IF 13.3 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202503534

Gwan Hyeon Park, Sandya Rani Mangishetti, Won‐Gwang Lim, Junhyuk Ji, Yun Ho Jeong, Jeongbin Cho, Hansol Bae, Changshin Jo, Won Bae Kim

{"title":"Triphasic Interface Engineering with Metallic Sn/N, B Co‐Doped Carbon Matrix for Boosting Reaction Kinetics and Cycling Stability in Lithium–Sulfur Batteries","authors":"Gwan Hyeon Park, Sandya Rani Mangishetti, Won‐Gwang Lim, Junhyuk Ji, Yun Ho Jeong, Jeongbin Cho, Hansol Bae, Changshin Jo, Won Bae Kim","doi":"10.1002/smll.202503534","DOIUrl":"https://doi.org/10.1002/smll.202503534","url":null,"abstract":"Lithium–sulfur batteries undergo solid–liquid–solid phase transitions based on a dissolution–deposition reaction mechanism. To effectively suppress the shuttling of soluble polysulfides, catalysts should be incorporated into the cathode to enhance both the adsorption and conversion processes. The formation of a triphasic interface among the catalyst, conductive material, and electrolyte plays a key role in facilitating these reactions. In this study, a composite catalyst (Sn@NBGNs‐CNTs), consisting of metallic tin microparticles anchored on nitrogen and boron co‐doped graphene nanosheets and partially exfoliated carbon nanotubes, is synthesized as a sulfur host via a simple method. This structure effectively anchors polysulfides at the interface and provided abundant active sites to accelerate redox reaction kinetihcs. As a result, it facilitated charge transfer and polysulfide transport at the interface, leading to an increase in the nucleation–growth rate constants of Li2S as determined using the critical deposition voltage from the potentiostatic intermittent titration technique. Consequently, the electrode exhibits excellent cycling stability, retaining 93% of its initial capacity after 350 cycles at 1 C with an extremely low‐capacity decay rate of 0.003% per cycle.","PeriodicalId":228,"journal":{"name":"Small","volume":"46 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503700","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 Dual‐Mode On‐Chip 3D‐Printed Nanoengineered Platform for Extraction and Electrochemical Detection of Enrofloxacin 双模芯片上3D打印纳米工程平台提取和电化学检测恩诺沙星

IF 13.3 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202502880

Supratim Mahapatra, Ankur Singh, Ratul Paul, Pranjal Chandra

{"title":"A Dual‐Mode On‐Chip 3D‐Printed Nanoengineered Platform for Extraction and Electrochemical Detection of Enrofloxacin","authors":"Supratim Mahapatra, Ankur Singh, Ratul Paul, Pranjal Chandra","doi":"10.1002/smll.202502880","DOIUrl":"https://doi.org/10.1002/smll.202502880","url":null,"abstract":"A magnetic molecularly imprinted polymer (MMIP) is synthesized for the development of a highly selective and sensitive electrochemical sensing platform targeting enrofloxacin (ENF). The micro‐sized mesoporous core‐shell MMIP structure is constructed with a magnetite core and an outer shell functionalized using 3‐aminopropyltriethoxysilane (APTES) as the monomer. The synthesis is optimized and validated using a range of physical and electrochemical techniques. The sensor is designed with dual‐mode functionality, integrating magnetic separation for efficient target extraction and electrochemical detection for precise quantification. A conventional electrode is modulated with multi‐layer nano‐functionalization to improve its analytical performance, while 3D‐printed components ensure miniaturization, fabrication precision, and scalability. The resulting device exhibits a broad linear detection range from 100 pM to 10 mM (10−10 to 10−2 M), with an exceptionally low limit of detection (LOD) of 161 fM (1.61 × 10−13 M). As ENF is recurrently administered to cattle, milk is used as a real sample to demonstrate the sensor's proof‐of‐application. Real sample analysis showed a high recovery rate (90.23% to 97.29%) with minimal matrix interference, confirming reliability in complex biological matrices. The platform demonstrates exceptional reproducibility and stability, offering a robust and scalable solution for environmental and food safety monitoring.","PeriodicalId":228,"journal":{"name":"Small","volume":"248 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503465","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

Recyclable Solid‐solid Phase Change Polymer‐based Composites With High Latent Heat and Ultrahigh Thermal Conductivity via Dynamic Internal‐catalyzed Esterification and Vertically Oriented Conductive Pathway 通过动态内催化酯化和垂直定向传导途径，具有高潜热和超高导热的可回收固固相变聚合物基复合材料

IF 13.3 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202501959

Rong Zhang, Yunfang Li, Baokuan Zhou, Chenxi Liu, Yuefeng Zhang, Chuzeyuan Xiao, Qingting Liu, Xudong Fu, Shengfei Hu, Tao Hu, Ching Ping Wong

{"title":"Recyclable Solid‐solid Phase Change Polymer‐based Composites With High Latent Heat and Ultrahigh Thermal Conductivity via Dynamic Internal‐catalyzed Esterification and Vertically Oriented Conductive Pathway","authors":"Rong Zhang, Yunfang Li, Baokuan Zhou, Chenxi Liu, Yuefeng Zhang, Chuzeyuan Xiao, Qingting Liu, Xudong Fu, Shengfei Hu, Tao Hu, Ching Ping Wong","doi":"10.1002/smll.202501959","DOIUrl":"https://doi.org/10.1002/smll.202501959","url":null,"abstract":"At present, the internal design of electronic devices tends to be integrated and miniaturized, and there is an urgent demand for composites with both high latent heat and high thermal conductivity (TC) to realize rapid heat dissipation. Herein, a simple and efficient strategy is proposed to fabricate solid‐solid phase change materials (SSPCMs) based on thermally conductive composites with high latent heat, ultrahigh TC, and reprocessability. The SSPCMs (MP) are synthesized by internal‐catalyzed esterification between styrene‐maleic anhydride copolymer (SMA) and polyethylene glycol (PEG), and then the composites (MP‐OCF) are obtained by filling the reaction in vertically oriented carbon fiber arrays (OCF). The resulting MP attains a phase transition enthalpy of 151.1 J g−1, in which transesterification occurs internally at 120 °C for reprocessability. The composite MP1‐2‐OCF possesses an ultrahigh TC of 128.12 W m−1 K−1 and high phase transition enthalpy of 116.3 J g−1 within 28.62 vol% CFs, which can be reprocessed at 120 °C and restored to its original state and property. Furthermore, the composites MP‐OCF have a good application in heat dissipation and solar energy storage. This work provides a facile method for the preparation of thermally conductive composites that can be widely applied in thermal management.","PeriodicalId":228,"journal":{"name":"Small","volume":"643 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503702","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

An Artificial Peroxynitrite‐Resistant Superoxide Dismutase for Acute Kidney Injury Alleviation 缓解急性肾损伤的人工抗过氧亚硝酸盐超氧化物歧化酶

IF 13.3 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202503033

Fengxian Zhang, Ping Gao, Min Qi, Junjie Hu, Xiuxun Wu, Cao Li, Zechao Zhuang, Zhenpeng Qiu, Ziqiang Xu

{"title":"An Artificial Peroxynitrite‐Resistant Superoxide Dismutase for Acute Kidney Injury Alleviation","authors":"Fengxian Zhang, Ping Gao, Min Qi, Junjie Hu, Xiuxun Wu, Cao Li, Zechao Zhuang, Zhenpeng Qiu, Ziqiang Xu","doi":"10.1002/smll.202503033","DOIUrl":"https://doi.org/10.1002/smll.202503033","url":null,"abstract":"Manganese superoxide dismutase (Mn‐SOD) is the most common natural antioxidant enzyme that defends cells against oxidative stress. However, it is intrinsically vulnerable to nitration by peroxynitrite (ONOO−) to result in accumulation of reactive oxygen species and inducement of acute kidney injury (AKI). Designing Mn‐SOD mimics that are both active and resistant to ONOO− is essential for advancing artificial enzymes and broadening the application of enzymatic catalytic therapies. Herein, an artificial manganese‐based single‐atom nanozymes (Mn‐O5/CN SAzyme) featuring square‐pyramidal Mn‐O5 active sites and abundant hydroxyl groups is presented. Mn‐O5/CN SAzyme demonstrates excellent biocompatibility, superior SOD‐like activity, and tolerance to ONOO−, positioning it as a promising artificial enzyme mimics for alleviating AKI. Theoretical calculations suggest that the square‐pyramidal Mn‐O5 coordination in Mn‐O5/CN SAzyme enhances its SOD‐like activity and ONOO− resistance. Mn‐O5/CN SAzyme has high antioxidant efficacy toward HK‐2 cells. It significantly reduces renal oxidative stress and inflammation in AKI mice, without any side effects. Mechanistically, Mn‐O5/CN SAzyme alleviates AKI by suppressing the pro‐inflammatory cytokine cascade driven by the NOD‐like receptor protein 3 (NLRP3)/caspase‐1/gasdermin D pathway. This study highlights the crucial role of the Mn‐O5 coordination structure in enhancing SOD‐like activity and ONOO− resistance, presenting a novel strategy for treating inflammatory diseases.","PeriodicalId":228,"journal":{"name":"Small","volume":"102 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500740","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 (111) Facet‐Dominated Carbon Dots‐Perovskite Composite Crystal Matrix for Highly Stable Photodetector A（111）面控碳点钙钛矿复合晶体基质用于高稳定光电探测器

IF 13.3 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202501181

Ying Li, Jun Xing, Rongxue Zhou, Yixuan Li, Ziyuan Huang, Zhicheng Zhu, Hang Zang, Zhenhuang Su, Xiaojuan Sun, Bai Yang, Weili Yu, Dabing Li

{"title":"A (111) Facet‐Dominated Carbon Dots‐Perovskite Composite Crystal Matrix for Highly Stable Photodetector","authors":"Ying Li, Jun Xing, Rongxue Zhou, Yixuan Li, Ziyuan Huang, Zhicheng Zhu, Hang Zang, Zhenhuang Su, Xiaojuan Sun, Bai Yang, Weili Yu, Dabing Li","doi":"10.1002/smll.202501181","DOIUrl":"https://doi.org/10.1002/smll.202501181","url":null,"abstract":"Crystal facet orientation plays a key role in dominating the optoelectronic conversion and stability of perovskite devices. To date, in‐depth understanding on how to control the orientation of crystal facet and its’ effect on the optoelectronic properties of perovskites remains a significant challenge. Here, a strategy for manipulating the facet orientation of methylammonium lead bromide (MAPbBr3) perovskite single crystals utilizing carbon dots (CDs) is proposed, which can expose the (111) facet by reducing the surface energy of specific crystal facets selectively and improve the optoelectronic properties by CDs incorporation simultaneously. Experimental and theoretical studies indicate that the CDs are prefer to adsorb on the (111) facet and the (111) facet‐dominated CDs‐perovskite composite crystal matrixes exhibit significantly improved optoelectronic properties compared to perovskite crystal dominated by the (100) facet Consequently, the (111) facet‐dominated perovskite photodetector demonstrates exceptional performance, with a responsivity as high as 249.09 A W−1 and a detectivity of 1.19 × 1014 Jones. More significantly, the unencapsulated photodetector shows remarkable stability, maintaining a record 93% of its initial performance over 90 d. This work provides a novel way to enhance the performance of halide perovskites photodetectors by crystal facet orientation modulation strategy, especially the stability.","PeriodicalId":228,"journal":{"name":"Small","volume":"2 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500741","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

Triphasic Interface Engineering with Metallic Sn/N, B Co-Doped Carbon Matrix for Boosting Reaction Kinetics and Cycling Stability in Lithium-Sulfur Batteries. 金属Sn/N， B共掺杂碳基体三相界面工程提高锂硫电池反应动力学和循环稳定性。

IF 13 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202503534

Gwan Hyeon Park, Sandya Rani Mangishetti, Won-Gwang Lim, Junhyuk Ji, Yun Ho Jeong, Jeongbin Cho, Hansol Bae, Changshin Jo, Won Bae Kim

{"title":"Triphasic Interface Engineering with Metallic Sn/N, B Co-Doped Carbon Matrix for Boosting Reaction Kinetics and Cycling Stability in Lithium-Sulfur Batteries.","authors":"Gwan Hyeon Park, Sandya Rani Mangishetti, Won-Gwang Lim, Junhyuk Ji, Yun Ho Jeong, Jeongbin Cho, Hansol Bae, Changshin Jo, Won Bae Kim","doi":"10.1002/smll.202503534","DOIUrl":"https://doi.org/10.1002/smll.202503534","url":null,"abstract":"Lithium-sulfur batteries undergo solid-liquid-solid phase transitions based on a dissolution-deposition reaction mechanism. To effectively suppress the shuttling of soluble polysulfides, catalysts should be incorporated into the cathode to enhance both the adsorption and conversion processes. The formation of a triphasic interface among the catalyst, conductive material, and electrolyte plays a key role in facilitating these reactions. In this study, a composite catalyst (Sn@NBGNs-CNTs), consisting of metallic tin microparticles anchored on nitrogen and boron co-doped graphene nanosheets and partially exfoliated carbon nanotubes, is synthesized as a sulfur host via a simple method. This structure effectively anchors polysulfides at the interface and provided abundant active sites to accelerate redox reaction kinetihcs. As a result, it facilitated charge transfer and polysulfide transport at the interface, leading to an increase in the nucleation-growth rate constants of Li2S as determined using the critical deposition voltage from the potentiostatic intermittent titration technique. Consequently, the electrode exhibits excellent cycling stability, retaining 93% of its initial capacity after 350 cycles at 1 C with an extremely low-capacity decay rate of 0.003% per cycle.","PeriodicalId":228,"journal":{"name":"Small","volume":" ","pages":"e2503534"},"PeriodicalIF":13.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144504328","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 Dual-Mode On-Chip 3D-Printed Nanoengineered Platform for Extraction and Electrochemical Detection of Enrofloxacin. 双模片上3d打印纳米工程平台提取和电化学检测恩诺沙星。

IF 13 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202502880

Supratim Mahapatra, Ankur Singh, Ratul Paul, Pranjal Chandra

{"title":"A Dual-Mode On-Chip 3D-Printed Nanoengineered Platform for Extraction and Electrochemical Detection of Enrofloxacin.","authors":"Supratim Mahapatra, Ankur Singh, Ratul Paul, Pranjal Chandra","doi":"10.1002/smll.202502880","DOIUrl":"https://doi.org/10.1002/smll.202502880","url":null,"abstract":"A magnetic molecularly imprinted polymer (MMIP) is synthesized for the development of a highly selective and sensitive electrochemical sensing platform targeting enrofloxacin (ENF). The micro-sized mesoporous core-shell MMIP structure is constructed with a magnetite core and an outer shell functionalized using 3-aminopropyltriethoxysilane (APTES) as the monomer. The synthesis is optimized and validated using a range of physical and electrochemical techniques. The sensor is designed with dual-mode functionality, integrating magnetic separation for efficient target extraction and electrochemical detection for precise quantification. A conventional electrode is modulated with multi-layer nano-functionalization to improve its analytical performance, while 3D-printed components ensure miniaturization, fabrication precision, and scalability. The resulting device exhibits a broad linear detection range from 100 pM to 10 mM (10-10 to 10-2 M), with an exceptionally low limit of detection (LOD) of 161 fM (1.61 × 10-13 M). As ENF is recurrently administered to cattle, milk is used as a real sample to demonstrate the sensor's proof-of-application. Real sample analysis showed a high recovery rate (90.23% to 97.29%) with minimal matrix interference, confirming reliability in complex biological matrices. The platform demonstrates exceptional reproducibility and stability, offering a robust and scalable solution for environmental and food safety monitoring.","PeriodicalId":228,"journal":{"name":"Small","volume":" ","pages":"e2502880"},"PeriodicalIF":13.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144504323","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

Selective Capture of Scandium Ions by Designing Chelation Sites in Covalent Organic Framework Membranes 设计共价有机框架膜中螯合位点对钪离子的选择性捕获

IF 13.3 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202502514

Weiliang Jin, Hongxin Jiang, Xuemei Liu, Shenghua Ma, Lina Zhu, Deming Kong

{"title":"Selective Capture of Scandium Ions by Designing Chelation Sites in Covalent Organic Framework Membranes","authors":"Weiliang Jin, Hongxin Jiang, Xuemei Liu, Shenghua Ma, Lina Zhu, Deming Kong","doi":"10.1002/smll.202502514","DOIUrl":"https://doi.org/10.1002/smll.202502514","url":null,"abstract":"The rational design of adsorbents capable of efficiently and selectively capturing target metal ions from complex matrices remains a significant challenge in the field of materials science. Herein, it is demonstrated that atomic‐level design of chelation sites within covalent organic frameworks (COFs) is a feasible strategy for achieving selective metal ion capture. This study presents a comprehensive approach that integrates theoretical predictions, structural design, and experimental validation to develop targeted metal ion‐specific absorbents. The synthesized β‐ketoenamine‐linked COFs, with tailored chelation sites, exhibit exceptional selectivity and enhanced adsorption capacities for scandium ions (Sc3+), an important rare metal, and selective separation of Sc3+ from complex multi‐metal ion solutions are realized using Janus membranes prepared from these tailored COFs. Mechanistic analysis reveals the critical roles of chelation coordination and electrostatic interactions in the selective adsorption process. This work represents a significant methodological advancement in utilizing chelating coordination for the structural design of COFs targeting metal ion capture, addressing the specific challenge of Sc3+ recovery and providing valuable insights into the development of selective adsorbents for other critical metal ions. These findings are promising for solving longstanding issues in resource recovery and environmental remediation.","PeriodicalId":228,"journal":{"name":"Small","volume":"1 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503701","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

Strategic Core‐Shell Integration for Advancing Z‐Scheme Heterojunctions: Interface‐Engineered ZnIn2S4/Ag2WO4@Ag Ternary Architecture for Enhanced Visible‐Light‐Driven Photocatalytic H2 Production and Pollutant Degradation 推进Z - Scheme异质结的战略性核壳集成：界面工程ZnIn2S4/Ag2WO4@Ag三元结构，用于增强可见光驱动的光催化H2生产和污染物降解

IF 13.3 2区材料科学

Small Pub Date : 2025-06-27 DOI: 10.1002/smll.202501833

Bharagav Urupalli, Dong‐Seog Kim, Gi‐Seung Shin, Geun‐Jae Oh, Tuong Van Tran, Ji‐Wook Yoon, Yeon‐Tae Yu

{"title":"Strategic Core‐Shell Integration for Advancing Z‐Scheme Heterojunctions: Interface‐Engineered ZnIn2S4/Ag2WO4@Ag Ternary Architecture for Enhanced Visible‐Light‐Driven Photocatalytic H2 Production and Pollutant Degradation","authors":"Bharagav Urupalli, Dong‐Seog Kim, Gi‐Seung Shin, Geun‐Jae Oh, Tuong Van Tran, Ji‐Wook Yoon, Yeon‐Tae Yu","doi":"10.1002/smll.202501833","DOIUrl":"https://doi.org/10.1002/smll.202501833","url":null,"abstract":"The spatial inhomogeneity of interfacial modifications, despite conventional approaches like co‐catalyst deposition and dopant incorporation, presents a critical bottleneck in achieving optimal charge carrier dynamics and sustained photocatalytic performance at semiconductor heterojunctions. To address this challenge, this study introduces a novel approach by encapsulating the wide‐bandgap semiconductor Ag2WO4 (AWO) in a particulate shell of plasmonic hot spots (metallic Ag), forming a well‐defined interface that facilitates consistent charge transfer and enhances photocatalytic efficiency. The engineered Ag2WO4@Ag (AWO@Ag) is strategically integrated with ZnIn2S4 (ZIS) nanosheets to design core–shell integrated Z‐scheme heterojunction. The optimized integration of AWO@Ag (12.5%) over ZIS nanosheets demonstrates a remarkable hydrogen generation performance, achieving 3142 µmol h−1g−1, surpassing the performance of pure ZnIn2S4 (1311 µmol h−1g−1). Through rational interface design with strong redox abilities, the system achieves an impressive methyl orange photodegradation efficiency of 97.16% within 60 min. Additionally, it exhibits photoanodic currents of 3.98 mA cm−2 at 2.2 V versus RHE in a neutral electrolytic medium, demonstrating enhanced water oxidation capability facilitated by AWO@Ag integration. The system's exceptional performance across hydrogen generation, dye degradation, and water oxidation, validates that this advanced structural design enables stable and sustained photocatalytic performance through its multifunctional properties.","PeriodicalId":228,"journal":{"name":"Small","volume":"13 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144503707","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

Comprehensive Optical Band-Edge Characterization for Multilayered MoTe2 and Its Application in van der Waals-Stacked Heterojunction Devices. 多层MoTe2的综合光学带边特性及其在范德华堆叠异质结器件中的应用。

IF 13.3 2区材料科学

Small Pub Date : 2025-06-26 DOI: 10.1002/smll.202503542

Yin-Chou Huang,Dai-Yan Yang,Luthviyah Choirotul Muhimmah,Yu-Hung Peng,Yen-Chang Su,Ching-Hwa Ho

{"title":"Comprehensive Optical Band-Edge Characterization for Multilayered MoTe2 and Its Application in van der Waals-Stacked Heterojunction Devices.","authors":"Yin-Chou Huang,Dai-Yan Yang,Luthviyah Choirotul Muhimmah,Yu-Hung Peng,Yen-Chang Su,Ching-Hwa Ho","doi":"10.1002/smll.202503542","DOIUrl":"https://doi.org/10.1002/smll.202503542","url":null,"abstract":"MoTe2 is considered a promising 2D material for solar energy and optoelectronic applications owing to its suitable bandgap value and specific excitonic behaviors. However, its band-edge and excitonic transitions have not been fully elucidated. In this study, micro-thermoreflectance (µTR) spectroscopy results show that multilayered 2H-MoTe2 exhibits multiple excitonic features, including A1s, B1s, A', C, D, E, F, and G excitons, as well as one indirect-gap related feature, observed in a 500 nm-thick nanoflake at 300 K. Thickness-dependent micro-photoluminescence (µPL) measurement reveals that the PL emission is undetectable at a thickness of ≈40 nm (56 layers), but it is initially detected at 0.944 eV for a thinner thickness of ≈20 nm (28 layers), and finally, it shifts to 1.042 eV and presents the highest PL intensity when the thickness decreases to 5 nm (7 layers). Density functional theory (DFT) band structure calculations reveal that monolayer MoTe2 is a direct semiconductor with the highest bandgap, which diminishes and finally converts to an indirect band with at ≈45 layers, nearly consistent with the thickness-dependent µPL results. From the DFT calculations, the A1s, B1s, A', C, D, E, F, and G band-edge exciton features in the µTR spectra of multilayered MoTe2 are verified and assigned. Additionally, a prototype p-SnS/n-MoTe2 stacking heterojunction device is fabricated. The built-in potential of the heterojunction diode is ≈0.62 V, matching well with the measured work function difference between the two heterojunction materials.","PeriodicalId":228,"journal":{"name":"Small","volume":"10 1","pages":"e2503542"},"PeriodicalIF":13.3,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144488080","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

Small最新文献