Nano Research最新文献_第6页

Stabilizing lithium deposition within bimodal porous SiO2-TiO2 microspheres as 3D host structure 在作为三维宿主结构的双峰多孔二氧化硅-二氧化钛微球中稳定锂沉积

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-29 DOI: 10.1007/s12274-024-6934-5

Noeul Kim, Jae Hun Choi, Min Kim, Dae Soo Jung, Yun Chan Kang

{"title":"Stabilizing lithium deposition within bimodal porous SiO2-TiO2 microspheres as 3D host structure","authors":"Noeul Kim, Jae Hun Choi, Min Kim, Dae Soo Jung, Yun Chan Kang","doi":"10.1007/s12274-024-6934-5","DOIUrl":"https://doi.org/10.1007/s12274-024-6934-5","url":null,"abstract":"<p>Three-dimensional (3D) host materials for lithium metal anodes (LMAs) have gained attention because they can mitigate volume expansion and local current density through their large surface area and suppress the dendritic growth of lithium. Recent research on 3D host materials has focused on conductive materials; however, the benefits of 3D host materials cannot be fully utilized because lithium deposition begins at the top of the structure. Herein, we fabricate SiO<sub>2</sub>-TiO<sub>2</sub> composite microspheres with bimodal pore structures (bi-SiTiO) by simple spray pyrolysis. These microspheres effectively store lithium within the structure from the bottom of the electrode while preventing lithium dendrite formation. Focused ion beam-scanning transmission electron microscopy (FIB-STEM) analysis reveals that the lithiophilic properties of composite microspheres enhanced their effectiveness in storing lithium, with small pores acting as “lithium-ion sieves” for a uniform lithium-ion flux and large pores that provide sufficient volume for lithium deposition. The bi-SiTiO composite microspheres exhibit a high Coulombic efficiency of 98.5% over 200 cycles at 2.0 mA·cm<sup>−2</sup> when operated in a lithium half-cell. With a high lithium loading of 5.0 mAh·cm<sup>−2</sup>, the symmetrical cell of the bi-SiTiO electrode sustains more than 900 h. A full cell coupled with an LiNi<sub>0.8</sub>Co<sub>0.1</sub>Mn<sub>0.1</sub>O<sub>2</sub> (NCM811) cathode also exhibits enhanced electrochemical properties in terms of cycling stability and rate capability.\u0000</p>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"39 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218456","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}

引用次数: 0

Construction of ternary Sn/SnO2/nitrogen-doped carbon superstructures as anodes for advanced lithium-ion batteries 构建作为先进锂离子电池阳极的三元锡/二氧化锰/掺氮碳上层结构

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-28 DOI: 10.1007/s12274-024-6931-8

Zizhou Shen, Xiaotian Guo, Hongye Ding, Dianheng Yu, Yihao Chen, Nana Li, Huijie Zhou, Songtao Zhang, Jun Wu, Huan Pang

{"title":"Construction of ternary Sn/SnO2/nitrogen-doped carbon superstructures as anodes for advanced lithium-ion batteries","authors":"Zizhou Shen, Xiaotian Guo, Hongye Ding, Dianheng Yu, Yihao Chen, Nana Li, Huijie Zhou, Songtao Zhang, Jun Wu, Huan Pang","doi":"10.1007/s12274-024-6931-8","DOIUrl":"10.1007/s12274-024-6931-8","url":null,"abstract":"<div><p>Pristine tin (Sn) and tin dioxide (SnO<sub>2</sub>) have sparked wide interest owing to their abundant resources and superior theoretical capacity. Nevertheless, the obvious volume expansion effect upon cycling and undesirable conductivity of Sn-based materials lead to undesirable specific capacity. In this work, a nanostructured Sn/SnO<sub>2</sub>/nitrogen-doped carbon (NC) superstructure was prepared through a facile electrospray-carbonization strategy. The Sn/SnO<sub>2</sub> nanoparticles (NPs) were uniformly dispersed in a spherical NC matrix, which prevented the volume expansion and aggregation of NPs and facilitated the ion diffusion and charge transfer kinetics. When the optimized Sn/SnO<sub>2</sub>/NC superstructures were employed as lithium-ion battery anodes, a remarkable specific capacity of 747.9 mAh·g<sup>−1</sup> over 200 cycles at 0.5 A·g<sup>−1</sup> and a superior cyclability of 644.1 mAh·g<sup>−1</sup> over 1000 cycles at 2 A·g<sup>−1</sup> were obtained. This effective synthetic strategy for synthesizing superstructures provides valuable insights for the advancement of lithium-ion batteries.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 11","pages":"9721 - 9727"},"PeriodicalIF":9.5,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218461","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}

引用次数: 0

Unipolar p-type monolayer WSe2 field-effect transistors with high current density and low contact resistance enabled by van der Waals contacts 利用范德华接触实现高电流密度和低接触电阻的单极 p 型单层 WSe2 场效应晶体管

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-27 DOI: 10.1007/s12274-024-6942-5

Miaomiao Li, Xinyu Zhang, Zimei Zhang, Gang Peng, Zhihong Zhu, Jia Li, Shiqiao Qin, Mengjian Zhu

{"title":"Unipolar p-type monolayer WSe2 field-effect transistors with high current density and low contact resistance enabled by van der Waals contacts","authors":"Miaomiao Li, Xinyu Zhang, Zimei Zhang, Gang Peng, Zhihong Zhu, Jia Li, Shiqiao Qin, Mengjian Zhu","doi":"10.1007/s12274-024-6942-5","DOIUrl":"https://doi.org/10.1007/s12274-024-6942-5","url":null,"abstract":"<p>High-performance field-effect transistors (FETs) based on atomically thin two-dimensional (2D) semiconductors have demonstrated great promise in post-Moore integrated circuits. However, unipolar p-type 2D semiconductor transistors yet remain challenging and suffer from low saturation current density (less than 10 µA·µm<sup>−1</sup>) and high contact resistance (larger than 100 kΩ·µm), mainly limited by the Schottky barrier induced by the mismatch of the work-functions and the Fermi level pinning at the metal contact interfaces. Here, we overcome these two obstacles through van der Waals (vdW) integration of high work-function metal palladium (Pd) as the contacts onto monolayer WSe<sub>2</sub> grown by chemical vapor deposition (CVD) method. We demonstrate unipolar p-type monolayer WSe<sub>2</sub> FETs with superior device performance: room temperature on-state current density exceeding 100 µA·µm<sup>−1</sup>, contact resistance of 12 kΩ·µm, on/off ratio over 10<sup>7</sup>, and field-effect hole mobility of ~ 103 cm<sup>2</sup>·V<sup>−1</sup>·s<sup>−1</sup>. Electrical transport measurements reveal that the Fermi level pinning effect is completely effectively eliminated in monolayer WSe<sub>2</sub> with vdW Pd contacts, leading to a Schottky barrier-free Ohmic contact at the metal-semiconductor junctions. Combining the advantages of large-scale vdW contact strategy and CVD growth, our results pave the way for wafer-scale fabrication of complementary-metal-oxide-semiconductor (CMOS) logic circuits based on atomically thin 2D semiconductors.\u0000</p>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"15 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227359","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}

引用次数: 0

Integrated in-memory sensor and computing of artificial vision system based on reversible bonding transition-induced nitrogen-doped carbon quantum dots (N-CQDs) 基于可逆键合转变诱导的氮掺杂碳量子点（N-CQDs）的人工视觉系统的集成式内存传感器和计算器

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-27 DOI: 10.1007/s12274-024-6966-x

Tianqi Yu, Jie Li, Wei Lei, Suhaidi Shafe, Mohd Nazim Mohtar, Nattha Jindapetch, Paphavee van Dommelen, Zhiwei Zhao

{"title":"Integrated in-memory sensor and computing of artificial vision system based on reversible bonding transition-induced nitrogen-doped carbon quantum dots (N-CQDs)","authors":"Tianqi Yu, Jie Li, Wei Lei, Suhaidi Shafe, Mohd Nazim Mohtar, Nattha Jindapetch, Paphavee van Dommelen, Zhiwei Zhao","doi":"10.1007/s12274-024-6966-x","DOIUrl":"https://doi.org/10.1007/s12274-024-6966-x","url":null,"abstract":"<p>Carbon quantum dots (CQDs) have been used in memristors due to their attractive optical and electronic properties, which are considered candidates for brain-inspired computing devices. In this work, the performance of CQDs-based memristors is improved by utilizing nitrogen-doping. In contrast, nitrogen-doped CQDs (N-CQDs)-based optoelectronic memristors can be driven with smaller programming voltages (−0.6 to 0.7 V) and exhibit lower powers (78 nW/0.29 µW). The physical mechanism can be attributed to the reversible transition between C–N and C=N with lower binding energy induced by the electric field and the generation of photogenerated carriers by ultraviolet light irradiation, which adjusts the conductivity of the initial N-CQDs to implement resistance switching. Importantly, the convolutional image processing based on various cross kernels is efficiently demonstrated by stable multi-level storage properties. An N-CQDs-based optoelectronic reservoir computing implements impressively high accuracy in both no noise and various noise modes when recognizing the Modified National Institute of Standards and Technology (MNIST) dataset. It illustrates that N-CQDs-based memristors provide a novel strategy for developing artificial vision system with integrated in-memory sensor and computing.\u0000</p>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"28 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218478","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}

引用次数: 0

Effect of heat and bubble mass transfer on the efficiency of alkaline electrolysis hydrogen production 热量和气泡传质对碱性电解制氢效率的影响

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-27 DOI: 10.1007/s12274-024-6922-9

Nian Xu, Bingbing Qiu, Zucun Rui, Tianxiang Ji, Zilong Liu, Huaqiang Chu

{"title":"Effect of heat and bubble mass transfer on the efficiency of alkaline electrolysis hydrogen production","authors":"Nian Xu, Bingbing Qiu, Zucun Rui, Tianxiang Ji, Zilong Liu, Huaqiang Chu","doi":"10.1007/s12274-024-6922-9","DOIUrl":"10.1007/s12274-024-6922-9","url":null,"abstract":"<div><p>This review highlights the critical effects of heat transfer and bubble mass transfer in alkaline water electrolysis on hydrogen generation efficiency. To improve heat transfer performance, the study focuses on reducing electrical resistance and controlling the electrolysis system’s temperature. It proposes innovative strategies such as using metal matrix composites and catalysts to optimize electrode structure, precise temperature and pressure regulation and enhanced electrolyte concentration. Additionally, the study examines the dynamics of bubble mass transfer, proposing effective strategies to reduce bubble coverage, including hydrophilic electrodes, mechanically circulating the electrolyte and voltage smoothing with pressure swinging. This study contributes to the advancement of hydrogen energy technology with practical strategies. By adjusting the electrolysis system to optimize the combined effect of these factors, we can improve the efficiency, economy and environmental friendliness of hydrogen production. This will contribute to the transformation of the global energy mix and the implementation of sustainable development strategies.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 11","pages":"9345 - 9370"},"PeriodicalIF":9.5,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218459","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}

引用次数: 0

Interfacial activation of alkaline phosphatase induced by hydrophilic metal—organic frameworks 亲水性金属有机框架诱导碱性磷酸酶的界面活化

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-27 DOI: 10.1007/s12274-024-6929-2

Dongyan Chen, Yi Xu, Jie Wei, Munetaka Oyama, Quansheng Chen, Xiaomei Chen

{"title":"Interfacial activation of alkaline phosphatase induced by hydrophilic metal—organic frameworks","authors":"Dongyan Chen, Yi Xu, Jie Wei, Munetaka Oyama, Quansheng Chen, Xiaomei Chen","doi":"10.1007/s12274-024-6929-2","DOIUrl":"https://doi.org/10.1007/s12274-024-6929-2","url":null,"abstract":"<p>Encapsulating natural enzymes in metal—organic frameworks (MOFs) can maintain the original biological functions of enzymes in harsh environments. However, the nature of interfacial interactions between a MOF and enzyme is currently unclear, rendering effective regulation of the biocatalytic activity of the enzyme@MOF composite difficult. Differences in the hydrophilicity of MOF carriers are closely related to the conformational changes and catalytic properties of the enzyme. In this study, the catalytic activity, stability, and conformational changes of alkaline phosphatase (ALP) encapsulated in hydrophilic zeolite imidazolate framework-90 (ZIF-90) and hydrophobic ZIF-8 were systematically investigated using experimental methods and molecular dynamics simulations. The results demonstrated that hydrophilic ZIF-90-encapsulated ALP exhibited superior stability and was 2.22-fold more retained catalytically active than hydrophobic ALP@ZIF-8 after 20 cycles of utilization. Moreover, the hydrophilic interface provided by ZIF-90 effectively regulated the structure of ALP to maintain the optimal catalytic conformation of its active center. The practical application of highly bioactive ALP@ZIF-90 was demonstrated by employing it in a self-calibrated colorimetric/fluorescence dual-mode sensing method for the efficient, reliable, and accurate detection of methyl paraoxon. This study provides new insights for improving enzyme immobilization strategies and promoting the rapid development of enzyme@MOF composites for catalytic and sensing applications.\u0000</p>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"13 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218463","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}

引用次数: 0

Drawing highly ordered MXene fibers from dynamically aggregated hydrogels 从动态聚合的水凝胶中提取高度有序的 MXene 纤维

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-27 DOI: 10.1007/s12274-024-6930-9

Shengyang Zhou, Xuan Li, Yilin Zhang, Joseph Halim, Chao Xu, Johanna Rosen, Maria Strømme

{"title":"Drawing highly ordered MXene fibers from dynamically aggregated hydrogels","authors":"Shengyang Zhou, Xuan Li, Yilin Zhang, Joseph Halim, Chao Xu, Johanna Rosen, Maria Strømme","doi":"10.1007/s12274-024-6930-9","DOIUrl":"10.1007/s12274-024-6930-9","url":null,"abstract":"<div><p>Assembly of two-dimensional (2D) nanomaterials into well-organized architectures is pivotal for controlling their function and enhancing performance. As a promising class of 2D nanomaterials, MXenes have attracted significant interest for use in wearable electronics due to their unique electrical and mechanical properties. However, facile approaches for fabricating MXenes into macroscopic fibers with controllable structures are limited. In this study, we present a strategy for easily spinning MXene fibers by incorporating polyanions. The introduction of poly(acrylic acid) (PAA) into MXene colloids has been found to alter MXene aggregation behavior, resulting in a reduced concentration threshold for lyotropic liquid crystal phase. This modification also enhances the viscosity and shear sensitivity of MXene colloids. Consequently, we were able to draw continuous fibers directly from the gel of MXene aggregated with PAA. These fibers exhibit homogeneous diameter and high alignment of MXene nanosheets, attributed to the shear-induced long-range order of the liquid crystal phase. Furthermore, we demonstrate proof-of-concept applications of the ordered MXene fibers, including textile-based supercapacitor, sensor and electrical thermal management, highlighting their great potential applied in wearable electronics. This work provides a guideline for processing 2D materials into controllable hierarchical structures by regulating aggregation behavior through the addition of ionic polymers.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 11","pages":"9815 - 9821"},"PeriodicalIF":9.5,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218476","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}

引用次数: 0

Development of aqueous-phase CdSeS magic-size clusters at room temperature and quantum dots at elevated temperatures 在室温下开发水相硒化镉神奇尺寸团簇，在高温下开发量子点

IF 9.9 2区材料科学

Nano Research Pub Date : 2024-08-24 DOI: 10.1007/s12274-024-6884-y

Yao Jiang, Zhe Wang, Shasha Wang, Chunchun Zhang, Chaoran Luan, Xiaoqin Chen, Kui Yu

{"title":"Development of aqueous-phase CdSeS magic-size clusters at room temperature and quantum dots at elevated temperatures","authors":"Yao Jiang, Zhe Wang, Shasha Wang, Chunchun Zhang, Chaoran Luan, Xiaoqin Chen, Kui Yu","doi":"10.1007/s12274-024-6884-y","DOIUrl":"https://doi.org/10.1007/s12274-024-6884-y","url":null,"abstract":"<p>Little is known about the synthesis of colloidal ternary semiconductor magic-size clusters (MSCs) and quantum dots (QDs) in an aqueous environment. We report here the first synthesis of aqueous-phase CdSeS MSC-380 (displaying sharp optical absorption peaking at ∼ 380 nm) at room temperature and QDs at elevated temperatures. The reaction contains CdCl<sub>2</sub>·2.5H<sub>2</sub>O, 3-mercaptopropionic acid (MPA, HS–(CH<sub>2</sub>)<sub>2</sub>–COOH), selenourea (SeU, NH<sub>2</sub>–C(Se)–NH<sub>2</sub>), and thioacetamide (TAA, CH<sub>3</sub>–C(S)–NH<sub>2</sub>). Prior to the nucleation and growth (N/G) of QDs, there are clusters formed at 25 °C. The prenucleation-stage clusters are the precursor compound of CdSeS MSC-380 (PC-380). The PC is relatively transparent in optical absorption; in the presence of a primary amine butylamine (BTA, CH<sub>3</sub>–(CH<sub>2</sub>)<sub>3</sub>–NH<sub>2</sub>), the PC transforms to absorbing CdSeS MSC-380. At 80 °C, the PC decreases and the N/G of CdSeS QDs appears. The present study paves the way to the aqueous-phase synthesis of ternary CdSeS MSCs and QDs, providing an in-depth understanding of the cluster formation in the prenucleation stage of CdSeS QDs.\u0000</p>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"41 1","pages":""},"PeriodicalIF":9.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218477","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}

引用次数: 0

Protein-nucleic acid hybrid nanostructures for molecular diagnostic applications 用于分子诊断的蛋白质-核酸杂交纳米结构

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-24 DOI: 10.1007/s12274-024-6925-6

Noah R. Sundah, Yuxuan Seah, Auginia Natalia, Xiaoyan Chen, Panida Cen, Yu Liu, Huilin Shao

{"title":"Protein-nucleic acid hybrid nanostructures for molecular diagnostic applications","authors":"Noah R. Sundah, Yuxuan Seah, Auginia Natalia, Xiaoyan Chen, Panida Cen, Yu Liu, Huilin Shao","doi":"10.1007/s12274-024-6925-6","DOIUrl":"10.1007/s12274-024-6925-6","url":null,"abstract":"<div><p>Molecular diagnostic technologies empower new clinical opportunities in precision medicine. However, existing approaches face limitations with respect to performance, operation and cost. Biological molecules including proteins and nucleic acids are being increasingly adopted as tools in the development of new molecular diagnostic technologies. In particular, leveraging their complementary properties—the functional diversity of proteins and the precision programmability of nucleic acids—a wide range of protein-nucleic acid hybrid nanostructures have been developed. These hybrid structures take diverse forms, ranging from one-dimensional to three-dimensional hybrids, as static assemblies to dynamic machines, and possess myriad functions to recognize target biomarkers, encode vast information and execute catalytic activities. Motivated by recent advances in this area of molecular nanotechnology, we review the state-of-art design and application of various types of protein-nucleic acid hybrid nanostructures for molecular diagnostics, and present an outlook on the challenges and opportunities for emerging pre-clinical and clinical applications, highlighting the promise for earlier detection, more refined diagnosis and highly tailored treatment decision that ultimately lead to improved patient outcomes.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 10","pages":"9003 - 9014"},"PeriodicalIF":9.5,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218474","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}

引用次数: 0

Synthesis of palladium-rare earth alloy as a high-performance bifunctional catalyst for direct ethanol fuel cells 合成用于直接乙醇燃料电池的高性能双功能钯稀土合金催化剂

IF 9.5 2区材料科学

Nano Research Pub Date : 2024-08-24 DOI: 10.1007/s12274-024-6933-6

Qingqing Li, Chang Sun, Xiaolei Sun, Zijun Yin, Yaping Du, Jin-Cheng Liu, Feng Luo

{"title":"Synthesis of palladium-rare earth alloy as a high-performance bifunctional catalyst for direct ethanol fuel cells","authors":"Qingqing Li, Chang Sun, Xiaolei Sun, Zijun Yin, Yaping Du, Jin-Cheng Liu, Feng Luo","doi":"10.1007/s12274-024-6933-6","DOIUrl":"10.1007/s12274-024-6933-6","url":null,"abstract":"<div><p>Direct ethanol fuel cells (DEFCs) have drawn attention for their simplicity, rapid start-up, high power density and environmental friendliness. Despite these advantages, the widespread application of DEFCs faces challenges, primarily due to the inadequate performance of anode and cathode catalysts. Pd-based materials have shown exceptional catalytic activity for both the ethanol oxidation reaction (EOR) and the oxygen reduction reaction (ORR). Alloying noble metals with rare earth elements has emerged as an effective strategy to further enhance the catalytic activity by modulating the electronic structure. In this study, we synthesized a series of palladium-rare earth (Pd<sub>3</sub>RE) alloys supported on carbon to serve as bifunctional catalysts that efficiently promote both ORR and EOR. Compared to Pd/C, the Pd<sub>3</sub>Tb/C catalyst exhibits 3.1-fold and 1.8-fold enhancement in activity for ORR and EOR, respectively. The charge transfer in the Pd<sub>3</sub>Tb/C results in an electron-rich Pd component, thereby weakening the binding energy with oxygen species and facilitating the two reactions.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":713,"journal":{"name":"Nano Research","volume":"17 11","pages":"9525 - 9531"},"PeriodicalIF":9.5,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227330","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}

引用次数: 0