Study of bactericidal efficiency of magnetron sputtered TiO2 films deposited at varying oxygen partial pressure

Panda, Alaka; Laha, Pinaki; Harish, K. N.; Sarkar, Bikash Kanti; Chaure, Shweta; Sayyad, Wasim A.; Jadhav, Vijay S.; Kulkarni, G. N.; Sasmal, D.; Barhai, P.K.; Das, Sudip Kumar; Mahapatra, S. K.; Banerjee, Indrani

doi:10.1016/j.surfcoat.2010.07.101

Cited by 24 publications

(13 citation statements)

References 33 publications

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“…In this study, however, the The Ti XPS signal comprised two peaks, i.e., weak Ti2p1/2 and strong Ti2p3/2 ( Figure 6). Previous studies reported that each peak was decomposed into three sub-peaks, with components of Ti 4+ , Ti 3+ , and Ti 2+ , respectively: Ti 4+ (2p1/2 at ~464.5 eV, 2p3/2 at ~458.9 eV), Ti 3+ (2p1/2 at ~462.8 eV, 2p3/2 at ~457.3 eV), and Ti 2+ (2p1/2 at ~460.9 eV, 2p3/2 at ~455.6 eV) [23,39]. In this study, however, the Ti2p1/2 and Ti2p3/2 XPS peaks were mainly located at 464.2 and 458.5 eV, respectively.…”

Section: X-ray Photoelectron Spectroscopy Of Timentioning

confidence: 99%

X-ray Photoelectron Spectroscopy Analysis of Nitrogen-Doped TiO2 Films Prepared by Reactive-Ion-Beam Sputtering with Various NH3/O2 Gas Mixture Ratios

2020

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Nitrogen-doped TiO2 films were prepared by reactive ion-beam sputtering deposition (IBSD) in a mixed atmosphere of NH3 and O2 at a substrate temperature of 400 °C. X-ray photoelectron spectra revealed the presence of six ions, i.e., N3−, N2−, N1−, N+, N2+, and N3+, respectively, in the films. The amorphous films had complex, randomly oriented chemical bonds. The Tauc–Lorentz model was employed to determine the bandgap energy of the amorphous films prepared using different NH3/O2 gas mixing ratios by ellipsometry. In addition, the optical constants of the films were measured. With the increase in the NH3/O2 gas mixture ratio to 3.0, the bandgap of N-doped TiO2 narrowed to ~2.54 eV.

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Section: X-ray Photoelectron Spectroscopy Of Timentioning

confidence: 99%

X-ray Photoelectron Spectroscopy Analysis of Nitrogen-Doped TiO2 Films Prepared by Reactive-Ion-Beam Sputtering with Various NH3/O2 Gas Mixture Ratios

2020

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“…coli cells were examined before and after exposure to SZ. Samples (5µL) were dropped or smeared on pre-sterilized silicon substrates and air dried under sterile conditions with no further fixing done [28]. The samples were painted with high purity silver, gold coated to improve conductivity and analysed using a JEOL JSM-7100F Field Emission Scanning Electron Microscope (SEM) equipped with an Energy Dispersive X-ray Detector (EDX).…”

Section: Scanning Electron Microscopymentioning

confidence: 99%

Disinfection and removal performance for Escherichia coli and heavy metals by silver-modified zeolite in a fixed bed column

Akhigbe

Ouki

Saroj

2016

Chemical Engineering Journal

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“…The second curve at a binding energy of 531.80 eV is due to the hydroxyl group (OH – ) on the TiO 2 surface. The third peak at 533.12 eV is assigned to oxygen of an atmospheric water molecule adsorbed on the TiO 2 thin films …”

Section: Resultsmentioning

confidence: 99%

Photoelectrocatalysis of Cefotaxime Using Nanostructured TiO₂ Photoanode: Identification of the Degradation Products and Determination of the Toxicity Level

Kondalkar¹,

Mali²,

Mane³

et al. 2014

Ind. Eng. Chem. Res.

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Nanostructured TiO 2 thin films were fabricated via a facile, economical, and energy-efficient microwave-assisted dip-coating (MWDC) technique. Further, the resulting TiO 2 films were characterized by means of X-ray diffraction, highresolution transmission electron microscopy, selected-area electron diffraction, Fourier transform Raman spectroscopy, X-ray photoelectron spectroscopy, and photoluminescence spectroscopy techniques for their phase structure, morphology, and optical and surface properties. TiO 2 -mediated photoelectrocatalytic degradation of the antibiotic cefotaxime (CFX) in an aqueous solution was studied by varying the pH under UV illumination. The degradation intermediates and possible reaction degradation path of CFX were analyzed by electrospray ionization time-of-flight mass spectrometry (MS). The MS spectra revealed that degradation of CFX occurs through β-lactum corresponding to the cleavage of the cephem nucleus. Moreover, the antibacterial activity of CFX prior to and after photoelectrocatalytic degradation was carried out to analyze the toxicity against Staphylococcus aureus and salmonella typhi bacteria. Interestingly, it was observed that the antibiotic activity was drastically inhibited after photoelectrocatalytic degradation of the CFX solution. The photoelectrocatalytic stability of a nanostructured TiO 2 electrode was evaluated by recycling the degradation experiments. It was observed that there was no significant decrease in the catalytic activity, indicating potential applications of the TiO 2 electrode prepared by the MWDC method.

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Study of bactericidal efficiency of magnetron sputtered TiO2 films deposited at varying oxygen partial pressure

Cited by 24 publications

References 33 publications

X-ray Photoelectron Spectroscopy Analysis of Nitrogen-Doped TiO2 Films Prepared by Reactive-Ion-Beam Sputtering with Various NH3/O2 Gas Mixture Ratios

X-ray Photoelectron Spectroscopy Analysis of Nitrogen-Doped TiO2 Films Prepared by Reactive-Ion-Beam Sputtering with Various NH3/O2 Gas Mixture Ratios

Disinfection and removal performance for Escherichia coli and heavy metals by silver-modified zeolite in a fixed bed column

Photoelectrocatalysis of Cefotaxime Using Nanostructured TiO₂ Photoanode: Identification of the Degradation Products and Determination of the Toxicity Level

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Study of bactericidal efficiency of magnetron sputtered TiO2 films deposited at varying oxygen partial pressure

Cited by 24 publications

References 33 publications

X-ray Photoelectron Spectroscopy Analysis of Nitrogen-Doped TiO2 Films Prepared by Reactive-Ion-Beam Sputtering with Various NH3/O2 Gas Mixture Ratios

X-ray Photoelectron Spectroscopy Analysis of Nitrogen-Doped TiO2 Films Prepared by Reactive-Ion-Beam Sputtering with Various NH3/O2 Gas Mixture Ratios

Disinfection and removal performance for Escherichia coli and heavy metals by silver-modified zeolite in a fixed bed column

Photoelectrocatalysis of Cefotaxime Using Nanostructured TiO2 Photoanode: Identification of the Degradation Products and Determination of the Toxicity Level

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Photoelectrocatalysis of Cefotaxime Using Nanostructured TiO₂ Photoanode: Identification of the Degradation Products and Determination of the Toxicity Level