New experimental low-cost nanoscience technology for formulation of silver nanoparticles-activated carbon composite as a promising antiviral, biocide, and efficient catalyst

Fetouh, H. A.; Abdel-Naby, Hoda Mohamed; Alsubaie, Mai S.; Sallam, Eman R.

doi:10.1080/17458080.2022.2068794

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…All pXRD patterns showed a prominent sharp diffraction peak at 30 • . SNPs increased the peaks' intensity and modified crystal structure and lattice planes [22][23][24]. The crystals' structure and geometry agreed with Crystallography Opened Database, COD files.…”

Section: Resultssupporting

confidence: 64%

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Growth of New, Optically Active, Semi-Organic Single Crystals Glycine-Copper Sulphate Doped by Silver Nanoparticles

et al. 2023

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The purpose of this study is to modify all physicochemical properties of glycine–copper sulphate single crystals, such as crystal habits, molar mass, thermal stability, optical activity, and electrical properties. The novelty of this study is growth of glycine–copper sulphate single crystals doped by a low concentration of silver nanoparticles (SNPs) that improved both crystal habits and physicochemical properties. The originality of this work is that trace amounts of SNPs largely increased the crystal size. Crystals have molar stoichiometric formula [glycine]0.95, [CuSO4·5H2O]0.05 in the absence and presence of silver nanoparticles (SNPs) in different concentrations: 10 ppm, 20 ppm, and 30 ppm. The crystals’ names and abbreviations are: glycine–copper sulphate (GCS), glycine–copper sulphate doped by 10 ppm SNPs (GCSN1), glycine–copper sulphate doped by 20 ppm SNPs (GCSN2), and glycine–copper sulphate doped by 30 ppm SNPs (GCSN3). Dopant silver nanoparticles increased: crystallinity reflecting purity, transparency to UV-Vis. electromagnetic radiation, thermal stability, and melting point of glycine–copper sulphate single crystal. GCSN3 is a super conductor. High thermal conductivity of crystals ranging from 1.1 W·min−1·K−1 to 1.6 W·min−1·K−1 enabled attenuation of electromagnetic radiation and rapid heat dissipation due to good dielectric and polar properties. On rising temperature, AC electrical conductivity and dielectric properties of perfect crystal GCSN3 increased confirmed attenuation of thermal infrared radiation.

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Section: Resultssupporting

confidence: 64%

“…Intensity changes and a slight shift in peak positions of GCS by SNPs reflected modified crystalline planes [23]. Diffraction peaks at 44.4 • and 64.7 • in GCSN2 and GCSN3 confirmed doping impurities [24].…”

Section: Resultsmentioning

confidence: 92%

Growth of New, Optically Active, Semi-Organic Single Crystals Glycine-Copper Sulphate Doped by Silver Nanoparticles

et al. 2023

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“…Negative ΔS # indicated ordering associative activated complex in corrosion mechaism. Corrosion system becomes more ordered on passing from reactants to activated complex [29] …”

Section: Resultsmentioning

confidence: 99%

Synthesis and Characterization of Nicotinonitrile Derivatives as Efficient Corrosion Inhibitors for Acid Pickling of Brass Alloy in Nitric Acid

et al. 2022

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Three nitrogen-heterocyclic nicotinonitriles compounds 4, 6dimethyl-2-(methylamino)-nicotinonitrile 3; 2-(dimethylamino)-4, 6-dimethyl-nicotinonitrile 4, 2-((3-bromophenyl)-amino)-4, 6dimethyl-nicotinonitrile 5 are prepared and characterized by Fourier transformer infra-red spectroscopy, proton nuclear magnetic resonance, mass spectrometry and elemental analysis. Novelty of study is synthesis and evaluation of new series organic compounds of related chemical structures as corrosion inhibitors acid pickling of brass alloy by nitric acid. Compound 5 is prepared for the first time. Compounds 3-5 are potent biocides and efficient corrosion inhibitors for brass alloy. Inhibition efficiency 94 %, 95 %, 96 % are achieved at 180 ppm compounds 3-5, respectively. Inhibition efficiency followed the order: compound 5 > 4 > 3. For compound 5, increase charge transfer resistance and decrease in capacitance of electrical double layer confirmed adsorption mechanism. Limiting current indicated that corrosion is controlled by mass transfer of oxygen toward metal surface. Inhibition efficiency followed quantitative structure activity relationships. For the same molecular chemical structure of nicotinonitriles compounds 3-5, Substituents methylamino, dimethylamino and 3-bromophenylamino increased inhibition efficiency following the order: 3-Br-C 6 H 4 NH > (CH 3 ) 2 N > CH 3 NH.

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The Pathology of the Brain Eating Amoeba Naegleria fowleri

Borkens

2024

Indian J Microbiol

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The genus Naegleria is a taxonomic subfamily consisting of 47 free-living amoebae. The genus can be found in warm aqueous or soil habitats worldwide. The species Naegleria fowleri is probably the best-known species of this genus. As a facultative parasite, the protist is not dependent on hosts to complete its life cycle. However, it can infect humans by entering the nose during water contact, such as swimming, and travel along the olfactory nerve to the brain. There it causes a purulent meningitis (primary amoebic meningoencephalitis or PAME). Symptoms are severe and death usually occurs within the first week. PAME is a frightening infectious disease for which there is neither a proven cure nor a vaccine. In order to contain the disease and give patients any chance to survival, action must be taken quickly. A rapid diagnosis is therefore crucial. PAME is diagnosed by the detection of amoebae in the liquor and later in the cerebrospinal fluid. For this purpose, CSF samples are cultured and stained and finally examined microscopically. Molecular techniques such as PCR or ELISA support the microscopic analysis and secure the diagnosis.

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New experimental low-cost nanoscience technology for formulation of silver nanoparticles-activated carbon composite as a promising antiviral, biocide, and efficient catalyst

Cited by 7 publications

References 25 publications

Growth of New, Optically Active, Semi-Organic Single Crystals Glycine-Copper Sulphate Doped by Silver Nanoparticles

Growth of New, Optically Active, Semi-Organic Single Crystals Glycine-Copper Sulphate Doped by Silver Nanoparticles

Synthesis and Characterization of Nicotinonitrile Derivatives as Efficient Corrosion Inhibitors for Acid Pickling of Brass Alloy in Nitric Acid

The Pathology of the Brain Eating Amoeba Naegleria fowleri

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