Synthesis and X-ray characterization of antipyrine-tethered organosilanes and their magnetic nanoparticles: potent anti-oxidants and receptors for Sn(ii) ions

2020 ◽  
Vol 44 (35) ◽  
pp. 15157-15168
Author(s):  
Gurjaspreet Singh ◽  
Suman ◽  
Pinky Satija ◽  
Akshpreet Singh ◽  
Shilpy ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Material Science ◽  
X Ray ◽  
Potential Applications

This study focuses on the synthesis and X-ray characterization of antipyrine-tethered organosilanes for their potential applications in the fields of material science, pharmaceuticals and chemosensing.

Study on Synthesis and Characterization of AgCl Microparticle Materials Based on One-Step Solution Phase Route

2012 ◽  
Vol 568 ◽  
pp. 295-298
Author(s):  
Juan Liao ◽  
Kai Zhang ◽  
Wen Zhong Wang ◽  
Yong Gang Wang ◽  
Li Yu
Keyword(s):  
Reaction Times ◽  
Average Diameter ◽  
Solution Phase ◽  
Synthesis And Characterization ◽  
Sem Images ◽  
X Ray ◽  
Potential Applications ◽  
One Step ◽  
Size And Morphology

AgCl microparticle materials, with novel heart-like morphology, were successfully prepared by means of a simple solution phase route, in which a small amount of hydrochloric acid, ethylene and PVP were introduced to the conventional polyol process. The obtained microparticle materials were characterized by scanning electron microscopy (SEM), X-ray powder diffraction (XRD), and UV-Vis absorption spectrum. SEM images show that the obtained AgCl microparticle materials have heart-like morphology with an average diameter of 3 um. The influence of different reaction times on size and morphology of the microparticle materials were also investigated. A possible growth mechanism of AgCl microparticle materials has been proposed on the basis of experimental results and analysis. The as-prepared AgCl microparticle materials would find possible potential applications in photocatalytic fields.

Synthesis and Characterization of Fe/Nd2O3 Core–Shell Nanoparticles by Hydrogen Plasma-Metal Reaction

2006 ◽  
Vol 6 (3) ◽  
pp. 743-747 ◽  
Author(s):  
Tong Liu ◽  
Shicheng Zhang ◽  
Xingguo Li
Keyword(s):  
Hydrogen Plasma ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
X Ray ◽  
Nanoparticle Surface ◽  
Transmission Electron ◽  
Potential Applications ◽  
Catalytic Fields ◽  
Core Shell Nanoparticles

Fe/Nd2O3 core–shell nanoparticles (CSNs) with a mean diameter of 35 nm were produced successfully by using hydrogen plasma-metal reaction (HPMR) method. This core–shell structure was confirmed by high resolution transmission electron microscopy (HRTEM), energy dispersion X-ray spectroscopy (EDS), X-ray photoelectron spectral (XPS), and induction-coupled plasma (ICP) spectroscopy. The magnetic properties were measured by vibrating sample magnetometer (VSM). It was found that the mole ratio of Nd to Fe on the nanoparticle surface is 1.2:1, about 7 times of that of the whole nanoparticle. The saturation magnetization Ms and remanence Mr of Fe/Nd2O3 nanoparticles decrease prominently from Fe nanoparticles, whereas the coercivity HC drops only less than 5% of Fe nanoparticle. These CSNs have potential applications in magnetic and catalytic fields.

Synthesis and Characterization of Magnetic Nanoparticles using polyvinylpirrolidone as stabilizer

MRS Advances ◽  
2017 ◽  
Vol 2 (49) ◽  
pp. 2769-2773
Author(s):  
Morales P. Patricio ◽  
Moncayo H. José María ◽  
García R. Miguel ◽  
Santoyo S. Jaime
Keyword(s):  
Magnetic Nanoparticles ◽  
X Ray Diffraction ◽  
Scanning Microscope ◽  
X Ray ◽  
Iron Salts ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Coprecipitation Technique ◽  
Electron Scanning Microscope

ABSTRACTMagnetic nanoparticles were obtained by chemical coprecipitation technique from aqueous solutions of iron salts, the synthesis was carried out in an alkaline medium, obtaining magnetic nanoparticles of around 2-10 nm in size. The nanoparticles obtained were stabilized with polyvinylpirrolidone (PVP), the particle size was measured by transmission electron microscopy (TEM), the crystal structure of the magnetic nanoparticles obtained was verified by X-ray diffraction (DRX). The chemical composition of the nanoparticles powder was investigated using electron scanning microscope with energy dispersive X-ray spectroscopy (EDX) equipment. Optical properties as absorption was studied by UV-Vis spectroscopy.

Synthesis and Characterization of Metal and Semiconductor Nanowires

2013 ◽  
Vol 201 ◽  
pp. 21-64 ◽  
Author(s):  
Hardev Singh Virk
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Anodic Alumina ◽  
X Ray ◽  
Tunneling Diode ◽  
Laboratory Characterization ◽  
Potential Applications ◽  
Dual Source ◽  
Scanning Electron

One-dimensional nanowires (NWs) have attracted considerable attention in recent years because of their novel physical properties and potential applications as interconnects in nanometre-scale electronics. NWs have potential applications in nanoscale electronics, optoelectronics, photonics, sensors, and solar cells due to their unique electrical, chemical, and optical properties. Several chemical and physical methods are commonly used to produce NWs. Among them, electrochemical synthesis and vapour-liquid-solid (VLS) methods to produce NWs have become popular among scientific workers due to a number of advantages. Synthesis of NWs using anodic alumina and polymer templates in an electrochemical cell has been described in detail as investigated in our laboratory. Characterization of metal and semiconductor NWs has been accomplished using scanning electron microscope (SEM), field emission scanning electron microscope (FESEM), high resolution transmission microscope (HRTEM), X-ray diffraction (XRD), and energy dispersive X-ray analysis (EDAX). Morphology of NWs has been revealed by SEM, structure by TEM, crystallinity by XRD and chemical composition by EDAX. I-V characteristics of copper and semiconductor NWs were recorded in-situ, as grown in pores of anodic alumina template, using Dual Source Meter (Keithley Model 4200 SCS) with platinum probes for contacts. Resonating tunneling diode (RTD) characteristics of fabricated NWs have been investigated. Bulk production of Copper NWs has been described by seed growth technique. Applications of NWs are not covered in any detail under this review. Table of Contents

scholarly journals Perspective: Ferromagnetic Liquids

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2712 ◽  
Author(s):  
Robert Streubel ◽  
Xubo Liu ◽  
Xuefei Wu ◽  
Thomas P. Russell
Keyword(s):  
Surface Tension ◽  
Magnetic Properties ◽  
Magnetic Nanoparticles ◽  
Remanent Magnetization ◽  
Recent Progress ◽  
Liquid Interfaces ◽  
Spin Frustration ◽  
Future Directions ◽  
Potential Applications

Mechanical jamming of nanoparticles at liquid–liquid interfaces has evolved into a versatile approach to structure liquids with solid-state properties. Ferromagnetic liquids obtain their physical and magnetic properties, including a remanent magnetization that distinguishes them from ferrofluids, from the jamming of magnetic nanoparticles assembled at the interface between two distinct liquids to minimize surface tension. This perspective provides an overview of recent progress and discusses future directions, challenges and potential applications of jamming magnetic nanoparticles with regard to 3D nano-magnetism. We address the formation and characterization of curved magnetic geometries, and spin frustration between dipole-coupled nanostructures, and advance our understanding of particle jamming at liquid–liquid interfaces.

Development of a hybrid metal-oxides (Li2O-Al2O3-Al3Fe-Al3Fe5O12) reinforced polycaprolactone composite

MRS Advances ◽  
2019 ◽  
Vol 4 (63) ◽  
pp. 3485-3493
Author(s):  
N.N. Zurita-Méndez ◽  
J. Beltran-González ◽  
G. Carbajal-De la Torre ◽  
M.A. Espinosa-Medina
Keyword(s):  
Lithium Aluminum Hydride ◽  
Polymer Network ◽  
Aluminum Hydride ◽  
Lithium Aluminum ◽  
X Ray Diffraction ◽  
X Ray ◽  
Potential Applications ◽  
Nanometric Particles ◽  
Irregular Topography

ABSTRACTThis paper addresses the chemical synthesis and characterization of a composite formed by Li2O-Al2O3-Al3Fe-Al3Fe5O12/PCL which were obtained by the process of reduction of ferric chloride (FeCl3) with lithium aluminum hydride (LiAlH4) in an open atmosphere. The goal of the development of this hybrid material was to perform a superparamagnetic material with several potential applications. The results of the characterizations by scanning electron microscopy (SEM) and vibrating sample magnetometer showed a Li2O-Al2O3-Al3Fe-Al3Fe5O12 “desert rose stone”-like morphology 3D hierarchical powders formation when particles were sintered at 850 °C. Homogeneous nanometric particles after calcination at 1100 °C were observed. X-ray diffraction analysis were performed to determine their composition. Subsequently, the superparamagnetic powders were added by dispersion in a polycaprolactone (PCL) matrix, and then, were evaluated by SEM for the observation of their morphologies. The composite material presented a polymer network with an opened structure, a well dispersion of the oxides particles into the interstices with irregular topography and reliefs.

Preparation and Characterization of Ag-Deposited Silica-Coated Fe3O4 Magnetic Nanoparticles with Recycling Antibacterial Properties

2014 ◽  
Vol 1061-1062 ◽  
pp. 256-261
Author(s):  
Peng Xu ◽  
Shao Wei ◽  
Jing Yang ◽  
Yi Xi Che ◽  
Xiao Yong Cao ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Escherichia Coli ◽  
Transmission Electron Microscopy ◽  
Magnetic Nanoparticles ◽  
Antibacterial Properties ◽  
Magnetic Core ◽  
X Ray ◽  
Bacterial Agent ◽  
Transmission Electron

In this paper, a novel anti-bacterial agent of Ag-deposited silica-coated Fe3O4 magnetic nanoparticles was prepared by a template-activated strategy, which possess a silica coated magnetic core and silver nanoparticles on the outer shell. The as-synthesized nanoparticles have been characterized by transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX). The obtained products exhibited dispersibility and high magnetization, which also show a good recycling antibacterial activity, and the antibacterial rates against Escherichia coli was all 100 % for 3 cycles.

Synthesis and Characterization of Copper-Iron Nitride Thin Films

MRS Advances ◽  
2015 ◽  
Vol 1 (3) ◽  
pp. 203-208 ◽  
Author(s):  
Hrishikesh Kamat ◽  
Xingwu Wang ◽  
James Parry ◽  
Yueling Qin ◽  
Hao Zeng
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Iron Nitride ◽  
X Ray Diffraction ◽  
Copper Nitride ◽  
X Ray ◽  
Structure Morphology ◽  
Layer Stacking ◽  
Potential Applications

ABSTRACTIron nitride thin films have potential applications in the biomedicine and energy. The magnetic properties of these films can be tuned by incorporating copper nitride. In this study, iron copper nitride thin films have been fabricated by magnetron sputtering technique either by co-sputtering iron nitride and copper nitride or by layer stacking of the materials. The structure, morphology and magnetic properties of the films have been studied by scanning electron microscopy, x-ray diffraction, x-ray reflectivity and vibrating sample magnetometry.

scholarly journals Preparation and Characterization of Few Layered MoS2 Nano Flakes

2019 ◽  
Vol 8 (2S3) ◽  
pp. 146-148
Keyword(s):  
Layered Materials ◽  
Transition Metal Dichalcogenide ◽  
Two Dimensional ◽  
Thermal And Mechanical Properties ◽  
X Ray Diffraction ◽  
Molybdenum Disulphide ◽  
X Ray ◽  
Potential Applications ◽  
Layered Mos2

Two dimensional layered materials have become a prominent area of current research and development due to the significant properties exhibited by them. Exploiting graphene's layered structure have led to the property enhancement and thereby making it a good candidate for potential applications. MoS2 (Molybdenum disulphide), a transition metal dichalcogenide possess exceptional electrical, thermal and mechanical properties which can be well exploited on exfoliation. The present work report the exfoliation of pristine MoS2. The layers of pristine MoS2 are held together by weak van der Waals interaction, which is disturbed by the addition of a suitable modifier facilitating the exfoliation process. The modifier treated MoS2 is elucidated by powder X-ray diffraction, Photoluminesence and Raman spectroscopy

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