ChemNanoMat最新文献_第3页

Front Cover: (ChemNanoMat 1/2025)

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-10 DOI: 10.1002/cnma.202580101

引用次数: 0

Pt(II) Complex-Based Supramolecular Polymers with Fe(II) Ion

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-10 DOI: 10.1002/cnma.202400533

Junseo Kim, Minhye Kim, Dr. Heekyoung Choi, Prof. Dr. Jong Hwa Jung

{"title":"Pt(II) Complex-Based Supramolecular Polymers with Fe(II) Ion","authors":"Junseo Kim, Minhye Kim, Dr. Heekyoung Choi, Prof. Dr. Jong Hwa Jung","doi":"10.1002/cnma.202400533","DOIUrl":"https://doi.org/10.1002/cnma.202400533","url":null,"abstract":"In recent years, there has been significant interest in supramolecular architectures such as helical fibers, tubules, and nanotoroids (nanorings) due to their unique physical properties. In this study, we synthesized bis[terpyridine-based Pt(II)] complexes with an unoccupied terpyridine moiety on the opposite side. Interestingly, the mononuclear terpyridine-based Pt(II) complexes (Pt-L1 and Pt-L2) form helical supramolecular polymers. These supramolecular polymers, exhibited intense photoluminescence at 570–620 nm, corresponding to metal-to-ligand charge transfer (MLCT) and/or metal-metal ligand charge transfer (MMLCT). Conversely, the supramolecular polymers formed in the presence of Fe2+ ions were non-emissive. The metallosupramolecular polymers formed in the absence and presence of Fe2+ ions were generated by π-π and intermolecular hydrogen bonding interactions and/or Pt⋅⋅⋅Pt interactions. The supramolecular polymers were formed through a cooperative pathway involving a nucleation-elongation mechanism. The nonsigmoidal transition of the absorbance change could be fitted by using the equilibrium (EQ) model, from which the thermodynamic parameters (ΔGe, ΔHe, and ΔS) were determined. At 4 mM, the Gibbs′ free energy (ΔGe) of the supramolecular polymers of Pt-L1 and Pt-L2 without metal ions was calculated to be −18.9 and −17.4 kJ/mol, respectively.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404691","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

Recent Advancements in Metal-Organic Frameworks-Derived Metal Phosphides as Anode for Lithium-Ion Batteries

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-24 DOI: 10.1002/cnma.202400504

Junjie Yang, Jun Li, Chenxuan Xu, Binbin Wen, Linjun Si, Weifeng Shen, Zhenqiu Feng, Wanxin Mai, Xiaoming Lin, Yongbo Wu, Huachao Yang

{"title":"Recent Advancements in Metal-Organic Frameworks-Derived Metal Phosphides as Anode for Lithium-Ion Batteries","authors":"Junjie Yang, Jun Li, Chenxuan Xu, Binbin Wen, Linjun Si, Weifeng Shen, Zhenqiu Feng, Wanxin Mai, Xiaoming Lin, Yongbo Wu, Huachao Yang","doi":"10.1002/cnma.202400504","DOIUrl":"https://doi.org/10.1002/cnma.202400504","url":null,"abstract":"Transition metal phosphides (TMPs) are considered as a promising anode material for LIBs due to their potential high theoretical capacity, suitable lithiation potential and low polarization, but low conductivity and severe volume expansion limit the performance of TMPs. Since metal-organic framework (MOFs)-derived materials can inherit the advantages of MOFs, MOFs-derived metal phosphides have been widely used as anodes for LIBs and exhibit outstanding electrochemical performance. The MOFs derivatization strategy can be used to achieve the adjustment and optimization of the components and structure of metal phosphide composites, such as constructing rich heterojunction structure or designing stable carbon skeleton structure. These modifications effectively improve the electronic structure and structural stability of metal-phosphide composites, thus solving the current problems of TMPs. In conclusion, this paper systematically summarizes the basic strategies for the modification and preparation of TMPs applied to the field of energy conversion and energy storage from the phosphorus source used in the preparation of TMPs, and finally compares the preparation methods, modification and lithium storage properties of monometallic/bimetallic phosphides derived from MOFs, and looks ahead to the characteristics and possible future development of the metal phosphides obtained by derivatization of MOFs as precursor.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404822","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

Bifunctional Zr-MgAl Layered Double Hydroxide Catalyst for Sustainable Transfer Hydrogenation of Ethyl Levulinate to γ-Valerolactone

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-23 DOI: 10.1002/cnma.202400564

Sahil Kumar, Priyanka Choudhary, Devendra Sharma, Venkata Krishnan

引用次数: 0

Enhancing Epoxy Composites with Graphene and Graphene Oxide: Thermal and Mechanical Insights

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-23 DOI: 10.1002/cnma.202400488

Sławomir Wilczewski, Zdzisław Nowak, Michał Maj, Magdalena Osial, PhD Roman Minikayev, Michael Giersig

{"title":"Enhancing Epoxy Composites with Graphene and Graphene Oxide: Thermal and Mechanical Insights","authors":"Sławomir Wilczewski, Zdzisław Nowak, Michał Maj, Magdalena Osial, PhD Roman Minikayev, Michael Giersig","doi":"10.1002/cnma.202400488","DOIUrl":"https://doi.org/10.1002/cnma.202400488","url":null,"abstract":"This paper shows the graphene and graphene oxide nanoflakes as the 0.1, 0.5, 1, 2, and 4 wt.% reinforcement of epoxy-resin matrix to enhance the thermal and mechanical characteristics of the composite. Experimental measurement of the glass transition temperature and thermal expansion coefficient indicated that the addition of nanostructural filler improving the glass transition temperature about ~12 °C for nanocomposite filled carbon-based nanoparticles for both heating and cooling cycles compared to the bare epoxy resin. Young's elastic modulus measured by nanoindentation and the stress versus strain curves for different weight fractions of graphene nanoflakes additives during uniaxial compression and tension considered were obtained from the experiments. The distributions of logarithmic strain field for the transverse, axial and shear components on the nanocomposites sample surfaces, during the uniaxial tension process for quasi-static strain rates, were analyzed. The tensile strengths show improvement for nanocomposites with less than 1 % weight fraction of carbon-based nanoparticles. The compressive yield stress increased to a maximal value (at the recorded peak on the curve) for an epoxy nanocomposite having 2 wt.% oxidized graphene flakes, where both parameters were enhanced with the oxidized form of graphene for the more effective dispersion in the epoxy resin matrix over the bare graphene filler.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404397","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

Bias Selectable Dual Band Detectors Based on Vertically Aligned In2S3-Coated ZnO Nanorod Arrays Grown on p-GaN

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-23 DOI: 10.1002/cnma.202400557

Yu Qi, Lanfeng Li, Yaowen Xu, Guangcheng Gao, Naisen Yu, YunFeng Wu

引用次数: 0

Hierarchical Pore Engineering of Slope-Type Hard Carbon for Enhanced Sodium-Ion Storage

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-23 DOI: 10.1002/cnma.202400562

Yongqi Liu, Yun Zhang, Zhaowei Hu, Wenjie Zhang, Chuan Wang, Jiabiao Lian

引用次数: 0

Fe−Ni with Chitosan via Microwave and Carboxymethyl as Electrode Materials for Supercapacitor

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-23 DOI: 10.1002/cnma.202400594

Dianyuan Zheng, Rongbin Yao, Chengxiang Sun, Jinli Li, Yuhang Zheng, Jianhong Zhu, Cheng Liu

{"title":"Fe−Ni with Chitosan via Microwave and Carboxymethyl as Electrode Materials for Supercapacitor","authors":"Dianyuan Zheng, Rongbin Yao, Chengxiang Sun, Jinli Li, Yuhang Zheng, Jianhong Zhu, Cheng Liu","doi":"10.1002/cnma.202400594","DOIUrl":"https://doi.org/10.1002/cnma.202400594","url":null,"abstract":"Iron-nickel double hydroxides (Fe−Ni) have been broadly synthesized for supercapacitors (SC). However, the influence of precipitant quantity on SC performance is one of the present challenges. Herein, we found that Fe0.64Ni0.36@ graphite electrodes, the open and interconnected 3D graded conductive network of carboxymethyl chitosan-derived porous carbon (C), have achieved effective surface contact. In addition, iron and nickel reinforced redox active materials on porous carbon will undergo more redox reactions for rapid diffusion of electrolyte ions/electrons. Due to the special construction and the synergistic effect of multiple oxidation transformations, the prepared Fe0.64Ni0.36@graphite composite material exhibits a maximum capacitance of 1232 F g−1 at a current density of 1 A g−1. The prepared Fe0.64Ni0.36@graphite//Fe0.64Ni0.36@graphite symmetric supercapacitors exhibit a high energy density of 22.9 Wh kg−1 at a power density of 771 W kg−1. Particularly, the sample exhibits excellent cycling stability, retaining approximately 95.8 % capacitance after 5000 cycles.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689389","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

Fabrication of Ferulic Acid-Cellulose Nanocrystal Enhanced Stretchable and Antibacterial Hydrogels

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-16 DOI: 10.1002/cnma.202400560

Fangyu Li, Yajie Wang, Luchun Xu, Xiaxue Li, Wangcheng Song, Yanyong Mao, Jia Zhou, Hao Shi

{"title":"Fabrication of Ferulic Acid-Cellulose Nanocrystal Enhanced Stretchable and Antibacterial Hydrogels","authors":"Fangyu Li, Yajie Wang, Luchun Xu, Xiaxue Li, Wangcheng Song, Yanyong Mao, Jia Zhou, Hao Shi","doi":"10.1002/cnma.202400560","DOIUrl":"https://doi.org/10.1002/cnma.202400560","url":null,"abstract":"Hydrogels are widely utilized in biomaterials, medicine, and food science due to their versatile properties. This study developed a ferulic acid (FA) and cellulose nanocrystals (CNC) hydrogel within a polyacrylamide matrix, polymerized using ammonium persulfate and crosslinked with N-methylenebisacrylamide. The FA@CNC hydrogel demonstrated exceptional tensile ductility and elasticity. Antibacterial evaluations against Escherichia coli and Staphylococcus aureus revealed significant efficacy, with activity increasing proportionally to FA concentration. Swelling studies indicated a maximum equilibrium swelling ratio of 1210 % after 36 h, showcasing the hydrogel's ability to undergo substantial expansion while maintaining its original shape and structural integrity. It was indicated that the synthesized hydrogels were capable of absorbing large volumes of exudate while preserving a moist environment conducive to accelerated wound healing. Scanning electron microscopy analysis confirmed a regular and dense microstructure, which contributes to the hydrogel's mechanical stability and robustness. The optimized preparation process developed in this study resulted in hydrogels with significantly enhanced performance. These findings underscore the hydrogel's superior mechanical and functional properties, paving the way for innovative applications across biomaterials, medical, and food-related industries.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404754","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

Hydrothermally Synthesized Bi-Cr-Te Nanocomposites With Enhanced Nonlinear Two-Photon Absorption

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-12-10 DOI: 10.1002/cnma.202400516

S. Supriya, M. Mallik, A. Parida, R. Naik

{"title":"Hydrothermally Synthesized Bi-Cr-Te Nanocomposites With Enhanced Nonlinear Two-Photon Absorption","authors":"S. Supriya, M. Mallik, A. Parida, R. Naik","doi":"10.1002/cnma.202400516","DOIUrl":"https://doi.org/10.1002/cnma.202400516","url":null,"abstract":"This study highlights the importance of exploring BiCrTe nanocomposites to uncover their distinctive properties and potential applications. Three BiCrTe samples were synthesized using hydrothermal methods by varying the concentrations of Bi and Cr while maintaining a constant Te content. X-ray diffraction (XRD) confirmed the presence of Bi₂Te₃ and Cr₂Te₃ phases, supported by transmission electron microscopy (TEM) observations. A reduction in Bi content led to smaller crystallite sizes. Raman spectroscopy revealed characteristic vibrational modes associated with Bi₂Te₃ and Cr. Field emission scanning electron microscopy (FESEM) confirmed the nanoparticle-like morphology of the composites. X-ray photoelectron spectroscopy (XPS) provided detailed surface composition and electronic structure data, verifying the presence of all constituent elements. UV-Vis spectroscopy demonstrated a blueshift in absorbance with decreasing Bi content, with bandgap (Eg) values ranging from 3.31 to 3.61 eV. This increase in bandgap correlated with a reduction in refractive index (n). Nonlinear optical (NLO) studies revealed two-photon absorption behavior, along with a positive nonlinear absorption coefficient (β), third-order susceptibility (χ (3)), and refractive index (n2). These findings indicate that BiCrTe nanocomposites hold significant promise for advanced optoelectronic applications.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113693","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