scholarly journals Synthesis of Micro/nano Urchin-like VO2 Particles and Its Decolorization of Methylene Blue

2019 ◽  
Vol 35 (3) ◽  
Author(s):  
Nguyen The Manh ◽  
Duong Hong Quan ◽  
Vu Thi Ngoc Minh ◽  
Vuong Pham Hung
Keyword(s):  
Methylene Blue ◽  
Sodium Dodecyl ◽  
Adsorption Properties ◽  
Contaminated Water ◽  
Potential Applications ◽  
Synthesis Procedure ◽  
Water Treatments ◽  
Sds Surfactant ◽  
Mb Adsorption

Micro/nano urchin-like VO2 particles were synthesized successfully by hydrothermal method. Vanadium pentoxide (V2O5), oxalic acid (C2H2O4) and sodium dodecyl sulfate (SDS) surfactant were used as reagents for the synthesis of VO2. In this article, we have reported the synthesis procedure of VO2 nanorods and micro/nano urchin-like VO2 structure and evaluating the methylene blue (MB) adsorption properties. Morphology and particle size of VO2 were observed by FE-SEM. The phase formation of VO2 was studied by XRD. Raman spectroscopy was also used for characterization of VO2. Micro/nano urchin-like VO2 structure was showed good MB adsorption properties that have potential applications in dye-contaminated water treatments.

Synthesis and characterization of lignosulfonate/amino-functionalized SBA-15 nanocomposites for the adsorption of methylene blue from wastewater

2020 ◽  
Vol 44 (6) ◽  
pp. 2291-2302 ◽  
Author(s):  
Mohamed Abboud ◽  
Taher Sahlabji ◽  
Mohammad Abu Haija ◽  
Adel A. El-Zahhar ◽  
Samir Bondock ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Synthesis And Characterization ◽  
Adsorption Study ◽  
Mb Adsorption

The synthesis, characterization, and methylene blue (MB) adsorption study of a new lignosulfonate/amino-functionalized SBA-15 nanocomposite are described.

Preparation and Photoactive Characterization of Tube-shaped Al-doped ZnO Ceramics.

2002 ◽  
Vol 737 ◽  
Author(s):  
Yoshinobu Fujishiro ◽  
M. Awano ◽  
S. Kanzaki
Keyword(s):  
Sodium Dodecyl ◽  
Molar Ratio ◽  
Homogeneous Precipitation ◽  
Zno Particles ◽  
Doped Zno ◽  
Conductive Properties ◽  
Photo Decomposition ◽  
Sds Surfactant ◽  
Zno Ceramics

ABSTRUCT:Tubular Al-doped ZnO particles were prepared by homogeneous precipitation in the mixed solutions of Al(NO3)2, Zn(NO3)2, sodium dodecyl sulfate (SDS) surfactant and urea. At the molar ratio of Metal ions(Mt) : SDS : urea : H2O is 1 : 2 : 20 : 60, tubular products formed by heating at 80°C for 12 h. Plate like ZnO particles were obtained at Mt : SDS : urea : H2O = 1 : 2 : 10 : 60 or 1 : 1 : 20 : 60. The diameter of typical ZnO tube is ca.100 nm, and the length of tube is about 600nm (aspect ratio = 6). The relative surface area of tubular Al-doped ZnO is ca. 40.2 m2/g. The photo-decomposition rate of NO3- ions using tubular Al-doped ZnO particles was higher than standard TiO2 photo-catalysts (P-25) by irradiation >290nm light in 10mM KNO3-10vol%EtOH solutions at 30°C. The obtained materials showed DC conductive properties as compacted substrate by sintered at 400°C.

Isolation and partial characterization of an Escherichia coli mutant resistant to colicin A

1975 ◽  
Vol 21 (10) ◽  
pp. 1595-1601 ◽  
Author(s):  
Marc Lavoie ◽  
Leo G. Mathieu
Keyword(s):  
Escherichia Coli ◽  
Methylene Blue ◽  
Parent Strain ◽  
General Pattern ◽  
Sodium Dodecyl ◽  
Triphenyltetrazolium Chloride ◽  
E Coli ◽  
Receptor Sites ◽  
Acridine Dyes

An Escherichia coli K12 mutant resistant to colicin A-CA31 apparently through loss of its receptor sites has been isolated and partially characterized. Resistance to colicin A was accompanied with a decreased sensitivity to colicins L-398 and E2-CA42, and to acridine dyes. The mutant strain displayed the same general pattern of tolerance or sensitivity as the parent strain towards eight antibiotics, colicins C, D, E1, E3, F2, F3, G, I, K, and N; phages T1, T2, T5, T6, T7, F2, λ vir, P1kc, [Formula: see text] 80, and BF23; and to methylene blue, triphenyltetrazolium chloride, ethylene-diaminetetraacetate (EDTA), deoxycholate, and sodium dodecyl sulfate. Conjugation and transduction experiments showed that a locus controlling resistance to colicin A-CA31 mapped at 21 min on the genetic map of this E. coli K12 strain.

scholarly journals Synthesis of Ag-Fe3O4 nanoparticles for degradation of methylene blue in aqueous medium

2020 ◽  
Vol 34 (1) ◽  
pp. 123-134
Author(s):  
Muhammad Saeed ◽  
Muhammad Usman ◽  
Majid Muneer ◽  
Nadia Akram ◽  
Atta ul Haq ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Ag Nanoparticles ◽  
Active Catalyst ◽  
Precipitation Method ◽  
Contaminated Water ◽  
Synthetic Method ◽  
Photo Degradation ◽  
Photo Catalytic Activity

Fe3O4 known as magnetite is one of the oxides of iron which plays a major role in various fields of sciences. Fe3O4 was synthesized by precipitation method using NH3.H2O, FeCl2.4H2O and FeCl3.6H2O as precursor materials. For synthesis of 5% Ag-Fe3O4, the green synthetic method was used for immobilization of Ag nanoparticles on Fe3O4 using leaves extract of Calotropis gigantea plant. The synthesized Fe3O4 and 5% Ag-Fe3O4 were employed as catalyst in degradation of methylene blue. The photo catalytic activity of Fe3O4 was remarkably enhanced by doping of Fe3O4 with Ag nanoparticles. Advanced instrumental techniques including XRD, EDX, TGA and SEM were used for characterization of synthesized particles. The immobilization of Ag on Fe3O4 enhanced the photo degradation of methylene blue from 40 to 72% at 40 °C which confirms that 5% Ag-Fe3O4 is an active catalyst for treatment of dye contaminated water. Ag-Fe3O4 exhibited almost same catalytic activity in two successive cycles.   Bull. Chem. Soc. Ethiop. 2020, 34(1), 123-134.  DOI: https://dx.doi.org/10.4314/bcse.v34i1.11

Electron Microscope Study of RNA's of Paramyxoviruses

1972 ◽  
Vol 30 ◽  
pp. 196-197
Author(s):  
Ruchama Baum ◽  
J.T. Seto
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Electron Microscope Study ◽  
Sendai Virus ◽  
Sodium Dodecyl ◽  
Rna Molecules ◽  
Virus Particles ◽  
Molecular Weights ◽  
Length Measurements

The ribonucleic acid (RNA) of paramyxoviruses has been characterized by biochemical and physiochemical methods. However, paramyxovirus RNA molecules have not been studied by electron microscopy. The molecular weights of these single-stranded viral RNA molecules are not known as yet. Since electron microscopy has been found to be useful for the characterization of single-stranded RNA, this investigation was initiated to examine the morphology and length measurements of paramyxovirus RNA's.Sendai virus Z strain and Newcastle disease virus (NDV), Milano strain, were used. For these studies it was necessary to develop a method of extracting RNA molecules from purified virus particles. Highly purified Sendai virus was treated with pronase (300 μg/ml) at 37°C for 30 minutes and the RNA extracted by the sodium dodecyl sulfate (SDS)-phenol procedure.

scholarly journals Effect of Deposition Parameters on Electrochemical Properties of Polypyrrole-Graphene Oxide Films

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 624 ◽  
Author(s):  
Alina Iuliana Pruna ◽  
Nelly Ma. Rosas-Laverde ◽  
David Busquets Mataix
Keyword(s):  
Cyclic Voltammetry ◽  
Graphene Oxide ◽  
Electrochemical Properties ◽  
Sodium Dodecyl ◽  
Hybrid Coatings ◽  
Deposition Parameters ◽  
Structure Morphology ◽  
Energy Storage Applications ◽  
Improved Performance ◽  
Sds Surfactant

Graphene oxide (GO)-modified polypyrrole (PPy) coatings were obtained by electrochemical methods in the presence of the anionic surfactant, sodium dodecyl sulfate (SDS). The structure, morphology, and electrochemical properties of the coatings were assessed by Fourier transform infrared (FTIR) spectroscopy, Raman spectroscopy, scanning electron microscopy (SEM) and cyclic voltammetry at varying scan rates, respectively. The properties of the obtained coatings were analyzed with the GO and PPy loadings and electrodeposition mode. The hybrid coatings obtained galvanostatically showed a coarser appearance than those deposited by cyclic voltammetry CV mode and improved performance, respectively, which was further enhanced by GO and PPy loading. The capacitance enhancement can be attributed to the SDS surfactant that well dispersed the GO sheets, thus allowing the use of lower GO content for improved contribution, while the choice of suitable electrodeposition parameters is highly important for improving the applicability of GO-modified PPy coatings in energy storage applications.

scholarly journals Synthesis and Characterization of Novel Castor Oil-Based Polyol for Potential Applications in Coatings

2019 ◽  
Vol 7 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Azam Sardari ◽  
Ali Asghar Sabbagh Alvani ◽  
Seyed Reza Ghaffarian
Keyword(s):  
Castor Oil ◽  
Synthesis And Characterization ◽  
Potential Applications
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