IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr05301j

Guanjun Chen, Yichu Lei, Zheming Huang, Tong Wang, Tingwei Hu, Lan Sun, Yongpeng Qiao

{"title":"Porous carbon-supported PtPdCu alloy heterostructure with three-dimensional spatial network for efficient ethanol eletro-oxidation","authors":"Guanjun Chen, Yichu Lei, Zheming Huang, Tong Wang, Tingwei Hu, Lan Sun, Yongpeng Qiao","doi":"10.1039/d4nr05301j","DOIUrl":"https://doi.org/10.1039/d4nr05301j","url":null,"abstract":"Rationalizing efficient and economical electrocatalysts for ethanol eletro-oxidation (EOR) is crucial for the development of sustainable energy sources. Herein, porous carbon-supported PtPdCu ternary alloy heterostructures (PtxPdyCuz/C, x:y:z = atomic ratio) were constructed using Cu-BTC as precursor. Benefiting from the advantages of three-dimensional spatial network structure, flexible ternary alloy composition and strong metal-support interaction, the as-designed PtxPdyCuz/C catalyst presents impressive EOR performance. Specifically, it achieved an EOR specific activity of 37.89 mA cm-2 in alkaline electrolyte, which is 6 and 11.4 times higher than that of Pt/C (6.3 mA cm-2) and Pd/C (3.32 mA cm-2), respectively. And more than 90% of the initial activity was retained after 1000 consecutive CV cycles. In situ FTIR studies further reveal that the PtxPdyCuz/C catalyst only requires a potential of 0.45 V to oxidize poisonous CO intermediates in EOR. This work provides valuable clues for the rationalization of MOF-derived ternary alloy electrocatalysts for ethanol eletro-oxidation.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"15 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050545","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

Nanoscale High-Entropy Alloys for Solar and Thermal Applications

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr04697h

Xinyang Li, Yalong Zou, Haijiao Lu, Lianzhou Wang

{"title":"Nanoscale High-Entropy Alloys for Solar and Thermal Applications","authors":"Xinyang Li, Yalong Zou, Haijiao Lu, Lianzhou Wang","doi":"10.1039/d4nr04697h","DOIUrl":"https://doi.org/10.1039/d4nr04697h","url":null,"abstract":"High-entropy alloys (HEAs) represent a novel class of materials that challenge traditional alloy design principles by incorporating five or more principal elements in near-equiatomic ratios. This unique composition results in enhanced mechanical properties, thermal stability, and corrosion resistance. Recent research highlights the significant potential of HEAs in catalysis, particularly in solar- and thermo- related applications. Their high configurational entropy not only stabilizes single-phase structures but also facilitates unique electronic and catalytic behaviors. The tunability of HEAs allows for the optimization of their physical and chemical properties, enabling improved reaction rates and selectivity in various catalytic processes. This review provides a thorough overview of HEAs, covering their evolution, synthesis methods, characterization techniques, and computational modeling approaches. We critically assess the fundamental properties and underlying mechanisms driving their exceptional catalytic performance, and explore their current and potential applications in catalysis. By identifying key challenges and promising directions, we aim to guide future research toward unlocking the full potential of HEAs in catalytic systems.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"59 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050547","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

Decreasing the aggregation of photosensitizers to facilitate energy transfer for improved photodynamic therapy

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr04593a

Zhenhua Wang, Jianyang Ao, Xiaoran Lai, Gang Liu, Yun Meng, Yurong Zhang, Jieyun Shi, Yelin Wu, Chaochao Wang

{"title":"Decreasing the aggregation of photosensitizers to facilitate energy transfer for improved photodynamic therapy","authors":"Zhenhua Wang, Jianyang Ao, Xiaoran Lai, Gang Liu, Yun Meng, Yurong Zhang, Jieyun Shi, Yelin Wu, Chaochao Wang","doi":"10.1039/d4nr04593a","DOIUrl":"https://doi.org/10.1039/d4nr04593a","url":null,"abstract":"The mode of energy transfer between photosensitizers and oxygen determines the yield of singlet oxygen (1O2), crucial for photodynamic therapy (PDT). However, the aggregation of photosensitizers promotes electron transfer while inhibiting pure energy transfer, resulting in the generation of the hypotoxic superoxide anion (O2−) and consumption of substantial oxygen. Herein, we achieve the reduction of the aggregation of photosensitizers to inhibit electron transfer through classical chemical crosslinking, thereby boosting the production of 1O2. Specifically, we constructed a cross-linked hydrogel-like nanophotosensitizer (HA-TPP NHs) via amidation reactions between hyaluronic acid (HA) and tetrakis(4-aminophenyl)porphyrin (TATPP). In HA-TPP NHs, porphyrin is anchored at the crosslinking sites, preventing their close proximity. Simultaneously, HA-TPP NHs swell in a physiological environment due to water absorption, further increasing the distance between porphyrin molecules to avoid their aggregation. Compared to porphyrin–hyaluronic acid assembling nanoparticles (HA-TPP NPs), we find that the 1O2 generation efficiency of HA-TPP NHs is elevated by over 80%. Furthermore, leveraging the targeting capabilities of hyaluronic acid, HA-TPP NHs demonstrate a remarkable anticancer effect in in vitro and in vivo experiments. This study offers a novel insight and method for improving the therapeutic efficacy of PDT.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"26 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050544","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

Understanding fatigue and recovery mechanism in Hf0.5Zr0.5O2 capacitors for designing high endurance ferroelectric memory and neuromorphic hardware

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr04861j

Sayani Majumdar, Xinye Li, Padma Srivari, Ella Paasio

{"title":"Understanding fatigue and recovery mechanism in Hf0.5Zr0.5O2 capacitors for designing high endurance ferroelectric memory and neuromorphic hardware","authors":"Sayani Majumdar, Xinye Li, Padma Srivari, Ella Paasio","doi":"10.1039/d4nr04861j","DOIUrl":"https://doi.org/10.1039/d4nr04861j","url":null,"abstract":"Novel non-volatile memories are under intense investigation to revolutionize information processing for ultra energy-efficient implementation of artificial intelligence and machine learning tasks. Ferroelectric memories with ultra-low power and fast operation, non-volatile data retention and reliable switching to multiple polarization states promises one such option for memory and synaptic weight elements in neuromorphic hardware. For quick adaptation by industry, complementary metal oxide semiconductor process compatibility is a key criterion that led to huge attention to hafnia-based FE materials. Designing a high endurance hafnia-based FE is crucially important for online training applications in neuromorphic hardware. In this work, we report on physical origins of fatigue and recovery mechanisms in back-end-of-line compatible ferroelectric Hf0.5Zr0.5O2 thin film capacitors for designing high-endurance memories. We show that Hf0.5Zr0.5O2 devices are capable of recovery from fatigue state with less than 5V pulse sweeps. Such recovery has been conducted multiple times reaching 88% to 93% of 2Pr upon each retrieval. This result indicates that with specifically engineered material stack and annealing protocols, it is possible to reach endurance exceeding 109 cycles at room temperature leading to ultralow power ferroelectric non-volatile memory components or synaptic weight elements compatible with online training tasks for neuromorphic computing.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"20 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050798","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

Structural and electronic transition of layered PtSe2 into non-layered PtSe

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr03203a

Kuanysh Zhussupbekov, Samuel Berman, Maximilian Prechtl, Marc Busch, Ainur Zhussupbekova, Georg S. Duesberg, Valeria Nicolosi, Kostya S. Novoselov, Cormac Ó Coileáin, Igor V. Shvets

引用次数: 0

Magnetic nanoparticle-based hydrogels as reliable platforms to investigate magnetic interactions

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr04286g

Irene Morales, André Koch, Christoph Wesemann, Rebecca T Graf, Nadja C. Bigall

引用次数: 0

Fluorescence nanosensor based on modified sustainable silica for highly sensitive detection of SARS-CoV-2 IgG antibody

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr04546g

Firda Apriyani, Shaimah Rinda Sari, Himawan Tri Bayu Murti Petrus, Marissa Angelina, Robeth Viktoria Manurung, Ni Luh Wulan Septiani, Brian Yuliarto, S. N. Aisyiyah Jenie

{"title":"Fluorescence nanosensor based on modified sustainable silica for highly sensitive detection of SARS-CoV-2 IgG antibody","authors":"Firda Apriyani, Shaimah Rinda Sari, Himawan Tri Bayu Murti Petrus, Marissa Angelina, Robeth Viktoria Manurung, Ni Luh Wulan Septiani, Brian Yuliarto, S. N. Aisyiyah Jenie","doi":"10.1039/d4nr04546g","DOIUrl":"https://doi.org/10.1039/d4nr04546g","url":null,"abstract":"This study presents an innovative fluorescence nanosensor utilizing modified sustainable silica for the ultra-sensitive detection of SARS-CoV-2 IgG antibodies. The sensor employs fluorescent dye-doped silica nanoparticles (FSNP) synthesized via the sol-gel method and functionalized with rhodamine B as a fluorescence dye. Fourier-transform infrared (FTIR) analysis confirmed the successful immobilization of anti-IgG on the FSNP surface, as evidenced by characteristic amide I and II peaks at 1641 cm-1 and 1530 cm-1, respectively. Detection of SARS-CoV-2 IgG antibodies was achieved through enhanced fluorescence intensity of FSNP-anti-IgG at 582 nm. Optimal detection conditions were established with a 15-minute incubation period, demonstrating a linear detection range from 10-8 to 10-2 µg/mL and a limit of detection (LOD) of 5.3 fg/mL. This research highlights the potential of modified sustainable silica-based fluorescence nanosensors, particularly those utilizing FSNP-anti IgG, for advancing sensitive, rapid, and cost-effective COVID-19 diagnostics, making them a viable option for pathogen detection in resource-limited settings","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"24 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050797","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

Layered Ion Dynamics and Enhanced Energy Storage: VS₂/MXene Heterostructure Anodes Revolutionizing Li-Ion Batteries

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr05451b

Mahendriaprabu Ganesan, Jin Yong Lee

{"title":"Layered Ion Dynamics and Enhanced Energy Storage: VS₂/MXene Heterostructure Anodes Revolutionizing Li-Ion Batteries","authors":"Mahendriaprabu Ganesan, Jin Yong Lee","doi":"10.1039/d4nr05451b","DOIUrl":"https://doi.org/10.1039/d4nr05451b","url":null,"abstract":"Two-dimensional (2D) material-based anodes are pivotal for advancing next-generation ion batteries, boasting remarkable ion loading capacity and mobility. In this intricate study, we employed first-principles calculations to delve into the five-layer Lithium ion (Li-ion) loading on transition-metal dichalcogenide (TMD; specifically VS2) paired with MXene (Ti3C2O2 and V3C2O2) heterostructures. Our investigation meticulously assessed adsorption sites, binding energies, and charge transfers. Using sophisticated first-principles calculations, we probed into the Li-ion intercalation process, meticulously determining open-circuit voltages (OCV), which intriguingly ranged from 3.14 to 1.30 V for VS2/Ti3C2O2 and 2.60 to 0.73 V for VS2/V3C2O2. The adsorption energies (Ead) were equally fascinating, with values of −2.86 eV per Li-ion for VS2/Ti3C2O2 and −2.65 eV per Li-ion for VS2/V3C2O2. The optimized VS2/Ti3C2O2 heterostructure demonstrated a staggering Li storage capacity of 425.84 mAhg−1. Not far behind, the VS2/V3C2O2 heterostructure exhibited a notable Li storage capacity of 413.19 mAhg−1, surpassing previously reported 2D anode materials. Following this, ab initio molecular dynamics (AIMD) simulations exposed significant variations within the VS2/Ti3C2O2 and VS2/V3C2O2 heterostructures. These simulations suggest that both the VS2/Ti3C2O2 and VS2/V3C2O2 heterostructures are not only promising but also highly efficient anode materials for the realization of sustainable Li-ion batteries.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"23 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050540","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

Carbon nanofibre frameworks based on a π-extended oligo(perylene) diimide for high-rate lithium-ion batteries

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-28 DOI: 10.1039/d4nr05320f

Ying Feng, Jiaxin Wang, Zehui Yang, Ye Cheng, Binbin Tian, Encai Ou

{"title":"Carbon nanofibre frameworks based on a π-extended oligo(perylene) diimide for high-rate lithium-ion batteries","authors":"Ying Feng, Jiaxin Wang, Zehui Yang, Ye Cheng, Binbin Tian, Encai Ou","doi":"10.1039/d4nr05320f","DOIUrl":"https://doi.org/10.1039/d4nr05320f","url":null,"abstract":"Anodes play an important role in lithium-ion batteries (LIBs) and have received much attention as ideal carbon anode materials for meeting the needs for high-rate capability, long-term stability, and high energy density. In this study, a π-extended oligo(perylene) diimide (PTN) is synthesized by using a solvothermal reaction with NH3·H2O as the decarboxylation reaction catalyst and perylene anhydride as the precursor. A nanocarbon fiber framework can be produced through self-assembly during the carbonization process of π-extended perylene diimide oligomers. The resulting nanocarbon fiber frameworks used as anode materials in LIBs exhibit stable long-term cycling and high-rate capability with a high specific capacity of 670 mA h g−1 at a current of 100 mA g−1 after 270 cycles, 380 mA h g−1 at 1000 mA g−1 after 550 cycles, and 258 mA h g−1 at 2000 mA g−1 after 1000 cycles. The study results indicate that nanocarbon fiber frameworks would be essential for developing promising high-rate electrode materials for lithium-ion batteries.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"35 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050546","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

Corn Silk-derived Biomass Carbon Materials for Low-Frequency Microwave Absorption and Energy Storage

IF 6.7 3区材料科学

Nanoscale Pub Date : 2025-01-27 DOI: 10.1039/d4nr04960h

Juan Shi, Xi Zhang, Hongyu Zhu, Deren Li, Ya Nie, Bo Gao, Gang Xiang

{"title":"Corn Silk-derived Biomass Carbon Materials for Low-Frequency Microwave Absorption and Energy Storage","authors":"Juan Shi, Xi Zhang, Hongyu Zhu, Deren Li, Ya Nie, Bo Gao, Gang Xiang","doi":"10.1039/d4nr04960h","DOIUrl":"https://doi.org/10.1039/d4nr04960h","url":null,"abstract":"Biomass carbon (BC) materials derived from agricultural waste have shown great potential in microwave absorption (MA). However, current research mainly focuses on high-frequency (8-18 GHz) MA, and much less effort has been spent on low-frequency (2-8 GHz) MA and other important functionalities such as energy storage. Herein, corn silk rich in carbon source is utilized to prepare BC materials with uniform pores and large specific surface area through a straightforward chemical activation and carbonization process. Attributed to its optimized impedance matching, interfacial polarization and (N and O) heteroatoms-induced dipole polarization, the optimal sample exhibits superior low-frequency MA capability, including a strong reflection loss (RL) of –75 dB at 6.88 GHz, an effective absorption bandwidth (EAB, RL ≤ −10 dB) down to 2.8 GHz, and excellent radar cross-section reduction. Furthermore, it achieves a high initial discharge specific capacity of 1015.55 mA∙h g−1 and stable cycling performance at 0.5 A g−1 in lithium-ion batteries owing to its heteroatom-rich porous structure with large specific surface area. Our study offers a simple and low-cost way to fabricate high-performance multifunctional BC materials for low-frequency MA and lithium-ion energy storage.","PeriodicalId":92,"journal":{"name":"Nanoscale","volume":"45 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143044780","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

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