PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

Abebe, Buzuayehu; Murthy, H. C. Ananda; Zereffa, Enyew Amare; Adimasu, Yeshaneh

doi:10.1088/2053-1591/ab87d5

Cited by 39 publications

(21 citation statements)

References 43 publications

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“…The ROS generation and electrostatic force interaction were suggested to be the probable antibacterial mechanism that led to bacterial death. Compared to single ZnO, the antibacterial bacterial activity of PVA assisted binary ZnO/Fe 2 O 3 and ZnO/Mn 2 O 3 [ 72 ] and ternary ZnO/Fe 2 O 3 /Mn 2 O 3 nanocomposite [ 20 ] also confirmed on the author’s earlier work. The nanocomposite materials were synthesized using the sol-gel followed by the self-propagation technique.…”

Section: Introductionmentioning

confidence: 56%

“…Yet, the antibacterial activity of ZnO is highly dependent on the particle size. It was reported that decreasing the particle size results in enhancing the antibacterial activity of ZnO [ 5 , 20 ]. To indicate, Jones et al compared the antibacterial activities of MgO, TiO 2 , Al 2 O 3 , CuO, CeO 2 , and ZnO against S. aureus RN6390 bacteria.…”

Section: Introductionmentioning

confidence: 99%

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A Review on Enhancing the Antibacterial Activity of ZnO: Mechanisms and Microscopic Investigation

et al. 2020

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Metal oxide nanomaterials are one of the preferences as antibacterial active materials. Due to its distinctive electronic configuration and suitable properties, ZnO is one of the novel antibacterial active materials. Nowadays, researchers are making a serious effort to improve the antibacterial activities of ZnO by forming a composite with the same/different bandgap semiconductor materials and doping of ions. Applying capping agents such as polymers and plant extract that control the morphology and size of the nanomaterials and optimizing different conditions also enhance the antibacterial activity. Forming a nanocomposite and doping reduces the electron/hole recombination, increases the surface area to volume ratio, and also improves the stability towards dissolution and corrosion. The release of antimicrobial ions, electrostatic interaction, reactive oxygen species (ROS) generations are the crucial antibacterial activity mechanism. This review also presents a detailed discussion of the antibacterial activity improvement of ZnO by forming a composite, doping, and optimizing different conditions. The morphological analysis using scanning electron microscopy, field emission-scanning electron microscopy, field-emission transmission electron microscopy, fluorescence microscopy, and confocal microscopy can confirm the antibacterial activity and also supports for developing a satisfactory mechanism. Graphical abstract Graphical abstract showing the metal oxides antibacterial mechanism and the fluorescence and scanning electron microscopic images.

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Section: Introductionmentioning

confidence: 56%

Section: Introductionmentioning

confidence: 99%

A Review on Enhancing the Antibacterial Activity of ZnO: Mechanisms and Microscopic Investigation

et al. 2020

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“…The material synthesized using nitrate as a precursor is creating greater self-propagation process, so small particle size founding. The conducted amount of PVA loading and precursor's percentage optimization study was also reported earlier [19].…”

Section: Resultsmentioning

confidence: 80%

“…Through aging the formed sol for two days, the gel was dried at ∼110°C for about 13 h and calcined at ∼500°C for 3 h to form metal oxides. The detailed synthetic procedure is depicted in [19] and figure 1. The synthesized TMONCs were coded as TMOM1 and TMOM2 for TMONCs synthesized using sol-gel and co-precipitation methods without PVA, respectively.…”

Section: Introductionmentioning

confidence: 99%

Porous PVA/Zn–Fe–Mn oxide nanocomposites: methylene blue dye adsorption studies

Abebe

Murthy

Zereffa

et al. 2020

Mater. Res. Express

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Adsorption is one of the noble techniques for remediation of organic and inorganic pollutants. The poly (vinyl alcohol) supported sol-gel and self-propagation routes have been used for the synthesis of porous ternary metal oxides nanocomposites. The optical, chemical bonding, crystallinity, morphological, textural, and electrochemical properties of the synthesized materials were characterized by DRS-UV-vis, FT-IR, XRD, SEM/EDX and TEM/HRTEM/SAED, BET, and CV/EIS techniques, respectively. The characterization of the nanocomposites confirmed their porous nature, high surface area, and better electrochemical properties. The synthesized nanomaterials were tested for the adsorption property of methylene blue dye. Important parameters such as the amount of PVA supported ternary metal oxide nanocomposite, pH of the solution, contact time, and concentration of methylene blue dye were optimized. For further understanding of the adsorption process, the adsorption isotherms and adsorption kinetics models were used. The adsorption tests revealed the presence of the chemisorption type of the adsorption process. several advantageous properties [8,9]. Besides, its hydroxyl groups on the carbon chain backbone act as a source for the formation of hydrogen bonding and enhances the formation of the nanocomposite [10]. As confirmed by various researchers [11][12][13][14][15][16], around 250, 300, 390, 400, and 400°C-500°C; the intramolecular decomposition, amorphous portion degradation, intermolecular breakdown, decaying of the crystalline portion of PVA, and formation of pure metal oxides had occurred, respectively.From methods used for the synthesis of inorganic nanomaterials/nanocomposites, the top-down and bottom-up approaches are common. Compared to the former, the latter is more popular and is considered as a promising route to control the growth, morphology, and properties of the nanomaterials. From the bottom-up chemical approaches; the hydrothermal, microemulsion, wet impregnation, sonochemical, ultrasonicmicrowave, electrochemical/electroless deposition, and spray-pyrolysis techniques are successfully applied. However, it is reported that these techniques follow special operating-conditions, long reaction time, lowthrough-put, and expensive procedure [17]. Therefore, it is essential to use effective and economically feasible methods such as sol-gel, precipitation, and impregnation. Furthermore, during the synthesis process, avoiding solvents that cause cancer and has mutagenic properties should also be taken into consideration [18].Considering all the mentioned aspects, this work was aimed to synthesize PVA supported ternary metal oxide nanocomposite (PVA-TMONC), using a simple and green sol-gel-self propagation technique. The methylene blue dye (MBD) adsorption efficiency of the synthesized PVA-TMONC was also tested. The physical properties of synthesized materials were characterized by critical analytical techniques. Using the Langmuir, Freundlich, Dubinin-Radushkevich (D-RK), Temkin, Flory-Huggins (FH), and Fowler-Gugge...

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“…The instrumental details and the reagents used were present as supplementary material (S). The detailed ZnO and PTMO-NCM synthesis procedures were also present in the author's earlier works [1,[26][27][28]. Roughly, the PVA polymer was dissolved in distilled water with continuous stirring on a magnetic stirrer at ~ 115 °C for about 15 min.…”

Section: Methodsmentioning

confidence: 99%

Multifunctional application of PVA-aided Zn–Fe–Mn coupled oxide nanocomposite

2021

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Zinc oxide (ZnO) is a fascinating semiconductor material with many applications such as adsorption, photocatalysis, sensor, and antibacterial activities. By using a poly (vinyl alcohol) (PVA) polymer as a capping agent and metal oxides (iron and manganese) as a couple, the porous PVA-aided Zn/Fe/Mn ternary oxide nanocomposite material (PTMO-NCM) was synthesized. The thermal, optical, crystallinity, chemical bonding, porosity, morphological, charge transfer properties of the synthesized materials were confirmed by DTG/DSC, UV–Vis-DRS, XRD, FT-IR, BET, SEM-EDAX/TEM-HRTEM-SAED, and CV/EIS/amperometric analytical techniques, respectively. The PTMO-NCM showed an enhanced surface area and charge transfer capability, compared to ZnO. Using the XRD pattern and TEM image analysis, the crystalline size of the materials was confirmed to be in the nanometer range. The porosity and superior charge transfer capabilities of the PTMO-NCM were confirmed from the BET, HRTEM (IFFT)/SAED, and CV/EIS analysis. The adsorption kinetics (adsorption reaction/adsorption diffusion) and adsorption isotherm test confirmed the presence of a chemisorption type of adsorbate/methylene blue dye-adsorbent/PTMO-NCM interaction. The photocatalytic performance was tested on the Congo red and Acid Orange-8 dyes. The superior ascorbic acid sensing capability of the material was understood from CV and amperometric analysis. The noble antibacterial activities of the material were also confirmed on both gram-negative and gram-positive bacteria.

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PVA assisted ZnO based mesoporous ternary metal oxides nanomaterials: synthesis, optimization, and evaluation of antibacterial activity

Cited by 39 publications

References 43 publications

A Review on Enhancing the Antibacterial Activity of ZnO: Mechanisms and Microscopic Investigation

A Review on Enhancing the Antibacterial Activity of ZnO: Mechanisms and Microscopic Investigation

Porous PVA/Zn–Fe–Mn oxide nanocomposites: methylene blue dye adsorption studies

Multifunctional application of PVA-aided Zn–Fe–Mn coupled oxide nanocomposite

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