IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202506875

Jiajie Xu,Tenghui Jin,Wei Qu,Kaizhou Huang,Zhiyu Liu,Ping Zhang,Jiaping Paul Chen

{"title":"Enhancement of Persulfate Activation via Dual-Site Coordination and Electron Redistribution at Co─O─Zr Metal-Support Interfaces for Photo-Fenton-Like Reactions.","authors":"Jiajie Xu,Tenghui Jin,Wei Qu,Kaizhou Huang,Zhiyu Liu,Ping Zhang,Jiaping Paul Chen","doi":"10.1002/smll.202506875","DOIUrl":"https://doi.org/10.1002/smll.202506875","url":null,"abstract":"Development of high-performance photocatalysts for persulfate activation is often limited by rapid electron-hole recombination and insufficient quantum efficiency. To overcome the challenges, electronic metal-support interaction (EMSI) structure is designed. The innovative structure has several key benefits: recombination rates are significantly reduced, charge separation is enhanced, and content of active sites and intrinsic catalytic activity are increased. ZrO2/Co3O4 bimetallic oxides featuring a synergistic Co─O─Zr EMSI coordination are synthesized via a sol-gel method. Strong EMSI effects markedly modulate and stabilize the Co 3d electronic structure, creating an electron-rich center on Co sites to promote persulfate activation, and an electron-deficient center on Zr sites to adsorb atrazine. The Gibbs free energy analysis reveals that Zr incorporation reduces the overpotential of oxygen evolution reaction, thereby facilitating electron transfer, promoting hole consumption and suppressing charge recombination. More importantly, it promotes the generation of reactive oxygen species-predominantly via a singlet oxygen (1O2)-dominated non-radical mechanism. The optimized catalyst achieves 97.3% degradation of atrazine (a model compound) under visible light, outperforming commercial catalysts (e.g., 4.5-fold of Co3O4). The work elucidates the cooperative mechanism of dual-site engineering and EMSI-mediated electron redistribution, providing a rational strategy for designing efficient photocatalysts toward sustainable advanced oxidation processes.","PeriodicalId":228,"journal":{"name":"Small","volume":"24 1","pages":"e06875"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229143","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

Dimensional Engineering-Driven V/O Defect Modulation for Ultrahigh-Energy-Density Aqueous Zinc-Ion Batteries. 尺寸工程驱动的超高能量密度锌离子水电池V/O缺陷调制。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202509759

Zhihao Deng,Wu Shao,Jie Sheng,Shucheng Huang,Jingwen He,Siyi Li,Nuo Shi,Yanyan Shi,Yang Li,Lixin Zhang,Wenjun Wu

{"title":"Dimensional Engineering-Driven V/O Defect Modulation for Ultrahigh-Energy-Density Aqueous Zinc-Ion Batteries.","authors":"Zhihao Deng,Wu Shao,Jie Sheng,Shucheng Huang,Jingwen He,Siyi Li,Nuo Shi,Yanyan Shi,Yang Li,Lixin Zhang,Wenjun Wu","doi":"10.1002/smll.202509759","DOIUrl":"https://doi.org/10.1002/smll.202509759","url":null,"abstract":"Achieving high energy density in aqueous zinc-ion batteries (AZIBs) while simultaneously optimizing Zn2+ migration kinetics and redox activity remains a formidable challenge. Herein, a novel in situ strategy is developed using glutamic acid as a structural regulator during hydrothermal synthesis, enabling a dimensional transformation of ammonium vanadate and inducing a high density of V/O defects. This engineered structure, featuring abundant V/O defects and interlayer water, facilitates a significant increase in V4+ content, thereby enhancing redox kinetics and reaction reversibility. As a cathode material for AZIBs, the resulting defect-rich ammonium vanadate (denoted as V/O-NHVO) delivers a high specific capacity of 567.9 mAh g-1 at 0.1 A g-1, an energy density of 433 Wh kg-1, and a peak power density of 3575 W kg-1, along with excellent cycling stability-retaining 87.9% of its capacity over 2000 cycles. Moreover, the material exhibits promising performance in aqueous magnesium-ion batteries, demonstrating remarkable versatility. This work offers a compelling design paradigm for in situ structure and defect engineering toward high-performance cathode materials for aqueous multivalent-ion batteries.","PeriodicalId":228,"journal":{"name":"Small","volume":"20 1","pages":"e09759"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229152","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

Metal-Ion-Activity Magnetic Nanoprobes for MRI Sensing of Cu2+ Levels in Tumor Malignancy. 金属离子活性磁性纳米探针用于MRI检测恶性肿瘤中的Cu2+水平。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202507307

Yuehao Gan,Qiyue Wang,Hui Du,Yuqi Wang,Dao Shi,Longfei Pan,Daishun Ling,Fangyuan Li

{"title":"Metal-Ion-Activity Magnetic Nanoprobes for MRI Sensing of Cu2+ Levels in Tumor Malignancy.","authors":"Yuehao Gan,Qiyue Wang,Hui Du,Yuqi Wang,Dao Shi,Longfei Pan,Daishun Ling,Fangyuan Li","doi":"10.1002/smll.202507307","DOIUrl":"https://doi.org/10.1002/smll.202507307","url":null,"abstract":"Metal ions are essential for enzymatic regulation, redox balance, and signal transduction, with dysregulation increasingly implicated in cancer, neurodegeneration, and inflammation. Copper ions (Cu2+), in particular, are closely associated with tumor progression and malignancy. However, conventional binding-based magnetic resonance imaging (MRI) probes lack the sensitivity to detect trace metal ion fluctuations in vivo. Here, a metal-ion-activity magnetic (MIAM) nanoprobe is reported that integrates activity-based chemical sensing with magnetic resonance energy transfer for signal amplification. MIAM nanoprobe consists of superparamagnetic iron oxide nanoparticles (SPIONs) linked to gadoteric acid (Gd-DOTA) via a Cu2+-cleavable adipic acid dihydrazide moiety. The T1-MRI signal is initially quenched as SPIONs suppress Gd-DOTA's relaxivity. Upon exposure to elevated Cu2+, Cu2+-catalyzed reaction breaks the covalent bond in the MIAM nanoprobe and then releases free Gd-DOTA, resulting in an activated T1-MRI signal. The catalytic nature of this reaction enables multiple turnover events, thereby facilitating signal amplification and enabling sensitive detection of Cu2⁺ levels down to ≈10 µm in vitro, facilitating the identification of tumor malignancy and the evaluation of therapeutic response to Cu2+ chelators. By converting metal ion activity into quantifiable MRI contrast, the MIAM nanoprobe offers a noninvasive platform for diagnosing and tracking various metal-ion-associated diseases.","PeriodicalId":228,"journal":{"name":"Small","volume":"6 1","pages":"e07307"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229191","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

Bottom-Up Synthesis of 2D AlN Nanosheets with Superior Hydrolytic Resistance and Thermal Conductivity. 自底向上合成具有优异抗水解性和导热性的二维AlN纳米片。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202507445

Wonyeong Lee,Gyuchan Kim,Byung-Hyun Kim,Haekyun Park,Sung-Joon Park,Chang-Min Yoon,Myeongjin Kim

{"title":"Bottom-Up Synthesis of 2D AlN Nanosheets with Superior Hydrolytic Resistance and Thermal Conductivity.","authors":"Wonyeong Lee,Gyuchan Kim,Byung-Hyun Kim,Haekyun Park,Sung-Joon Park,Chang-Min Yoon,Myeongjin Kim","doi":"10.1002/smll.202507445","DOIUrl":"https://doi.org/10.1002/smll.202507445","url":null,"abstract":"Advanced electronics require efficient thermal management materials, yet aluminum nitride (AlN) faces critical limitations despite its outstanding thermal conductivity (320 W m-1 K-1). Conventional spherical AlN suffers from moisture-induced degradation producing hazardous ammonia gas and requires excessive loading fractions for thermal network formation. Herein, an innovative synthesis strategy producing 2D AlN nanosheets is developed through graphene oxide-templated chemical deposition followed by carbothermal nitridation. The synthesized 2D AlN features ultrathin architecture (1-2 nm thickness) with remarkable aspect ratios approaching 50. Epoxy composites containing 2D AlN achieve superior thermal performance (5.35 W m-1 K-1 at 60 vol.%) compared to spherical AlN systems (3.80 W m-1 K-1), attributed to enhanced percolation behavior at lower concentrations. Density functional theory calculations reveal quantum size effects elevate nitrogen 2p electronic states, increasing kinetic barriers against hydrolytic attack mechanisms. Under accelerated aging conditions (85 °C, 85% humidity), 2D AlN composites maintain thermal properties with negligible degradation over 200 h. This morphological engineering approach unlocks new possibilities for robust thermal interface applications in demanding electronic environments.","PeriodicalId":228,"journal":{"name":"Small","volume":"18 1","pages":"e07445"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229124","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

In situ Electrochemical-Triggered Dopamine Enzymatic Polymerization for Self-Revealing and Self-Erasing Information Storage. 原位电化学触发多巴胺酶聚合用于自我揭示和自我擦除信息存储。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202507359

Mengyi Liu,Yuting Li,Feng Hu,Ruizhe Rao,Xiaoyang Li,Yuhuan Qiu,Xiaowen Shi

{"title":"In situ Electrochemical-Triggered Dopamine Enzymatic Polymerization for Self-Revealing and Self-Erasing Information Storage.","authors":"Mengyi Liu,Yuting Li,Feng Hu,Ruizhe Rao,Xiaoyang Li,Yuhuan Qiu,Xiaowen Shi","doi":"10.1002/smll.202507359","DOIUrl":"https://doi.org/10.1002/smll.202507359","url":null,"abstract":"Hydrogels are emerging as revolutionary information storage media due to their unprecedented responsive and reprogrammable properties. To address the challenge of dynamic information storage without the necessity for external stimuli, electrical writing techniques are adopted for creating dopamine-modified chitosan pattern hydrogel with both self-revealing and self-erasing capabilities, which is realized by modulation the oxidation rate of dopamine spatiotemporally. Specifically, the in situ electrochemical reaction on the surface of electrode initiates the cascade enzymatic canalization of dopamine confining the fast reaction within the writing area, which leads to quick information self-revealing. However, the subsequent air oxidation of dopamine in the unwritten area generally results in self-erasing information. This work pioneers the use of electrical methods to produce hydrogen peroxide on hydrogels, enabling rapid oxidation of dopamine and effective information storage within the hydrogel, which opens new avenues for patterned hydrogels with information storage capabilities.","PeriodicalId":228,"journal":{"name":"Small","volume":"115 1","pages":"e07359"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229146","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

Simultaneously Nanoconfining Mg and Loading Multiple Metal Single Atoms Catalysts with N-Doped Carbon to Achieve Room-Temperature Dehydrogenation. 同时纳米约束Mg和负载n掺杂碳的多金属单原子催化剂实现室温脱氢。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202508519

Xiaofei Xing,Mingxing Wei,Boyuan Cao,Zhao Zhang,Tong Liu

{"title":"Simultaneously Nanoconfining Mg and Loading Multiple Metal Single Atoms Catalysts with N-Doped Carbon to Achieve Room-Temperature Dehydrogenation.","authors":"Xiaofei Xing,Mingxing Wei,Boyuan Cao,Zhao Zhang,Tong Liu","doi":"10.1002/smll.202508519","DOIUrl":"https://doi.org/10.1002/smll.202508519","url":null,"abstract":"Nanoconfinement and single-atom catalysis are effective strategies for improving the hydrogen storage performance of Mg. However, achieving high loading nanoconfinement Mg and introducing multiple metal single atoms catalysts simultaneously is extremely challenging. This work developed a novel metal cation doping - thermal decomposition strategy to successfully prepare Mg-SAs@C nanocomposites with multiple metal single atoms (SAs) embedded in a MOF-derived-nitrogen-doped carbon scaffold. The Mg-(NiCoFeTi-SAs)@C nanocomposite has fine Mg nanoparticles of 7.4 nm and a high loading rate of 72.4%. Surprisingly, Mg-(NiCoFeTi-SAs)@C begins to dehydrogenate at room-temperature with a saturation capacity of 5.3 wt.%. In particular, the hydrogen release kinetics and thermodynamic performance are significantly improved (Ea(des) = 48.5 kJ mol-1 H2, ΔHdes = 59.6 kJ mol-1 H2). Attributed to the synergistic effect between multiple single atoms and N, as well as the carbon scaffold, the electron transfer efficiency is increased, resulting in a significantly higher charge transfer amount for Mg-(NiCoFeTi-SAs)@C (1.88 eV) compared to Mg-(Ni-SAs)@C (0.06 eV) with only one single-atom added. This work has opened a new path for introducing multiple single-atom catalysts into Mg-based materials, and also provided new insights into exploring the catalytic mechanism of multiple metal single-atom catalysts.","PeriodicalId":228,"journal":{"name":"Small","volume":"31 1","pages":"e08519"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229151","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

Stomata-Inspired Intelligent High-Performance Hydrogel With on-Demand Gateable Electromagnetic-Interference Shielding. 受气孔启发的智能高性能水凝胶，可按需屏蔽电磁干扰。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202510156

Junwei Wang,Zhen Xiang,Yongqi Yin,Zichen Lu,Qiang Ren,Bin Yuan,Wei Lu

{"title":"Stomata-Inspired Intelligent High-Performance Hydrogel With on-Demand Gateable Electromagnetic-Interference Shielding.","authors":"Junwei Wang,Zhen Xiang,Yongqi Yin,Zichen Lu,Qiang Ren,Bin Yuan,Wei Lu","doi":"10.1002/smll.202510156","DOIUrl":"https://doi.org/10.1002/smll.202510156","url":null,"abstract":"The development of intelligently adaptive electromagnetic interference (EMI) shielding materials remains constrained by the inherent trade-offs among dynamic tunability, mechanical robustness, and multifunctional integration. Inspired by stomatal regulation in plant guard cells, it has engineered an intelligent poly(N-isopropylacrylamide) (PNIPAM)/MXene-silver nanowires (AgNWs) (PMA) hydrogel whose biomimetic kinematics transcend trade-offs. This novel design deliberately emulated biological principles of osmotic-like actuation via PNIPAM phase transition, dynamic microchannel reconfiguration using a zinc oxide (ZnO) template, and ion-flux-inspired electron pathways through MXene-AgNWs networks interfaced with a zinc ion (Zn²⁺) electrolyte. Such structural ingenuity enables the simultaneous, on-demand tuning of electrical conductivity, hierarchical microarchitectures, and multifunctional properties. The resulting hydrogel exhibited a remarkable dynamic EMI shielding modulation of 61.1 dB, actuated solely through hydration-governed percolation. Crucially, the divergent stimulus responses imparted an intrinsic versatility that global electrothermal shrinkage to emulate stomatal closure for EMI shielding tunability, while localized photothermal bending reproduced guard-cell kinematics for soft actuators. Simultaneously, Zn2+-riveted cross-links endowed the hydrogel with exceptional mechanical toughness of 360.6 kJ m-3, while a wrinkle-nanobridge architecture integrated high-precision sensing, retaining a gauge factor (GF) of 2.11 across a 394% deformation window. Demonstrated in wireless communication toggling and muscle-movement monitoring, this biomimetic strategy establishes a paradigm for intelligent hydrogels, offering transformative potential for smart wearables and human-machine interfaces.","PeriodicalId":228,"journal":{"name":"Small","volume":"27 1","pages":"e10156"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229153","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

Partial Encapsulation of Cu2O with Silica for Improved Electroreduction of Carbon Dioxide to C2 Species. 二氧化硅部分包封Cu2O改善二氧化碳电还原至C2态。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202509694

Furong Qiao,Qinghua Liu,Haonan Chen,Zhiwei Yang,Lu Jiang,Xinya Chen,Miao Ji,Yaning Liu,Xiao Huang,Gang Lu

{"title":"Partial Encapsulation of Cu2O with Silica for Improved Electroreduction of Carbon Dioxide to C2 Species.","authors":"Furong Qiao,Qinghua Liu,Haonan Chen,Zhiwei Yang,Lu Jiang,Xinya Chen,Miao Ji,Yaning Liu,Xiao Huang,Gang Lu","doi":"10.1002/smll.202509694","DOIUrl":"https://doi.org/10.1002/smll.202509694","url":null,"abstract":"Electroreduction of carbon dioxide (CO2ER) has emerged as a promising strategy for converting greenhouse gas carbon dioxide into value-added carbon-based products under mild conditions. Among the diverse products, the C2 compounds, including ethylene and ethanol, are particularly attractive due to their high commercial value and widespread industrial applications. Therefore, it is highly promising to improve the Faradaic efficiency (FE) of C2 products during CO2ER. Herein, cuprous oxide (Cu2O) particles are partially encapsulated with silica (SiO2) for significant improvement in FE of C2 products during CO2ER. Compared with pristine Cu2O and SiO2-fully encapsulated Cu2O, the SiO2-partially encapsulated Cu2O demonstrates an improved FE of C2 products to ≈70.9 ± 3.1% in an H-type cell. This unique improvement in FE of C2 can be attributed to the accumulated *CO intermediates and well modulated C-C coupling on a partially SiO2-encapsulated Cu-based catalyst. The optimized surface coverage of SiO2 can not only modulate the electronic structure of Cu for an improved CO2ER (including C-C coupling) but also expose enough continuous Cu surface for the coupling of two C-containing intermediates. Therefore, the production of C2 species can be significantly promoted. This work offers a valuable insight into the designing and development of highly selective CO2ER catalysts toward C2 species.","PeriodicalId":228,"journal":{"name":"Small","volume":"17 1","pages":"e09694"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229142","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

A Flexible Bioresorbable Implantable Sensor for Wireless Dynamic Monitoring of H2O2 Enabled by Pt-Decorated MoO3- x Nanozyme. 基于pt修饰的MoO3- x纳米酶的柔性生物可吸收可植入传感器无线动态监测H2O2。

IF 13.3 2区材料科学

Small Pub Date : 2025-10-06 DOI: 10.1002/smll.202508861

Huasheng Bi,Zhaopeng Wang,Hongwei Sheng,Mingxuan Shang,Jinkun Hu,Chenhui Guo,Daicao Wan,Fengfeng Li,Qing Yue,Qing Su,Zhenhua Li,Kairong Wang,Wei Lan

{"title":"A Flexible Bioresorbable Implantable Sensor for Wireless Dynamic Monitoring of H2O2 Enabled by Pt-Decorated MoO3- x Nanozyme.","authors":"Huasheng Bi,Zhaopeng Wang,Hongwei Sheng,Mingxuan Shang,Jinkun Hu,Chenhui Guo,Daicao Wan,Fengfeng Li,Qing Yue,Qing Su,Zhenhua Li,Kairong Wang,Wei Lan","doi":"10.1002/smll.202508861","DOIUrl":"https://doi.org/10.1002/smll.202508861","url":null,"abstract":"Accurate spatiotemporal tracking of in vivo hydrogen peroxide (H2O2) flux is pivotal for deciphering pathological mechanisms and guiding precision therapeutics of various diseases. While traditional assays offer accuracy and selectivity, they rely on complex sample handling or are built with rigid and permanent materials, leading to limited temporal resolution and/or requiring secondary surgical retrieval of the implants. Herein, a wireless sensing system based on the flexible and bioresorbable electrochemical sensor is reported for continuous dynamic monitoring of H2O2 in vivo. The Pt-decorated MoO3- x nanozyme enables a high-performance H2O2 sensor with a low detection limit (0.26 µm), sustained catalytic stability (80 h), and robust anti-interference characteristics. Density functional theory calculations reveal the catalytic enhancement mechanism of H2O2 decomposition kinetics by the synergistic effect between oxygen vacancies and Pt. The detection capability of the system is demonstrated by monitoring H2O2 levels in vivo during inflammation and intervention. After completing the mission, the sensor can be fully bioresorbed in the body, avoiding secondary surgical removal. This breakthrough technology establishes a personalized paradigm for redox monitoring in precision medicine.","PeriodicalId":228,"journal":{"name":"Small","volume":"8 1","pages":"e08861"},"PeriodicalIF":13.3,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145229148","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

Liquid-Liquid Interface -Driven Reconstruction of CuAg Nanocomposites for Selective CO2 to C2H4 Electroreduction 液-液界面驱动的CuAg纳米复合材料选择性CO2 - C2H4电还原重建

IF 13.3 2区材料科学

Small Pub Date : 2025-10-03 DOI: 10.1002/smll.202508803

Ji-Long Sang, Shi-Duo Zhang, Qing Liu, Ramadan A. Geioushy, Tahany Mahmoud, Yi Zhang, Min Liu

{"title":"Liquid-Liquid Interface -Driven Reconstruction of CuAg Nanocomposites for Selective CO2 to C2H4 Electroreduction","authors":"Ji-Long Sang, Shi-Duo Zhang, Qing Liu, Ramadan A. Geioushy, Tahany Mahmoud, Yi Zhang, Min Liu","doi":"10.1002/smll.202508803","DOIUrl":"https://doi.org/10.1002/smll.202508803","url":null,"abstract":"The electrochemical CO2 reduction reaction (CO2RR) to multicarbon products such as C2H4 is critical for sustainable energy conversion but remains a significant challenge. Cu-based nanocatalysts can facilitate C─C coupling for C2+ product generation, yet their catalytic efficiency and selectivity require further improvement. In this study, a liquid-liquid interface etching strategy is employed, using Cu nanocubes as templates and aqueous AgNO3 as the etchant to synthesize well-defined CuAg nanocomposites. Among these, the optimized Cu67Ag33 composite nanocubes achieved a ethylene (C2H4) Faraday efficiency (FE) of 43.90% and a partial current density of 21.50 mA cm−2at −1.50 VRHE. This work demonstrates a versatile approach to integrate secondary metal active sites via directional confined etching, while reconstructing catalytic interfaces to enhance C─C coupling and C2H4 selectivity. These findings provide a strategic framework for the rational design of efficient CO2RR catalysts, advancing the development of sustainable carbon conversion technologies.","PeriodicalId":228,"journal":{"name":"Small","volume":"37 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216238","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

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