Synthesis and characterization of high purity Ta2O5 nanoparticles by laser ablation and its antibacterial properties

Meidanchi, Alireza; Jafari, Azadeh

doi:10.1016/j.optlastec.2018.09.039

Cited by 39 publications

(16 citation statements)

References 42 publications

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“…Besides, the FTIR spectra of the investigated Hf x Ta y O z films presented in Figure 7 have also displayed the detection of Hf-O chemical bondings located at 424, 465, 512, 563, 32 and 623 cm –1 , 29 29 Ta–O chemical bondings at 524, 648, 42 , 43 1150, and 1184 cm –1 , 44 as well as Ta–O–Ta chemical bonding at 660 cm –1 . 45 45 Additional chemical bondings with regard to Ta–N and Ta–O–N were detected at 784 46 and 392.2 cm –1 47 as well as at 389.2 cm –1 , 47 47 respectively, for all of the investigated Hf x Ta y O z films. However, weakening of peaks with regard to Ta–N and Ta–O–N was discerned when the wet oxidation temperature was enhanced to 1000 °C, which was in accordance with earlier explanation pertaining to the desorption of nitrogen to react with either H + ions or H 2 gas to form the N–H complex at 1000 °C.…”

Section: Resultsmentioning

confidence: 91%

Growth and Characterization of Ternary Hf_xTa_yO_z Films via Nitrogen-Infused Wet Oxidation

et al. 2020

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Nitrogen-infused wet oxidation at different temperatures (400–1000 °C) was employed to transform tantalum–hafnia to hafnium-doped tantalum oxide films. High-temperature wet oxidation at 1000 °C marked an onset of crystallization occurring in the film, accompanied with the formation of an interfacial oxide due to a reaction between the inward-diffusing hydroxide ions, which were dissociated from the water molecules during wet oxidation. The existence of nitrogen has assisted in controlling the interfacial oxide formation. However, high-temperature oxidation caused a tendency for the nitrogen to desorb and form N–H complex after reacting with the hydroxide ions. Besides, the presence of N–H complex implied a decrease in the passivation at the oxide–Si interface by hydrogen. As a consequence, defect formation would happen at the interface and influence the metal–oxide–semiconductor characteristics of the samples. In comparison, tantalum–hafnia subjected to nitrogen-infused wet oxidation at 600 °C has obtained the highest dielectric constant, the largest band gap, and the lowest slow trap density.

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Section: Resultsmentioning

confidence: 91%

Growth and Characterization of Ternary Hf_xTa_yO_z Films via Nitrogen-Infused Wet Oxidation

et al. 2020

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“…The experimental results also showed that the Ta 2 O 5 coating had a certain bactericidal ability, with an antibacterial rate of 30.1± 5%. The antibacterial activity of Ta 2 O 5 coating was related to its amorphous structure [84] and the release of Ta 5+ ions [85]. At present, there are very few studies on the antibacterial mechanism of Ta 2 O 5 , and detailed work needs to be carried out.…”

Section: Resultsmentioning

confidence: 99%

The Preparation and Properties of Multilayer Cu-MTa2O5 Composite Coatings on Ti6Al4V for Biomedical Applications

et al. 2019

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For the enhancement of the anticorrosion and antibacterial performance of the biomedical alloy Ti6Al4V, a novel Cu incorporated multilayer Ta2O5ceramic composite coating Cu-Ta2O5/Ta2O5/Ta2O5-TiO2/TiO2/Ti (coating codeCu-MTa2O5) was developed by radio frequency (RF) and direct current (DC) reactive magnetron sputtering. Meanwhile, to better display the multilayer Ta2O5 coating mentioned above, a monolayer Ta2O5 ceramic coating was deposited onto the surface of Ti6Al4V alloy as a reference. The surface morphology, microstructure, phase constituents, and elemental states of the coating were evaluated by atomic force microscopy, scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy, respectively. The adhesion strength, wettability, anticorrosion and antibacterial properties of the coating were examined by a scratch tester, contact angle measurement, electrochemical workstations, and plate counting method, respectively. The results showed that the deposited coatings were amorphous and hydrophobic. Cu doped into the Ta2O5 coating existed as CuO and Cu2O. A Ta2O5-TiO2/TiO2/Ti multi-interlayer massively enhanced the adhesion strength of the coating, which was 2.9 times stronger than that of the monolayer Ta2O5coating. The multilayer Cu-MTa2O5 coating revealed a higher corrosion potential and smaller corrosion current density as compared to the uncoated Ti6Al4V, indicating the better anticorrosion performance of Ti6Al4V. Moreover, a 99.8% antibacterial effect of Cu-MTa2O5 coated against Staphylococcus aureuswas obtained.

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“…Microorganisms (references). a: E. coli (Ahmad et al 2018;Jiang et al 2009;Karthik et al 2017;Kaviya et al 2011;Kaviyarasu et al 2017a, b, c;Kennedy et al 2017;Kim et al 2007;Maria Magdalane et al 2018;Meidanchi and Jafari 2019;Mobeen Amanulla et al 2018;Morones et al 2005;Nair et al 2009;Nwanya et al 2019;Padmavathy and Vijayaraghavan 2008;Pal et al 2007;Simo et al 2018;Simon-Deckers et al 2009;Sondi and Salopek-Sondi 2004;Webster and Seil 2012;Yoon et al 2007;Zhang et al 2019). b: S. aureus (Ahmad et al 2018;Jiang et al 2009;Jones et al 2008;Karthik et al 2017;Kaviya et al 2011;Kaviyarasu et al 2017a, b, c;Kennedy et al 2017;Kim et al 2007;Maria Magdalane et al 2018;McCarthy et al 1992;Mobeen Amanulla et al 2018;Nair et al 2009;Nwanya et al 2019;Reddy et al 2007;Salomoni et al 2015;Simo et al 2018;Tran et al 2010;Webster and Seil 2012;Zhang et al 2019).…”

Section: Input Parametersmentioning

confidence: 99%

Modelling Nanoparticles Parameters for Antimicrobial Activity

Razanamahandry

Ntwampe

Bashir

et al. 2020

Model Organisms to Study Biological Activities and Toxicity of Nanoparticles

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The current study reveals the antimicrobial activity of various nanoparticles (NPs) against numerous microorganisms through statistical models that define suitable parameters to improve the antimicrobial efficacy of NPs. The antimicrobial data on NPs were collected from previously published studies, focusing on parameters such as the NPs type and size (nm), microbial strains and their initial density

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Synthesis and characterization of high purity Ta2O5 nanoparticles by laser ablation and its antibacterial properties

Cited by 39 publications

References 42 publications

Growth and Characterization of Ternary Hf_xTa_yO_z Films via Nitrogen-Infused Wet Oxidation

Growth and Characterization of Ternary Hf_xTa_yO_z Films via Nitrogen-Infused Wet Oxidation

The Preparation and Properties of Multilayer Cu-MTa2O5 Composite Coatings on Ti6Al4V for Biomedical Applications

Modelling Nanoparticles Parameters for Antimicrobial Activity

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Synthesis and characterization of high purity Ta2O5 nanoparticles by laser ablation and its antibacterial properties

Cited by 39 publications

References 42 publications

Growth and Characterization of Ternary HfxTayOz Films via Nitrogen-Infused Wet Oxidation

Growth and Characterization of Ternary HfxTayOz Films via Nitrogen-Infused Wet Oxidation

The Preparation and Properties of Multilayer Cu-MTa2O5 Composite Coatings on Ti6Al4V for Biomedical Applications

Modelling Nanoparticles Parameters for Antimicrobial Activity

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Growth and Characterization of Ternary Hf_xTa_yO_z Films via Nitrogen-Infused Wet Oxidation

Growth and Characterization of Ternary Hf_xTa_yO_z Films via Nitrogen-Infused Wet Oxidation