ChemNanoMat最新文献_第8页

N-Doped Carbon Coated Bimetallic CoFe2O4 Nanomembranes as An Enhanced Negative Electrode for Asymmetric Supercapacitors 掺杂 N 的碳涂层双金属 CoFe2O4 纳米膜作为不对称超级电容器的增强型负电极

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-26 DOI: 10.1002/cnma.202400176

Dr. Ruizhi Li, Weiqun Li, Yuhua Li, Shengyuan Zhu, Dr. Xin Ba, Dr. Yingke Zhou

{"title":"N-Doped Carbon Coated Bimetallic CoFe2O4 Nanomembranes as An Enhanced Negative Electrode for Asymmetric Supercapacitors","authors":"Dr. Ruizhi Li, Weiqun Li, Yuhua Li, Shengyuan Zhu, Dr. Xin Ba, Dr. Yingke Zhou","doi":"10.1002/cnma.202400176","DOIUrl":"10.1002/cnma.202400176","url":null,"abstract":"In-suit nitrogen-doped carbon layer coated on CoFe2O4 nanomembrane (NC−CoFe2O4) directly grown on carbon cloth was successfully fabricated. The electrochemical performance was conveniently manipulated by regulating the molar ration of Co2+ : Fe3+ (molar ration=1 : 2, CoFe2O4 nanomembrane, 2.9 F cm−2). Nitrogen-doped (N-doped) carbon coating strategy on CoFe2O4 nanomembrane (NC−CoFe2O4) via annealing of polypyrrole (PPy) was presented and NC−CoFe2O4 nanomembranes displayed a prominent capacitance of 12.1 F cm−2 (2563.8 F g−1) at 5 mA cm−2. More important, the composite demonstrated more stable microstructure and showed long-term cycling stability (16.0 % decrease after 7000 cycles), which was significantly better than the unmodified CoFe2O4 (55.8 % decrease after 1000 cycles). To verify the practicability of the materials, an aqueous asymmetric supercapacitor has been fabricated using NC−CoFe2O4 composite anode and MnO2/CNTs cathode, and the device has a remarkable wide operating voltage range of 1.9 V. In addition, the assembled device has an exceptional specific capacity of 1.3 F cm−2 at 10 mA cm−2, high energy density (43.3 Wh kg−1 at a power density of 642.9 W kg−1), and also with a good capacity retention rate of 84.9 % after 1000 cycles.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Chelation Protection for Zinc Anode of Aqueous Batteries 锌阳极的螯合保护

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-24 DOI: 10.1002/cnma.202400123

Master Ao Liu, Xiaoyu Dong, Youfa Liu, Cong Peng, Prof. Yan Huang

{"title":"Chelation Protection for Zinc Anode of Aqueous Batteries","authors":"Master Ao Liu, Xiaoyu Dong, Youfa Liu, Cong Peng, Prof. Yan Huang","doi":"10.1002/cnma.202400123","DOIUrl":"10.1002/cnma.202400123","url":null,"abstract":"This mini-review comprehensively outlines the latest advancements in protecting zinc anodes in zinc-ion batteries (ZIBs) through chelation mechanisms. Chelation involves the coordination of ligands with Zn2+, offering promising strategies to address challenges such as dendrite formation and hydrogen evolution reactions. However, there is a lack of comprehensive and unified evaluation of chelation‘s protective effect on the zinc anode, which hinders a thorough assessment of chelation‘s effectiveness. Recent studies have demonstrated the excellent protective performance of chelation in altering solvation structures, modifying SEI structures, and selectively adsorbing species on the zinc anode. Furthermore, while chelation demonstrates significant benefits for the zinc anode, its impact on cathode materials must also be considered. Proper selection of chelation strengths and compatible cathode materials is essential for overall battery performance. Future research directions include exploring the effects of different ligands and coordination numbers on battery performance and extending chelation strategies to other secondary metal batteries. Understanding and optimizing chelation mechanisms are critical for advancing the development of high-performance ZIBs and other metal-ion battery technologies.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Fluorine Segments in Fluoropolymer matrix on the Properties of Gel Polymer Electrolytes 含氟聚合物基体中的氟段对凝胶聚合物电解质性能的影响

IF 3.8 4区材料科学

ChemNanoMat Pub Date : 2024-06-24 DOI: 10.1002/cnma.202400180

Wenting Chen, Feng Hai, Xin Gao, Jingyu Guo, Yikun Yi, Weicheng Xue, Wei Tang, Shanqing Zhang, Mingtao Li

{"title":"Effect of Fluorine Segments in Fluoropolymer matrix on the Properties of Gel Polymer Electrolytes","authors":"Wenting Chen, Feng Hai, Xin Gao, Jingyu Guo, Yikun Yi, Weicheng Xue, Wei Tang, Shanqing Zhang, Mingtao Li","doi":"10.1002/cnma.202400180","DOIUrl":"https://doi.org/10.1002/cnma.202400180","url":null,"abstract":"Polymer quasi‐solid electrolytes have been paid widely attention in account of their outstanding advantages in safety, flexibility, viscoelasticity and film formation. Fluoropolymer is used as matrix of gel electrolytes not only has high electrochemical stability, but also facilitates the dissociation of lithium salts owning to the strong electron‐absorbing C‐F groups, which makes it a very promising choice for the further development of gel electrolytes. Due to the different sites of C‐F bonds, their activity is also diverse, which results in the difference of the mobility of lithium ions and the LiF composition of SEI film on the surface of lithium metal anode. As a result, distinct fluorine‐containing gel polymer electrolytes are prepared by in‐situ polymerization of two different monomers, HFMA and TFMA. Compared with ‐CF3 on terminal group in TFMA, the gel electrolyte polymerized with HFMA whose C‐F group with stronger electronegativity is at the intermediate carbon site, as polymer matrix has better performance. The ionic conductivity achieves 7.02×10−3 S cm−1 at room temperature, and the assembled batteries have a capacity retention rate of 91% after 200 cycles of 1 C. Our research has laid a solid theoretical foundation for the further development of quasi‐solid electrolyte.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"3 1","pages":""},"PeriodicalIF":3.8,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Synthesis and Characterization of Cu@Hal, an Effective Heterogeneous Catalyst for Aqueous Multicomponent Azide-Alkyne [3+2] Cycloaddition Reactions 水基多组分叠氮-炔烃 [3+2] 环加成反应的高效异相催化剂 Cu@Hal 的合成与表征

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-22 DOI: 10.1002/cnma.202400212

Brooke N. Diehl, Jumanah Hamdi, Janelle Do, Loandi Cruz, Marisa Spengeman, Frank R. Fronczek, Dist. Prof. Mark L. Trudell

引用次数: 0

Bioinspired L-Lysine-Doped Polydopamine for Preventing and Treating UV-Induced Skin Damage 用于预防和治疗紫外线引起的皮肤损伤的掺杂 L-赖氨酸的生物启发聚多巴胺

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-22 DOI: 10.1002/cnma.202400158

Pengqi Zhu, Zhuangzhuang Niu, Caifang Gao, Yuqin Liu, Gang Li, Xiaoli Liu, Prof. Ruiping Zhang, Jinghua Sun

{"title":"Bioinspired L-Lysine-Doped Polydopamine for Preventing and Treating UV-Induced Skin Damage","authors":"Pengqi Zhu, Zhuangzhuang Niu, Caifang Gao, Yuqin Liu, Gang Li, Xiaoli Liu, Prof. Ruiping Zhang, Jinghua Sun","doi":"10.1002/cnma.202400158","DOIUrl":"10.1002/cnma.202400158","url":null,"abstract":"Excessive ultraviolet (UV) radiation causes a series of adverse effects on human skin, such as erythema and tanning due to the produce of endogenous melanin of human skin. Inspired by the self-defense mechanism of human skin to prevent UV radiation damage, we construct a natural and biocompatible Carb@PDA−L sunscreen hydrogel by doping melanin-like L-lysine doped polydopamine (PDA−L) to biocompatible poly-γ-glutamic acid based hydrogel matrix Carb, which displays good biosafety, efficient UV shielding performance and excellent antioxidative and anti-inflammatory performance in the application of the skin protection of sun and repair after sunburn. The melanin-like PDA−L can be synthesized by the oxidative polymerization of dopamine triggered by L-lysine under alkali-free condition, which exhibits increase absorption intensity in the UV region and better reactive oxygen species removal performance compared with undoped polydopamine in the perspective of a UV absorber. Meanwhile, PDA−L, as the synthetic analogue of natural melanin, has good biosafety, which can avoid the skin oxidative damage and penetrative toxicity of the conventional sunscreen.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

2D/2D Heterojunction of Cobalt-Iron Selenide Nanolamellas/MXene for Enhanced Electrocatalytic Hydrogen Evolution 二维/二维异质结钴铁硒纳米胶束/MXene 用于增强电催化氢气转化

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-21 DOI: 10.1002/cnma.202400045

Fengyi Zhu, Chen Liu, Linlin Hao, Chenyu Xu, Yingkun Zhu, Xiaying Liu, Prof. Haiyan He, Prof. Huajie Huang

{"title":"2D/2D Heterojunction of Cobalt-Iron Selenide Nanolamellas/MXene for Enhanced Electrocatalytic Hydrogen Evolution","authors":"Fengyi Zhu, Chen Liu, Linlin Hao, Chenyu Xu, Yingkun Zhu, Xiaying Liu, Prof. Haiyan He, Prof. Huajie Huang","doi":"10.1002/cnma.202400045","DOIUrl":"10.1002/cnma.202400045","url":null,"abstract":"Electrochemical water splitting is considered to be a green and flexible strategy for the mass production of hydrogen fuel, while the high cost and insufficent activity of current cathode catalysts severely suffocate the widespread thriving of hydrogen economy. Herein, we present a bottom-up assembly strategy to the controllable construction of 2D/2D heterojunctions built from cobalt-iron selenide nanolamellas and Ti3C2Tx MXene nanosheets. This unique architectural design gives the resulting CoyFe1-ySe2/Ti3C2Tx catalysts a series of interesting structural advantages, such as 2D/2D heterostructure, large active surface areas, modulated electronic structure, uniform CoyFe1-ySe2 dispersion, and good electron conductivity, thereby leading to strong synergistic coupling effects. As a consequence, the optimized Co0.7Fe0.3Se2/Ti3C2Tx electrocatalyst with an appropriate Co/Fe ratio possesses unusual hydrogen evolution properties in terms of a low overpotential of 69 mV at 10 mA cm−2, a small Tafel slope of 51 mV dec−1 and reliable long-term durability, which are more competitive than those of bare Ti3C2Tx, FeSe2 and CoSe catalysts.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Localized Surface Plasmon Resonance in Ag-In-Te Based Quantum Dots and Core/Shell Nanocrystals 基于 Ag-In-Te 的量子点和核/壳纳米晶体中的局部表面等离子体共振

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-20 DOI: 10.1002/cnma.202400297

Dr. Debadrita Bhattacharya, Dr. Tushar Debnath

{"title":"Localized Surface Plasmon Resonance in Ag-In-Te Based Quantum Dots and Core/Shell Nanocrystals","authors":"Dr. Debadrita Bhattacharya, Dr. Tushar Debnath","doi":"10.1002/cnma.202400297","DOIUrl":"10.1002/cnma.202400297","url":null,"abstract":"Localized surface plasmon resonance (LSPR) in plasmonic nanomaterials can concentrate light in the nano-dimension, leading to an enhancement of the light intensity by order of magnitude. While LSPR is a subject of extensive research in chalcogenide semiconductor nanocrystals (NCs), research on tellurium multinary chalcogenides (MnCs) remains elusive, possibly due to non-availability of the corresponding quantum dots (QDs). In this report, we show the sequential switching of plasmonic to non-plasmonic properties during the colloidal synthesis of AgInTe2 QDs. The reaction passes through several intermediates including AgInTe2/AgIn5Te8 core/shell NCs, AgInTe2 microrods (MRs), AgInTe2 QDs, and finally AgInTe2 quantum dot chain (QDC). Here, the AgInTe2/AgIn5Te8 core/shell NCs and AgInTe2 QDs depict strong LSPR absorption in the visible-NIR region until ~2000 nm. We propose that small-size quantum confined and cation deficient AgInTe2 particles are responsible for the observation of LSPR modes in both cases due to presence of the free carriers (holes). Our work on developing Te-based plasmonic MnC QDs may find significant advancement in the nanoscale light-matter interaction in semiconductor research.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Probe Beam Deflection Study of Au Nanoparticles Supported Into TiO2 Mesoporous Films 金纳米粒子在二氧化钛介孔薄膜中的探针光束偏转研究

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-19 DOI: 10.1002/cnma.202400291

Dr. Rusbel Coneo Rodríguez, Dr. Paula C. Angelomé, Dr. Gabriel Angel Planes, Dr. Cesar Alfredo Barbero, Dr. Mariano Bruno

引用次数: 0

Ionic Liquid-Assisted Defect Passivation for Efficient Carbon-Based Perovskite Solar Cells with Enhanced Filling Factor 离子液体辅助缺陷钝化技术用于提高填充因子的高效碳基包晶石太阳能电池

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-19 DOI: 10.1002/cnma.202400050

Junfang Zhang, Jiangying Lu, Xinrui Li, Suxin Zhao, Ye Yang, Dr. Peican Chen, Prof. Hanchi Cheng, Prof. Liya Zhou

{"title":"Ionic Liquid-Assisted Defect Passivation for Efficient Carbon-Based Perovskite Solar Cells with Enhanced Filling Factor","authors":"Junfang Zhang, Jiangying Lu, Xinrui Li, Suxin Zhao, Ye Yang, Dr. Peican Chen, Prof. Hanchi Cheng, Prof. Liya Zhou","doi":"10.1002/cnma.202400050","DOIUrl":"10.1002/cnma.202400050","url":null,"abstract":"The preparation of high-quality perovskite thin films with long-term stability is the prerequisite for realizing efficient perovskite solar cells (PSCs). In this work, the effect of the bifunctional additive 1-ethyl-3-methylimidazolium acetate (EMIMAc) ionic liquid on defect passivation in perovskite films was systematically investigated. Both theoretical simulations and experimental results reveal that EMIMAc has a strong coordination interaction with the undercoordinated Pb2+ through the lone electron pairs of carboxyl functional groups and the electron-rich imidazole moieties, leading to a decreased deep defect density of MAPbI3 system. Besides, EMIMAc treatment realizes energy band alignment. As a result, the photoelectric conversion efficiency (PCE) of optimized PSCs reaches 17.07 %, and the filling factor (FF) exceeded 74.91 % which is the highest FF for hole transport layer (HTL)-free carbon-based MAPbI3 devices based on TiO2 electron transport layer. Moreover, the unencapsulated EMIMAc-modified device maintains approximately 89 % of its initial PCE after 30 days, which demonstrates much better air stability than control devices. These results provide effective strategies for improving the efficiency and long-term stability of HTL-free carbon-based PSCs (H-C-PSCs).","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 9","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

From Structure to Catalysis: Advances in Metal-Organic Frameworks-Based Shape-Selective Reactions 从结构到催化：基于金属有机框架的形状选择性反应研究进展

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-18 DOI: 10.1002/cnma.202400049

Dr. Fahimeh Hooriabad Saboor, Dr. Shadab Shahsavari, Ms. Mahshid Zandjou, Dr. Mehrdad Asgari

{"title":"From Structure to Catalysis: Advances in Metal-Organic Frameworks-Based Shape-Selective Reactions","authors":"Dr. Fahimeh Hooriabad Saboor, Dr. Shadab Shahsavari, Ms. Mahshid Zandjou, Dr. Mehrdad Asgari","doi":"10.1002/cnma.202400049","DOIUrl":"10.1002/cnma.202400049","url":null,"abstract":"The presence of shape- and size-selective catalysts in various catalytic reactions is of paramount importance. Metal-organic frameworks (MOFs) possess a distinctive characteristic of lacking in-accessible dead spaces, owing to their well-structured nature. The effective separation of active sites within MOFs is facilitated by their exceptionally high surface area, which allows for a high density of active sites per unit volume of the catalyst. In this comprehensive review article, we delve into one of the most critical and practical features of MOFs: their ability to modify and engineer the structure of these materials. This structural engineering approach enables the attainment of desired physical, chemical, and surface properties, particularly in the realm of heterogeneous catalysts. The article encompasses several key areas, including surface functionalization within MOFs, synthesis of novel enzyme-inspired MOFs, creation of mesoporous MOFs, development of porous structures utilizing MOFs, and engineering of structural limitations in MOFs. These rapidly advancing and highly applicable topics, especially in the field of heterogeneous catalysts, are thoroughly investigated and analyzed within the purview of this comprehensive review article.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 7","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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