نتایج جستجو برای: energy dispersive xray spectroscopy eds

تعداد نتایج: 844518  

2018
Yanan Chen Dong An Sainan Sun Jiayi Gao Linping Qian

Cr adsorption on wood-based powdered activated carbon (WPAC) was characterized by scanning electron microscopy coupled with energy dispersive spectroscopy (SEM-EDS), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The highest Cr(VI) adsorption (40.04%) was obtained under acidic conditions (pH 3), whereas Cr removal at pH 10 was only 0.34%. The mechanism of Cr(VI) removal from aq...

2012
Lawrence R. Robinson David R. Cornblath Erik V. Stålberg Benjamin S. Warfel

2016
C. Rodenbücher M. Luysberg A. Schwedt V. Havel F. Gunkel J. Mayer R. Waser

The homogeneity of Verneuil-grown SrTiO3:Nb crystals was investigated. Due to the fast crystal growth process, inhomogeneities in the donor dopant distribution and variation in the dislocation density are expected to occur. In fact, for some crystals optical studies show variations in the density of Ti(3+) states on the microscale and a cluster-like surface conductivity was reported in tip-indu...

Journal: :international journal of nanoscience and nanotechnology 2015
m. najafi h. haratizadeh

europium (eu) doped zno microsphere based nano-sheets were synthesized through hydrothermal method. effects of different concentrations of europium on structural and optical properties of zno nano-sheets were investigated in detail. prepared un-doped and eu-doped zno samples were characterized using x-ray diffraction (xrd), energy dispersive x-ray spectroscopy (edx), scanning electron microscop...

2005
S. Mogo V. E. Cachorro A. M. de Frutos

Morphological, chemical and optical absorbing characterization of aerosols in the urban atmosphere of Valladolid S. Mogo, V. E. Cachorro, and A. M. de Frutos Grupo de Óptica Atmosférica, Universidad de Valladolid, Valladolid, Spain Dep. de Fı́sica, Universidade da Beira Interior, Covilhã, Portugal Received: 28 February 2005 – Accepted: 20 April 2005 – Published: 13 June 2005 Correspondence to: S...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2007
S Glasgow M Meilstrup J Peatross M Ware

We discuss the recoverable and irrecoverable energy densities associated with a pulse at a point in the propagation medium and derive easily computed expressions to calculate these quantities. Specific types of fields are required to retrieve the recoverable portion of the energy density from the point in the medium, and we discuss the properties that these fields must have. Several examples ar...

Journal: :international journal of nano dimension 0
saeed farhadi department of chemistry, lorestan university, khoramabad 68135-465, iranسازمان اصلی تایید شده: دانشگاه لرستان (lorestan university) gholamali nadri department of chemistry, lorestan university, khoramabad 68135-465, iranسازمان اصلی تایید شده: دانشگاه لرستان (lorestan university) masoumeh javanmard department of chemistry, lorestan university, khoramabad 68135-465, iranسازمان اصلی تایید شده: دانشگاه لرستان (lorestan university)

in this paper, an energetic coordination compound namely pentamminenitratocobalt(iii) nitrate, [co(nh3)5(no3)](no3)2, was used as a new precursor for the preparation of co3o4 nanoparticles. the results showed that the complex is easily decomposed into the co3o4 nanoparticles at low temperature (200 °c) without employing a surfactant or solvent and any complicated equipment. the product was char...

Journal: :analytical and bioanalytical chemistry research 0
zahra hassanzadeh siahpoosh imam khomeini international university (ikiu), qazvin, iran majid soleimani imam khomeini international university (ikiu), qazvin, iran

this article presents the method of extraction-preconcentration of lead, cadmium, and nickel ions from food samples using the ghezeljeh montmorillonite nanoclay (geleh-sar-shoor) as a new native adsorbent in batch single component systems. the extraction-preconcentration of heavy metals were carried out by applying the solid phase extraction (spe) method followed by atomic absorption spectrosco...

2018
Huamin Liu Wenchi Pan Kuo Huang Yan Liu Jiaan Liu

The present work investigates the compressive property of Al matrix composite foams at different temperatures between room temperature and 200 ◦C. Elevated temperature results in a decreased compressive strength and energy absorption capacity of as-received Al foams. Therefore, to maintain the compressive property, the Al2O3 ceramic coating was deposited on the Al struts of the foams by the pla...

Journal: :Bioresource technology 2012
Roland D Cusick Bruce E Logan

An energy efficient method of concurrent hydrogen gas and struvite (MgNH(4)PO(4)·6H(2)O) production was investigated based on bioelectrochemically driven struvite crystallization at the cathode of a single chamber microbial electrolysis struvite-precipitation cell (MESC). The MESC cathodes were either stainless steel 304 mesh or flat plates. Phosphate removal ranged from 20% to 40%, with higher...

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