Preparation and Characterization of Zeolite\Zinc Oxide-Copper Oxide Nanocomposite: Antibacterial Activities

ABSTRACTWith the recent terrorist attacks in Paris and the continued use of IED’s employing TATP for delivering these threats, there is a real need for explosives detection at trace levels. This work describes the fabrication and characterization of metal oxide nanowires used as catalysts for the detection of energetic materials at trace levels. Recently, several oxide nanowires, based on zinc oxide and copper oxide, have been incorporated into our solid-state gas sensors as catalysts. These nanowire catalysts produced a dramatic increase in sensor response with improved selectivity for threat molecules of interest. The improved responses were attributed to a large increase in surface area available for catalyst/analyte interaction. Zinc oxide and copper oxide nanowires were grown by hydrothermal and controlled oxidation reactions, and were characterized using XRD, XPS and SEM to determine extent of crystallinity, oxidation state and morphology. Results indicated that energetic materials such as TATP and 2-6 DNT could be detected at the part per billion level using these nanowire catalysts. Other oxide nanowires are being considered as catalysts for the detection of explosives and are discussed as well.

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Synthesis and characterization of Copper oxide and Zinc Oxide nanomaterials

Nature of Scientific Materials ◽

10.24909/nosm2016111.4 ◽

2016 ◽

Vol 1 (1) ◽

pp. 18-22 ◽

Cited By ~ 1

Author(s):

Bruno Chandrasekar L ◽

Chandramohan R ◽

Karunakaran M ◽

Vijayalakshmi R

Keyword(s):

Zinc Oxide ◽

Copper Oxide ◽

Synthesis And Characterization

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Formation and Study of Thin-Film Structures Based on Copper Oxide and Zinc Oxide, Obtained by a Reaction Magnetron Sputtering Technique for Applying in Solar Power Engineering

Vestnik of Volga State University of Technology Ser Radio Engineering and Infocommunication Systems ◽

10.15350/2306-2819.2017.3.69 ◽

2017 ◽

Vol 3 (35) ◽

Author(s):

Dmitry Shashin ◽

Sergey Stepanov ◽

Nikolay Sushentsov

Keyword(s):

Thin Film ◽

Zinc Oxide ◽

Magnetron Sputtering ◽

Copper Oxide ◽

Solar Power ◽

Power Engineering ◽

Solar Power Engineering

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Chemical Constituents and Antibacterial Activity of Cissus Aralioides.

Letters in Organic Chemistry ◽

10.2174/1570178617999200609130127 ◽

2020 ◽

Vol 17 ◽

Author(s):

Balogun Olaoye Solomon ◽

Ajayi Olukayode Solomon ◽

Owolabi Temitayo Abidemi ◽

Oladimeji Abdulkarbir Oladele ◽

Liu Zhiqiang

Keyword(s):

Plant Extract ◽

Chemical Constituents ◽

Ethyl Acetate Fraction ◽

Antibacterial Activities ◽

Sub Saharan Africa ◽

Chromatographic Purification ◽

Whole Plant ◽

Sub Saharan ◽

First Time

: Cissus aralioides is a medicinal plant used in sub-Saharan Africa for treatment of infectious diseases; however the chemical constituents of the plant have not been investigated. Thus, in this study, attempt was made at identifying predominant phytochemical constituents of the plant through chromatographic purification and silylation of the plant extract, and subsequent characterization using spectroscopic and GC-MS techniques. The minimum inhibitory concentration (MICs) for the antibacterial activities of the plant extract, chromatographic fractions and isolated compounds were also examined. Chromatographic purification of the ethyl acetate fraction from the whole plant afforded three compounds: β-sitosterol (1), stigmasterol (2) and friedelin (3). The phytosterols (1 and 2) were obtained together as a mixture. The GC-MS analysis of silylated extract indicated alcohols, fatty acids and sugars as predominant classes, with composition of 24.62, 36.90 and 26.52% respectively. Results of MICs indicated that friedelin and other chromatographic fractions had values (0.0626-1.0 mg/mL) comparable with the standard antibiotics used. Characterization of natural products from C. aralioides is being reported for the first time in this study.

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Semi-solvo thermal synthesis and characterization of zinc oxide nanostructures against food borne pathogens

International Journal of Pharma and Bio Sciences ◽

10.22376/ijpbs.2017.8.2.b311-315 ◽

2017 ◽

Vol 8 (2) ◽

Cited By ~ 1

Author(s):

JAYANT PAWAR ◽

MANISH SHINDE ◽

RAVINDRA CHAUDHARI ◽

E. A. SINGH

Keyword(s):

Zinc Oxide ◽

Synthesis And Characterization ◽

Zinc Oxide Nanostructures ◽

Thermal Synthesis ◽

Oxide Nanostructures ◽

Food Borne Pathogens ◽

Food Borne

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In Vitro Characterization of the Antibacterial Spectrum of Novel Bacterial Type II Topoisomerase Inhibitors of the Aminobenzimidazole Class

Antimicrobial Agents and Chemotherapy ◽

10.1128/aac.50.4.1228-1237.2006 ◽

2006 ◽

Vol 50 (4) ◽

pp. 1228-1237 ◽

Cited By ~ 56

Author(s):

Nagraj Mani ◽

Christian H. Gross ◽

Jonathan D. Parsons ◽

Brian Hanzelka ◽

Ute Müh ◽

...

Keyword(s):

Bacterial Resistance ◽

Wide Spectrum ◽

Dna Gyrase ◽

Antibacterial Activities ◽

Mechanisms Of Action ◽

Fluoroquinolone Resistance ◽

Topoisomerase Iv ◽

Low Frequencies

ABSTRACT Antibiotics with novel mechanisms of action are becoming increasingly important in the battle against bacterial resistance to all currently used classes of antibiotics. Bacterial DNA gyrase and topoisomerase IV (topoIV) are the familiar targets of fluoroquinolone and coumarin antibiotics. Here we present the characterization of two members of a new class of synthetic bacterial topoII ATPase inhibitors: VRT-125853 and VRT-752586. These aminobenzimidazole compounds were potent inhibitors of both DNA gyrase and topoIV and had excellent antibacterial activities against a wide spectrum of problematic pathogens responsible for both nosocomial and community-acquired infections, including staphylococci, streptococci, enterococci, and mycobacteria. Consistent with the novelty of their structures and mechanisms of action, antibacterial potency was unaffected by commonly encountered resistance phenotypes, including fluoroquinolone resistance. In time-kill assays, VRT-125853 and VRT-752586 were bactericidal against Staphylococcus aureus, Streptococcus pneumoniae, Enterococcus faecalis, and Haemophilus influenzae, causing 3-log reductions in viable cells within 24 h. Finally, similar to the fluoroquinolones, relatively low frequencies of spontaneous resistance to VRT-125853 and VRT-752586 were found, a property consistent with their in vitro dual-targeting activities.

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