Titanium-based photocatalytic coatings for bacterial disinfection: The shift from suspended powders to catalytic interfaces

Hosseini, Farnaz; Assadi, Aymen Amine; Nguzen-Tri, Phuong; Ali, Imran; Rtimi, Sami

doi:10.1016/j.surfin.2022.102078

Cited by 10 publications

(2 citation statements)

References 254 publications

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“…Many studies have reported the application of titanium dioxide photocatalysts for water disinfection [83][84][85][86][87]. The investigation of antibacterial activity of TiO 2 -Cu coating using Escherichia coli showed that the survival rate decreased under very weak UV illumination intensity of 1 µW/cm 2 , suggesting impressive photocatalytic bactericidal activity [88][89][90][91]. Chen et al evaluated the antibacterial effect of M-TiO 2 (M = Ag, Pd, Au, Pt) against E. coli [85].…”

Section: Antimicrobial Activity Of Oxides and Oxynitride Photocatalyt...mentioning

confidence: 99%

Magnetron Sputtering of Transition Metal Nitride Thin Films for Environmental Remediation

et al. 2022

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The current economic and ecological situation encourages the use of steel to push the technological limits and offer more cost-effective products. The enhancement of steel properties like wear, corrosion, and oxidation resistance is achieved by the addition of small amounts of chemical elements such as Cr, Ni, Si, N, etc. The steel surface can be protected by different treatments such as heating and coating, among others. For many decades, coatings have been an effective solution to protect materials using thin hard films. Several technologies for thin film deposition have been developed. However, some of them are restricted to certain fields because of their complex operating conditions. In addition, some deposition techniques cannot be applied to a large substrate surface type. The magnetron sputtering deposition process is a good option to overcome these challenges and can be used with different substrates of varying sizes with specific growth modes and for a wide range of applications. In this review article, we present the sputtering mechanism and film growth modes and focus on the mechanical and tribological behavior of nitride thin films deposited by the magnetron sputtering technique as a function of process conditions, particularly bias voltage and nitrogen percentage. The biomedical properties of transition metal nitride coatings are also presented.

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Section: Antimicrobial Activity Of Oxides and Oxynitride Photocatalyt...mentioning

confidence: 99%

Magnetron Sputtering of Transition Metal Nitride Thin Films for Environmental Remediation

et al. 2022

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“…For the last two decades, HP has also been widely investigated for water disinfection, showing potential for treatment through oxidative stress caused by ROS, Gram positive and negative bacteria, DNA and RNA viruses, and even algae [31]. ROS can attack cell membrane components, altering cell integrity, which results in a cytoplasm leakage [32]; they can inhibit required cell activities such as protein synthesis [33]; they can also break organic covalent bonds present in biomolecules [34].…”

Section: Introductionmentioning

confidence: 99%

Arsenite to Arsenate Oxidation and Water Disinfection via Solar Heterogeneous Photocatalysis: A Kinetic and Statistical Approach

Silerio-Vázquez

Núñez-Núñez

Proal-Nájera

et al. 2022

Water

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Arsenic (As) poses a threat to human health. In 2014, more than 200 million people faced arsenic exposure through drinking water, as estimated by the World Health Organization. Additionally, it is estimated that drinking water with proper microbiological quality is unavailable for more than 1 billion people. The present work analyzed a solar heterogeneous photocatalytic (HP) process for arsenite (AsIII) oxidation and coliform disinfection from a real groundwater matrix employing two reactors, a flat plate reactor (FPR) and a compound parabolic collector (CPC), with and without added hydrogen peroxide (H2O2). The pseudo first-order reaction model fitted well to the As oxidation data. The treatments FPR–HP + H2O2 and CPC–HP + H2O2 yielded the best oxidation rates, which were over 90%. These treatments also exhibited the highest reaction rate constants, 6.7 × 10−3 min−1 and 6.8 × 10−3 min−1, respectively. The arsenic removal rates via chemical precipitation reached 98.6% and 98.7% for these treatments. Additionally, no coliforms were detected at the end of the process. The collector area per order (ACO) for HP treatments was on average 75% more efficient than photooxidation (PO) treatments. The effects of the process independent variables, H2O2 addition, and light irradiation were statistically significant for the AsIII oxidation reaction rate (p < 0.05).

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Nanomaterials photocatalytic activities for waste water treatment: a review

Singh

Mohan²,

Madaan³

et al. 2022

Environ Sci Pollut Res

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Titanium-based photocatalytic coatings for bacterial disinfection: The shift from suspended powders to catalytic interfaces

Cited by 10 publications

References 254 publications

Magnetron Sputtering of Transition Metal Nitride Thin Films for Environmental Remediation

Magnetron Sputtering of Transition Metal Nitride Thin Films for Environmental Remediation

Arsenite to Arsenate Oxidation and Water Disinfection via Solar Heterogeneous Photocatalysis: A Kinetic and Statistical Approach

Nanomaterials photocatalytic activities for waste water treatment: a review

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