Ag/TiO2 nanocomposite for visible light-driven photocatalysis

Sanzone, G.; Zimbone, Massimo; Cacciato, G.; Ruffino, F.; Carles, R.; Privitera, V.; Grimaldi, Maria Grazia

doi:10.1016/j.spmi.2018.09.028

Cited by 125 publications

(39 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a consequence, the enhancement of the catalytic activity of TiO 2 within the visible zone of the solar spectrum has received a great deal of attention by the scientific community in recent years. Different strategies have been followed to improve the photocatalytic properties of TiO 2 under visible irradiation, such as surface modification with organic molecules [162] or nanoparticles [163,164] or doping with metal [163,[165][166][167] and non-metal [165,168,169] ions, among others.…”

Section: The Tio 2 /Uv Systemmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

478

240

View full text Add to dashboard Cite

In this work, the application of advanced oxidation processes (AOPs) for the removal of antibiotics from water has been reviewed. The present concern about water has been exposed, and the main problems derived from the presence of emerging pollutants have been analyzed. Photolysis processes, ozone-based AOPs including ozonation, O3/UV, O3/H2O2, and O3/H2O2/UV, hydrogen peroxide-based methods (i.e., H2O2/UV, Fenton, Fenton-like, hetero-Fenton, and photo-Fenton), heterogeneous photocatalysis (TiO2/UV and TiO2/H2O2/UV systems), and sonochemical and electrooxidative AOPs have been reviewed. The main challenges and prospects of AOPs, as well as some recommendations for the improvement of AOPs aimed at the removal of antibiotics from wastewaters, are pointed out.

show abstract

Section: The Tio 2 /Uv Systemmentioning

confidence: 99%

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Cuerda-Correa

Alexandre-Franco

Fernández-González

2019

Water

478

240

View full text Add to dashboard Cite

show abstract

“…The significantly faster effect of this component composition of thin films as well as overcoming the resistance of the highly adaptive Pseudomonas DSM50026 can be explained by the structure of the nanocomposite films. The doping of TiO 2 with Ag and Cu nanoparticles improved the photoresponse and photocurrent density of TiO 2 into the visible light region [21][22][23]. Other authors proved the several mechanisms of action of silver [17,18] and copper nanoparticles [16,20,21,24].…”

Section: Discussionmentioning

confidence: 98%

Antibacterial effect of TiO₂:Cu:Ag thin coatings on Pseudomonas strain measured by microbiological and ATP assays

et al. 2019

View full text Add to dashboard Cite

The aim of this study is to investigate the antimicrobial properties of nanocomposite thin TiO2:Cu:Ag films on Pseudomonas putida as a natural isolate and an opportunistic pathogen. Several different methods were used to compare the antibacterial effect of thin TiO2:Cu:Ag layers obtained by radiofrequency magnetron sputter deposition against P. putida: optical density of the bacterial suspension, most probable number of survived cells, dehydrogenase activity inhibition, scanning electron microscopy images, atomic flame absorption spectroscopy, and adenosine triphosphate (ATP) luminescent assay. Optical density measurements and most probable plate count were in agreement and showed a strong bactericidal effect of the as‐deposited and only bacteriostatic effect of the annealed coatings with the same metal content on tested bacteria. As the metal quantity in the medium rises during the first hour of the experiment, it could be suggested that this is the main reason for cell death. ATP‐luminescent assay showed up to 18‐fold reduction of the signal. It was compared with other microbiological and biochemical assays to prove the strong antibacterial effect of nanocomposite thin TiO2:Cu:Ag coatings with the possibilities of medical applications. Protection of medical devices against infections is a significant current challenge raised by an increasing number of medical devices‐associated infections and microbial resistance to conventional antibiotic and multidrug treatments. Deposition of antimicrobial coatings is one of the current approaches to mitigate the problem.

show abstract

“…After that, charge carriers can migrate from the bulk [28,29] to the surface of the material. When this occurs in an aqueous medium, dissolved oxygen can be adsorbed [30,[30][31][32] on the surface of the photocatalyst and reduced by elec-trons, giving rise to superoxide radical anions, O2 − (Eq. 1), while holes can oxidize water as well as hydroxyl anions, producing hydroxyl radicals, HO (Eqs.…”

Section: Determination Of the Optimum Weight Of N-doped Tio 2 Catalysmentioning

confidence: 99%

Photocatalytic degradation of Direct Yellow-27 by photolysis with UV-light and solar irradiation Using N-doped TiO2

Deliza¹,

Safni²,

Wellia³

et al. 2019

KEG

View full text Add to dashboard Cite

show abstract

Ag/TiO2 nanocomposite for visible light-driven photocatalysis

Cited by 125 publications

References 46 publications

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Antibacterial effect of TiO₂:Cu:Ag thin coatings on Pseudomonas strain measured by microbiological and ATP assays

Photocatalytic degradation of Direct Yellow-27 by photolysis with UV-light and solar irradiation Using N-doped TiO2

Contact Info

Product

Resources

About

Ag/TiO2 nanocomposite for visible light-driven photocatalysis

Cited by 125 publications

References 46 publications

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Advanced Oxidation Processes for the Removal of Antibiotics from Water. An Overview

Antibacterial effect of TiO2:Cu:Ag thin coatings on Pseudomonas strain measured by microbiological and ATP assays

Photocatalytic degradation of Direct Yellow-27 by photolysis with UV-light and solar irradiation Using N-doped TiO2

Contact Info

Product

Resources

About

Antibacterial effect of TiO₂:Cu:Ag thin coatings on Pseudomonas strain measured by microbiological and ATP assays