SEM

warad's picture

Synthesis of Nano-sized Sulfur Nanoparticles and their Antibacterial Activities

Journal Title, Volume, Page: 
J. Mater. Environ. Sci; 6(2):513
Year of Publication: 
2015
Authors: 
Ismail Warad
Department of Chemistry, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Motasem Al-Masri
Department of biology and biotechnology, An-Najah National University, Nablus, Palestine
Diaa Aref
Department of Chemistry, An-Najah National University, Nablus, Palestine
Mohammed Suleiman
Department of Chemistry, An-Najah National University, Nablus, Palestine
Anas Al Ali
Department of Chemistry, An-Najah National University, Nablus, Palestine
Ayman Hussein
Faculity of Medicine, An-Najah National University, Nablus, Palestine
Iyad Saadeddin
Department of Physics, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 

Sulfur nanoparticles (S-NPs) were prepared in this work by precipitation method using sodium thiosulphate and tetraoctylammonium bromide surfactants in conc. hydrochloric acid media. The sizes and shapes of S-NPs were confirmed by scanning electron microscope (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques. Broth micro-dilution method was applied to determine antibacterial activity of S-NPs against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa reference strains. S-NPs exhibited antimicrobial activity (MIC = 5.47µg/ml) against Staphylococcus aureus strain (Gram-positive bacterium). On the other hand, no antimicrobial activity was detected against Gram-negative bacteria isolates (Escherichia coli and Pseudomonas aeruginosa) at 0.68 to 800 µg/ml.

ayman's picture

Synthesis of Nano-sized Sulfur Nanoparticles and their Antibacterial Activities

Authors: 
Anas Al Ali
Department of Chemistry, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Biomedical Sciences, Faculty of Medicine & Health Sciences, An-Najah National University, Nablus, Palestine
Motasem Al-Masri
Department of biology and biotechnology, An-Najah National University, Nablus, Palestine
Diaa Aref
Department of Chemistry, An-Najah National University, Nablus, Palestine
Anas Al Ali
Department of Chemistry, An-Najah National University, Nablus, Palestine
Iyad Saadeddin
Department of Physics, An-Najah National University, Nablus, Palestine
Ismail Warad
Department of Chemistry, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 

Sulfur nanoparticles (S-NPs) were prepared in this work by precipitation method using sodium thiosulphate and tetraoctylammonium bromide surfactants in conc. hydrochloric acid media. The sizes and shapes of S-NPs were confirmed by scanning electron microscope (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques. Broth micro-dilution method was applied to determine antibacterial activity of S-NPs against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa reference strains. S-NPs exhibited antimicrobial activity (MIC = 5.47µg/ml) against Staphylococcus aureus strain (Gram-positive bacterium). On the other hand, no antimicrobial activity was detected against Gram-negative bacteria isolates (Escherichia coli and Pseudomonas aeruginosa) at 0.68 to 800 µg/ml.

motasem's picture

Synthesis of Nano-sized Sulfur Nanoparticles and their Antibacterial Activities

Journal Title, Volume, Page: 
J. Mater. Environ. Sci; 6(2):513
Year of Publication: 
2015
Authors: 
Motasem Al-Masri
Department of biology and biotechnology, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Biology and Biotechnology, Faculty of Science, An-Najah National University, Nablus, Palestine
Diaa Aref
Department of Chemistry, An-Najah National University, Nablus, Palestine
Mohammed Suleiman
Department of Chemistry, An-Najah National University, Nablus, Palestine
Anas Al Ali
Department of Chemistry, An-Najah National University, Nablus, Palestine
Ayman Hussein
Faculity of Medicine, An-Najah National University, Nablus, Palestine
Iyad Saadeddin
Department of Physics, An-Najah National University, Nablus, Palestine
Ismail Warad
Department of Chemistry, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 

Sulfur nanoparticles (S-NPs) were prepared in this work by precipitation method using sodium thiosulphate and tetraoctylammonium bromide surfactants in conc. hydrochloric acid media. The sizes and shapes of S-NPs were confirmed by scanning electron microscope (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques. Broth micro-dilution method was applied to determine antibacterial activity of S-NPs against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa reference strains. S-NPs exhibited antimicrobial activity (MIC = 5.47µg/ml) against Staphylococcus aureus strain (Gram-positive bacterium). On the other hand, no antimicrobial activity was detected against Gram-negative bacteria isolates (Escherichia coli and Pseudomonas aeruginosa) at 0.68 to 800 µg/ml.

iyad's picture

Synthesis of Nano-sized Sulfur Nanoparticles and their Antibacterial Activities

Journal Title, Volume, Page: 
J. Mater. Environ. Sci 02/2015; 6(2):513
Year of Publication: 
2015
Authors: 
Mohammed Suleiman
Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
Motasem Al-Masri
Department of Biology and Biotechnology, Faculty of Science, An-Najah National University, Nablus, Palestine
Anas Al Ali
Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
Diaa Aref
Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
Iyad Saadeddin
Department of Physics, Faculty of Sciences, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Physics, Faculty of Sciences, An-Najah National University, Nablus, Palestine
Ismail Warad
Department of Chemistry, An-Najah National University, P. O. Box 7, Nablus, Palestine
Ayman Hussein
Department of Pharmacy, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 

Sulfur nanoparticles (S-NPs) were prepared in this work by precipitation method using sodium thiosulphate and tetraoctylammonium bromide surfactants in conc. hydrochloric acid media. The sizes and shapes of S-NPs were confirmed by scanning electron microscope (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) techniques. Broth micro-dilution method was applied to determine antibacterial activity of S-NPs against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa reference strains. S-NPs exhibited antimicrobial activity (MIC = 5.47µg/ml) against Staphylococcus aureus strain (Gram-positive bacterium). On the other hand, no antimicrobial activity was detected against Gram-negative bacteria isolates (Escherichia coli and Pseudomonas aeruginosa) at 0.68 to 800 µg/ml.

iyad's picture

Modification of n-Si Characteristics by Annealing and Cooling at Different Rates

Journal Title, Volume, Page: 
Active and Passive Electronic Components Volume 26 (2003), Issue 4, Pages 213-230
Year of Publication: 
2003
Authors: 
Iyad A. Sa'deddin
College of Sciences, An-Najah N. University, P.O. Box 7, Nablus, Palestine
Current Affiliation: 
Department of Physics, Faculty of Science, An-Najah National University, Palestine
Subhi K. Salih
Department of Physics, Faculty of Sciences, An-Najah National University, Palestine
Hikmat S. Hilal
College of Sciences, An-Najah N. University, P.O. Box 7, Nablus, Palestine
Elisabeth Sellier
Institut de Chimie de la Matiere Condensee de Bordeaux du CNRS, Chateau Brivazac, avenue du Dr. A. Schweitzer, Pessac 33608, France
Guy Campet
Institut de Chimie de la Matiere Condensee de Bordeaux du CNRS, Chateau Brivazac, avenue du Dr. A. Schweitzer, Pessac 33608, France
Preferred Abstract (Original): 

The effect of annealing of the n-Si semiconductor on its characteristics in photoelectrochemical systems has been investigated. The annealing improved the dark current density vs. potential plots. The surface was improved by annealing, as manifested by SEM results. The effect of the cooling rate on preheated n-Si wafers was also investigated. It was found that the slowly cooled electrodes gave better dark current density vs. potential plots,for samples annealed at lower than 550°C. For samples annealed at higher temperatures, quenching gave better dark-current density vs. potential plots. SEM measurements showed parallel results to these findings. Enhanced surface textures were observed for slowly cooled wafers from temperatures below 550°C. Samples quenched from temperatures above 550°C showed better surfaces than slowly cooled counterparts.

warad's picture

Copper(II)-Oxide Nanostructures: Synthesis, Characterizations and their Applications–Review

Journal Title, Volume, Page: 
J. Mater. Environ. Sci. 4 ( 5 ) (2013) 792 - 797 SSN : 2028 - 2508 CODEN: JMESCN
Year of Publication: 
2013
Authors: 
Mohammed Suleiman
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Current Affiliation: 
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Muath Mousa
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Amjad Hussein
Medical Laboratory Sciences Department, AN-Najah National University, Nablus, State of Palestine
Belkheir Hammouti
LCAE-URAC18, Faculty of Sciences, University Mohammed Ier, Oujda-60000, Morocco
Taibi B. Hadda
Laboratoire LCM, Faculty of Sciences, University Mohammed 1er, Oujda-60000, Morocco
Ismail Warad
Department of Chemistry, Faculty of Science, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 
Several successfully methods to prepare Copper(II)-oxide (Cu=O) nanostructures with different sizes and shapes and their applied in different man daily life applications were investigated in this study. This paper discusses different Cu=O nanostructures synthesis methods and their characterization as well as their applications. The pulsed wire explosion method of synthesis was discussed in detail.
subhisaleh's picture

Modification of n-Si Characteristics by Annealing and Cooling at Different Rates

Journal Title, Volume, Page: 
Active and Passive Electronic Components Volume 26 (2003), Issue 4, Pages 213-230, doi:10.1080/0882751031000116124
Year of Publication: 
2003
Authors: 
Subhi K. Salih
Department of Physics, Faculty of Sciences, An-Najah National University, Palestine
Current Affiliation: 
Department of Physics, Faculty of Sciences, An-Najah National University, Palestine
Hikmat S. Hilal
College of Sciences, An-Najah N. University, P.O. Box 7, West Bank, Palestinian Authority
Iyad A. Sa'deddin
College of Sciences, An-Najah N. University, P.O. Box 7, West Bank, Palestinian Authority
Elisabeth Sellier
Institut de Chimie de la Matiere Condensee de Bordeaux du CNRS, Chateau Brivazac, avenue du Dr. A. Schweitzer, Pessac 33608, France
Guy Campet
Institut de Chimie de la Matiere Condensee de Bordeaux du CNRS, Chateau Brivazac, avenue du Dr. A. Schweitzer, Pessac 33608, France
Preferred Abstract (Original): 

The effect of annealing of the n-Si semiconductor on its characteristics in photoelectrochemical systems has been investigated. The annealing improved the dark current density vs. potential plots. The surface was improved by annealing, as manifested by SEM results. The effect of the cooling rate on preheated n-Si wafers was also investigated. It was found that the slowly cooled electrodes gave better dark current density vs. potential plots,for samples annealed at lower than 550°C. For samples annealed at higher temperatures, quenching gave better dark-current density vs. potential plots. SEM measurements showed parallel results to these findings. Enhanced surface textures were observed for slowly cooled wafers from temperatures below 550°C. Samples quenched from temperatures above 550°C showed better surfaces than slowly cooled counterparts.

Hikmat S. Hilal's picture

Modification of n-Si Characteristics by Annealing and Cooling at Different Rates

Journal Title, Volume, Page: 
Active And Passive Electronic Components Volume 26 (2003), Issue 4, Pages 213-230
Year of Publication: 
2003
Authors: 
Hikmat S. Hilal
College of Sciences, An-Najah N. University, P.O. Box 7, West Bank, Palestinian Authority
Current Affiliation: 
Department of Chemistry, Najah N. University, P. O. Box 7, Nablus, West Bank, Palestine
Subhi K. Salih
College of Sciences, An-Najah N. University, P.O. Box 7, West Bank, Palestinian Authority
Iyad A. Sa'deddin
College of Sciences, An-Najah N. University, P.O. Box 7, West Bank, Palestinian Authority
Elisabeth Sellier
Institut de Chimie de la Matiere Condensee de Bordeaux du CNRS, Chateau Brivazac, avenue du Dr. A. Schweitzer, Pessac 33608, France
Guy Campet
Institut de Chimie de la Matiere Condensee de Bordeaux du CNRS, Chateau Brivazac, avenue du Dr. A. Schweitzer, Pessac 33608, France
Preferred Abstract (Original): 

The effect of annealing of the n-Si semiconductor on its characteristics in photoelectrochemical systems has been investigated. The annealing improved the dark current density vs. potential plots. The surface was improved by annealing, as manifested by SEM results. The effect of the cooling rate on preheated n-Si wafers was also investigated. It was found that the slowly cooled electrodes gave better dark current density vs. potential plots, for samples annealed at lower than 550°C. For samples annealed at higher temperatures, quenching gave better dark-current density vs. potential plots. SEM measurements showed parallel results to these findings. Enhanced surface textures were observed for slowly cooled wafers from temperatures below 550°C. Samples quenched from temperatures above 550°C showed better surfaces than slowly cooled counterparts.

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