A comparative study of antibacterial, anticancer and gas-sensing properties of zinc oxide nanostructures synthesized by different routes

Ramesh, T.; Sravanthi, B.; Umadevi, G.; Konakanchi, Ramaiah; Safala, B. Anna Tanuja; Suneetha, T.

doi:10.1007/s10854-022-09442-9

Cited by 11 publications

(3 citation statements)

References 46 publications

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“…The electron and hole pairs generated in the system result in the generation of ROS and these ROS play a significant role in the antibacterial activity of synthesized ZnO compounds. T. Ramesh et al [ 69 ] discussed the importance of the synthesis method and shape of the synthesized ZnO compounds on antibacterial activity. They observed a significant impact on the formation of the synthesized nanostructures.…”

Section: Resultsmentioning

confidence: 99%

Influence of Metal (Al, Mg, Sm, and Cu) Dopants on Structural, Optical, Magnetic, and Antimicrobial Properties of ZnO Nanopowders Synthesized by Coprecipitation Method

Sowmya,

Aparna,

Chendra Prakash

et al. 2023

Physica Status Solidi (a)

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Pure and metal‐doped ZnO nanopowders with composition formula M0.04Zn0.96O (where M=Al, Mg, Sm and Cu) have been synthesized using the co‐precipitation method. The structural characterization of the synthesized powders was investigated using X‐ray diffraction (XRD) and the results confirm the hexagonal wurtzite structure without any additional phases. The change in structural parameters of ZnO with dopants was estimated using X‐ray peak profile analysis. The structural characterization was further analyzed by Fourier transform infrared spectroscopy (FTIR). The size and morphology of the synthesized powders were analyzed by a field emission scanning electron microscope (FE‐SEM), which also evidences the formation of uniform nanostructures with quasi‐spherical and hexagonal shapes. Moreover, the elemental composition of these metal‐doped nanostructures is determined by EDX measurements. UV‐Vis. spectroscopy is used to determine the energy band gap of ZnO by adding metal ion dopants. A vibration sample magnetometer (VSM) was employed to measure the samples’ magnetic properties, and dopants were found to induce distinct magnetic behaviors in ZnO. The antimicrobial activity of the synthesized powders was measured using the well diffusion method. It was observed that the introduction of dopant metals led to increased microbial activity. Among the doped ZnO variants, Al‐doped ZnO exhibited the highest level of microbial activity compared to pure ZnO and other samples.This article is protected by copyright. All rights reserved.

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Section: Resultsmentioning

confidence: 99%

Influence of Metal (Al, Mg, Sm, and Cu) Dopants on Structural, Optical, Magnetic, and Antimicrobial Properties of ZnO Nanopowders Synthesized by Coprecipitation Method

Sowmya,

Aparna,

Chendra Prakash

et al. 2023

Physica Status Solidi (a)

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“…A heterojunction interface that is formed by incorporating two or more nanomaterials can have significant effects on the performance of the sensor. [24][25][26][27] In the present study, we synthesized Iron loaded Indium zinc oxide NC heterostructure for gas sensing study. There are certain prerequisites for a good sensor-Selectivity, Sensitivity and Stability.…”

Section: Resultsmentioning

confidence: 99%

Optimizing Gas Sensing Properties of Fe-Loaded Indium Zinc Oxide Nanocomposite for Efficient Detection of Ammonia Gas

Krishna,

Parne,

Nagaraju

2023

ECS J. Solid State Sci. Technol.

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The current study delineates the role of gas sensing properties of Fe-IZO (Iron loaded Indium Zinc oxide) a mixed metal oxide nanocomposite. The heterostructured Fe-IZO nanocomposite (NC) was synthesized via the facile co-precipitation method. The Fe-IZO NC was characterized by various experimental techniques and the results attained allowed us to suggest the mechanism for considering the connection between morphological variations and gas-sensing characteristics of Fe-IZO NC. One of the cutting-edge circumstances now-a-days is the prime use of gas sensors for environmental applications. The NC has a good selectivity for NH3 gas that has shown good stability up to 80 d. The response time (ℸres) is 64 s, recovery time (ℸrec) is 72 s for 50 ppm (parts per million) and obtained a highest response of 87% at room temperature. The Fe-IZO NC heterostructure with efficient charge transfer can enable the subsequent reaction mechanism with NH3 gas and the adsorbed oxygen ions leading to an increased response. Consequently, the results attained in this work has shown that the synthesized heterostructured NC sensor is suitable for room temperature NH3 sensing with high performance.

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“…In areas near intensive farming, concentration levels exceeding the allowed exposure limit create unhealthy conditions inside stables for both farmers and animals, particularly where concentrations are at their maximum. 15 While the odor of ammonia is detectable at high concentrations, it becomes challenging to identify low gas concentrations, which the human nose fails to detect. Therefore, there is a critical need to design a sensor capable of detecting low concentrations of ammonia vapors.…”

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confidence: 99%

Synthesis and Properties of Eu and Ni Co-Doped ZnS Nanoparticles for the Detection of Ammonia Gas

Ankinapalli,

G. S.,

Kurugundla

et al. 2024

ECS J. Solid State Sci. Technol.

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Zinc sulfide nanoparticles were synthesized successfully via chemical co-precipitation, both in undoped form and co-doped with Europium (Eu) and Nickel (Ni). All prepared samples exhibited cubic blended structure as confirmed by X-ray diffraction (XRD). The average particle size ranged from 3 to 6 nm for both pure and (Eu, Ni) co-doped ZnS, with no alteration in the crystal structure due to Eu and Ni co-doping. However, increasing the Ni dopant concentration (0, 2, 4, & 6 at. %) while maintaining a constant Eu concentration (4 at. %) led to an enhancement in the crystallite size. This was further validated by transmission electron microscopy (TEM), which showed particle sizes consistent with the XRD findings (3-5 nm). Microscopic analysis via scanning electron microscopy and TEM revealed spherical agglomerated morphology for the (Eu, Ni) co-doped nanoparticles. Energy-dispersive X-ray spectroscopy spectra confirmed the stoichiometric chemical composition of ZnS: Eu, Ni. Photoluminescence studies demonstrated an increased intensity of green luminescence at 6 at.% Ni co-dopant concentration. Moreover, the synthesized samples exhibited promising gas sensing properties, particularly towards ammonia gas, with good selectivity. Notably, both pure and (Eu, Ni) co-doped ZnS nanoparticles showed rapid response and recovery times at room temperature, suggesting their potential applicability in gas sensing applications.

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A comparative study of antibacterial, anticancer and gas-sensing properties of zinc oxide nanostructures synthesized by different routes

Cited by 11 publications

References 46 publications

Influence of Metal (Al, Mg, Sm, and Cu) Dopants on Structural, Optical, Magnetic, and Antimicrobial Properties of ZnO Nanopowders Synthesized by Coprecipitation Method

Influence of Metal (Al, Mg, Sm, and Cu) Dopants on Structural, Optical, Magnetic, and Antimicrobial Properties of ZnO Nanopowders Synthesized by Coprecipitation Method

Optimizing Gas Sensing Properties of Fe-Loaded Indium Zinc Oxide Nanocomposite for Efficient Detection of Ammonia Gas

Synthesis and Properties of Eu and Ni Co-Doped ZnS Nanoparticles for the Detection of Ammonia Gas

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