Journal of nanoscience and nanotechnology最新文献_第7页

Electromagnetic Interference Shielding Effectiveness of Room Temperature Fabricated Manganese Dioxide/Carbon Dots Nanocomposites. 室温制备二氧化锰/碳点纳米复合材料的电磁干扰屏蔽性能。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19473

Jayanta Mondai, Suneel Kumar Srivastava

{"title":"Electromagnetic Interference Shielding Effectiveness of Room Temperature Fabricated Manganese Dioxide/Carbon Dots Nanocomposites.","authors":"Jayanta Mondai, Suneel Kumar Srivastava","doi":"10.1166/jnn.2021.19473","DOIUrl":"https://doi.org/10.1166/jnn.2021.19473","url":null,"abstract":"The present work is focused on the fabrication of manganese dioxide/carbon dots (MnO₂/CDs) nanocomposites at room temperature in situ co-participation method in an aqueous medium and characterized. Our study showed that the concentration of CDs controls the morphology of MnO₂/CDs nanocomposite and also acted as a reducing agent to convert potassium permanganate (KMnO₄) to MnO₂. Subsequently, nanoflowers, quasi-spherical particles, broken, and interconnected chain type of morphology was observed by adding dispersion of 0.5, 1.0, 1.5, and 2.0 ml CDs in acetone to 1 mmol KMnO₄ aqueous solution in the corresponding MnO₂/CDs-0.5, MnO₂/CDs-1.0, MnO₂/CDs-1.5, and MnO₂/CDs-2.0 composites, respectively. A plausible mechanism on the transformation of morphology of MnO₂/CDs with CDs concentration is also provided. Further, the present work also focused for the first time on the application in the electromagnetic interference (EMI) shielding of MnO₂/CD nanocomposites due to the high dielectric and conductivity. Interestingly, MnO₂/CDs-2.0 (nanochains) exhibited the highest total EMI shielding efficiency (SET) of ~39.4 dB following reflection as dominant shielding mechanism due to the high aspect ratio, highest conductivity, high dielectric loss, and impendence mismatch.","PeriodicalId":16417,"journal":{"name":"Journal of nanoscience and nanotechnology","volume":"21 11","pages":"5542-5555"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38974943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Work Function Modulation of Few-Layer Graphene by Swift Heavy Ion Irradiation. 快速重离子辐照调制少层石墨烯的功函数。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19470

P K Kasana, Jyoti Shakya, Tanuja Mohanty

引用次数: 0

Preparation and Characterization of Mg Doped ZnAI₂O₄Spinel Nanoparticles. 镁掺杂ZnAI₂O₄尖晶石纳米颗粒的制备与表征。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19478

P Sakthivel, R Jothi Ramalingam, D Pradeepa, S Rathika, Chandra Sekhar Dash, K Bhuvaneswari, M Sundararajan, Partha Sarathi Subudhi, Hamad Al-Lohedan

{"title":"Preparation and Characterization of Mg Doped ZnAI₂O₄Spinel Nanoparticles.","authors":"P Sakthivel, R Jothi Ramalingam, D Pradeepa, S Rathika, Chandra Sekhar Dash, K Bhuvaneswari, M Sundararajan, Partha Sarathi Subudhi, Hamad Al-Lohedan","doi":"10.1166/jnn.2021.19478","DOIUrl":"https://doi.org/10.1166/jnn.2021.19478","url":null,"abstract":"In the present study, combustion technique is adopted to study the impact of Mg2+ ion doping on ZnAI₂O₄ nanoparticles (NPs). L-arginine is used as a fuel component. The Mg2+ ions play a pivotal role in persuading various characteristics of ZnAI₂O₄ NPs. Various characterization technqiues such as Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX), high resolution scanning electron microscopy (HR-SEM), diffuse reflectance spectroscopy (DRS), Thermo-gravimetric/differential thermal analysis (TG-DTA) and vibrating sample magnetometer (VSM) were carried out in order to synthesize the nanoparticles. Single phase cubic spinel structure of ZnAl₂O₄ (gahnite) formation was confirmed from the XRD characterization process of the nanoparticles. Estimated average crystallite size range of 11.85 nm to 19.02 nm was observed from Debye-Scherrer. Spherical morphology with uniform distributions was observed from HR-SEM characterization images. From the band gap studies, the attained band gap values were found to lie within 5.41 eV-4.66 eV range. The ZnAl₂O₄ and Mg:ZnAl₂O₄ NPs exhibited super-paramagnetic nature confirmed by magnetic measurements. The obtained results make ZnAl₂O ₄and Mg:ZnAl₂O₄ NPs appropriate for various optical, catalytic, energy and data storage applications.","PeriodicalId":16417,"journal":{"name":"Journal of nanoscience and nanotechnology","volume":"21 11","pages":"5659-5665"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38893161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Facile Synthesis of Nido-Carborane Polymers via Dynamic Self-Assembly by Poly(carboxybetaine methacrylate). 聚甲基丙烯酸羧酸甜菜碱动态自组装法快速合成奈多-碳硼烷聚合物。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19483

Zhou Wang

{"title":"A Facile Synthesis of Nido-Carborane Polymers via Dynamic Self-Assembly by Poly(carboxybetaine methacrylate).","authors":"Zhou Wang","doi":"10.1166/jnn.2021.19483","DOIUrl":"https://doi.org/10.1166/jnn.2021.19483","url":null,"abstract":"Carborane are widely applied in boron neutron capture therapy (BNCT) field, but it is difficult to perform biocompatibility with cells due to its own water solubility differences, so how to solve the water solubility problem has always been the focus of research. A simple, inexpensive and effective method was used to study the synthesis of nido-carborane azaspirodecanium poly(carboxybetaine methacrylate) by one-pot cyclization of nido-carborane azaspirodecanium under the synergistic effect of inorganic bases and conventional organic solvents. Its characterization is mainly to use 1H-NMR nuclear magnetic resonance spectrum and infrared spectroscopy to determine the characteristic peak and range of borane. Through transmission electron microscope (TEM), it can be observed that the white nanoparticles, namely carborane, are completely contained by polymer ions, which not only increases the surface area but also the concentration of boron uptake in the cell is 100 times that of borono-phenylalanine (BPA). Based on the successful synthesis of N-CB5-4 and N-CB6-5 without harsh conditions, a feasibility point of view was put forward, namely, super water-soluble carborane polymer.","PeriodicalId":16417,"journal":{"name":"Journal of nanoscience and nanotechnology","volume":"21 11","pages":"5681-5687"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38905201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoscale Phase Separation in Ternary Organic Solar Cells Based on PTB7:PC₇₀BM:IC₇₀BA. 基于PTB7:PC70BM:IC70BA的三元有机太阳能电池纳米级相分离。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19493

Chang Li, Wei Li, Xiaoxiang Sun, Jifei Wang, Jiayou Tao, Zhijun Zou, Gaohua Liao, Xinchang Zou, Jian Ni, Jianjun Zhang

{"title":"Nanoscale Phase Separation in Ternary Organic Solar Cells Based on PTB7:PC70BM:IC70BA.","authors":"Chang Li, Wei Li, Xiaoxiang Sun, Jifei Wang, Jiayou Tao, Zhijun Zou, Gaohua Liao, Xinchang Zou, Jian Ni, Jianjun Zhang","doi":"10.1166/jnn.2021.19493","DOIUrl":"https://doi.org/10.1166/jnn.2021.19493","url":null,"abstract":"As a fullerene derivative, IC70BA is widely used in the ternary organic solar cells (TOSCs) to increase the open circuit voltage (Voc) of the devices. Unfortunately, most of the literature shows that IC70BA will lead to a reduction in the short-circuit current density (Jsc) and fill factor (FF). In this work, IC70BA is added to the PTB7:PC70BM binary system to form the ternary system, which is composed of one donor and two fullerene acceptors. Surprisingly, the addition of IC70BA does not immediately lead to a decrease in Jsc and FF. In fact, the appropriate weight ratio of IC70BA in fullerenes can simultaneously increase the Voc, Jsc, and FF of the TOSCs. The synergistic optimization of the surface and bulk morphology of the ternary active layer suppresses the attenuation of Jsc and FF. The smooth surface and suitable phase separation size effectively guarantee the separation, transport and extraction of the charge. Moreover, the addition of IC70BA can significantly improve the hole transport capacity of the active layer, and the optimal hole mobility is 5.13 - 10\"4 cm²V-1S-1. Finally, the TOSCs with 10% weight ratio of IC70BA gives the optimal PCE of 9.24% and ideality factor of 2.3.","PeriodicalId":16417,"journal":{"name":"Journal of nanoscience and nanotechnology","volume":"21 11","pages":"5749-5755"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38973734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fe₃O4@MCM@ZrCI₂: A Practical Magnetic Mesoporous Zirconium-Based Nanocomposite as a Reusable Catalyst for the Synthesis of Spirooxindoles. Fe₃O4@MCM@ZrCI₂:一种实用的磁性介孔锆基纳米复合材料作为可重复使用的催化剂用于合成螺霉吲哚。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19495

Reyhaneh Pourhasan-Kisomi, Mostafa Golshekan, Farhad Shirini

引用次数: 2

Influence of Alkalinization Over Metal Organic Frameworks MIL-100(Fe) for Enhanced Volatile Organic Compounds (VOCs) Adsorbents. 碱化对金属有机骨架MIL-100(Fe)对挥发性有机化合物(voc)吸附剂的影响

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19474

Xinyu Xie, Joy Thomas, Chang-Tang Chang, Hong Tao

{"title":"Influence of Alkalinization Over Metal Organic Frameworks MIL-100(Fe) for Enhanced Volatile Organic Compounds (VOCs) Adsorbents.","authors":"Xinyu Xie, Joy Thomas, Chang-Tang Chang, Hong Tao","doi":"10.1166/jnn.2021.19474","DOIUrl":"https://doi.org/10.1166/jnn.2021.19474","url":null,"abstract":"Substantial attempts have been undertaken for the improvement of the air quality over decades; and Volatile Organic Compounds (VOCs) from the chemical and textile industries are truly listed as severe issue to be controlled. To come up with modus operandi for this issue, a novel composite of metal organic frameworks (MOFs) MIL-100(Fe) with salient tuned features of natrite was designed by a green and facile method. Mineralized composite MOFs exhibited enhanced crystallinity than pure MIL-100(Fe) as well showcased a higher surface area of 1300 m² g-1. Through dynamic acetone pressure swing adsorption setup, MIL-0.05Na (MIL-100(Fe) synthesized with 0.05 mM Na₂CO₃ solution) revealed an enhanced acetone adsorption of 210 mg g 1 at room temperature. Gas phase adsorption isotherms confirmed the mono layer adsorption behavior. The kinetics models evaluated that the external mass transfer was the rate limiting step for surface adsorption. The thermodynamic study manifested that the adsorption reaction was spontaneous and exothermic. The proposed mechanism of adsorption was the act of physisorption which enriched the adsorbents reusability. This research work provides a futuristic vista to design mineralized Fe-MOFs composites for an energy saving adsorbents for VOCs removal.","PeriodicalId":16417,"journal":{"name":"Journal of nanoscience and nanotechnology","volume":"21 11","pages":"5510-5521"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38975553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Silver Abietate and β-Cyclodextrin Inclusion Complex Doped Poly(vinyl alcohol) Nanowebs. 皂化银和β-环糊精包合物掺杂聚乙烯醇纳米网。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19451

Aylin Yildiz, A Ozgur Agirgan, Derman Vatansever Bayramol, Ugur Ergunay, Riza Atav

引用次数: 1

Fe-Doped Graphitic Carbon Nitride for Methylene Blue Degradation with Visible-Light. 可见光下掺铁石墨氮化碳降解亚甲基蓝的研究。

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19487

Mao-Juan Bai, Xuan-Ye Huang, Han Yin, De-Li N U, Jun Wan

引用次数: 5

Upshot of Concentration of Zirconium (IV) Oxynitrate Hexa Hydrate on Preparation and Analyses of Zirconium Oxide (ZrO₂) Nanoparticles by Modified Co-Precipitation Method. 六水合硝酸氧锆(IV)浓度对修饰共沉淀法制备氧化锆(ZrO₂)纳米粒子的影响及分析

Journal of nanoscience and nanotechnology Pub Date : 2021-11-01 DOI: 10.1166/jnn.2021.19488

M Ramachandran, R Subadevi, P Rajkumar, R Muthupradeepa, R Yuvakkumar, M Sivakumar

{"title":"Upshot of Concentration of Zirconium (IV) Oxynitrate Hexa Hydrate on Preparation and Analyses of Zirconium Oxide (ZrO₂) Nanoparticles by Modified Co-Precipitation Method.","authors":"M Ramachandran, R Subadevi, P Rajkumar, R Muthupradeepa, R Yuvakkumar, M Sivakumar","doi":"10.1166/jnn.2021.19488","DOIUrl":"https://doi.org/10.1166/jnn.2021.19488","url":null,"abstract":"In the present work, pure nanocrystalline monoclinic Zirconia (ZrO₂) has been successfully synthesized and optimized by the modified co-precipitation method. The concentration of raw material has been optimized with the fixed amount of precipitation agent (Potassium hydroxide KOH). The thermal history of the precursor has been examined through TG/DTA analysis. All the samples are subjected to study the structure, fingerprints of the molecular vibrations, and morphology analyses. The representative sample has been analyzed through Transmission Electron Microscope (TEM) and X-ray Photo Electron Spectroscopy (XPS) analyses. The as-prepared sample exhibits the better crystallinity and surface morphology with lesser particle size (190 nm) when the raw material concentration is 0.2 M. The as-prepared ZrO₂ filler (0, 3, 6, 9, and 12 wt.%) is spread through the enhanced polymer electrolyte P(S-MMA) (27 Wt.%)-LiClO₄ (8 wt.%)-EC + PC (1;1 of 65 wt.%) complex system via solution casting method. The as-synthesized electrolyte films are examined via complex impedance analysis. P(S-MMA) (27 wt.%)-LiCIO₄ (8 wt.%)-EC + PC (1 ;1 of 65 wt.%)-6 wt.% of ZrO₂ shows the high ionic conductivity 2.35 × 10-3 Scm-1. Temperature-dependent ionic conductivity studies obey the non-linear behavior. The enhanced ZrO₂ has been expected to enhance the other electrochemical properties of the lithium secondary battery.","PeriodicalId":16417,"journal":{"name":"Journal of nanoscience and nanotechnology","volume":"21 11","pages":"5707-5713"},"PeriodicalIF":0.0,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"38905205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2