Small Methods最新文献_第8页

Unraveling the Atomistic Mechanisms Underlying Effective Reverse Osmosis Filtration by Graphene Oxide Membranes. 揭示石墨烯氧化膜有效反渗透过滤的原子机制

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-06-28 DOI: 10.1002/smtd.202400323

Shan Jiang, Lingli Huang, Honglin Chen, Jiong Zhao, Thuc Hue Ly

{"title":"Unraveling the Atomistic Mechanisms Underlying Effective Reverse Osmosis Filtration by Graphene Oxide Membranes.","authors":"Shan Jiang, Lingli Huang, Honglin Chen, Jiong Zhao, Thuc Hue Ly","doi":"10.1002/smtd.202400323","DOIUrl":"10.1002/smtd.202400323","url":null,"abstract":"The graphene oxide (GO) membrane displays promising potential in efficiently filtering ions from water. However, the precise mechanism behind its effectiveness remains elusive, particularly due to the lack of direct experimental evidence at the atomic scale. To shed light on this matter, state-of-the-art techniques are employed such as integrated differential phase contrast-scanning transmission electron microscopy and electron energy loss spectroscopy, combined with reverse osmosis (RO) filtration experiments using GO membranes. The atomic-scale observations after the RO experiments directly reveal the binding of various ions including Na+, K+, Ca2+, and Fe3+ to the defects, edges, and functional groups of GO. The remarkable ion-sieving capabilities of GO membranes are confirmed, which can be attributed to a synergistic interplay of size exclusion, electrostatic interactions, cation-π, and other non-covalent interactions. Moreover, GO membranes modified by external pressure and cation also demonstrated further enhanced filtration performance for filtration. This study significantly contributes by uncovering the atomic-scale mechanism responsible for ion sieving in GO membranes. These findings not only enhance the fundamental understanding but also hold substantial potential for the advancement of GO membranes in reverse osmosis (RO) filtration.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400323"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11740936/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141464710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Super-Stable Mineralization of Metal Ions from Smelting Wastewater by In Situ Synthesis of NiFe-Based Layered Double Hydroxides for Catalytic Phenol Hydroxylation. 通过原位合成用于催化苯酚羟基化的镍铁合金层状双氢氧化物，从冶炼废水中超稳定地矿化金属离子。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-07-20 DOI: 10.1002/smtd.202400688

Yanling Wang, Yanqi Xu, Cunjun Li, Hai Wang, Linjiang Wang

{"title":"Super-Stable Mineralization of Metal Ions from Smelting Wastewater by In Situ Synthesis of NiFe-Based Layered Double Hydroxides for Catalytic Phenol Hydroxylation.","authors":"Yanling Wang, Yanqi Xu, Cunjun Li, Hai Wang, Linjiang Wang","doi":"10.1002/smtd.202400688","DOIUrl":"10.1002/smtd.202400688","url":null,"abstract":"The super-stable mineralization of metal ions from industrial wastewater by in situ synthesis of layered double hydroxides (LDHs) has been regarded as a sustainable approach from environmental protection and resource utilization perspectives. Herein, the study reports a super-stable mineralization of metal ions including Ni, Fe, Cr, Mn, Cu, Ca, Al, etc. from smelting wastewater by in situ synthesis of NiFe-based LDHs through facile coprecipitation. Such approach exhibits superior mineralization efficiency of metal ions simultaneously that can remove hundreds, thousands, or even tens of thousands mg/L of multiple metal ions to below the values of the Chinese National Emission Standards of Pollutants. Furthermore, the obtained NiFe-based LDHs exhibit excellent catalytic performance of phenol hydroxylation due to the mineralization of multiple metals on the laminates, where 48.24% conversion of phenol and 71.58% selectivity of dihydroxybenzenes are realized under room temperature for 3 h. This work paves a sustainable strategy for hazardous material disposal and resource utilization.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400688"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141730872","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

Carbon Thin-Film Electrodes as High-Performing Substrates for Correlative Single Entity Electrochemistry. 碳薄膜电极作为用于相关单体电化学的高性能基底。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-08-19 DOI: 10.1002/smtd.202400639

Marc Brunet Cabré, Christian Schröder, Filippo Pota, Maida A Costa de Oliveira, Hugo Nolan, Lua Henderson, Laurence Brazel, Dahnan Spurling, Valeria Nicolosi, Pietro Martinuz, Mariangela Longhi, Faidra Amargianou, Peer Bärmann, Tristan Petit, Kim McKelvey, Paula E Colavita

{"title":"Carbon Thin-Film Electrodes as High-Performing Substrates for Correlative Single Entity Electrochemistry.","authors":"Marc Brunet Cabré, Christian Schröder, Filippo Pota, Maida A Costa de Oliveira, Hugo Nolan, Lua Henderson, Laurence Brazel, Dahnan Spurling, Valeria Nicolosi, Pietro Martinuz, Mariangela Longhi, Faidra Amargianou, Peer Bärmann, Tristan Petit, Kim McKelvey, Paula E Colavita","doi":"10.1002/smtd.202400639","DOIUrl":"10.1002/smtd.202400639","url":null,"abstract":"Correlative methods to characterize single entities by electrochemistry and microscopy/spectroscopy are increasingly needed to elucidate structure-function relationships of nanomaterials. However, the technical constraints often differ depending on the characterization techniques to be applied in combination. One of the cornerstones of correlative single-entity electrochemistry (SEE) is the substrate, which needs to achieve a high conductivity, low roughness, and electrochemical inertness. This work shows that graphitized sputtered carbon thin films constitute excellent electrodes for SEE while enabling characterization with scanning probe, optical, electron, and X-ray microscopies. Three different correlative SEE experiments using nanoparticles, nanocubes, and 2D Ti3C2Tx MXene materials are reported to illustrate the potential of using carbon thin film substrates for SEE characterization. The advantages and unique capabilities of SEE correlative strategies are further demonstrated by showing that electrochemically oxidized Ti3C2Tx MXene display changes in chemical bonding and electrolyte ion distribution.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400639"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11740950/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141999093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local Strain-Dependent Etching Patterns of Chemical Vapor Deposited Molybdenum Disulfide. 化学气相沉积二硫化钼的局部应变蚀刻模式。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-10-18 DOI: 10.1002/smtd.202400770

Birong Luo, Rongnan Wang, Tianxiang Zhao, Linfeng Li, Qi Chen, Pengcheng Wang, Junjia Wang, Qing Han, Ying Zhang, Bo Zhang, Dejun Li

{"title":"Local Strain-Dependent Etching Patterns of Chemical Vapor Deposited Molybdenum Disulfide.","authors":"Birong Luo, Rongnan Wang, Tianxiang Zhao, Linfeng Li, Qi Chen, Pengcheng Wang, Junjia Wang, Qing Han, Ying Zhang, Bo Zhang, Dejun Li","doi":"10.1002/smtd.202400770","DOIUrl":"10.1002/smtd.202400770","url":null,"abstract":"This study reveals a local strain-dependent etching behavior that enables the formation of distinguished etching patterns in differently strained chemical vapor deposited (CVD) 2D molybdenum disulfide (MoS2) monolayers. It is demonstrated that when the local tensile strain of CVD 2D MoS2 is as uniformly low as ɛ ≈ 0.33% or less, the oxidative etching pattern possesses conventional triangular etching pits (TEPs), while when the local tensile strain is as uniformly high as ɛ ≈ 0.55% or larger, the oxidative etching pattern consist of uniformly oriented hexagonal etching channels (HECs). More interestingly, when the CVD 2D MoS2 monolayer has heterogenous strain distribution from ɛ ≈ 0.55% (center region) to ɛ ≈ 0.33% (perimeter region), the oxidative etching pattern comprise of non-uniformly hexagonal-mixed-parallel etching channels (HPECs). The further characterization and analysis reveal the formation mechanism of such strain-dependent etching patterns is built on the local strain-related fractures propagation under oxidative etching, as well as the anisotropy fractures-based oxidative etching kinetics. This study may enhance the understanding of the relationship between etching and growth features of 2D TMDs, and paves the way to etching-nanostructured (or defect) engineering of 2D TMDs and other 2D materials for potential applications in electrocatalysis and optoelectronics.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400770"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142454391","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

XPS Binding Energy Shifts in 2D Ti₃C₂T_z MXene go largely Beyond Intuitive Explanations: Rationalization from DFT Simulations and Experiments. 二维 Ti3C2Tz MXene 中的 XPS 结合能转变在很大程度上超越了直观解释：DFT 模拟和实验的合理性。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-10-09 DOI: 10.1002/smtd.202400848

Florian Brette, Stéphane Célérier, Christine Canaff, Lola Loupias, Michael Paris, Aurélien Habrioux, Florent Boucher, Vincent Mauchamp

{"title":"XPS Binding Energy Shifts in 2D Ti3C2Tz MXene go largely Beyond Intuitive Explanations: Rationalization from DFT Simulations and Experiments.","authors":"Florian Brette, Stéphane Célérier, Christine Canaff, Lola Loupias, Michael Paris, Aurélien Habrioux, Florent Boucher, Vincent Mauchamp","doi":"10.1002/smtd.202400848","DOIUrl":"10.1002/smtd.202400848","url":null,"abstract":"MXenes are prototypes of surface tunable 2D materials with vast potential for properties tuning. Accurately characterizing their surface functionalization and its role in electronic structure is crucial, X-ray photoelectron spectroscopy (XPS) being among the go-to methods to do so. Despite extensive use, XPS analysis remains however intricate. Focusing on the benchmark MXene Ti3C2Tz, Density Functional Theory (DFT) calculations of core-level binding energy shifts (BE.s.) are combined with experiments in order to provide a quantitative interpretation of XPS spectra. This approach demonstrates that BE.s. are driven by the complex interplay between chemical, structural, and subtle electronic structure effects preventing analysis from intuitive arguments or comparison with reference materials. In particular, it is shown that O terminations induce the largest BE.s. at Ti 2p levels despite lower electronegativity than F. Additionally, F 1s levels show weak sensitivity to the F local environment, explaining the single contribution in the spectrum, whereas O 1s states are significantly affected by the local surface chemistry. Finally, clear indicators of surface group vacancies are given at Ti 2p and O 1s levels. These results demonstrate the combination of calculations with experiments as a method of the highest value for MXenes XPS spectra analysis, providing guidelines for otherwise complex interpretations.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400848"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142386820","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

Rational Design of NIR-II Ratiometric Fluorescence Probes for Accurate Bioimaging and Biosensing In Vivo. 用于体内精确生物成像和生物传感的近红外-II 比率荧光探针的合理设计。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-03-12 DOI: 10.1002/smtd.202400132

Tuanwei Li, Yejun Zhang, Feng Wu, Guangcun Chen, Chunyan Li, Qiangbin Wang

{"title":"Rational Design of NIR-II Ratiometric Fluorescence Probes for Accurate Bioimaging and Biosensing In Vivo.","authors":"Tuanwei Li, Yejun Zhang, Feng Wu, Guangcun Chen, Chunyan Li, Qiangbin Wang","doi":"10.1002/smtd.202400132","DOIUrl":"10.1002/smtd.202400132","url":null,"abstract":"Intravital fluorescence imaging in the second near-infrared window (NIR-II, 900-1700 nm) has emerged as a promising method for non-invasive diagnostics in complex biological systems due to its advantages of less background interference, high tissue penetration depth, high imaging contrast, and sensitivity. However, traditional NIR-II fluorescence imaging, which is characterized by the \"always on\" or \"turn on\" mode, lacks the ability of quantitative detection, leading to low reproducibility and reliability during bio-detection. In contrast, NIR-II ratiometric fluorescence imaging can realize quantitative and reliable analysis and detection in vivo by providing reference signals for fluorescence correction, generating new opportunities and prospects during in vivo bioimaging and biosensing. In this review, the current design strategies and sensing mechanisms of NIR-II ratiometric fluorescence probes for bioimaging and biosensing applications are systematically summarized. Further, current challenges, future perspectives and opportunities for designing NIR-II ratiometric fluorescence probes are also discussed. It is hoped that this review can provide effective guidance for the design of NIR-II ratiometric fluorescence probes and promote its adoption in reliable biological imaging and sensing in vivo.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400132"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140100644","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

AI-Equipped Scanning Probe Microscopy for Autonomous Site-Specific Atomic-Level Characterization at Room Temperature. 配备人工智能的扫描探针显微镜可在室温下自主进行特定位点的原子级表征。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-09-06 DOI: 10.1002/smtd.202400813

Zhuo Diao, Keiichi Ueda, Linfeng Hou, Fengxuan Li, Hayato Yamashita, Masayuki Abe

{"title":"AI-Equipped Scanning Probe Microscopy for Autonomous Site-Specific Atomic-Level Characterization at Room Temperature.","authors":"Zhuo Diao, Keiichi Ueda, Linfeng Hou, Fengxuan Li, Hayato Yamashita, Masayuki Abe","doi":"10.1002/smtd.202400813","DOIUrl":"10.1002/smtd.202400813","url":null,"abstract":"An advanced scanning probe microscopy system enhanced with artificial intelligence (AI-SPM) designed for self-driving atomic-scale measurements is presented. This system expertly identifies and manipulates atomic positions with high precision, autonomously performing tasks such as spectroscopic data acquisition and atomic adjustment. An outstanding feature of AI-SPM is its ability to detect and adapt to surface defects, targeting or avoiding them as necessary. It is also designed to overcome typical challenges such as positional drift and tip apex atomic variations due to the thermal effects, ensuring accurate, site-specific surface analysis. The tests under the demanding conditions of room temperature have demonstrated the robustness of the system, successfully navigating thermal drift and tip fluctuations. During these tests on the Si(111)-(7 × 7) surface, AI-SPM autonomously identified defect-free regions and performed a large number of current-voltage spectroscopy measurements at different adatom sites, while autonomously compensating for thermal drift and monitoring probe health. These experiments produce extensive data sets that are critical for reliable materials characterization and demonstrate the potential of AI-SPM to significantly improve data acquisition. The integration of AI into SPM technologies represents a step toward more effective, precise and reliable atomic-level surface analysis, revolutionizing materials characterization methods.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400813"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11740938/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142138848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing Ultraviolet Stability and Performance of Wide Bandgap Perovskite Solar Cells Through Ultraviolet Light-Absorbing Passivator. 通过紫外线吸收钝化剂提高宽带隙 Perovskite 太阳能电池的紫外线稳定性和性能。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-03-19 DOI: 10.1002/smtd.202301793

Yao Dai, Xin Ge, Biao Shi, Pengyang Wang, Ying Zhao, Xiaodan Zhang

引用次数: 0

Selective Laser Doping and Dedoping for Phase Engineering in Vanadium Dioxide Film. 选择性激光掺杂与脱掺杂在二氧化钒薄膜相工程中的应用。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-11-28 DOI: 10.1002/smtd.202400832

He Ma, Yuan Li, Jianhua Hao, Yonghuang Wu, Run Shi, Ruixuan Peng, Linbo Shan, Yimao Cai, Kechao Tang, Kai Liu, Xinping Zhang

引用次数: 0

Versatile Organometallic Synthesis of 0D/2D Metal@Germanane Nanoarchitectonics for Electrochemical Energy Conversion Applications. 用于电化学能量转换应用的 0D/2D 金属@锗烷纳米结构的多功能有机金属合成。

IF 10.7 2区材料科学

Small Methods Pub Date : 2025-01-01 Epub Date: 2024-11-12 DOI: 10.1002/smtd.202400854

Yiming Lei, Xavier Sala, Jordi García-Antón, Jose Muñoz

{"title":"Versatile Organometallic Synthesis of 0D/2D Metal@Germanane Nanoarchitectonics for Electrochemical Energy Conversion Applications.","authors":"Yiming Lei, Xavier Sala, Jordi García-Antón, Jose Muñoz","doi":"10.1002/smtd.202400854","DOIUrl":"10.1002/smtd.202400854","url":null,"abstract":"Hydrogen-terminated 2D-Germanane (2D-GeH), a germanium-based 2D material akin to graphene, is receiving enormous attention owing to its predicted optoelectronic characteristics. However, experimental research of 2D-GeH is still in an early stage, and therefore its real implementation for task-specific applications will depend on the correct development of suitable chemical functionalization methods. Herein, a general and straightforward organometallic (OM) approach is provided for the robust functionalization of 2D-GeH with different 0D noble metal nanoparticles (M-NPs), resulting in 0D/2D M@GeH nanoarchitectonics. As a proof-of-principle, 0D/2D Pt@GeH and Au@GeH nanoarchitectonics have been successfully synthesized, characterized, and explored as unconventional electrocatalysts for boosting energy conversion reactions. While the hydrogen evolution reaction activity was evaluated for Pt@GeH, the oxygen reduction reaction was interrogated for Au@GeH. Interestingly, the implanted catalytic features of M-NPs yielded to 0D/2D M@GeH nanoarchitectonics with enhanced energy conversion activity comparing to pristine 2D-GeH counterpart. This work proves the suitability of 2D-GeH as unconventional substrates to stabilize nobleM-NPs, and the versatility of the OM approach for the custom design of a new family of 0D/2D M@GeH nanoarchitectonics to expand the implementation of monoelemental 2D materials as promising electrocatalysts in energy conversion field and beyond.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":"e2400854"},"PeriodicalIF":10.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11740960/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142613247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0