Small Methods最新文献_第2页

Synthetic Methodologies and Structural Engineering of Biomass-Derived Adsorbents for CO2 Capture 生物质吸附剂捕获二氧化碳的合成方法和结构工程。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-10-06 DOI: 10.1002/smtd.71059

Song-Chan Pak, Fengyu Gao, Myong-Hyok Paek, Yifan Wang, Yaxin Niu, Kai Chen, Yuansong Zhou, Shunzheng Zhao, Xiaolong Tang, Honghong Yi

{"title":"Synthetic Methodologies and Structural Engineering of Biomass-Derived Adsorbents for CO2 Capture","authors":"Song-Chan Pak, Fengyu Gao, Myong-Hyok Paek, Yifan Wang, Yaxin Niu, Kai Chen, Yuansong Zhou, Shunzheng Zhao, Xiaolong Tang, Honghong Yi","doi":"10.1002/smtd.71059","DOIUrl":"10.1002/smtd.71059","url":null,"abstract":"<div>\u0000 \u0000 Developing sustainable, scalable, low-cost adsorbents constitutes a core prerequisite to realize practically viable CO2 capture technologies. Biomass-derived porous carbons represent attractive candidate sorbents owing to renewable raw feedstocks, tailorable pore architecture, intrinsic hydrophobic character, and moderate regeneration energy demand. This review adopts a methodology- and engineering-driven perspective to examine rational design principles, scalable fabrication routes, and structural engineering strategies of biomass-derived adsorbents for high-efficiency CO2 capture. Material-level links between manufacturing pathways, physicochemical features, and resultant CO2 adsorption performance are critically analyzed, covering a broad suite of carbonization, activation, and surface-modification approaches. Beyond material characteristics, engineering-relevant aspects are addressed, including pelletization of powdered sorbents, reactor configuration, and practical implementation within PSA (pressure swing adsorption), VSA (vacuum swing adsorption), and TSA (temperature swing adsorption) cyclic adsorption workflows for industrial-scale deployment. Key existing bottlenecks are outlined, such as lack of standardized synthesis workflows, insufficient anti-contamination performance, barriers for large-scale manufacturing, and absence of unified performance-assessment benchmarks. Corresponding future research avenues are suggested to promote the translation of lab-scale biomass-derived adsorbent research toward real-world CO2-capture practice.\u0000 </div>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149101739","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

Rear-Side ZnS Passivation With Spontaneous Local Point Contacts for Boosting Efficiency and Bifaciality in Ultrathin Semitransparent CuInSe2 Solar Cells 采用自发局部点接触后侧ZnS钝化提高超薄半透明CuInSe2太阳能电池的效率和双面性。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-10-01 DOI: 10.1002/smtd.71092

Jin Gi An, Junseop Byeon, TaeWan Kim, Joo Hyung Park

{"title":"Rear-Side ZnS Passivation With Spontaneous Local Point Contacts for Boosting Efficiency and Bifaciality in Ultrathin Semitransparent CuInSe2 Solar Cells","authors":"Jin Gi An, Junseop Byeon, TaeWan Kim, Joo Hyung Park","doi":"10.1002/smtd.71092","DOIUrl":"10.1002/smtd.71092","url":null,"abstract":"<div>\u0000 \u0000 Bifacial semitransparent (BST) solar cells utilizing transparent conducting oxides are advantageous in various applications because of their controllable transparency, ease of use, and potential in bifacial power generation using the albedo effect. However, their power conversion efficiency (PCE) is limited owing to the ultrathin absorber layer, where rear-side recombination may dominate. To suppress carrier recombination at the rear-interface in ultrathin BST CuInSe2 (CISe) solar cells, a direct passivation method is demonstrated, that is, a nanoscale ZnS layer is deposited between the rear-side of the CISe absorber and an indium tin oxide (ITO) back contact using atomic layer deposition. The ZnS layer spontaneously forms localized holes by recrystallization during CISe co-evaporation, which act as local direct conduction paths from the CISe to the ITO. The PCE of the BST-CISe solar cells increases dramatically from 5.29% to 9.79% after applying the optimal 20-nm ZnS layer. In addition, the passivation layer significantly reduces rear-side carrier recombination and increases the bifaciality factor. The bifacial power-generation density with rear-side ZnS passivation increases to 11.4% and 17.8% under total illumination of 1.2 and 2.0 sun (considering the albedo effect), respectively.\u0000 </div>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149101549","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

Low-Frequency Noise and Stability in Electrolyte-Gated Nanoscale Silicon Field-Effect Transistor Sensors 电解门控纳米硅场效应晶体管传感器的低频噪声与稳定性。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-10-13 DOI: 10.1002/smtd.71112

Yingtao Yu, Zheqiang Xu, Yihan Wang, Qitao Hu, Paul Solomon, Zhen Zhang

{"title":"Low-Frequency Noise and Stability in Electrolyte-Gated Nanoscale Silicon Field-Effect Transistor Sensors","authors":"Yingtao Yu, Zheqiang Xu, Yihan Wang, Qitao Hu, Paul Solomon, Zhen Zhang","doi":"10.1002/smtd.71112","DOIUrl":"10.1002/smtd.71112","url":null,"abstract":"Electrolyte-gated nanoscale silicon field-effect transistors (Si FETs), including silicon nanoribbon FETs (SiNRFETs) and nanowire FETs (SiNWFETs), have emerged as highly promising platforms for chemical and biological sensing. As these sensors move from proof-of-concept demonstrations toward quantitative assays, practical performance is increasingly governed not only by nominal sensitivity, but also by their signal-to-noise ratio (SNR) and baseline stability. Low-frequency noise (LFN), typically arising from carrier-number and mobility fluctuations in the solid-state device, as well as reversible ion adsorption/desorption processes at the solid–liquid interfaces, is generally characterized by an approximately 1/f-dependent power spectral density. It limits the minimum resolvable signal and thus determines the limit-of-detection (LoD). In parallel, slower nonstationary processes, including ion penetration and reference-electrode drift, cause baseline instability that complicates quantitative sensing and array calibration. This review discusses LFN and instability in electrolyte-gated nanoscale Si FET sensors as a coupled device-interface-readout problem. Mitigation strategies are also summarized. Representative examples illustrate how dominant noise sources can be identified and suppressed. Finally, we highlight the applications of low-noise and low-drift FET sensors. Next-generation electrolyte-gated nanoscale Si FET sensors require codesign of the transducer, sensing interface, electrolyte/reference environment, and front-end electronics to achieve a low LoD and high detection accuracy.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/smtd.71112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149163831","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

Iridium-Based Nanomaterials: Precise Fabrication, Structural and Electronic Modulation, and Biomedical Applications 铱基纳米材料：精密制造，结构和电子调制，以及生物医学应用。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-10-07 DOI: 10.1002/smtd.71098

Ruidong Yin, Songjing Zhong, Zhuo Wang, Yuxuan Zhang, Lefu Mei, Linlin Li

{"title":"Iridium-Based Nanomaterials: Precise Fabrication, Structural and Electronic Modulation, and Biomedical Applications","authors":"Ruidong Yin, Songjing Zhong, Zhuo Wang, Yuxuan Zhang, Lefu Mei, Linlin Li","doi":"10.1002/smtd.71098","DOIUrl":"10.1002/smtd.71098","url":null,"abstract":"<div>\u0000 \u0000 Iridium (Ir), a representative platinum-group metal, possesses unique 5d electronic structure, multiple accessible oxidation states, exceptional chemical stability, and highly tunable coordination chemistry, making it an attractive platform for biomedical nanotechnology. Recent advances in nanomaterial synthesis and interfacial engineering have enabled the development of diverse Ir-based nanomaterials, including coordination complexes, nanoparticles, single-atom nanocatalysts, and metal-organic frameworks, with precisely engineered electronic structures and catalytic properties. Through the rational regulation of valence states, crystal phases, defect structures, and metal-support interfacial interactions, these nanomaterials exhibit remarkable redox activity, enzyme-like catalysis, and responsiveness to external-field stimuli. In this review, we systematically summarize recent advances in the design, fabrication, structural and electronic engineering, physicochemical properties, and biological applications of Ir-based nanomaterials. Particular attention is given to their enzyme-mimetic activities, catalytic mechanisms, and unique bidirectional oxidative-antioxidative regulatory capabilities, as well as their cellular interactions and toxicological characteristics. We further summarize their emerging biomedical applications in biosensing, cancer therapy, and antimicrobial treatment, where catalytic regulation, tissue microenvironment modulation, and external-field-enhanced strategies collectively enable improved therapeutic performance. Finally, current challenges and future perspectives are discussed, including structure-activity relationship elucidation, intelligent stimulus-responsive therapeutic platforms, artificial intelligence (AI)-assisted materials discovery, long-term safety evaluation, and potential clinical translation.\u0000 </div>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149126168","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

Post-Processing Strategies for Laser-Scribed Grooves in Perovskite Solar Modules: Mechanisms, Trade-Offs, and Engineering Guidelines 钙钛矿太阳能组件中激光刻蚀槽的后处理策略：机制、权衡和工程指南。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-10-13 DOI: 10.1002/smtd.71127

Cheng Peng, Zhipeng Li, Dachang Liu, Li Wang, Zhongmin Zhou, Shuping Pang

{"title":"Post-Processing Strategies for Laser-Scribed Grooves in Perovskite Solar Modules: Mechanisms, Trade-Offs, and Engineering Guidelines","authors":"Cheng Peng, Zhipeng Li, Dachang Liu, Li Wang, Zhongmin Zhou, Shuping Pang","doi":"10.1002/smtd.71127","DOIUrl":"10.1002/smtd.71127","url":null,"abstract":"<div>\u0000 \u0000 Monolithic integration is widely regarded as a practical pathway toward scalable perovskite solar modules (PSMs). Despite substantial progress in understanding and mitigating laser-scribing-induced damage, laser-scribed groove regions remain important localized sources of performance loss and degradation that can affect module efficiency, reproducibility, and long-term stability. While a growing number of studies have reported various post-processing approaches for laser-scribed grooves, the field still lacks an engineering-oriented framework connecting laser-induced damage mechanisms with practical module-level mitigation strategies. In this review, we specifically focus on laser-scribed grooves as functionally dominant degradation zones, rather than treating them as minor processing defects. We introduce an engineering-oriented damage cascade framework to describe how laser-induced thermal disorder, defect generation, structural disruption, and transport processes are hierarchically coupled. Based on this perspective, existing post-processing strategies for grooves are systematically classified according to the stages of the damage cascade they primarily address. This enables a mechanism-guided evaluation of their effectiveness, trade-offs, and scalability.\u0000 </div>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149178406","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

PAINTpro: Protein-Based PAINT in Living Cells Using Engineered Reversible Bilirubin-Binding Fluorescent Protein PAINTpro：利用工程可逆胆红素结合荧光蛋白在活细胞中的蛋白基PAINT。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-08-11 DOI: 10.1002/smtd.70945

Min Zhu, Yukang Zhang, Luhao Zhang, Zihan Tang, Miao'er Qi, Yuhao Ji, Leiying Xie, Xiaogang Guo, Baohua Ji, Dechang Li, Yingke Xu

{"title":"PAINTpro: Protein-Based PAINT in Living Cells Using Engineered Reversible Bilirubin-Binding Fluorescent Protein","authors":"Min Zhu, Yukang Zhang, Luhao Zhang, Zihan Tang, Miao'er Qi, Yuhao Ji, Leiying Xie, Xiaogang Guo, Baohua Ji, Dechang Li, Yingke Xu","doi":"10.1002/smtd.70945","DOIUrl":"10.1002/smtd.70945","url":null,"abstract":"<div>\u0000 \u0000 Point accumulation for imaging in nanoscale topography (PAINT) is a single-molecule localization microscopy (SMLM) technique that achieves nanometer-level resolution, enabling direct observation of complex subcellular structures. However, its application in living cells remains limited by the lack of suitable labeling strategies and the challenge of imaging dynamic cellular structures over extended periods. In this study, we introduce PAINTpro, a protein-based PAINT technique that facilitates live-cell SMLM imaging and visualizes dynamic structures at the nanoscale. PAINTpro utilizes an engineered reversible bilirubin (BR)-binding protein, Fluorescent protein for Maximizing Imaging with Nano-resolution (FluoroMIN), derived from the green fluorescent protein UnaG. FluoroMIN incorporates mutations based on in silico molecular dynamics simulations to accelerate BR exchange, resulting in reversible fluorescence, high single-molecule signal yield, and prolonged switching lifetime. These properties enable both live-cell labeling and super-resolution PAINT imaging with a resolution of ∼50 nm. Moreover, PAINTpro supports long-term imaging of dynamic structures, providing time-resolved super-resolution images of microtubules with a resolution of up to 60 nm. Notably, PAINTpro is readily adaptable from existing protein-PAINT protocols, offering a powerful tool for super-resolution visualization of biological processes.\u0000 </div>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148704809","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 MXene Surface Structures on the Absorption Component in Reflection-Dominated Electromagnetic Interference Shielding MXene表面结构对反射主导电磁干扰屏蔽中吸收分量的影响。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-10-06 DOI: 10.1002/smtd.71084

Yuecheng Lai, Yuanyuan Tan, Chengkai Bao, Shuming Zhou, Guang Mo, Yunpeng Liu, Xueqing Xing, Zhongjun Chen, Yifang Song, Ke Li, Mengmeng Wang, Haiying Wang, Lanhong Dai, Zhonghua Wu

{"title":"Effect of MXene Surface Structures on the Absorption Component in Reflection-Dominated Electromagnetic Interference Shielding","authors":"Yuecheng Lai, Yuanyuan Tan, Chengkai Bao, Shuming Zhou, Guang Mo, Yunpeng Liu, Xueqing Xing, Zhongjun Chen, Yifang Song, Ke Li, Mengmeng Wang, Haiying Wang, Lanhong Dai, Zhonghua Wu","doi":"10.1002/smtd.71084","DOIUrl":"10.1002/smtd.71084","url":null,"abstract":"<div>\u0000 \u0000 MXene nanoflakes have attracted significant attention due to their outstanding electromagnetic interference (EMI) shielding effectiveness (SE). However, understanding the relationship between shielding performance and complex surface microstructures of MXene nanoflakes remains challenging. In this study, flexible selfstanding Ti3C2Tx films were synthesized under various preparation conditions, achieving an ultrahigh EMI shielding effectiveness exceeding 70 dB. The morphology and microstructure were characterized using scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), synchrotron radiation X-ray diffraction (SR-XRD), X-ray absorption fine structure spectroscopy (XAFS), and X-ray photoelectron spectroscopy (XPS). Based on the layered structure of MXene and the nearest- and next-nearest-neighbor coordination numbers around Ti atoms, an XAFS-based model was developed to estimate the surface Ti-vacancy rate (p) and average surface Tx-termination number (m). The results reveal that the shielding performance is jointly influenced by p and m through nonlinear coupling, with m exerting a more pronounced influence. Furthermore, the correlations among EMI absorption shielding performance, electrical conductivity, attenuation constant, surface structural parameters, and synthesis conditions were systematically analyzed, and the mechanism by which the surface structures affect the absorption shielding effectiveness was briefly discussed. We anticipate that this work will contribute to the surface engineering and optimization of advanced MXene-based shielding materials.\u0000 </div>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149101510","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

Scalable Room-Temperature Terahertz Graphene Cameras 可扩展的室温太赫兹石墨烯相机。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-04-27 DOI: 10.1002/smtd.70657

Lili Shi, Leonardo Viti, Miriam S. Vitiello

{"title":"Scalable Room-Temperature Terahertz Graphene Cameras","authors":"Lili Shi, Leonardo Viti, Miriam S. Vitiello","doi":"10.1002/smtd.70657","DOIUrl":"10.1002/smtd.70657","url":null,"abstract":"Terahertz (THz) imaging has emerged as a powerful tool for non-destructive, label-free analysis across several scientific disciplines, ranging from materials science to biomedical research. By capturing the spatial-dependent information in a broad range of frequencies, this technique enables the identification of chemical composition, structural heterogeneity, and dynamic processes in complex samples. However, the practical deployment of hyperspectral or broadband THz imaging has been limited by the performance, cost, and scalability of conventional detector technologies. In this work, we present two architectures of cameras based on large-area arrays of graphene field-effect transistors (GFETs), operating at room temperature, in a broadband configuration, and at terahertz frequencies. The devised GFET-based detectors exploit the photo-thermoelectric effect and are optimized for wideband sensitivity through on-chip broadband antenna design and gate-tunable responsivity. We thoroughly characterize the performance of individual pixel elements and introduce optimized multiplexed readout circuitry tailored for each configuration. Our GFET-based THz cameras exhibit exceptional performance metrics, including a noise equivalent power (NEP) on the order of nanowatts per square root hertz (nW/Hz1/2) and maximum responsivities reaching 36 V/W. Additionally, the pixel-to-pixel uniformity in sensitivity and electrical characteristics significantly reduces the complexity of calibration and control, enabling scalable implementations for large-format arrays.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/smtd.70657","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147758279","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

Mitigating Piezoelectric Screening Effect Via ZnO@ZnSe Core–Shell Heterojunction for Efficient H2O2-Mediated Piezocatalytic Uranium Immobilization 通过ZnO@ZnSe核壳异质结减轻压电屏蔽效应的高效h2o2介导的压电催化铀固定化。

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-08 Epub Date: 2026-09-30 DOI: 10.1002/smtd.71083

Song Li, Yingting Yang, Bahareh Khezri, Huaijuan Zhou

{"title":"Mitigating Piezoelectric Screening Effect Via ZnO@ZnSe Core–Shell Heterojunction for Efficient H2O2-Mediated Piezocatalytic Uranium Immobilization","authors":"Song Li, Yingting Yang, Bahareh Khezri, Huaijuan Zhou","doi":"10.1002/smtd.71083","DOIUrl":"10.1002/smtd.71083","url":null,"abstract":"<div>\u0000 \u0000 The sustainable expansion of nuclear power hinges on securing uranium supply and managing radioactive wastewater, yet conventional recovery methods suffer from low capacity, poor selectivity, and sluggish kinetics. Piezocatalysis offers a promising alternative, but its efficacy in single-phase materials is restricted by the piezoelectric screening effect. Herein, we construct a zinc oxide@zinc selenide (ZnO@ZnSe) heterojunction as a high-performance piezocatalyst for ultrasound-stimulated uranium recovery. A spontaneous interfacial built-in electric field with a ZnO-to-ZnSe orientation is established at the heterojunction, which actively mitigates the potential screening effect and amplifies the piezoelectric polarization. Consequently, the optimized ZnO@ZnSe-10 delivers an excellent uranium uptake capacity of 1372.7 mg·g−1, high extraction selectivity, and good cycling stability. Mechanistic investigations elucidate a hydrogen peroxide (H2O2)-mediated piezocatalytic cascade: piezoelectrons convert dissolved oxygen (O2) to superoxide radicals (•O2−), whose disproportionation generates in situ H2O2 that oxidatively precipitates soluble hexavalent uranyl ions (UO22+) as insoluble crystalline uranyl peroxide hydrates ((UO2)O2·2H2O and UO3·2H2O). Density functional theory (DFT) calculations further confirm that the interfacial electric field lowers the thermodynamic barrier for key oxygen-containing intermediates, thereby promoting sustained H2O2 production for uranium recovery. This work establishes a general strategy to overcome the piezoelectric screening effect, providing a feasible strategy for high-efficiency uranium extraction.\u0000 </div>","PeriodicalId":229,"journal":{"name":"Small Methods","volume":"10 21","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149101449","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

Ultrahigh Thermal Conductive Graphite Films Derived From Poly(p-Phenylene-1,3,4-Oxadiazole) Precursor Copolymerized With 2,6-Naphthalenedicarboxylic Acid. 聚（对苯-1,3,4-恶二唑）前驱体与2,6-萘二甲酸共聚制备的超高导热石墨薄膜

IF 8.7 2区材料科学

Small Methods Pub Date : 2026-11-05 DOI: 10.1002/smtd.71184

Shaopeng Chen, Hao Cheng, Weizhi Lin, Jing Yu, Chunhui Zhao, Feng Chen

{"title":"Ultrahigh Thermal Conductive Graphite Films Derived From Poly(p-Phenylene-1,3,4-Oxadiazole) Precursor Copolymerized With 2,6-Naphthalenedicarboxylic Acid.","authors":"Shaopeng Chen, Hao Cheng, Weizhi Lin, Jing Yu, Chunhui Zhao, Feng Chen","doi":"10.1002/smtd.71184","DOIUrl":"https://doi.org/10.1002/smtd.71184","url":null,"abstract":"Efficient thermal management materials are indispensable for next-generation electronic devices with ever-increasing power densities. However, the thermal conductivity of artificial graphite films remains far below the theoretical limit of graphene because abundant structural defects generated during carbonization and graphitization severely impede phonon transport. Herein, a pre-fused aromatization strategy is proposed to regulate the microstructural evolution of graphite films by introducing 2,6-naphthalenedicarboxylic acid (2,6-NDA) into a poly(p-phenylene-1,3,4-oxadiazole) (POD) precursor through copolymerization. The pyrolysis behavior of the copolymers was systematically investigated, revealing that the rigid fused naphthalene units promote the formation of enlarged conjugated aromatic domains during thermal decomposition, thereby facilitating the growth of highly ordered graphitic crystallites while suppressing defect generation during subsequent graphitization. Consequently, a graphite film with a thickness of 35 µm was successfully fabricated, exhibiting an ultrahigh in-plane thermal conductivity of 1820 ± 20 W m- 1 K- 1. Meanwhile, the incorporation of 2,6-NDA significantly increased the carbon residue ratio owing to its superior thermal stability. This work demonstrates that molecular-level pre-fused aromatization effectively tailors the graphitization pathway and provides a scalable strategy for producing low-defect, highly graphitized graphite films for advanced thermal management applications.","PeriodicalId":229,"journal":{"name":"Small Methods","volume":" ","pages":""},"PeriodicalIF":8.7,"publicationDate":"2026-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149340077","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