+-Si) (111) substrate and used for efficient mechanical energy harvesting applications. The drain and source (S-D) electrode of this top gated transistor is made of LiF(5 nm)/Al(65 nm) and MoO3(5 nm)/Ag(65 nm) respectively whereas piezoelectric Poly (vinylidene fluoride-co-hexapropelene) (PVDF-HFP) thin film has been used as a gate dielectric. Drain bias (VDS) which is required to transport the hole carrier through the channel, has been developed from the work function difference of S-D electrodes whereas piezopotential which is developed due to the external force applied on the PVDF-HFP thin film works as gate bias of this transistor. As a consequence, this device converts mechanical energy to electrical energy very efficiently. For applied pressure of 4 bar for ~5 sec, the extracted electrical power per cycle of this device is 1.6 x 10-9 watts with a conversion efficiency of ~75% which is extremely high value w.r.t conventional energy harvesting devices. Besides, electrical characterization shows its transistor-like behavior and the extracted device parameters like threshold force, On-Off ratio, and subthreshold swing (SS) are 0.5 N, 4.56 x 102, and 3.16 N/A, respectively.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"125 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713361","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}

引用次数: 0

Fluorescent nonconjugated zwitterionic polymer dot: hydrothermal synthesis and application towards the nano-molar sensing of 2, 4, 6-trinitrophenol

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-27 DOI: 10.1039/d5nr00455a

Soumen Ghosh, Aayush Anand, Subrata Chattopadhyay

{"title":"Fluorescent nonconjugated zwitterionic polymer dot: hydrothermal synthesis and application towards the nano-molar sensing of 2, 4, 6-trinitrophenol","authors":"Soumen Ghosh, Aayush Anand, Subrata Chattopadhyay","doi":"10.1039/d5nr00455a","DOIUrl":"https://doi.org/10.1039/d5nr00455a","url":null,"abstract":"Developing nonconjugated polymer dot-based sensors with high quantum yield for a targeted application is a challenging research field. Herein we are reporting the synthesis of a zwitterionic polymer dots (PD PAMAM 2.5, average diameter 12 nm), which contains a poly(aminoamide) core and amine, acid groups on the surface. The molecular structure and functionalities of the polymer dot was carefully established by a number of spectroscopic techniques which include, NMR, FTIR, XPS etc. The polymer dot reveals greenish blue/aqua emission (λmax = 470 nm) with a quantum yield of 28%. Mechanism for the synthesis of polymer dots with respect to its structure and fluorescence property is examined by a combination techniques including NMR, zeta potential and fluorescence spectrometry. The application of the fluorescent polymer dot for selective detection of 2, 4, 6-trinitrophenol is studied in detail. The limit of detection is determined as 0.77 nM, which is among the best in context of the current state of art. Further, application of the polymer dot in real life applications is demonstrated using real life waste water samples and a paper based strip-test method.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"24 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713359","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}

引用次数: 0

Phase-tailored CoCrFeNiAl nitride for enhanced electrocatalytic hydrogen evolution via cooling-mediated plasma strategy

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-27 DOI: 10.1039/d5nr00153f

Bo Ouyang, Haonan Qin, Fengkun Li, Chen Li, Zhaofu Du, Yongqi Zhang, Li Yang, Erjun Kan, Kun Xu, Zhishan Mi

{"title":"Phase-tailored CoCrFeNiAl nitride for enhanced electrocatalytic hydrogen evolution via cooling-mediated plasma strategy","authors":"Bo Ouyang, Haonan Qin, Fengkun Li, Chen Li, Zhaofu Du, Yongqi Zhang, Li Yang, Erjun Kan, Kun Xu, Zhishan Mi","doi":"10.1039/d5nr00153f","DOIUrl":"https://doi.org/10.1039/d5nr00153f","url":null,"abstract":"Modulation of the surface structure of high-entropy-alloy-based nitrides (HEANs) is considered essential for improving electrocatalytic H2 production. Compared with thermal nitridation, the plasma technique is a favorable alternative to directly fabricate HEANs, but the excessive surface heating effect during plasma treatment inevitably causes thermally stabilized nitride formation, resulting in deterioration of the highly active structure. To optimize the hydrogen evolution reaction (HER) behavior of HEANs, a facile cooling-mediated plasma strategy is proposed to precisely modulate the HEAN structure (cp-HEAN). The resultant cp-HEAN framework shows a preserved FCC (111) facet and yields an increased amorphous proportion, leading to enhanced HER behavior. In comparison, the normal plasma technique causes FCC lattice distortion with increased precipitation owing to the excessively high surface thermal field (np-HEAN). Operando plasma diagnostics and numerical simulation further confirmed the effect of surface heating on typical plasma parameters and the HEAN framework, indicating that this was the key factor responsible for the high performance of the nitride electrocatalyst.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"125 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713358","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}

引用次数: 0

In-situ Synthesis of the Bimetallic Chalcogenides with Highly Conducting Carbon Nanotubes for Efficient Symmetric Hybrid Supercapacitor

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-03-27 DOI: 10.1039/d5nr00340g

Soumyajit Jana, Sampath Karingula, Anjana Sajeevan, V. V. N. Phanikumar, Yugender Goud Kotagiri

{"title":"In-situ Synthesis of the Bimetallic Chalcogenides with Highly Conducting Carbon Nanotubes for Efficient Symmetric Hybrid Supercapacitor","authors":"Soumyajit Jana, Sampath Karingula, Anjana Sajeevan, V. V. N. Phanikumar, Yugender Goud Kotagiri","doi":"10.1039/d5nr00340g","DOIUrl":"https://doi.org/10.1039/d5nr00340g","url":null,"abstract":"Achieving high energy density and long cycle stability in energy storage devices necessitates excellent electrochemical performance, which often relies on the innovative structural design of the materials under investigation. Therefore, hybrid supercapacitors are crucial in the realm of energy storage devices. The elevated energy density and power density, combined with various energy storage mechanisms, significantly improve electrochemical performance. Here, we developed a highly efficient electrode material, carbon nanotubes-metal chalcogenides (CNT-CuNiSe2), through a simple one-pot reflux method (in situ). The enhanced energy storage is achieved by synergising the CuNiSe2 with the pi-cloud of CNT, which leads to specific capacitance retainability over prolonged cycling stability. The hybrid supercapacitor electrode was formed with conducting carbon cloth (CC) with CNT-CuNiSe2 as a hybrid material, named as CC/CNT-CuNiSe2 material. The fabricated hybrid electrode materials were ideal for energy storage. The CC/CNT-CuNiSe2 has shown excellent energy storage capability by attaining a specific capacitance of 957.06 F/g at 1Ag. Hybrid supercapacitors with high energy and power density were developed using conducting carbon cloth and CNT-CuNiSe2, designated CC/CNT-CuNiSe2//CC/CNT-CuNiSe2. The hybrid capacitor device has demonstrated a capacitance of 265.586 F/g, alongside an energy density of 82.99 Wh/kg at a power density of 1511.35 W/kg, and the charge and discharge at 4A/g, the hybrid capacitor device delivered an impressive capacitance retention of 101.3% over 6000 continuous cyclings.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"3 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143713360","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}

引用次数: 0