Structural, optical and enhanced antibacterial activities of ZnO and (Co, Fe) co-doped ZnO nanoparticles by sol-gel combustion method

Kejela, Wubishet; Taddesse, Paulos

doi:10.1016/j.cplett.2022.139519

Cited by 17 publications

(11 citation statements)

References 60 publications

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“…This is due to the nanocrystalline size effect of samples. 6,14,19 It is found that the value of APF was decreased after doping (Fig. 2d).…”

Section: Resultsmentioning

confidence: 84%

“…1 These attractive physical properties give this oxide several potential applications in optoelectronics such as ultraviolet (UV) photodetectors, transparent electrodes, gas sensors, photocatalytic and antibacterial activities. [2][3][4][5][6] Doping by transition metal (TM) elements such as Fe, Co, Mn, Ni, and Mg is an efficient technique for improving the properties of zinc oxide and its performances in different applications. [7][8][9][10][11][12] Among several elements for doping of ZnO, iron (Fe) is a suitable dopant not for spintronic devices only, but also in optoelectronic applications.…”

mentioning

confidence: 99%

“…Several researches group have investigated the properties and applications of Fe-doped ZnO nanopowders synthesized by different methods. For instance, tolossa et al 6 and alnehia et al 13 reported that Fe doping influenced the optical and structural properties and enhanced the antibacterial activities of ZnO nanoparticles. Saadi et al 14 and Virdian et al 15 indicated that Fe doping enhanced the optical and conductivity of ZnO nanoparticles and films.…”

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confidence: 99%

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Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Mahroug

Berra

et al. 2023

ECS J. Solid State Sci. Technol.

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Pure and iron-doped ZnO films were deposited by thermal oxidation of sputtered metallic zinc and iron. The effect of iron (Fe) doping on the optical, morphology, structural, electrical, and photocurrent properties of zinc oxide films was examined. X-ray diffraction analysis shows a wurtzite structure with preferential orientation for all films. Fe doping reduced the crystallite size. The different calculated structure parameters confirm the incorporation of Fe (Fe3+) in the ZnO lattice. The surface morphology of thin films measured using atomic force microscopy revealed that the Fe doping could markedly decrease the grains size and the root mean square roughness of films. For all films, the transmittance analysis shows a transmittance above 90% in the visible region and with an increase in the Fe concentration, the transmittance, the absorption in the UV region, and the gap of ZnO were increased. The effect of Fe doping on different optical parameters was discussed in detail. The photoluminescence analysis of pure and doped ZnO exhibits one ultraviolet emission (384 nm) and green emission. Compared to pure ZnO, the ultraviolet peak intensity decreased as Fe content increased. The electrical resistivity was decreased and the photocurrent properties of ZnO were enhanced by Fe doping.

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“…This is due to the nanocrystalline size effect of samples. 6,14,19 It is found that the value of APF was decreased after doping (Fig. 2d).…”

Section: Resultsmentioning

confidence: 84%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Mahroug

Berra

et al. 2023

ECS J. Solid State Sci. Technol.

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“…These activities may be related to different mechanisms, such as reducing crystallinity/particle size, releasing positively charged metal ions (electrostatic interaction), and producing ROS and so forth as described previously. 78 The potency of antimicrobial activity in our work may be related to releasing positively charged metal ions (electrostatic interaction) and producing ROS. Electrostatic interaction may appear because of doping the ZnO (bivalent) with metal with trivalent as La +3 and Sm +3 .…”

Section: Minimum Inhibitory Concentration (Mic) and Minimal Bacterici...mentioning

confidence: 87%

Photocatalytic activity of co‐doped NPs based on ZnO as a new class of anti‐microbial agents: Synthesis, characterization, kinetics, isotherm, and in silico molecular docking simulation

Basseem,

Emam,

Kamal

et al. 2023

Applied Organom Chemis

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This work effectively synthesized pure ZnO (PZ) and the co‐doped ZnO as Sm‐La CDZ NPs, La‐Sr CDZ NPs, and Sm‐Sr CDZ NPs using a hydrothermal technique. To characterize synthetic nanomaterials used, several techniques, including X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectra, ultraviolet and visible (UV/Vis), photoluminescence (PL), scanning electron microscopy (SEM), and graphs by energy dispersive X‐ray spectroscopy (XPS), Zeta potential, point of (pHpzc), and specific surface areas. Furthermore, the XRD, SEM, and TEM confirmed the hexagonal crystalline structure. However, XPS and EDX showed that Sm3+, La3+, and Sr2+ ions integrated into the ZnO lattice. The UV‐estimated band gaps increased in the co‐doped ZnO; BET surface areas declined. The Zeta potential proved the positivity surface charge of nanomaterials. Consequently, they utilized it to investigate the breakdown of reactive red 43 (RR43). The degradation percentages for PZ, Sm‐La CDZ NPs, La‐Sr CDZ NPs, and Sm‐Sr CDZ NPs were 72.88%, 82.63%, 87.08%, and 91.31%, respectively. According to the results, the Sm‐Sr CDZ NPs exhibit high photocatalytic activity. In addition, the pseudo‐first‐order kinetic model and Langmuir model were a better fit. The photocatalytic nanomaterials were also recyclable, which added to their stability. The prepared nanoparticles were evaluated against four bacterial strains and two fungal pathogenic, and the result exhibited a broad spectrum against tested strains. The co‐doped NPs revealed MIC values ranging between1.95 and 62.5 μg/mL and MBC values of (31.3–250 μg/mL) compared with PZ (MIC = 7.81–62.5 μg/mL and MBC = 31.3–250 μg/mL) against bacterial strains. Surprisingly, most of these NPs expressed bacteriocidal and fungicidal potential. In silico molecular docking simulation suggested that the antibacterial activity may be related to the inhibition of DNA gyrase, cell wall synthesis (Upps and Fos A), and biofilm activity (PqsR).

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“…To address these limitations, one of the promising ways is the doping of transition metals (TMs) into the ZnO photocatalyst. In such ambition, various TMs such as the copper (Cu), cobalt (Co), nickel (Ni), and silver (Ag) are inserted into the host lattice for the improvement of its applications [18][19][20][21][22][23]. Besides these metal dopants, chromium (Cr) has its due importance for the close resemblance of host Zn atoms in many aspects [24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Facile and Novel Route for the Preparation of ZnO Nanoparticles with Different Cr Loadings for Opto-Photocatalysis Applications

Bawazeer

2022

Catalysts

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The current article deals with the facile yet novel route to prepare zinc oxide (ZnO) nanoparticles with different weight percentages of chromium as a dopant. The impact of such dopant into the ZnO host lattice is explored in terms of the structural, vibrational, optical, and photocatalytic characteristics. The Bragg reflections in the X-ray diffraction displayed a phase pure wurtzite ZnO hexagonal system. The morphology reflects spherical-shaped ZnO particles in all the systems. The optical analysis ensured a good ultraviolet light absorption and a bandgap energy in the range of 3.30–3.24 eV. The principal Raman vibrations ensured the presence of the wurtzite ZnO crystal structure. The decolorization experiment of methyl green dye with pristine and various chromium-doped ZnO nanoparticles was conducted under the illumination of visible light. The obtained results showed that the incorporation of Cr in the framework significantly improved the photocatalytic performance of ZnO.

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Structural, optical and enhanced antibacterial activities of ZnO and (Co, Fe) co-doped ZnO nanoparticles by sol-gel combustion method

Cited by 17 publications

References 60 publications

Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Optical, Photocurrent, Electrical, Structural, and Morphological Properties of Magnetron Sputtered Pure and Iron-Doped Zinc Oxide Thin Films

Photocatalytic activity of co‐doped NPs based on ZnO as a new class of anti‐microbial agents: Synthesis, characterization, kinetics, isotherm, and in silico molecular docking simulation

Facile and Novel Route for the Preparation of ZnO Nanoparticles with Different Cr Loadings for Opto-Photocatalysis Applications

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