ChemNanoMat最新文献_第7页

Ultrathin 2D Co-MOF Showcasing Remarkable Electrocatalytic Oxygen Evolution Coupled with Unparalleled Stability 超薄2D Co-MOF展示了卓越的电催化析氧以及无与伦比的稳定性

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-27 DOI: 10.1002/cnma.202400649

Parul Sood, Harshita Bagdwal, Krishankant, Arti Joshi, Monika Singh

{"title":"Ultrathin 2D Co-MOF Showcasing Remarkable Electrocatalytic Oxygen Evolution Coupled with Unparalleled Stability","authors":"Parul Sood, Harshita Bagdwal,  Krishankant, Arti Joshi, Monika Singh","doi":"10.1002/cnma.202400649","DOIUrl":"https://doi.org/10.1002/cnma.202400649","url":null,"abstract":"Oxygen Evolution Reaction (OER) is typically carried out utilizing noble metals and metal oxides based nanostructures. Yet, due to their numerous drawbacks, including high cost, poor stability and negative environmental effects; researchers are driven to create new electro-active materials. To that end, we report an ultrathin 2D Co-MOF [Co2(bpe)2.5(NO3)4(CH3O)] (Co-MOF) that crystallized under hydrothermal conditions, showing a terrific OER activity with an overpotential of 267 mV at the current density of 10 mA cm−2 and the low Tafel slope value of 104 mV dec−1. Two-dimensional MOFs offer numerous advantages over 3D MOFs such as better exposure and accessibility of active sites. The layered structure of 2D MOFs can provide greater structural flexibility, which can be beneficial for accommodating the changes during the OER process and maintaining structural integrity under operating conditions. The performance of Co-MOF surpasses commercially available OER catalyst RuO2, demonstrating an unprecedented prolonged stability of 112 hours, which, to the best of our knowledge, represents the longest stability, observed for any pristine MOF to date. From the post-OER characterization, it was discovered that in situ formed species, Co(OH)2 and CoOOH served as the active sites responsible for oxygen evolution.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143690288","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 of Composites of DNA and Boron Cluster-Metal Complexes and their Assembly into Functional Nanoparticles with Gene Silencing Activity DNA与硼簇金属配合物复合材料的合成及其组装成具有基因沉默活性的功能纳米颗粒

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-24 DOI: 10.1002/cnma.202400606

Krzysztof Śmiałkowski, Katarzyna Bednarska-Szczepaniak, Katarzyna Kulik, Justyna Suwara, Bohumir Grűner, Aleksander Foryś, Barbara Nawrot, Zbigniew J. Leśnikowski

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Innovative Synthesis and Characterization of Nano Hydroxyapatite: A Potential Adsorbent for Methyl Violet 6B Removal from Aqueous Solutions 纳米羟基磷灰石的创新合成和表征：一种去除甲基紫6B的潜在吸附剂

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-23 DOI: 10.1002/cnma.202400582

Mustafa Burak Telli, Tugkan Kutlu, Seda Karayünlü Bozbaş, Aybuke Şirin, Tuba Ünügül

{"title":"Innovative Synthesis and Characterization of Nano Hydroxyapatite: A Potential Adsorbent for Methyl Violet 6B Removal from Aqueous Solutions","authors":"Mustafa Burak Telli, Tugkan Kutlu, Seda Karayünlü Bozbaş, Aybuke Şirin, Tuba Ünügül","doi":"10.1002/cnma.202400582","DOIUrl":"https://doi.org/10.1002/cnma.202400582","url":null,"abstract":"In this study, the use of nano Hydroxyapatite (HAp) adsorbent as an adsorbent for the removal of methyl violet 6B (MV 6B) dye from aqueous solution was investigated. Nano adsorbent characterization was carried out by X-Ray Diffractometer (XRD), scanning electron microscopy (SEM), spot energy dispersive spectroscopy (EDS) analyses. The dye removal study was carried out using the classical batch adsorption process. In addition, isotherm, kinetic and thermodynamic adsorption studies were carried out for methyl violet 6B. In adsorption studies, the effects of initial dye concentration (10–40 mg/L), solution pH (2-8), adsorbent dosage (0.5–2.5 mg) and contact time (15–90 min.) on dye removal were investigated. At dye concentration was 10 mg/L, adsorbent dosage was 1 mg, solution pH was 6, contact time was 30 min and ambient temperature 25 °C, the highest MV 6B removal was 95.86 % and 1200 mg/g adsorption capacity was obtained. As a result of adsorption isotherm and kinetic studies, it was observed that the adsorption values obtained from the models were compatible with Langmuir isotherm model and pseudo-second order kinetic model. According to the thermodynamic data obtained, it was determined that the adsorption process was spontaneous and exothermic.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400582","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689598","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

The Rise of Zinc||Chalcogen Batteries with Conversion Mechanism 具有转换机理的锌||型锂电池的兴起

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-20 DOI: 10.1002/cnma.202400631

Zecong Zeng, Bingjie Ran, Mangwei Cui, Fusheng Liu, Yan Huang

引用次数: 0

Production of Uniform Electrospun 2-Cyanopyridinium Salicylate – Polyvinyl Alcohol Nanofibersusing Cylindrical Bar Collector for Nonlinear Optical Applications 非线性光学用圆柱形棒集热器制备均匀电纺2-水杨酸氰吡啶-聚乙烯醇纳米纤维

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-20 DOI: 10.1002/cnma.202400590

Kintali Manohor Prasad, S. Divagar, P. Srinivasan

{"title":"Production of Uniform Electrospun 2-Cyanopyridinium Salicylate – Polyvinyl Alcohol Nanofibersusing Cylindrical Bar Collector for Nonlinear Optical Applications","authors":"Kintali Manohor Prasad, S. Divagar, P. Srinivasan","doi":"10.1002/cnma.202400590","DOIUrl":"https://doi.org/10.1002/cnma.202400590","url":null,"abstract":"The electrospinning technique was used to synthesize nanofibers of organic 2-cynopyridinium salicylate (2-CPSC) molecules embedded in polyvinyl alcohol (PVA) polymer using both a drum collector and an indigenously made parallel bar cylindrical collector unit. The microscopical analysis was performed for the preliminary morphological study of the collected nanofibers using both a drum collector and a parallel bar collector. Scanning electron microscopic (SEM) analysis confirmed the formation of smooth, clear, cylindrical shape, and highly homogenous 2-CPSC – PVA nanofibers collected from the parallel bar collector unit compared to the drum collector, and these homogenous nanofibers were selected for further characterization. X-ray diffraction (XRD) study demonstrates the preferred crystallographic orientation of organic 2-CPSC molecules inside the host PVA polymer. The synthesized nanofibers were characterized using Fourier Transform Infrared (FTIR) Spectroscopy to confirm the presence of different molecular vibrations. Using ultraviolet-visible (UV-Vis) spectroscopic analysis, the complete transparency of the 2-CPSC – PVA nanofiber throughout the visible region is observed, and from Tauc's plot, the obtained optical band gap energy (Eg) is 5.24 eV. The Z-scan technique was employed to investigate the nonlinear absorption coefficient (β), nonlinear refractive index (n2), and third-order nonlinear susceptibility (<math></math>\u0000).","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 2","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143404813","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

Glycyrrhetinic Acid Prohibiting Fusion Peptides from Fusing with Cell Membrane 甘草次酸阻止融合肽与细胞膜融合

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2025-01-14 DOI: 10.1002/cnma.202400614

Zili Jia, Rongrong Wu, Yun Hao, Xiaolu Song, Shuai Hou, Changwei Shi, Yihao Cui, Lei Liu, Taofeng Zhu

{"title":"Glycyrrhetinic Acid Prohibiting Fusion Peptides from Fusing with Cell Membrane","authors":"Zili Jia, Rongrong Wu, Yun Hao, Xiaolu Song, Shuai Hou, Changwei Shi, Yihao Cui, Lei Liu, Taofeng Zhu","doi":"10.1002/cnma.202400614","DOIUrl":"https://doi.org/10.1002/cnma.202400614","url":null,"abstract":"The inhibition of the fusion peptide (FP) of the spike protein of coronaviruses, which mediates interactions with the host cell membrane, plays a critical role in the membrane fusion process. In this study, we investigated the interactions between the FP and cell membranes and evaluated the effect of three drug molecules — neferine (Nef), glycyrrhetinic acid (GA), quercetin (Qct) on the membrane fusion process by combining molecular dynamics (MD) simulations and experimental methods. Our findings revealed that glycyrrhetinic acid exhibited strong binding ability towards the FP (residues 815–828), with particularly interactions observed with key residues L821, L822, F823, and L828. Furthermore, we performed FITC fluorescence staining experiments on cells and assessed the inhibitory effects of glycyrrhetinic acid on FP. The results showed a significant reduction in fluorescence intensity in the FP-FITC experiment group treated with glycyrrhetinic acid, indicating that glycyrrhetinic acid interferes with the binding ability of FP and disrupts its localization on the cell membrane. Overall, this research will contribute to a deeper understanding of the inhibition mechanism of FP's membrane fusion process, which widely exists in the intrusion process between viruses and cells.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 3","pages":""},"PeriodicalIF":2.6,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689093","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

Front Cover: (ChemNanoMat 1/2025) 封面：（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 基于Pt（II）配合物的Fe（II）离子超分子聚合物

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 金属有机骨架衍生金属磷化物作为锂离子电池负极的研究进展

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

Enhancing Epoxy Composites with Graphene and Graphene Oxide: Thermal and Mechanical Insights 增强环氧复合材料与石墨烯和氧化石墨烯：热和机械的见解

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