Small Structures最新文献_第2页

Mesoporous Silica Nanoparticle Grafted Polypropylene Membrane toward Long-Term Efficient Oxygenation 介孔二氧化硅纳米粒子接枝聚丙烯膜实现长期高效氧合

Small Structures Pub Date : 2024-09-19 DOI: 10.1002/sstr.202400324

Aoxing Feng, Yakai Lin, Dayin Sun, Fangyu Wu, Huanhuan Wu, Yuanhui Tang, Fanchen Zhang, Wei Jia, Lixin Yu, Xiaolin Wang, Zhenzhong Yang

{"title":"Mesoporous Silica Nanoparticle Grafted Polypropylene Membrane toward Long-Term Efficient Oxygenation","authors":"Aoxing Feng, Yakai Lin, Dayin Sun, Fangyu Wu, Huanhuan Wu, Yuanhui Tang, Fanchen Zhang, Wei Jia, Lixin Yu, Xiaolin Wang, Zhenzhong Yang","doi":"10.1002/sstr.202400324","DOIUrl":"https://doi.org/10.1002/sstr.202400324","url":null,"abstract":"The trade-off between gas permeability and resistance to plasma leakage imposes a great challenge for the practical use of membranes in extracorporeal membrane oxygenation (ECMO). Herein, a polypropylene (PP) hollow-fiber composite membrane is fabricated by simply grafting mesoporous silica nanoparticles onto the commercial PP membrane, which shows a significantly enhanced gas permeability and superior resistance to plasma leakage. The performance metrics such as gas permeability, bubble point, surface hydrophobicity, and plasma leakage resistance are largely influenced by the type of functional groups on the silica nanoparticles (hydroxyl, vinyl, or trifluoropropyl). It is shown that the trifluoropropyl-group functionalized mesoporous silica nanoparticle grafted composite membrane demonstrates a superior performance than the commercial ECMO membrane of poly(4-methyl-1-pentene) (PMP). The bubble point is greatly elevated from 0.36 to 1.20 MPa while the decrease in gas flux is negligible within 4%. And the leakage resistance time is significantly prolonged from 600 to 4140 min. The gained benefits are originated from the enhanced mass transfer area and diminished surface pores of the composite membrane are grafted with the mesoporous nanoparticles. The high-performance PP-based composite membranes are cost-effective and promising in practical applications of ECMO.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"41 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulating Alkyl Groups in Copolymer to Control Ion Transport in Electrolyte-Gated Organic Transistors for Neuromorphic Computing 调节共聚物中的烷基，控制用于神经形态计算的电解质门控有机晶体管中的离子传输

Small Structures Pub Date : 2024-09-19 DOI: 10.1002/sstr.202400319

Junho Sung, Minji Kim, Sein Chung, Yongchan Jang, Soyoung Kim, Min-Seok Kang, Hee-Young Lee, Joonhee Kang, Donghwa Lee, Wonho Lee, Eunho Lee

{"title":"Modulating Alkyl Groups in Copolymer to Control Ion Transport in Electrolyte-Gated Organic Transistors for Neuromorphic Computing","authors":"Junho Sung, Minji Kim, Sein Chung, Yongchan Jang, Soyoung Kim, Min-Seok Kang, Hee-Young Lee, Joonhee Kang, Donghwa Lee, Wonho Lee, Eunho Lee","doi":"10.1002/sstr.202400319","DOIUrl":"https://doi.org/10.1002/sstr.202400319","url":null,"abstract":"Electrolyte-gated organic synaptic transistors (EGOSTs) have shed light on their potential in bioelectronics and neuromorphic computing. Numerous research have been studied to modulate their electrochemical doping performance and formulate a simple approach to control iontronics through the side-chain modulations; however, the effects of alkyl groups as side moieties have not been studied in detail on EGOSTs. Herein, the structural and electrical properties of conjugated polymers are systematically controlled through copolymerization with two different-alkyl group-derived monomers for enhancing the nonvolatile characteristics of EGOSTs. The relationships between crystal orientation and electrochemical doping states of conjugated copolymers, which varied with the different copolymerization ratios, are revealed. Also, the behavior of biological synapses, including paired-pulse facilitation, spike timing-dependent plasticity, and long-term potentiation/depression, are successfully simulated. In this study, new avenues are opened for the implementation of neuromorphic devices through side-chain engineering by showing that the alkyl chain modulates the doping performance.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clustered VCoCOx Nanosheets Anchored on MXene–Ti3C2@NF as a Superior Bifunctional Electrocatalyst for Alkaline Water Splitting 锚定在 MXene-Ti3C2@NF 上的簇状 VCoCOx 纳米片是用于碱性水分离的优质双功能电催化剂

Small Structures Pub Date : 2024-09-19 DOI: 10.1002/sstr.202400278

Wenxin Wang, Yourong Tao, Lulu Xu, Ruilong Ye, Peng Yang, Junjie Zhu, Liping Jiang, Xingcai Wu

{"title":"Clustered VCoCOx Nanosheets Anchored on MXene–Ti3C2@NF as a Superior Bifunctional Electrocatalyst for Alkaline Water Splitting","authors":"Wenxin Wang, Yourong Tao, Lulu Xu, Ruilong Ye, Peng Yang, Junjie Zhu, Liping Jiang, Xingcai Wu","doi":"10.1002/sstr.202400278","DOIUrl":"https://doi.org/10.1002/sstr.202400278","url":null,"abstract":"Ti3C2, one typical MXene, has great potential to be coupled with various transition metals. Herein, a novel and effective catalyst is developed by synergistically loading VCoCOx onto Ti3C2-modified nickel foam (VCoCOx–Ti3C2@NF). Field emission scanning electron microscope and high-resolution transmission electron microscopy are employed to characterize the morphology and structure. As expected, the catalyst optimized by response surface methodology attains overpotentials of 290 and 64 mV and Tafel slopes of 82 and 79 mV dec−1 for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively. By using the bifunctional VCoCOx–Ti3C2@NF catalyst, the water splitting current density achieves 10 mA cm−2 in 1.0 mol L−1 KOH electrolyte at cell voltage of 1.52 V, comparable with the noble metal electrolyzer Pt@C@NF||RuO2@NF (1.57 V). Furthermore, the resulting catalyst exhibits excellent cycling durability after 120 h of continuous catalysis, which retains 103.8% and 105.4% of potential (V vs reversible hydrogen electrode) for OER and HER, respectively. Density functional theory calculation reveals that the Gibbs free energy barriers for the OER and HER intermediates are reduced due to the integration of VCoCOx with Ti3C2@NF. The fabricated VCoCOx–Ti3C2@NF catalyst is a promising electrochemical material for clean energy production.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"195 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142260165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elucidating Supercrystal Mechanics and Nanoparticle Size and Shape Effects under High Pressure 阐明高压下的超晶力学及纳米粒子尺寸和形状效应

Small Structures Pub Date : 2024-09-19 DOI: 10.1002/sstr.202400303

Claire Hotton, Daniel García-Lojo, Evgeny Modin, Rahul Nag, Sergio Gómez-Graña, Jules Marcone, Jaime Gabriel Trazo, Jennifer Bodin, Claire Goldmann, Thomas Bizien, Isabel Pastoriza-Santos, Brigitte Pansu, Jorge Pérez-Juste, Victor Balédent, Cyrille Hamon

{"title":"Elucidating Supercrystal Mechanics and Nanoparticle Size and Shape Effects under High Pressure","authors":"Claire Hotton, Daniel García-Lojo, Evgeny Modin, Rahul Nag, Sergio Gómez-Graña, Jules Marcone, Jaime Gabriel Trazo, Jennifer Bodin, Claire Goldmann, Thomas Bizien, Isabel Pastoriza-Santos, Brigitte Pansu, Jorge Pérez-Juste, Victor Balédent, Cyrille Hamon","doi":"10.1002/sstr.202400303","DOIUrl":"https://doi.org/10.1002/sstr.202400303","url":null,"abstract":"Supercrystals, extended lattices of closely packed nanoparticles (NPs), present exciting possibilities for various applications. Under high pressures, typically in the gigapascal (GPa) range, supercrystals undergo significant structural changes, including adjustable interparticle distances, phase transformations, and the formation of new nanostructures through coalescence. While prior research has focused on ligand engineering's impact on supercrystal mechanical response, the influence of NP shape remains unexplored, especially for NPs larger than 10 nm coated with hydrosoluble ligands. This study examines the effects of NP shape on the mechanical properties of supercrystals using high-pressure small-angle X-ray scattering and focused ion beam–scanning electron microscopy tomography. Notably, supercrystals exhibit higher hardness levels compared to previously reported values for gold supercrystals, attributed to the use of larger NPs. Spherical and tetrahedral NPs rearrange before collapsing under pressure, whereas rods and octahedra coalesce without prior structural rearrangement, likely due to their higher packing fraction. Additionally, anisotropic deformation of NP lattices and sintering does not always correlate with deviatoric stresses. These findings refine the understanding of complex processes governing supercrystal structure under high pressure, opening new avenues for NP engineering and advancing plasmonic applications under extreme conditions.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"190 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Illuminating the Devolution of Perovskite Passivation Layers 照亮过氧化物钝化层的演变过程

Small Structures Pub Date : 2024-09-09 DOI: 10.1002/sstr.202400234

Marcin Giza, Aleksey Kozikov, Paula L. Lalaguna, Jake D. Hutchinson, Vaibhav Verma, Benjamin Vella, Rahul Kumar, Nathan Hill, Dumitru Sirbu, Elisabetta Arca, Noel Healy, Rebecca L. Milot, Malcolm Kadodwala, Pablo Docampo

{"title":"Illuminating the Devolution of Perovskite Passivation Layers","authors":"Marcin Giza, Aleksey Kozikov, Paula L. Lalaguna, Jake D. Hutchinson, Vaibhav Verma, Benjamin Vella, Rahul Kumar, Nathan Hill, Dumitru Sirbu, Elisabetta Arca, Noel Healy, Rebecca L. Milot, Malcolm Kadodwala, Pablo Docampo","doi":"10.1002/sstr.202400234","DOIUrl":"https://doi.org/10.1002/sstr.202400234","url":null,"abstract":"Surface treatment of perovskite materials with their layered counterparts has become an ubiquitous strategy for maximizing device performance. While layered materials confer great benefits to the longevity and long-term efficiency of the resulting device stack via passivation of defects and surface traps, numerous reports have previously demonstrated that these materials evolve under exposure to light and humidity, suggesting that they are not fully stable. Therefore, it is crucial to study the behavior of these materials in isolation and in conditions mimicking a device stack. Here, it is shown that perovskite capping layers templated by a range of cations on top of methylammonium lead iodide devolve in conditions commonly found during perovskite fabrication, such as exposure to light, solvent, and moisture. Photophysical, structural, and morphological studies are used to show that the degradation of these layered perovskites occurs via a self-limiting, pinhole-mediated mechanism. This results in the loss of whole perovskite sheets, from a few monolayers to tens of nanometers of material, until the system stabilizes again as demonstrated for exfoliated flakes of PEA2PbI4. This means that initially targeted structures may have devolved, with clear optimization implications for device fabrication.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pulsed Laser-Initiated Dual-Catalytic Interfaces for Directed Electroreduction of Nitrite to Ammonia 定向电还原亚硝酸盐至氨的脉冲激光引发的双催化界面

Small Structures Pub Date : 2024-09-09 DOI: 10.1002/sstr.202470044

Talshyn Begildayeva, Jayaraman Theerthagiri, Vy Thuy Nguyen, Ahreum Min, Hyeyoung Shin, Myong Yong Choi

引用次数: 0

Pressure-Enhanced Superconductivity and Structural Phase Transition in Layered Sn4P3 层状 Sn4P3 的压力增强超导性和结构相变

Small Structures Pub Date : 2024-09-09 DOI: 10.1002/sstr.202400381

Hao Ding, Jingyu Hou, Kun Zhai, Xin Gao, Junquan Huang, Feng Ke, Bingchao Yang, Congpu Mu, Fusheng Wen, Jianyong Xiang, Bochong Wang, Tianyu Xue, Anmin Nie, Xiaobing Liu, Lin Wang, Xiang-Feng Zhou, Zhongyuan Liu

{"title":"Pressure-Enhanced Superconductivity and Structural Phase Transition in Layered Sn4P3","authors":"Hao Ding, Jingyu Hou, Kun Zhai, Xin Gao, Junquan Huang, Feng Ke, Bingchao Yang, Congpu Mu, Fusheng Wen, Jianyong Xiang, Bochong Wang, Tianyu Xue, Anmin Nie, Xiaobing Liu, Lin Wang, Xiang-Feng Zhou, Zhongyuan Liu","doi":"10.1002/sstr.202400381","DOIUrl":"https://doi.org/10.1002/sstr.202400381","url":null,"abstract":"High pressure provides a unique tuning method depending on structure modulation to explore the structure–property relationship. Herein, the pressure-induced structural phase transformation and enhanced superconductivity in a layered binary phosphide Sn4P3 are reported. Comprehensive measurements using in situ synchrotron X-Ray diffraction and Raman spectroscopy reveal a structural phase transition with mild distortion of SnP3 building blocks and interlayer shrinkage under high pressure. This differs from a conventional trigonal SnAs(P)3 to square SnAs(P)4 topotactic transition in SnAs(P)-based compound. Through this structure reconstruction under high pressure, electron distribution has been reorganized and phonons have softened, facilitating a high superconducting temperature (Tc) value of 7.8 K at 34.9 GPa, which is almost six times higher than its ambient value. The study introduces a new transition route in layered SnAs/SnP-based intermetallic materials and provides insight into the structural and electronic changes under high pressure for Sn4P3.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multifold Fermions Boosted Hydrogen Evolution Reaction Catalysis in Cubic Palladium Bronze LaPd3S4 多倍费米子促进立方钯青铜 LaPd3S4 中的氢气进化反应催化作用

Small Structures Pub Date : 2024-09-09 DOI: 10.1002/sstr.202470041

Yang Li, Jialin Gong, Xiaotian Wang

引用次数: 0

Inkjet-Printed Flexible and Transparent Ti3C2Tx/TiO2 Composite Films: A Strategy for Photoelectrically Controllable Photocatalytic Degradation 喷墨打印的柔性透明 Ti3C2Tx/TiO2 复合薄膜：光电可控光催化降解策略

Small Structures Pub Date : 2024-09-09 DOI: 10.1002/sstr.202400214

Ziying Ji, Yiran Wu, Lu Liu, Wei Zheng, Meng Wu, Yuexia Li, Zhengming Sun, Guobing Ying

{"title":"Inkjet-Printed Flexible and Transparent Ti3C2Tx/TiO2 Composite Films: A Strategy for Photoelectrically Controllable Photocatalytic Degradation","authors":"Ziying Ji, Yiran Wu, Lu Liu, Wei Zheng, Meng Wu, Yuexia Li, Zhengming Sun, Guobing Ying","doi":"10.1002/sstr.202400214","DOIUrl":"https://doi.org/10.1002/sstr.202400214","url":null,"abstract":"The 2D Ti3C2Tx MXene has a large specific surface area, abundant functional groups, and low work function, which has potential in the field of photocatalytic materials. However, the manufacturing of controllable films with high photocatalytic properties and desirable transmittance is a challenging task. Herein, low-cost, large-scale, and rapid preparation of Ti3C2Tx/TiO2 flexible composite films have been successfully prepared by inkjet printing technology, which can be applied in complex and special environments, as well as in photoelectrically controllable places for photocatalytic performance. With the increase of the anatase TiO2, the transmittance of Ti3C2Tx/TiO2 films increases from 55.37% to 73.27% at 780 nm, corresponding to the square resistance of 1.112–206.496 kΩ sq−1 and the figure of merit of 0.48–0.005. When the amount of anatase TiO2 is 15%, the film has the best photocatalytic effect on methylene blue (MB) dye, reaching 68.94%. After five cycles of testing, the degradation efficiency of MB dye decreases by only 5.68%, showing that the film has good cycling stability. This work provides a new research direction for photoelectrically controllable photocatalytic degradation in complex and special environments.","PeriodicalId":21841,"journal":{"name":"Small Structures","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Covalently Linked Pigment@TiO2 Hybrid Materials by One-Pot Solvothermal Synthesis 通过一锅溶热合成实现共价连接的颜料@TiO2 混合材料

Small Structures Pub Date : 2024-09-09 DOI: 10.1002/sstr.202470043

Frank Sailer, Hipassia M. Moura, Taniya Purkait, Lars Vogelsang, Markus Sauer, Annette Foelske, Rainer F. Winter, Alexandre Ponrouch, Miriam M. Unterlass

引用次数: 0