ChemNanoMat最新文献_第10页

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

Fluorogenic Reaction Probes Defect Sites on Titanium Dioxide Nanoparticles 致氟反应探查二氧化钛纳米粒子上的缺陷位点

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-18 DOI: 10.1002/cnma.202400031

Dr. Li Zuo, Dr. Mohammad Akter Hossain, Dr. Rabindra Dubadi, Madelyn M. Kist, Fatiha Farhana, Dr. Jiao Chen, Prof. Mietek Jaroniec, Prof. Hao Shen

{"title":"Fluorogenic Reaction Probes Defect Sites on Titanium Dioxide Nanoparticles","authors":"Dr. Li Zuo, Dr. Mohammad Akter Hossain, Dr. Rabindra Dubadi, Madelyn M. Kist, Fatiha Farhana, Dr. Jiao Chen, Prof. Mietek Jaroniec, Prof. Hao Shen","doi":"10.1002/cnma.202400031","DOIUrl":"10.1002/cnma.202400031","url":null,"abstract":"Titanium dioxide nanoparticles (TiO2 NPs) have traditionally been utilized as industrial catalysts, finding widespread application in various chemical processes due to their exceptional stability and minimal toxicity. However, quantitatively assessing the reactive sites on TiO2 NPs remains a challenge. In this study, we employed a fluorogenic reaction to probe the apparent reactivity of TiO2 NPs. By manipulating the number of defect sites through control of hydrolysis speed and annealing temperature, we determined that the Ti(III) content is positively correlated with the reactivity of TiO2 NPs. Additionally, these Ti(III) sites could be introduced by reducing commercial TiO2 NPs using NaBH4. Our findings suggest that fluorogenic oxidation of Amplex Red is an effective method for probing defect site densities on TiO2 NPs. Utilizing single-molecule fluorescence imaging, we demonstrated the ability to map defect site density within TiO2 nanowires. Achieving sub-nanoparticle spatial resolution, we observed significant intraparticle and interparticle variations in the defect site distribution, leading to substantial reactivity heterogeneity.","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.202400031","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141527506","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

Bi2O2CO3/g-C3N4 Catalyst for Photocatalytic Coupling of Benzylamine under Mild Conditions 温和条件下光催化偶联苄胺的 Bi2O2CO3/g-C3N4 催化剂

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-06-16 DOI: 10.1002/cnma.202400182

Yunan Teng, Zhonghao Tan, Yingzhe Zhao, Zhuizhui Su, Meiling Li, Zixuan Zhang, Prof. Jianling Zhang

{"title":"Bi2O2CO3/g-C3N4 Catalyst for Photocatalytic Coupling of Benzylamine under Mild Conditions","authors":"Yunan Teng, Zhonghao Tan, Yingzhe Zhao, Zhuizhui Su, Meiling Li, Zixuan Zhang, Prof. Jianling Zhang","doi":"10.1002/cnma.202400182","DOIUrl":"10.1002/cnma.202400182","url":null,"abstract":"The photocatalytic conversion of benzylamine into imine is promising for industrial production and environmental protection. To develop photocatalysts with desirable compositions and microstructures is key to achieve high activity and selectivity. Here we propose the immobilization of Bi2O2CO3 on g-C3N4 for the photocatalytic conversion of benzylamine. The Bi2O2CO3/g-C3N4 catalyst possesses improved light absorption capacity, electron transmission rate and reduced electron-hole recombination than pure Bi2O2CO3. It can efficiently catalyze benzylamine coupling reaction under mild conditions, i. e., at room temperature, with air as oxidant and no additional oxidant involved. The maximum turnover frequency value of N-benzylbenzaldimine reaches 1555.3 μmol g−1 h−1 under this condition. The Bi2O2CO3/g-C3N4 catalyst has potential in other photocatalytic reactions.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 10","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141507031","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