Morphologies, crystal structure and antibacterial properties of chromium substituted zinc oxide nanoparticles synthesized by microwave method

Prakasam, A.; Anbarasan, P. M.; Raj, R. Azhagu; Ragupathi, C.; Kumar, Rajneesh

doi:10.1016/j.matpr.2021.11.100

“…3b, shows the particles in thin sheet, needle, and spherical shape with mean size ~20 nm. Little needles are assembled in nanorods of diameter ~ 6 nm, length 80 nm, and aspect ratio ~13 [32,33]. The microstructure analysis has approved that the nanocombs possess superior architecture topological features.…”

Section: Morphological Characteristicsmentioning

confidence: 99%

The high impact of zinc chromium oxide nanocombs on development of larvicidal and antimicrobial performance

Elhalaby,

Elshanawany,

Otaif

et al. 2024

Preprint

1

0

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Zinc chromium oxide (Cr/ZnO, 5wt.%) was prepared by a facile chemical co-precipitation route. The structure, composition, and chemical bonding were analyzed using X-ray diffraction (XRD), Energy dispersive X-ray spectroscopy (EDX), and Fourier-transform infrared spectroscopy (FTIR) indicating that chromium ions were integrated the host framework to form Cr/ZnO nanocomposite. Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) micrographs showed comb-shaped nanoparticles with an average size 20 nm and large surface area. The energy gap of the thin films was estimated from T% and R% measurements which exhibit a strong optical absorption edge close to the visible spectrum. The insecticidal activity of the synthesized nanocombs against C. pipiens larvae was evaluated with LC50 (30.15 ppm) and LC90 (100.22 ppm). Besides, the nanocomposite showed high antibacterial performance against gram-positive bacteria (Bacillus subtilis) and gram-negative bacteria (Proteus vulgaris) with inhibition zones 21.9 and 19 mm, respectively.

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“…In current work, the biobased composite antibacterial emulsion was modified by cationic oxidized starch grafted styrene‐acrylic emulsion with AEM5700 and tea polyphenols via soap free emulsion polymerization. [ 37 ] It combines the advantages of cationic oxidized starch grafted styrene‐acrylate emulsion, [ 38 ] tea polyphenol, and AEM5700 antibacterial agent. The effects of the compound antibacterial agent on the emulsion performance were investigated.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Cationic Starch Compound Emulsion by Graft Copolymerization with Tea Polyphenols and AEM5700

Li

¹

,

Wang

²

,

Liu

³

et al. 2024

Starch Stärke

1

0

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An antibacterial biobased compound emulsion was prepared by modifying cationic oxidized starch grafted styrene‐acrylic emulsion with 3 – (trimethoxysilyl) – propyldimethyloctadecyl ammonium chloride (AEM5700) and tea polyphenols. The biobased compound emulsion exhibited better stability, chemical properties and antibacterial properties. The structure and surface morphology of biobased compound emulsion were characterized by Fourier Transform infrared spectroscopy (FTIR) and Transmission electron microscopy (TEM). The thermal stability of biobased compound emulsion was improved, which can be concluded from the thermogravimetric analysis (TGA). The surface morphology of film was observed by the atomic force microscope (AFM). The wetting property of emulsion film was tested by contact angle test. When the compound ratio was 1.5, the biobased antibacterial compound emulsion had better stability and antibacterial properties. Compared to a single antibacterial agent, the inhibition zone increased by 4–5.5 mm. In addition, the polymerization mechanism of the biobased antibacterial emulsion was analyzed.This article is protected by copyright. All rights reserved

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The high impact of zinc chromium oxide nanocombs on development of larvicidal and antimicrobial performance

Mostafa,

Elshanawany,

Otaif

et al. 2024

BMC Chemistry

2

0

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Zinc chromium oxide (Cr/ZnO, 5wt.%) was prepared by a facile chemical co-precipitation route. The structure, composition, and chemical bonding were analyzed using X-ray diffraction (XRD), Energy dispersive X-ray spectroscopy (EDX), and Fourier-transform infrared spectroscopy (FTIR) indicating that chromium ions were integrated the host framework to form Cr/ZnO nanocomposite. Scanning electron microscopy (SEM) and Transmission electron microscopy (TEM) micrographs showed comb-shaped nanoparticles with an average size 20 nm and large surface area. The energy gap of the thin films was estimated from T% and R% measurements which exhibit a strong optical absorption edge close to the visible spectrum. The insecticidal activity of the synthesized nanocombs against C. pipiens larvae was evaluated with LC50 (30.15 ppm) and LC90 (100.22 ppm). Besides, the nanocomposite showed high antibacterial performance against gram-positive bacteria (Bacillus subtilis) and gram-negative bacteria (Proteus vulgaris) with inhibition zones 21.9 and 19 mm, respectively.

show abstract

Morphologies, crystal structure and antibacterial properties of chromium substituted zinc oxide nanoparticles synthesized by microwave method

Cited by 3 publications

References 22 publications

The high impact of zinc chromium oxide nanocombs on development of larvicidal and antimicrobial performance

The high impact of zinc chromium oxide nanocombs on development of larvicidal and antimicrobial performance

Synthesis of Cationic Starch Compound Emulsion by Graft Copolymerization with Tea Polyphenols and AEM5700

The high impact of zinc chromium oxide nanocombs on development of larvicidal and antimicrobial performance

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