A study of the interaction of silver with amorphous chalcogenide films in the Scanning Electron Microscope

1990 ◽  
Vol 48 (4) ◽  
pp. 694-695
Author(s):  
A.G. Fitzgerald ◽  
S.M. Potrous
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Cross Sections ◽  
Photoelectron Spectroscopy ◽  
Depth Profiling ◽  
X Ray ◽  
Chalcogenide Films ◽  
Transmission Electron ◽  
Amorphous Chalcogenides ◽  
Scanning Electron

The diffusion of silver in amorphous chalcogenides is the basis for high-resolution lithographic applications. Previous studies of the diffusion of silver on contact with chalcogenide films has been studied by Auger depth profiling and the effects of photodoping on chemical bonding have been studied by x-ray photoelectron spectroscopy. Electron lithographic effects have been studied in the transmission electron microscope.The objective of the investigation described here has been to determine the degree of diffusion of silver in the amorphous chalcogenides, As2S3, As2Se3, GeS and GeSe when these films are in contact with thin silver films. The silver distribution has been determined by x-ray microanalysis of film cross-sections in the scanning electron microscope (SEM). Electron beam induced conductivity (EBIC) at points in these films has also been investigated.

Co(OH)2 ELECTROCATALYST DECORATED ON TiO2 FILM FOR ENHANCED PHOTOELECTROCATALYTIC WATER OXIDATION

2020 ◽  
Vol 27 (11) ◽  
pp. 2050003
Author(s):  
HONGXIA LI ◽  
CHAO YANG ◽  
JIAN ZHANG ◽  
XIANGUO LIU ◽  
XUEFENG ZHANG
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Water Splitting ◽  
Transmission Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Water Oxidation ◽  
Low Cost ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

Recently, Co(OH)2 has gained much attention as a promising electrocatalyst. Herein, we synthesized Co(OH)2-decorated TiO2 film for electrocatalytic water splitting by a facile and low-cost electrochemistry method, which possessed enhanced performance for oxygen evolution reaction. The results of X-ray diffractometry, transmission electron microscope, scanning electron microscope and X-ray photoelectron spectroscopy verify the successful decoration of Co(OH)2 electrocatalysts onto the surface of TiO2. Moreover, photoelectrocatalytic measurements illustrate that the Co(OH)2-decorated TiO2 shows higher current density than pure TiO2 sample. The results obtained in this work give deep insights into the development of photoelectrochemical water splitting.

scholarly journals SEM imaging and XPS characterization of doped PVDF fibers

2021 ◽  
Vol 270 ◽  
pp. 01011
Author(s):  
Tereza Smejkalová ◽  
Ştefan Ţălu ◽  
Rashid Dallaev ◽  
Klára Částková ◽  
Dinara Sobola ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Analytical Methods ◽  
Polyvinylidene Fluoride ◽  
X Ray ◽  
Xps Characterization ◽  
Good Biocompatibility ◽  
The Individual ◽  
Scanning Electron

Polyvinylidene fluoride (PVDF) is one of the most promising electroactive polymers; it exhibits excellent electroactive behaviours, good biocompatibility, excellent chemical resistance, and thermal stability, rendering it an attractive material for biomedical, electronic, environmental and energy harvesting applications. This work aims to further improve its properties by the inclusion of powders of piezoactive materials. Polyvinylidene fluoride was formed by electrospinning into fibres with a thickness of 1.5-0.3 µm and then examined in a scanning electron microscope. The work offers a description of the current procedure in the preparation of samples and their modification for examination in a scanning electron microscope, characterizes the individual components of doped fibres and deals with specific instruments used for various analytical methods. The work contains a theoretical introduction to the analytical methods to which the samples will be further subjected, such as energy dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS). The obtained excellent properties of doped PVDF could be used in the design of sensors.

Fabrication of g-C3N4/Y-TiO2 Z-scheme heterojunction photocatalysts for enhanced photocatalytic activity

2021 ◽  
Author(s):  
SongSik Pak ◽  
KwangChol Ri ◽  
Chenmin Xu ◽  
Qiuyi Ji ◽  
Dunyu Sun ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Photocatalytic Activity ◽  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

The g-C3N4/Y-TiO2 Z-scheme heterojunction photocatalysts were successfully synthesized. The powder X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscope, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy were used for...

Fast and Simple Fabrication of RGO/Ag Nanocomposite with Homogenous Dispersion

2013 ◽  
Vol 328 ◽  
pp. 674-678
Author(s):  
Xiao Juan Jiang ◽  
Guo Qiang Luo ◽  
Mei Juan Li ◽  
Qiang Shen ◽  
Lian Meng Zhang
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Transmission Electron Microscope ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Chemical Reduction Method ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

The RGO/Ag nanocomposite with a homogeneous dispersion of Ag on the surface of RGO has been successfully prepared via situ chemical reduction method using DMF (dimethylformamide) as solvent and reducing agent. The RGO/Ag nanocomposite was characterized by X-ray diffractometer (XRD), Fourier transform-infrared (FTIR) spectra, Fieldemission scanning electron microscope (FESEM) and transmission electron microscope (TEM). It is suggested that in the presence of the PVP (polyvinylpyrrolidone), the electrostatic attraction of Ag+ions with negative GO sheets lead to the decoration of Ag nanoparticles on the surface of RGO sheets in RGO/Ag nanocomposite.

scholarly journals A Fenton-Like Nanocatalyst Based on Easily Separated Magnetic Nanorings for Oxidation and Degradation of Dye Pollutant

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 332 ◽  
Author(s):  
Xiaonan Li ◽  
Jinghua Li ◽  
Weilu Shi ◽  
Jianfeng Bao ◽  
Xianyuan Yang
Keyword(s):  
Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Organic Dyes ◽  
Reaction Medium ◽  
Bromophenol Blue ◽  
Vibrating Sample Magnetometer ◽  
X Ray ◽  
Transmission Electron ◽  
Considerable Loss ◽  
Scanning Electron

In this study, uniform Fe3O4 magnetic nanorings (Fe3O4-MNRs) were prepared through a simple hydrothermal method. The morphology, magnetic properties, and structure of the product were characterized by transmission electron microscope (TEM), scanning electron microscope (SEM), high resolution transmission electron microscopy (HRTEM), vibrating sample magnetometer (VSM), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), respectively. The Fe3O4-MNRs were used as Fenton-like catalysts in the presence of hydrogen peroxide (H2O2) and showed excellent Fenton-catalytic activity for degradation of organic dyes such as Methylene blue (MB), Rhodamine B (RhB), and Bromophenol blue (BPB). Furthermore, the obtained Fe3O4-MNRs could be recycled after used for several times and still remained in a relative high activity and could rapidly be separated from the reaction medium using a magnet without considerable loss. All results reveal that Fe3O4-MNRs have potential for the treatment of dyes pollutants.

scholarly journals Hybrid Ag2O/ZnO Heterostructures

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Jing Wang ◽  
Yang Liu ◽  
Yang Jiao ◽  
Fengyu Qu ◽  
Qingzhi Pan ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Powder Diffraction ◽  
Growth Mechanism ◽  
Spectroscopy Analysis ◽  
X Ray ◽  
Transmission Electron ◽  
Step Procedure ◽  
Intrinsic Emission ◽  
Scanning Electron

The well-aligned Ag2O/ZnO microflowers heterostructure was synthesized by a straightforward two-step procedure. The diameters of the as-synthesized products were as much as 1.5 μm. The as-grown Ag2O/ZnO heterostructure was investigated by X-ray powder diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and photoluminescence (PL) spectroscopy analysis. A possible growth mechanism for flowerlike Ag2O/ZnO heterostructure was proposed based on the experimental results. Compared with pure ZnO microflowers, PL spectrum of the composite with only one strong peak at 383 nm showed good intrinsic emission.

Direct growth of Mn0.6Ni0.4CO3 nanosheet assembles on Ni foam for high-performance supercapacitor electrodes

2022 ◽  
Author(s):  
RongMin Cheng ◽  
Conghong Zhan ◽  
Juanjuan Gao
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Powder Diffraction ◽  
High Performance ◽  
Ni Foam ◽  
X Ray ◽  
Transmission Electron ◽  
Direct Growth ◽  
Calcination Treatment ◽  
Scanning Electron

Using Ni foam as a template, Mn0.6Ni0.4CO3 nanosheet assembles were synthesized by hydrothermal method and calcination treatment. X-ray powder diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), Inductively...

Synthesis of Polyceriborosilazane via Substitution and Polymerization and Pyrolysis to SiBCN(Ce) Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 894-897
Author(s):  
Si Hui Wang ◽  
He Yun Wang ◽  
Fan Xing Meng ◽  
Ya Li Li
Keyword(s):  
Fourier Transform ◽  
Electron Microscope ◽  
High Temperature ◽  
Scanning Electron Microscope ◽  
Photoelectron Spectroscopy ◽  
Chemical Structure ◽  
X Ray ◽  
Metal Atoms ◽  
Functional Ceramics ◽  
Scanning Electron

Abstract: The introduction of metal atoms into SiBCN network allows the development of novel high temperature ceramics and functional ceramics. In this work, cerium (Ce) containing polyborosilazane (PBSZ) is synthesized through substitution and polymerization reactions. Ce atoms are incorporated into PBSZ through the lithium replacement of H in PBSZ followed by Ce replacement of lithium. The chemical structure of the PBSZ and as-synthesized Li containing PBSZ are analyzed by Fourier transform infrared (FTIR) shows that the bands at 598 and 1183 cm-1 which can be assigned to Li-N and Si-N-Li stretching. It is suggested that lithium is incorporated into PBSZ. PBSZCe is transformed into SiBCNCe ceramic by pyrolysed in argon. Scanning electron microscope shows that the SiBCNCe ceramics are porous on the surface and corallike in the section. The chemical bondings of SiBCNCe ceramics are BN, the BN, SiC and Si3N4 characterized by X-ray photoelectron spectroscopy.

X-Ray Emission of Porous Materials In The Scanning Electron Microscope Computed Using Monte Carlo Simulations

1997 ◽  
Vol 3 (S2) ◽  
pp. 883-884 ◽  
Author(s):  
Raynald Gauvin
Keyword(s):  
Monte Carlo ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Monte Carlo Simulations ◽  
Porous Materials ◽  
Cross Sections ◽  
Quantitative Methods ◽  
Electron Trajectories ◽  
X Ray ◽  
Scanning Electron

Conventional quantitative X-ray microanalysis in the scanning electron microscope or in the electron microprobe is valid for specimens of bulk homogeneous composition and with flat and polished surfaces. Quantitative methods, using X-ray microanalysis and Monte Carlo simulations of electron trajectories in solids, have been developed for the chemical analysis of spherical inclusions embedded in a matrix and for multilayered specimens. In this paper, the effect of porosity and of the size of the pores are investigated concerning their effect on X-ray emission using Monte Carlo simulation of electron trajectories in solids since porous materials are of great technological importance.This new Monte Carlo program uses elastic Mott cross-sections to compute electron trajectories and the Joy & Luo modification of the continuous Bethe law of energy loss and the details are given elsewhere. This program assumes that all the pores are spherical and have the same size.

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