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Synthesis of Terminal Bifunctional Aliphatic Compounds via Catalytic Oxidation of 1,6-Hexanediol Over Pt-Loaded BiVO4

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202500860

Zhaoxin Li, Zewen Shen, Haotian Zhang, Chumin Yan, Lisha Yin, Yezi Hu, Guangtong Hai, Guixia Zhao, Xiubing Huang

{"title":"Synthesis of Terminal Bifunctional Aliphatic Compounds via Catalytic Oxidation of 1,6-Hexanediol Over Pt-Loaded BiVO4","authors":"Zhaoxin Li, Zewen Shen, Haotian Zhang, Chumin Yan, Lisha Yin, Yezi Hu, Guangtong Hai, Guixia Zhao, Xiubing Huang","doi":"10.1002/smll.202500860","DOIUrl":"https://doi.org/10.1002/smll.202500860","url":null,"abstract":"Terminal bifunctional aliphatic compounds are important intermediates for synthesis of drugs, food additives, polymers, while oxidative conversion from diols in mild conditions and the insight mechanism are rarely investigated. In this work, Pt-loaded BiVO4 (4%Pt/S-BVO and 4%Pt/H-BVO) is proposed to be utilized for the oxidation of 1,6-hexanediol (1,6-HDO). In dark conditions, the electronic metal-support interactions between Pt and BiVO4 and abundant oxygen vacancies (OVs) activated C-H and O2, leading to the primary oxidation of terminal hydroxyl group of 1,6-HDO. The generated·O2− radicals enable further oxidation of aldehyde group to carboxyl group. With illumination, the photo-generated holes promoted oxidation of hydroxyl group to aldehyde group while the increased ·O2− radicals promoted the oxidation of aldehyde group to carboxyl group. The introduced heat originated from the photothermal effect and an additional heat source is supposed to boost the mass transfer of molecules and ·O2− radicals. In particular, with more abundant OVs and exposed {040} facets, more ·O2− radicals, and improved charge separation, 4%Pt/S-BVO exhibit 90% conversion of 1,6-HDO with selectivity of 98.6% to TBACs in 6 h. Those findings highlight the great promise of catalytic organics transformation by integrating solar energy to enhance the reaction efficiency.","PeriodicalId":228,"journal":{"name":"Small","volume":"108 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862608","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

Surface Reconstruction of Amorphous Ni─Co─S─O Material with a Functional Gradient Layer for Highly Efficient and Stable Alkaline Hydrogen Evolution

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202502293

Lijuan Liu, Yingqiu Zheng, Wenshu Chen, Yongping Du, Linfeng Hu, Guoqiang Luo, Qiang Shen, Jian Zhang

{"title":"Surface Reconstruction of Amorphous Ni─Co─S─O Material with a Functional Gradient Layer for Highly Efficient and Stable Alkaline Hydrogen Evolution","authors":"Lijuan Liu, Yingqiu Zheng, Wenshu Chen, Yongping Du, Linfeng Hu, Guoqiang Luo, Qiang Shen, Jian Zhang","doi":"10.1002/smll.202502293","DOIUrl":"https://doi.org/10.1002/smll.202502293","url":null,"abstract":"Alkaline water electrolysis holds potential for large-scale, high-purity hydrogen production. However, the slow kinetics of water dissociation and challenging conditions in alkaline environments complicate the search for an electrocatalyst with both high activity and durability. In this study, a highly active and stable amorphous electrocatalyst is introduced, 3Ni─Co─S─O, developed via a straightforward electrodeposition method for alkaline hydrogen evolution reaction (HER). Notably, the surface of the 3Ni─Co─S─O catalyst undergoes a compositional reconstruction during alkaline HER, yet maintains its amorphous structure. This reconstruction spans roughly 6 µm, leading to a gradual decrease in Ni and S content and a corresponding increase in O concentration toward the surface, thereby forming a stable, gradient active layer. Benefitting from this layer and its amorphous nature, the 3Ni─Co─S─O catalyst demonstrates superior alkaline HER activity—requiring only 170 mV to achieve an industrial HER current density of 1000 mA cm−2. It also showcases remarkable stability, with a mere 15 mV increase in overpotential during continuous HER at 300 mA cm−2 for 24 h, outperforming the commercial Pt/C catalyst. The research provides a novel approach to designing high-performance amorphous alkaline HER electrocatalysts cost-effectively and contributes insights for understanding and developing advanced amorphous catalysts across various applications.","PeriodicalId":228,"journal":{"name":"Small","volume":"13 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862611","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

Simultaneous Halides Oxidation Inhibition and Defects Passivation for Efficient and Stable Perovskite Solar Cells

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202411259

Yansheng Sun, Wenda Li, Rongfei Wu, Weiwei Sun, Ran Yin, Xiaonan Huo, Kexiang Wang, Xiaoyang Fan, Tingting You, Penggang Yin

{"title":"Simultaneous Halides Oxidation Inhibition and Defects Passivation for Efficient and Stable Perovskite Solar Cells","authors":"Yansheng Sun, Wenda Li, Rongfei Wu, Weiwei Sun, Ran Yin, Xiaonan Huo, Kexiang Wang, Xiaoyang Fan, Tingting You, Penggang Yin","doi":"10.1002/smll.202411259","DOIUrl":"https://doi.org/10.1002/smll.202411259","url":null,"abstract":"Despite significant progress in improving the photovoltaic efficiency of perovskite solar cells (PSCs), achieving long-term operational stability remains challenging for their commercialization. Light-induced halide ion migration causes instability, oxidizing iodide into iodine. Elevated temperatures exacerbate this issue, resulting in irreversible device degradation. Here, ammonium oxalate (AO) is introduced as an additive to the perovskite precursor to prevent both the degradation of the perovskite precursor and the photo-induced degradation pathway to formamidinium iodide and PbI2 in perovskite films. AO stabilizes the precursor by inhibiting the oxidation of iodide ions (I−) and passivates charged traps through coordination and hydrogen bonding interactions, thereby enhancing crystallinity and reducing defects within the resultant perovskite films. This leads to the achievement of a higher-quality perovskite film with a low trap density and an extended carrier lifetime. In addition, the oxidation of I− within the perovskite film is inhibited, reducing the corrosion of I2 on the silver electrode and enhancing the long-term operating stability of the photovoltaic device. Consequently, the champion power conversion efficiency (PCE) of PSCs is increased from 22.19% to 24.82%. Meanwhile, the air, thermal, and light stability are also enhanced.","PeriodicalId":228,"journal":{"name":"Small","volume":"46 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction of Metal-Covalent Organic Frameworks with Trinuclear Copper Cluster for Efficient Triboelectric Nanogenerators 构建具有三核铜簇的金属-共价有机框架，实现高效的三电纳米发电机

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202502138

Huayun Ma, Qiang Zhang, Zhiqiang Zhu, Lipeng Zhai, Chao Huang, Liwei Mi

{"title":"Construction of Metal-Covalent Organic Frameworks with Trinuclear Copper Cluster for Efficient Triboelectric Nanogenerators","authors":"Huayun Ma, Qiang Zhang, Zhiqiang Zhu, Lipeng Zhai, Chao Huang, Liwei Mi","doi":"10.1002/smll.202502138","DOIUrl":"https://doi.org/10.1002/smll.202502138","url":null,"abstract":"Metal-cluster-based covalent organic frameworks (MCOFs), obtained through covalent connections between metal clusters and organic molecules, have shown considerable promise in many applications. However, MCOFs have rarely been employed as triboelectric materials in triboelectric nanogenerators (TENGs), and their corresponding effect on the triboelectric output has not been systematically elucidated. Here, for the first time, a set of MCOFs (Cu3-S-MCOF, Cu3-M-MCOF, and Cu3-L-MCOF) having similar skeletons but different pore spaces (2.1, 3.4, and 4.2 nm) are synthesized using copper-cyclic trinuclear units. All MCOFs are utilized as fillers in the methyl cellulose (MC) matrix to prepare a series of films as triboelectric layers for TENGs. Kelvin probe force microscopy (KPFM) showed that the surface charge density of the fabricated films can be precisely altered based on MCOFs. The mixing ratio between the MCOFs and MC is optimized to boost the triboelectric outputs of TENGs. A very high output current and voltage of up to 54.8 µA and 532.9 V, respectively, at 5 Hz are obtained from TENG with 10wt%Cu3-M-MCOF@MC, which is further employed as a sensor to monitor human motions. This study provides new insights into the investigation of MCOF materials having tunable functionality to achieve high-performance TENG devices.","PeriodicalId":228,"journal":{"name":"Small","volume":"31 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857331","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

Intrinsically Conductive, Optical Transparent, and Underwater Self-healing Ionogel with On-Demand Bonding Triggered by Skin Temperature

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202502449

Jun Gao, Enpei Chen, Wenjing Yuan, Chuizhou Meng, Jindan Wu, Shijie Guo

{"title":"Intrinsically Conductive, Optical Transparent, and Underwater Self-healing Ionogel with On-Demand Bonding Triggered by Skin Temperature","authors":"Jun Gao, Enpei Chen, Wenjing Yuan, Chuizhou Meng, Jindan Wu, Shijie Guo","doi":"10.1002/smll.202502449","DOIUrl":"https://doi.org/10.1002/smll.202502449","url":null,"abstract":"In the field of ionogels, reversible bonding–debonding triggered by mild and accessible stimuli is highly demanded especially for the use of bioelectric electrodes. In addition, the consistent stability of ionogels in underwater conditions are also needed to deal with complex practical scenarios. Herein, an intrinsically conductive, transparent, and underwater self-healing ionogel with on-demand bonding triggered by skin temperature is proposed. The ionogel is designed by incorporating long alkyl side chains into a chemically–physically crosslinked fluorine-rich elastomer with ionic liquid (IL) encapsulated as the conductive media. The long alkyl side chains undergo a semicrystalline-to-amorphous transition between 20 and 32 °C, resulting in large conductivity and adhesion variation of the ionogel. It can be reversibly bonding and debonding with the skin for more than 500 cycles without electrical/mechanical property degradation. The unique morphology with adaptive, conductive IL islands and ion shuttles ensure a high conductivity (1.3 × 10−2 S m−1) above the skin temperature even under 800% deformations. When utilized as bioelectric electrodes, the ionogel exhibits long-term stability, reusability, and high precision for electromyography and electrocardiogram signal collecting. This study proposes a new design of reversible bonding–debonding ionogel, which can be used in wet environments such as sweaty bodies and underwater conditions.","PeriodicalId":228,"journal":{"name":"Small","volume":"17 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862607","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

Preparation and Mechanism Insight of Biodegradable Kippah Vesicles

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202501838

Ping Wei, Nannan Gu, Qianxi Gu, Jinhui Jiang, Jinghua Chen, Jianzhong Du

{"title":"Preparation and Mechanism Insight of Biodegradable Kippah Vesicles","authors":"Ping Wei, Nannan Gu, Qianxi Gu, Jinhui Jiang, Jinghua Chen, Jianzhong Du","doi":"10.1002/smll.202501838","DOIUrl":"https://doi.org/10.1002/smll.202501838","url":null,"abstract":"Kippah vesicles, fully collapsed polymersomes formed during the self-assembly process, are characterized by a bowl-shaped nanostructure with a large specific surface area, high loading capacity, and an internal void. Current research shows that these structural features have primarily been achieved using non-biodegradable block copolymers, while the fundamental mechanism behind their formation is not well understood. Thus, designing biodegradable kippah vesicles and elucidating their formation mechanism is critical. In this study, a tetraphenylethylene (TPE) moiety – a luminogen with aggregation-induced emission (AIE) properties – is strategically introduced into the block copolymer side chain-, yielding the novel polypeptide poly(ethylene glycol)45-block-poly[(glutamic acid-TPE)26-stat-(glutamic acid)29] [PEG₄₅-b-P(GATPE₂₆-stat-GA₂₉)]. This polypeptide could self-assemble into kippah vesicles driven by hydrophobic interactions and hydrogen bonding, as confirmed by Fourier-transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV–vis) absorption, photoluminescence spectroscopy, and morphological characterization across different aggregation states. Notably, the intrinsic fluorescence of these kippah vesicles exhibited high cellular internalization efficiency and excellent cytocompatibility, highlighting their potential for biomedical applications such as bioimaging and targeted cellular delivery.","PeriodicalId":228,"journal":{"name":"Small","volume":"24 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862606","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

Broad-Spectrum ROS/RNS Scavenging Catalase-Loaded Microreactors for Effective Oral Treatment of Inflammatory Bowel Diseases

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202501341

Xiangyu Zhang, Yujie Zhu, Zijian Xiong, Wenjie Xie, Ming Shao, Zhuang Liu

{"title":"Broad-Spectrum ROS/RNS Scavenging Catalase-Loaded Microreactors for Effective Oral Treatment of Inflammatory Bowel Diseases","authors":"Xiangyu Zhang, Yujie Zhu, Zijian Xiong, Wenjie Xie, Ming Shao, Zhuang Liu","doi":"10.1002/smll.202501341","DOIUrl":"https://doi.org/10.1002/smll.202501341","url":null,"abstract":"Inflammatory bowel disease (IBD) such as ulcerative colitis (UC) is an autoimmune disease characterized by persistent inflammation along the gastrointestinal tract with excessive generation of reactive oxygen species (ROS)/reactive nitrogen species (RNS) generation. Here, catalase (CAT)-containing microreactor capsules with long-lasting broad-spectrum ROS/RNS-scavenging capability are developed for the treatment of IBD. In this design, CAT is encapsulated in the dense hydrogel network of calcium alginate (ALG) microspheres, which provides long-term protection of CAT activity in protease-rich intestinal environment. Afterward, the polydopamine (PDA) modification on the surface of CAT@ALG microspheres can provide them bioadhesiveness to achieve prolonged retention in the intestinal tract and broad-spectrum scavenging capability against various types of ROS/RNS beyond hydrogen peroxide. Enteric capsules are further used to protect the CAT@ALG–PDA microspheres from gastric fluid for selective release at the intestinal site. The combined action of PDA and CAT in CAT@ALG–PDA microreactors results in the broad-spectrum scavenging of excess ROS/RNS and regulates redox balance in acute UC rat model, showing satisfactory therapeutic effects superior to the mesalazine and adalimumab at clinically relevant doses without obvious side effects. This work highlights that these CAT@ALG–PDA capsules can act as long-acting broad-spectrum ROS/RNS reactors, promising for IBD treatment.","PeriodicalId":228,"journal":{"name":"Small","volume":"155 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862613","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

Thermally Stable and Shape-Adaptive Triboelectric Nanogenerators Based on Liquid Electrolytes with Low Vapor Pressure

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202500318

Teklebrahan Gebrekrstos Weldemhret, Nebiyou Tadesse Debele, Sofonias Nursefa Kedir, Alemtsehay Tesfay Reda, Dohyun Kim, Kwun-Bum Chung, Yong Tae Park

{"title":"Thermally Stable and Shape-Adaptive Triboelectric Nanogenerators Based on Liquid Electrolytes with Low Vapor Pressure","authors":"Teklebrahan Gebrekrstos Weldemhret, Nebiyou Tadesse Debele, Sofonias Nursefa Kedir, Alemtsehay Tesfay Reda, Dohyun Kim, Kwun-Bum Chung, Yong Tae Park","doi":"10.1002/smll.202500318","DOIUrl":"https://doi.org/10.1002/smll.202500318","url":null,"abstract":"Aqueous solution-based liquid electrode triboelectric nanogenerators (TENGs) have attracted considerable interest in recent years due to their exceptional stretchability, deformability, and inherent shape-adaptability. However, previous aqueous solution-based TENGs face challenges related to drying, which may lead to operational failures. In this study, a low-vapor pressure liquid (LVPL) electrode TENG (LVPL-TENG) is presented that uses branched polyethyleneimine (bPEI) or deep eutectic solvent, choline chloride/glycerol (ChCl:Gly), to increase the stability of the TENGs at high temperatures. The LVPL-TENGs achieve a power density of ≈6.2 and 4.0 w m−2 when using bPEI and ChCl:Gly as electrodes, respectively. Furthermore, these devices have remarkable energy harvesting capabilities while being stretched up to 400%. Importantly, the LVPL-TENGs maintain a constant electrical output after being stored at 100 °C for 24 h. Utilizing a simple single-electrode design, the LVPL-TENGs can efficiently harvest various small physiological movements, i.e., finger bending, grasping a coffee cup, or clicking a computer mouse. Additionally, the LVPL-TENGs have the potential to function as self-powered tactile sensors to detect the touch of any material object, indicating promising applications in the realm of human-machine interaction. This study opens new avenues for deploying stretchable and shape-adaptable TENGs operating at high temperatures.","PeriodicalId":228,"journal":{"name":"Small","volume":"29 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857509","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 Management of Ulcerative Colitis and its Associated Intra-Extra Intestinal Complications with a Multifunctional Inulin Hydrogel Complex

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202500726

Silong Wu, Yaoyu Hu, Zhenchao Tao, Yi Yu, Pengfei Zhu, Tao Li, Yu Jin, Yujie Wang, Haisheng Qian, Hua Wang, Yan Ma

{"title":"Comprehensive Management of Ulcerative Colitis and its Associated Intra-Extra Intestinal Complications with a Multifunctional Inulin Hydrogel Complex","authors":"Silong Wu, Yaoyu Hu, Zhenchao Tao, Yi Yu, Pengfei Zhu, Tao Li, Yu Jin, Yujie Wang, Haisheng Qian, Hua Wang, Yan Ma","doi":"10.1002/smll.202500726","DOIUrl":"https://doi.org/10.1002/smll.202500726","url":null,"abstract":"Excessive accumulation of reactive oxygen species (ROS) and dysbiosis of gut microbiota are pivotal etiological factors in the pathogenesis of ulcerative colitis (UC) and its associated intestinal and extraintestinal manifestations (e.g., intestinal microthrombosis, anxiety, and depression symptoms). This investigation presents a multifunctional inulin complex (PB/NKase@Inulin gel) incorporating Prussian blue nanozymes (PB NZs) and the thrombolytic agent nattokinase (NKase) for the therapeutic management of dextran sulfate sodium (DSS)-induced UC and its associated intestinal and extraintestinal complications. Following oral administration, the PB/NKase@Inulin gel, characterized by prolonged retention of PB NZs and NKase at inflamed colonic sites, can facilitate continuously ROS scavenging, attenuate oxidative stress damage, effectively reduce pro-inflammatory cytokine levels. Importantly, PB/NKase@Inulin gel can not only robustly inhibit inflammatory microthrombosis formation but also effectively lyses thrombi due to the potent thrombolytic properties of NKase both in vitro and in vivo. Furthermore, the PB/NKase@Inulin gel is able to modulate gut microbiota homeostasis and alleviate multiple stresses responses (including anxiety and depression) in a UC mouse model via microbiota-gut-brain (MGB) axis interactions. Overall, the PB/NKase@Inulin gel offers an innovative paradigm for comprehensive therapeutic interventions in DSS-induced UC and its multifaceted complications.","PeriodicalId":228,"journal":{"name":"Small","volume":"51 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862605","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

Site-Defined High-Loading Tellurium Single-Atom Nanozymes Anchored on Checkerboard-Patterned Graphyne for Sensor Array Construction 用于构建传感器阵列的锚定在棋盘格图案石墨烯上的定点高负载碲单原子纳米分子

IF 13.3 2区材料科学

Small Pub Date : 2025-04-22 DOI: 10.1002/smll.202501797

Jianing Xia, Jian Guo, Zhen Li, Saichao Cao, Ya Tang, Hongbin Zhao, Daixin Ye

{"title":"Site-Defined High-Loading Tellurium Single-Atom Nanozymes Anchored on Checkerboard-Patterned Graphyne for Sensor Array Construction","authors":"Jianing Xia, Jian Guo, Zhen Li, Saichao Cao, Ya Tang, Hongbin Zhao, Daixin Ye","doi":"10.1002/smll.202501797","DOIUrl":"https://doi.org/10.1002/smll.202501797","url":null,"abstract":"Single-atom nanozymes exhibit unique enzymatic activity due to their active centers, which resemble those of natural metalloenzymes. The design of the anchoring sites of single-atom active centers is an important factor that affects the loading capacity and catalytic activity. Herein, para-nitrogen-doped graphyne with diamond cavity is used as support, and single-atom tellurium atoms are then anchored in the nitrogen-containing graphyne cavities, akin to chess pieces placed on a chessboard grid. Due to the pre-designed regular anchoring sites, the site-defined tellurium single-atom nanozyme (Te SAN) achieves a high Te loading of 19.21 wt.%. Therefore, Te SAN shows good peroxidase-like activity. To explain the enhanced peroxidase-like activity, density functional theory calculations are performed and the results demonstrate that Te doping enhances catalytic activity by lower Gibbs free energy barrier for formation of •OH, a key intermediate in peroxidase-like activity. Finally, based on the inhibitory effect of bisphenols on nanozyme activity, the Te SAN-based sensor array successfully identifies five bisphenols, holding potential for on-site food safety monitoring. The design of the anchoring sites of single atoms in this work provides new ideas for precisely controlling the synthesis of nanozymes, exploring their action mechanisms, and enhancing their activities.","PeriodicalId":228,"journal":{"name":"Small","volume":"25 1","pages":""},"PeriodicalIF":13.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857575","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