Synthesis, Characterization and the Growth Formation of Spindle-Like CdS Nanostructures

2011 ◽  
Vol 412 ◽  
pp. 159-162
Author(s):  
Shu Ling Liu ◽  
Qiang Qiang Shi ◽  
Jian Bo Tong ◽  
Shu Li ◽  
Miao Miao Li
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Optical Property ◽  
Blue Shift ◽  
Solvothermal Process ◽  
X Ray ◽  
One Step ◽  
Cds Nanostructures ◽  
Growth Formation ◽  
Scanning Electron

Spindle-like CdS structures were successfully synthesized via a simple one-step solvothermal process. The as-prepared products were characterization by X-ray powder diffractometer (XRD), scanning electron microscopy (SEM), and UV-vis absorption spectroscopy (UV-vis). By discussing the captive indimediates, the formation process of the spindle-like CdS structure was proposed as the splitting and the Oswald growth mechanism. The optical property of the as-prepared CdS showed obvious blue shift relative to the bulk CdS materials.

Solvothermal Synthesis and Electrochemical Properties of Hairball-Like Bismuth Trisulphide Microcrystallines

2011 ◽  
Vol 233-235 ◽  
pp. 2289-2293
Author(s):  
Pin Jiang Li ◽  
Wen Jun Fa ◽  
Yan Ge Zhang ◽  
Bao Jun Huang ◽  
Yi Dong Zhang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Solvothermal Synthesis ◽  
Growth Process ◽  
Solvothermal Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
One Step ◽  
Scanning Electron

Hairball-like bismuth trisulphide microcrystallines has been successfully prepared via one step solvothermal process and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and high-resolution transmission electron microscopy (HRTEM) techniques. The morphologies of the Bi2S3 microcrystallines were influenced by reaction time, temperature, the mole ratio of the reactants and concentration of starting materials, and the growth process has been proposed. The electrochemical behavior of Bi2S3 was investigated using the cyclic voltammetry.

Controlled Synthesis, Mechanism and Degradation Property of Birnessite-MnO2 Nanoflowers and Nanoflakes

2021 ◽  
Vol 21 (9) ◽  
pp. 4846-4851
Author(s):  
Xin-Li Hao ◽  
Yue-Hong Song ◽  
Lin-Yi Li ◽  
Lu-Feng Li ◽  
Shuo-Shuo Chang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Optical Property ◽  
Controlled Synthesis ◽  
Synthesis Mechanism ◽  
Oxidation Method ◽  
X Ray ◽  
Aqueous Oxidation ◽  
Degradation Properties ◽  
Scanning Electron

Birnessite-MnO2 nanoflakes were synthesized via an aqueous oxidation method at 90 °C using Mn(CH3COO)2, NaOH, and KMnO4. The samples’ morphology, crystalline structure, and optical property were determined by field emission scanning electron microscopy, X-ray powder diffraction and UV-Vis spectrophotometry. The birnessite-MnO2 nanoflakes were converted to KxMn8O16 and Mn suboxides following a decrease in the concentration of KMnO4 in the reaction. The amount of NaOH in the reaction determined the type of precursor. Without NaOH, the precursor was converted from Mn(OH)2 to Mn2+ (from Mn(CH3COO)2), thereby enabling the synthesis of birnessite-MnO2 nanoflowers. The formation mechanism of birnessite-MnO2 nanoflowers and nanoflakes was clarified via the corresponding simulated crystal structures. Evaluation of the synthesized samples confirmed that the birnessite-MnO2 nanoflakes and nanoflowers exhibited excellent degradation properties.

Effects of Reductive Conditions on the Electrochemical Properties of LiFePO4/C Derived by Fe3+ Sources

2014 ◽  
Vol 1081 ◽  
pp. 313-317
Author(s):  
Yan Wen Lu ◽  
Yu Ge ◽  
Yue Feng Tang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Raw Materials ◽  
Thermal Method ◽  
X Ray Diffraction ◽  
Sintering Atmosphere ◽  
X Ray ◽  
Electrochemical Capacity ◽  
One Step ◽  
Scanning Electron

A one-step carbon thermal method was used to prepare LiFePO4/C particles by using normal Fe2O3, LiH2PO4and sucrose as raw materials. The effect of H2content in the sintering atmosphere of N2on the morphology and the electrochemical performance were investigated. LiFePO4/C materials were characterized by X-ray diffraction, scanning electron microscopy and the elemental analyzer. The results show that the precursor sintering under the atmosphere of 8%H2+N2exhibits the highest electrochemical capacity (162.3 mAh/g at 0.1C) .

scholarly journals Effect of Surfactant on Growth of ZnO Nanodumbbells and Their Characterization

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Sunil Babu Eadi ◽  
Sungjin Kim ◽  
Soon Wook Jeong
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Anionic Surfactant ◽  
Sodium Dodecyl ◽  
Controlled Synthesis ◽  
X Ray Diffraction ◽  
X Ray ◽  
One Step ◽  
Morphology Changes ◽  
Scanning Electron

We report the controlled synthesis of dumbbell shaped ZnO micro/nanostructures using anionic surfactant sodium dodecyl sulphate (SDS) by simple one-step hydrothermal method. The morphology changes of ZnO were characterized by using scanning electron microscopy, X-ray diffraction, and energy dispersive spectroscopy. It is found that the size of the dumbbell increased with increase in concentration of SDS. Systematic growth mechanism with increase of concentration of SDS polymer is studied. Our results will help in the growing face selective ZnO for many functional applications.

Hydrothermal Synthesis of 3D Flower-Like Bismuth Trisulphide Microcrystallines

2013 ◽  
Vol 634-638 ◽  
pp. 2207-2210 ◽  
Author(s):  
Pin Jiang Li ◽  
Yan Ge Zhang ◽  
Bao Jun Huang ◽  
Chen Yu ◽  
Ling Zhuge ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Hydrothermal Synthesis ◽  
Hydrothermal Process ◽  
X Ray Diffraction ◽  
Structure Directing Agent ◽  
X Ray ◽  
Laser Raman ◽  
One Step ◽  
Scanning Electron

3D flower-like bismuth trisulphide microcrystallines has been successfully prepared via one step hydrothermal process and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and laser Raman spectrometer techniques. The morphologies of the Bi2S3 microcrystallines were influenced by the surfactant Na2(EDTA), which acts as a structure directing agent.

One-Step Hydrothermal Controlled Synthesis of HgTe Nanorods

2013 ◽  
Vol 303-306 ◽  
pp. 2667-2670
Author(s):  
Kun Peng Jiang ◽  
Li Jiang ◽  
Lei Liao ◽  
Wei Ping Yu ◽  
Ai Miao Qin ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Surface Roughness ◽  
Hydrothermal Synthesis ◽  
Controlled Synthesis ◽  
X Ray ◽  
Transition Electron Microscopy ◽  
One Step ◽  
Transition Electron ◽  
Scanning Electron

This paper describes a one-step hydrothermal synthesis of rod-shaped HgTe nanocrystals (NCs). X-ray powder diffraction (XRD), field scanning electron microscopy (FE-SEM), transition electron microscopy (TEM) and energy-dispersive X-ray analysis (EDX) have been used to characterize the HgTe NCs. The length, diameter, surface roughness and the aspect ratio of the HgTe nanorods are well controlled through Te precursor, reaction time and reductant.

scholarly journals Blends of Polyimides and Their Morphology

2016 ◽  
Vol 6 (1) ◽  
pp. 17
Author(s):  
Saule Kudaikulova ◽  
Galina Boiko ◽  
Bulat Zhubanov ◽  
N. Ashurov ◽  
Sh. Sodykov ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Functional Groups ◽  
Polymer Matrix ◽  
Single Step ◽  
Aromatic Diamines ◽  
X Ray ◽  
One Step ◽  
Scanning Electron

The formulation of macromolecular blends on the basis of polyimides using one step catalytic polycyclocondensation is reported. Polymers with active functional groups (polyacrylamide, polycaproamide) have been suggested as catalysts for the reaction of alicyclic dianhydrides with aromatic diamines in protolytic medium. Films made from macromolecular blends of synthesized polymers have been investigated by X-ray diffractometry and scanning electron microscopy. It has been shown that single step formation of polyimide on the polymer matrix presents the possibility to prepare thin structured disperse blends in comparison with simple mixing of homopolymers.

scholarly journals One-Step Thermolysis Synthesis of Divalent Transition Metal Ions Monodoped and Tridoped CdS and ZnS Luminescent Nanomaterials

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
S. E. Saeed ◽  
M. M. S. Abdel-Mottaleb ◽  
M. S. A. Abdel-Mottaleb
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Average Diameter ◽  
Transition Metal Ions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
One Step ◽  
Fundamental Research ◽  
Scanning Electron

Mn2+, Co2+, or Ni2+monodoped CdS (or ZnS) and Mn2+-Co2+-Ni2+tridoped CdS (or ZnS) have been successfully synthesized by novel one-step thermolysis method using thiourea as a sulphur source. The synthesized nanomaterials were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). It is found that the average diameter and morphology of the synthesized samples varied with the nature of dopant ion. The successful doping of Mn2+-Co2+-Ni2+tridoped ions into the host CdS (or ZnS) was proved by the EDX spectra. The luminescence of CdS is only enhanced when monodoped with Mn2+whereas it is enhanced when ZnS is either monodoped with Mn2+, Co2+, or Ni2+or tridoped with Mn2+-Co2+-Ni2+. The synthesized samples could therefore offer opportunities for further fundamental research and technological applications.

Identification of calcium oxalate crystals in dried or fixed tobacco leaf

1984 ◽  
Vol 42 ◽  
pp. 288-289
Author(s):  
Vicki L. Baliga ◽  
Mary Ellen Counts
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Calcium Oxalate ◽  
Growth And Development ◽  
Polarized Light ◽  
Calcium Oxalate Crystals ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

Calcium is an important element in the growth and development of plants and one form of calcium is calcium oxalate. Calcium oxalate has been found in leaf seed, stem material plant tissue culture, fungi and lichen using one or more of the following methods—polarized light microscopy (PLM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and x-ray diffraction.Two methods are presented here for qualitatively estimating calcium oxalate in dried or fixed tobacco (Nicotiana) leaf from different stalk positions using PLM. SEM, coupled with energy dispersive x-ray spectrometry (EDS), and powder x-ray diffraction were used to verify that the crystals observed in the dried leaf with PLM were calcium oxalate.

Scanning Electron Microscopy and X-Ray Analyses of Dental Tissues from a Hibernator

1976 ◽  
Vol 34 ◽  
pp. 178-179
Author(s):  
M. L. Zimny ◽  
A. C. Haller
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Body Temperature ◽  
Ground Squirrel ◽  
Alveolar Bone ◽  
X Ray ◽  
Dental Tissues ◽  
Bone Minerals ◽  
Apical Tooth ◽  
Scanning Electron

During hibernation the ground squirrel is immobile, body temperature reduced and metabolism depressed. Hibernation has been shown to affect dental tissues varying degrees, although not much work has been done in this area. In limited studies, it has been shown that hibernation results in (1) mobilization of bone minerals; (2) deficient dentinogenesis and degeneration of alveolar bone; (3) presence of calculus and tears in the cementum; and (4) aggrevation of caries and pulpal and apical tooth abscesses. The purpose of this investigation was to study the effects of hibernation on dental tissues employing scanning electron microscopy (SEM) and related x-ray analyses.

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