Microwave assisted CdO–ZnO–MgO nanocomposite and its photocatalytic and antibacterial studies

Revathi, V.; Kannan, Karthik

doi:10.1007/s10854-018-9968-1

Cited by 85 publications

(21 citation statements)

References 50 publications

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“…For the sample annealed at 300 °C, eleven diffraction peaks appear in the XRD pattern, consistent with hexagonal wurtzite ZnO (JCPDS card No. 65–3411) [ 28 ], as shown in Figure 1 .…”

Section: Resultsmentioning

confidence: 99%

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Yan

2022

Nanomaterials

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The degradation of pollutants in wastewater using abundant resources and renewable energy sources, such as light, is attractive from an environmental perspective. ZnO is a well-known photocatalytic material. Therefore, in this study, a hierarchical ZnO microsphere precursor was prepared using a hydrothermal method. The precursor was subsequently annealed at different temperatures, which enabled the production of a ZnO catalyst having a controllable morphology. Specifically, as the annealing temperature increased, the precursor crystallized into hexagonal wurtzite and the crystallinity also increased. The catalysts were tested for their photocatalytic activity for the degradation of dye molecules (methylene blue and rhodamine B), and the catalyst sample annealed at 400 °C showed the best photocatalytic activity. The origin of this activity was studied using electron paramagnetic resonance spectroscopy and transient photocurrent measurements, and the structure of the optimal catalyst was invested using electron microscopy measurements, which revealed that it was formed of two-dimensional nanosheets having smooth surfaces, forming a 2D cellular network. Thus, we have presented a promising photocatalyst for the mineralization of organic contaminants in wastewater.

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“…For the sample annealed at 300 °C, eleven diffraction peaks appear in the XRD pattern, consistent with hexagonal wurtzite ZnO (JCPDS card No. 65–3411) [ 28 ], as shown in Figure 1 .…”

Section: Resultsmentioning

confidence: 99%

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Yan

2022

Nanomaterials

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“…Two different pathways for antibacterial mechanism of Cu 4 O 3 NPs have been reported by various researchers as discussed below, and the cell death and membrane leakage are due to the release of Cu 2+ ions and production of reactive oxygen species. The smaller particle size gives more reactive surface area to interact with the bacteria, enhancing a better antibacterial efficiency [37,38]. Generally, the effect of antibacterial activity depends on their morphology, specific surface area (SSA), size, charges and reactive oxygen species (ROS) [39].…”

Section: Variation In Susceptibility Between the Selected Strainsmentioning

confidence: 99%

Biosynthesis of Cu4O3 nanoparticles using Razma seeds: application to antibacterial and cytotoxicity activities

Thanuja

Udayabhanu²,

Nagaraju³

et al. 2019

SN Appl. Sci.

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In the present work, Cu 4 O 3 nanoparticles were prepared by biosynthesis method using Razma seeds and copper sulfate as a precursors. The synthesized Cu 4 O 3 nanoparticles were characterized using various analytical tools such as XRD, FTIR, UV-Vis, SEM and TEM. The average crystallite size of the prepared Cu 4 O 3 nanoparticles was calculated by Debye-Scherrer's equation and found to be 13 nm. The TEM images clearly reveal the average size of the particles is 27 nm. Antibacterial activity of Cu 4 O 3 nanoparticles was tested against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria by agar well diffusion method. The cytotoxic activity of synthesized Cu 4 O 3 nanoparticles was examined against human prostate cancer cells (PC-3). The prepared NPs show the significant antioxidant activity through scavenging of 1,1-diphenyl-2-picrylhydrazyl free radicals.

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“…), cancer therapy, tissue engineering, bioimaging, biosensing etc. [6][7][8]. ZnO nanoparticle exhibits significant antimicrobial activity because nano-sized ZnO can easily interact with bacterial surface and destroy them through either toxification or structural aberration [9].…”

Section: Introductionmentioning

confidence: 99%

Microwave assisted synthesis of zinc oxide (ZnO) nanoparticles in a noble approach: utilization for antibacterial and photocatalytic activity

et al. 2020

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In this study, zinc oxide (ZnO) nanoparticle was synthesized by a novel route of microwave assisted method using ascorbic acid and PVA as capping agent and stabilizing agent. A prominent peak at 378 nm by UV absorption ensured the synthesis of ZnO nanoparticles. The crystalline property revealed that synthesized ZnO nanoparticle is highly crystalline having wurtzite structure. A significant band at ~ 498 to 557 cm −1 in FTIR was assigned to the characteristic stretching mode of Zn-O bond. EDX spectrum showed that ZnO nano particles were composed only with Zinc and oxygen. SEM image disclosed that ZnO nanoparticles were spherical in shape with an average particle size of 70-90 nm for the combined effect. The antimicrobial and ant-biofilm application of synthesized ZnO nanoparticle was studied against Salmonella typhi, Klebsiella spp. SK4, E. coli RN89, E. coli (gram-negative) and S. aureus-8a (gram-positive) bacteria and exhibited excellent activity against the strains. Prepared nanoparticle also found to possess outstanding photocatalytic activity against methylene blue degradation under sunlight with a T 50 and T 80 value of 71.44 and 165.87 min respectively.

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Microwave assisted CdO–ZnO–MgO nanocomposite and its photocatalytic and antibacterial studies

Cited by 85 publications

References 50 publications

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Morphologically Controllable Hierarchical ZnO Microspheres Catalyst and Its Photocatalytic Activity

Biosynthesis of Cu4O3 nanoparticles using Razma seeds: application to antibacterial and cytotoxicity activities

Microwave assisted synthesis of zinc oxide (ZnO) nanoparticles in a noble approach: utilization for antibacterial and photocatalytic activity

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