ChemNanoMat最新文献_第8页

Carbon based Composite Materials for Microwave Absorption in Low Frequency S and C Band: A Review 用于低频 S 和 C 波段微波吸收的碳基复合材料：综述

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-10-06 DOI: 10.1002/cnma.202400406

Sibt ul Hassan, Lizhen Hou, Daitao Kuang, Shiliang Wang

{"title":"Carbon based Composite Materials for Microwave Absorption in Low Frequency S and C Band: A Review","authors":"Sibt ul Hassan, Lizhen Hou, Daitao Kuang, Shiliang Wang","doi":"10.1002/cnma.202400406","DOIUrl":"https://doi.org/10.1002/cnma.202400406","url":null,"abstract":"With the rapid advancement of 5G technologies and electronic devices, there is a growing demand for microwave absorbing materials, especially those effective in low frequency microwave bands (2–8 GHz), making it an essential requirement. In recent years, many innovative microwave absorbers have been developed for low frequency absorption, with carbon/magnetic composite materials becoming particularly promising due to their various loss mechanisms and optimized impedance matching characteristics over a wide frequency range. However, there is currently a lack of a comprehensive review that summarizes the findings on low frequency absorbers. This review article thoroughly examines the current research on carbon/magnetic composite materials with efficient absorption performance in the low-frequency S and C bands. It provides a detailed discussion of the microwave absorption performance of these composite materials. Furthermore, the composite design strategies, synthesis techniques, microstructure performance relationship, and microwave attenuation mechanisms are summarized. Lastly, the challenges and future outlook for low frequency microwave absorbing materials are addressed. This review article aspires to provide new insights into designing and synthesizing composite materials to accomplish effective low-frequency microwave absorption, thereby promoting practical applications.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860413","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

Gold Nanoparticles Stabilized by δ-Cyclodextrin in Aqueous Media: Characterization and Evaluation of their Catalytic Properties in the Reduction of 4-Nitrophenol 水介质中δ-环糊精稳定金纳米颗粒的表征及其对4-硝基苯酚还原的催化性能评价

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-10-04 DOI: 10.1002/cnma.202400246

Ernesto de la Torre, Sébastien Noël, Antonio Madureira, Kasper Hornstrup Hansen, Andreas Erichsen, Anne Ponchel, Sophie R. Beeren, Éric Monflier, Bastien Léger

{"title":"Gold Nanoparticles Stabilized by δ-Cyclodextrin in Aqueous Media: Characterization and Evaluation of their Catalytic Properties in the Reduction of 4-Nitrophenol","authors":"Ernesto de la Torre, Sébastien Noël, Antonio Madureira, Kasper Hornstrup Hansen, Andreas Erichsen, Anne Ponchel, Sophie R. Beeren, Éric Monflier, Bastien Léger","doi":"10.1002/cnma.202400246","DOIUrl":"https://doi.org/10.1002/cnma.202400246","url":null,"abstract":"The synthesis of gold nanoparticles stabilized by cyclomaltononaose (δ-CD) in aqueous phase was performed. Protection of the gold nanoparticles by standard native cyclodextrins such as α-CD, β-CD and γ-CD has also been considered for comparison. All of these colloidal suspensions were fully characterized by FT-IR, DLS, UV-Vis spectroscopy, TEM, XPS and also NMR experiments. Finally, their catalytic activity was evaluated in the reduction of 4-nitrophenol to 4-aminophenol in the presence of an excess of sodium borohydride. Gold nanoparticles stabilized by δ-CD presented good activity and exhibited better long-term stability. This study highlighted the fact that the obtention of the best catalytic activity corresponds to not only a compromise between the size of the nanoparticles and the interaction of the substrate with the metal nanoparticles surface, but also the supramolecular interactions between the substrate and the cyclodextrin.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400246","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142860036","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

Tellurium Enriched Over-Oxidized MoTe2 Anchored MXene Sheets: A Promising Li-ion Battery Anode Material 富碲过氧化MoTe2锚定MXene片：一种很有前途的锂离子电池负极材料

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-10-03 DOI: 10.1002/cnma.202400384

Rohan S. Kamat, Chetana U. Mulik, Xijue Wang, Chinmayee Padwal, Abhishek A. Kulkarni, Lata D. Jadhav, Deepak P. Dubal

引用次数: 0

Tuning Thin Film Thickness and Porosity with Layer-by-Layer Submicronic Particles Assembly 用亚微米粒子逐层组装调整薄膜厚度和孔隙度

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-10-01 DOI: 10.1002/cnma.202400404

Siham Mouhtadi, Florian E. Jurin, Cédric C. Buron, Isabelle Pochard

{"title":"Tuning Thin Film Thickness and Porosity with Layer-by-Layer Submicronic Particles Assembly","authors":"Siham Mouhtadi, Florian E. Jurin, Cédric C. Buron, Isabelle Pochard","doi":"10.1002/cnma.202400404","DOIUrl":"https://doi.org/10.1002/cnma.202400404","url":null,"abstract":"Porous NiO films were prepared using Layer-by-Layer assembly of submicronic β-Ni(OH)2 nanoplatelets and size-controlled poly(methyl methacrylate) (PMMA) particles. β-Ni(OH)2/PMMA thin films were elaborated using different PMMA particle sizes and concentrations. The elaborated films were then heated at a temperature of 325 °C in air for one hour to form porous NiO films by calcining β-Ni(OH)2 nanoplatelets. PMMA polymeric particles were also calcined during this process, leading to film porosity. Thermal treatment experiments clearly showed a relationship between PMMA particle size and film properties i. e., porosity and thickness. NiO films exhibited huge pores, around 1 μm, and matter loss after calcination when PMMA particles with a diameter of 190±43 nm were employed. Partial collapsing of the films was also denoted. Experiments were then carried out by decreasing PMMA particle size (100±19 nm) leading to cohesive NiO films. Finally, the specific surface area (SSA) of the NiO films prepared with PMMA particles of 100 nm was determined by adsorption-desorption of nitrogen gas using the BET (Brunauer–Emmet–Teller) method. This showed an increase in SSA with PMMA particle concentration.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859870","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

Nanoparticle Formulations for the Improvement of Symptomatic Treatments of Neurodegenerative Disorders 改善神经退行性疾病对症治疗的纳米颗粒制剂

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-30 DOI: 10.1002/cnma.202400147

India Boyton, Claire Rennie, Lyndsey E. Collins-Praino, Andrew Care

{"title":"Nanoparticle Formulations for the Improvement of Symptomatic Treatments of Neurodegenerative Disorders","authors":"India Boyton, Claire Rennie, Lyndsey E. Collins-Praino, Andrew Care","doi":"10.1002/cnma.202400147","DOIUrl":"https://doi.org/10.1002/cnma.202400147","url":null,"abstract":"Neuronanomedicine merges nanotechnology and neuroscience in the pursuit of engineering therapeutic interventions for neurological disorders, including Alzheimer's disease (AD) and Parkinson's disease (PD). While no nanoparticle-based drug delivery systems (NDDSs) are yet approved for use for targeting the central nervous system, this review critically analyses the development of NDDSs for the improvement of currently approved therapeutics for the symptomatic treatment of AD and PD. It showcases how NDDSs can help therapeutic payloads overcome existing limitations, such as insufficient drug accumulation in the brain and limited effectiveness, by enhancing their pharmacokinetics, bioavailability, brain penetration and accumulation, and overall therapeutic efficacy through drug encapsulation, manipulation of nanoparticle properties, and nanoparticle surface functionalisation. However, we also draw attention to widespread issues in the field that impede progress, including the poor selection of in vitro models and the inadequate design of pre-clinical in vivo studies. We further advocate for greater standardisation of study design and reporting requirements in the future, which would likely enhance outcomes and expedite the translation of neuronanomedicines.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862358","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

Cs-Promoted Co Particles on Yttria-Stabilized Zirconia as Coke-Tolerance Methane Dry Reforming Catalyst under Elevated Pressure 氧化钇稳定氧化锆上cs促进的Co颗粒作为高压下耐焦甲烷干重整催化剂

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-29 DOI: 10.1002/cnma.202400460

Penghao Zhang, Juntao Yao, Yi-an Zhu, Zhicheng Liu, Kake Zhu

{"title":"Cs-Promoted Co Particles on Yttria-Stabilized Zirconia as Coke-Tolerance Methane Dry Reforming Catalyst under Elevated Pressure","authors":"Penghao Zhang, Juntao Yao, Yi-an Zhu, Zhicheng Liu, Kake Zhu","doi":"10.1002/cnma.202400460","DOIUrl":"https://doi.org/10.1002/cnma.202400460","url":null,"abstract":"Methane reforming with CO2 (dry reforming) co-converts the two green-house gases into synthesis gas and offers a promising way to integrate CO2 utilization into the current chemical infrastructure. One major obstacle for its industrial deployment is coke deposition on catalyst surface, in particular, under industrially relevant, pressurized operation conditions. Most catalytic investigations are conducted at atmospheric pressure, but the elevation in pressure poses a grand challenge for catalyst design. In this study, we demonstrate that Cs can promote carbon-tolerance of Co catalyst supported on Yttria-stabilized Zirconia under 20 bar, 850 °C with stochiometric feed flow for up to 100 h, which is often regarded as accelerated deactivation testing condition. Lowered amount and mostly CO2 gasifiable residue carbons are determined in Cs-promoted spent Co-catalyst, with respect to pristine Co catalyst. Kinetic studies reveal that Cs slows down coke deposition, while the essential reaction mechanism on pristine Co catalyst remains unaltered. Cs+ moieties absorb CO2 to afford Cs2CO3 that can release O* on adjacent Co surface to facilitate surface C* oxidation and simultaneously suppress carbon nucleation. The disclosure of the promoting effect of Cs on Co catalyst may have implications to other reforming catalyst and process design.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120944","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

Controllable Multilayer of High-performance Si/C Anode Materials Synthesized at Low Temperature from Industrial Ca-Si Alloy and CCl4 for Lithium-ion Batteries 用工业钙硅合金和CCl4低温合成高性能硅/碳负极材料的可控多层研究

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-29 DOI: 10.1002/cnma.202400253

Xinghao Zhao, Kai Yu, Zhiqiang Ning, Qiushi Song, Hongwei Xie

{"title":"Controllable Multilayer of High-performance Si/C Anode Materials Synthesized at Low Temperature from Industrial Ca-Si Alloy and CCl4 for Lithium-ion Batteries","authors":"Xinghao Zhao, Kai Yu, Zhiqiang Ning, Qiushi Song, Hongwei Xie","doi":"10.1002/cnma.202400253","DOIUrl":"https://doi.org/10.1002/cnma.202400253","url":null,"abstract":"A simple and energy-saving synthesis process for the high-performance Si/C anode material of lithium-ion batteries is advantageous for application. In this paper, the layered Si/C composite was synthesized by a low temperature one-pot synthesis from industrial Ca−Si alloy and CCl4. The effect of synthesis temperature on the structure and performance of the products was investigated. We found that low temperature favors to the multilayer structure of Si/C. Taking the advantage of the layered structure, the Si/C-300 anode material prepared at the temperature of 300 °C has good electrochemical performance of a reversible capacity of more than 1000 mAh g−1 at a current density of 2 A g−1 for 300 cycles, with a capacity retention ratio of 82.8 %, and an ICE of 77.0 %. At a high current density of 6 A g−1, the specific discharge capacity of 721.6 mAh g−1 can be achieved. The synthesis method provides a promising route to high performance silicon-carbon anode materials.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862391","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

Tightly Interfaced Cu2O with In2O3 to Promote Hydrogen Evolution in Presence of Biomass-Derived Alcohols Cu2O与In2O3紧密界面促进生物质衍生醇存在下的析氢

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-27 DOI: 10.1002/cnma.202400459

Salvatore Impemba, Giacomo Provinciali, Jonathan Filippi, Stefano Caporali, Beatrice Muzzi, Andrea Casini, Maria Caporali

{"title":"Tightly Interfaced Cu2O with In2O3 to Promote Hydrogen Evolution in Presence of Biomass-Derived Alcohols","authors":"Salvatore Impemba, Giacomo Provinciali, Jonathan Filippi, Stefano Caporali, Beatrice Muzzi, Andrea Casini, Maria Caporali","doi":"10.1002/cnma.202400459","DOIUrl":"https://doi.org/10.1002/cnma.202400459","url":null,"abstract":"By a mild and straightforward synthetic protocol in aqueous solution and without surfactants, hierarchical Cu2O nanospheres were grown on preformed In2O3 nanostructures, varying the ratio In : Cu (2.5, 0.5). Accordingly, two different binary compounds In2O3-Cu2O were prepared and afterwards they were integrated with TiO2 NPs. The ternary composites having a loading of 2.0, 5.0 and 10.0 wt.% respectively of binary In2O3-Cu2O, were tested as photocatalysts in the solar-driven production of hydrogen from water, using as sacrificial agents alcohols derived from the biomass. Satisfyingly, the rate of H2 evolution (20.5 mmol/g h) resulted two orders of magnitude higher respect to bare TiO2 (0.2 mmol/g h). Electrochemical impedance spectroscopy and photoluminescence measurements revealed the formation of a tight heterojunction between In2O3 and Cu2O, which is responsible for the improved charge carrier density and transfer and for the diminished electron-hole recombination.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cnma.202400459","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862334","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

Clinically Boosting Cancer Molecular Targeted Radioligand Therapies with Innovative Nanomaterials 利用创新纳米材料提高癌症分子靶向放射性配体疗法的临床疗效

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-26 DOI: 10.1002/cnma.202400449

Malcolm Lim, Peter T. Simpson, Sunil R. Lakhani, Mostafa Kamal Masud, Simon Puttick, Stephen Rose, Matthew J. Roberts, Kevin M. Koo

引用次数: 0

First-Principles Molecular Dynamics Study on Reductive Stability of High Concentration Electrolyte on Zn Doped Cu Current Collector Surface 高浓度电解质在Zn掺杂Cu集电极表面还原稳定性的第一性原理分子动力学研究

IF 2.6 4区材料科学

ChemNanoMat Pub Date : 2024-09-21 DOI: 10.1002/cnma.202400364

Santhanamoorthi Nachimuthu, Yuan-Yu Wang, Shih-Huang Pan, Jyh-Chiang Jiang

{"title":"First-Principles Molecular Dynamics Study on Reductive Stability of High Concentration Electrolyte on Zn Doped Cu Current Collector Surface","authors":"Santhanamoorthi Nachimuthu, Yuan-Yu Wang, Shih-Huang Pan, Jyh-Chiang Jiang","doi":"10.1002/cnma.202400364","DOIUrl":"https://doi.org/10.1002/cnma.202400364","url":null,"abstract":"In enhancing the lifespan of anode-free Li metal batteries (AFLMBs), current collector (CC) engineering is crucial for achieving uniform and dendrite-free lithium deposition. The commonly used copper (Cu) CC is unsatisfactory because of its poor lithiophilicity. Here, we consider Zn doping on the Cu CC surface (Zn−Cu) and explore the reductive stability of a high-concentration electrolyte (HCE), consisting of 3.6 M Lithium Hexafluorophosphate (LiPF6) salt in a mixture of ethylene carbonate (EC) and diethylcarbonate (DEC), on the Zn−Cu (111) surface (HCE|Zn−Cu) using density functional theory (DFT) and ab initio molecular dynamics (AIMD) simulations. The interfacial reactions in the HCE|Zn−Cu system are compared to those on the pristine Cu (111) surface (HCE|Cu). We have also studied the effect of electron-rich environments on the decomposition mechanism of the HCE mixture on both the CC surfaces. It is found that the HCE mixture is electrochemically stable on both Cu and Zn−Cu surfaces in a neutral environment. However, under electron-rich conditions, only one DEC molecule has decomposed upon contact with the Cu CC surface, while the two PF6− anion groups from Li salts have decomposed much faster (within 100 fs) when the HCE mixture interacts with the Zn−Cu surface. Our results indicate that Zn doping suppresses undesirable solvent decomposition and improves the quality of the solid electrolyte interphase (SEI) layer.","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"10 12","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142862067","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