The effect of shape and size of ZnO nanoparticles on their antimicrobial and photocatalytic activities: a green approach

Sharma, Saurabh; Kumar, Kuldeep; Thakur, Naveen; Chauhan, Suvarcha; Chauhan, M. S.

doi:10.1007/s12034-019-1986-y

Cited by 122 publications

(62 citation statements)

References 27 publications

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“…They are internalized into the microorganisms after adsorption resulting in loss of cell integrity based on cell wall or membrane rupture, and further mediate oxidative stress owing to lipid peroxidation leading to deoxyribonucleic acid (DNA) damage. Based on the fundamental mechanisms of action, ZnO NPs/MPs have a differential susceptibility against pathogenic microorganisms, affected by their physicochemical characteristics including morphology, particle size, and porosity [ 3 , 17 , 18 , 73 ].…”

Section: Antimicrobial Ctivity Against Pathogenic Microorganismsmentioning

confidence: 99%

“…Smaller NPs (12–30 nm) showed a superior antimicrobial growth inhibition (~94.05%) than larger NPs at the same concentration (6 mM). In addition, three types of ZnO NPs shaped like hexagons, spheres, and cubes or rods showed antimicrobial activity against E. coli , S. aureus , and B. subtilis [ 17 ]. The minimum inhibitory concentration (MIC) levels of ZnO NPs at ~63 nm, ~65 nm and 60–180 nm, and 40–45 nm were determined as 1562 μg/mL against E. coil , 391–781 μg/mL against S. aureus , and 195–391 μg/mL against B. subtilis , respectively.…”

Section: Antimicrobial Ctivity Against Pathogenic Microorganismsmentioning

confidence: 99%

“…ZnO NPs/MPs of various shapes such as spheres, rods, needles, and platelets, and their average aspect ratios (defined as ratio of length to width) can influence the antimicrobial actions against microorganisms. Their particle size and particle size distribution levels are the key parameters that determine NP uptake into biomembranes and thereby influence antimicrobial activity against pathogenic microorganisms [ 16 , 17 ]. Intra- and interparticle pores of ZnO NPs/MPs also enhance photocatalytic antimicrobial interactions under ultraviolet (UV) and visible light irradiation based on reactive oxygen species (ROS) [ 5 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Antimicrobial Activity of Zinc Oxide Nano/Microparticles and Their Combinations against Pathogenic Microorganisms for Biomedical Applications: From Physicochemical Characteristics to Pharmacological Aspects

Jin

2021

Nanomaterials

123

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Zinc oxide (ZnO) nano/microparticles (NPs/MPs) have been studied as antibiotics to enhance antimicrobial activity against pathogenic bacteria and viruses with or without antibiotic resistance. They have unique physicochemical characteristics that can affect biological and toxicological responses in microorganisms. Metal ion release, particle adsorption, and reactive oxygen species generation are the main mechanisms underlying their antimicrobial action. In this review, we describe the physicochemical characteristics of ZnO NPs/MPs related to biological and toxicological effects and discuss the recent findings of the antimicrobial activity of ZnO NPs/MPs and their combinations with other materials against pathogenic microorganisms. Current biomedical applications of ZnO NPs/MPs and combinations with other materials are also presented. This review will provide the better understanding of ZnO NPs/MPs as antibiotic alternatives and aid in further development of antibiotic agents for industrial and clinical applications.

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Section: Antimicrobial Ctivity Against Pathogenic Microorganismsmentioning

confidence: 99%

Section: Antimicrobial Ctivity Against Pathogenic Microorganismsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Antimicrobial Activity of Zinc Oxide Nano/Microparticles and Their Combinations against Pathogenic Microorganisms for Biomedical Applications: From Physicochemical Characteristics to Pharmacological Aspects

Jin

2021

Nanomaterials

123

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“…In recent years, nanomaterials in their different forms, shapes, and sizes have been discovered to be efficient in the removal of dye contaminants through photocatalytic activities [ 10 , 11 ]. This is attributed to their unique physicochemical properties such as their structures, high mechanical strength, high width-to-height ratio, high thermal and electrical conductivities, slight advantage metal/semi-metallic weight and behavior, and high surface area [ 12 , 13 , 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Fouda

Salem

Wassel

et al. 2020

Heliyon

167

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Herein, CuO/ZnO nanocomposites at different ratios were successfully synthesized through a green biosynthesis approach. This was performed by harnessing the fungal-secreted enzymes and proteins during the sol-gel process for nanocomposites seed growth. All fabricated nanoparticles/nanocomposites were characterized using Fourier Transform Infra-Red (FT-IR) Spectroscopy, X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM-EDX) and X-ray Photoelectron Spectroscopy ( XPS) analyses. The photocatalytic degradation efficacy of the synthesized nanocomposites was evaluated using a cationic methylene blue (MB) dye as a model of reaction. Results obtained from the FT-IR and EDX analyses revealed that CuO-NPs, ZnO-NPs, CuO/ZnO 50/50 , CuO/ZnO 80/20, and CuO/ZnO 20/80 were successfully prepared by harnessing the biomass filtrate of Penicillium corylophilum As-1. Furthermore, XRD and TEM revealed the variation in the particle size of the nanocomposites (10–55 nm) with the ratio of the nanoparticles. Notably, the size of the nanocomposites was proportionally increased with an increasing ratio of ZnO-NPs. XPS analysis affirmed the presence of both Cu and Zn in the nanocomposites with varying binding energies compared with individual nanoparticles. Furthermore, a high photo-degradation efficacy was achieved by increasing the ratio of ZnO-NPs in the nanocomposite formulation, and 97% of organic MB dye was removed after 85 min of irradiation using the CuO/ZnO 20/80 nanocomposite.

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“…On the one hand, TiO 2 is the most popular photocatalyst; nevertheless, it has low sensitivity to the visible light spectrum. On the other hand, zinc oxide (ZnO) is also inexpensive, but has high activity as a photocatalyst in visible light [ 15 ]. This oxide has a band gap energy (3.2 eV) similar to that of TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

et al. 2020

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Currently, the study of semiconductor materials is very promising for the photocatalytic remediation of hazardous organic substances present in the air and water. Various semiconductors have been investigated in this interesting photo-assisted methodology, among them metal oxides such as ZnO, TiO2 and their derivatives. In this study, ZnTiO3/TiO2 was synthesized by the sol-gel method using Ti(OC3H7)4 and Zn(CH3COO)2 · 2H2O as reagents. The role of several conditions such as synthesis temperature and TiO2:ZnO proportion on the morphology and purity of compounds obtained was studied, and the suitable conditions for the synthesis of photocatalysts were determined. Various techniques were used to conduct a systematic investigation on the structural, morphological, and photocatalytic properties of ZnTiO3/TiO2. Scanning Electron Microscopy (SEM) images show that ZnTiO3/TiO2 have a typical particle size of approximately 100 nm with a quasi-spherical shape. The adsorption and photocatalytic activity were investigated by the decolorization of Methylene Blue (MB) as an organic contaminant under UV irradiation both in TiO2 and ZnTiO3/TiO2 supported over some Ecuadorian clays. The materials evaluated were prepared in the shape of 0.2 cm (diameter) and 1.0 cm (length) cylindrical extrudates. The degradation percentage of MB obtained was 85% approximately after 150 min of irradiation. The results obtained allow us to conclude that these synthesized materials can be used as adsorbents and photocatalysts.

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The effect of shape and size of ZnO nanoparticles on their antimicrobial and photocatalytic activities: a green approach

Cited by 122 publications

References 27 publications

Antimicrobial Activity of Zinc Oxide Nano/Microparticles and Their Combinations against Pathogenic Microorganisms for Biomedical Applications: From Physicochemical Characteristics to Pharmacological Aspects

Antimicrobial Activity of Zinc Oxide Nano/Microparticles and Their Combinations against Pathogenic Microorganisms for Biomedical Applications: From Physicochemical Characteristics to Pharmacological Aspects

Optimization of green biosynthesized visible light active CuO/ZnO nano-photocatalysts for the degradation of organic methylene blue dye

Synthesis of the ZnTiO3/TiO2 Nanocomposite Supported in Ecuadorian Clays for the Adsorption and Photocatalytic Removal of Methylene Blue Dye

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