The role of Sn–Fe co-doping on the atomic structure, phase transformation and antibacterial activity of TiO<sub>2</sub> nanoparticles

Hosseini, Maryam; Abad, Sajjad Nasiri Khalil; Ilkhechi, Nasrollah Najibi; Mozammel, Mahdi; Eftekhari, Nazenin

doi:10.1088/2053-1591/ab4017

Cited by 15 publications

(7 citation statements)

References 36 publications

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“…The adhesion between the two surfaces is stronger due to the surface roughness, which in turns stimulate the photocatalyst attachment to bacterial cell thus the photocatalysts penetrates the cell structure and ultimately leads to cell death. These findings are supported by molecular docking studies, where strong evidence of Studies have shown that material with smaller particle size helps to generate more ROS responsible for cytoplasmic constituent extrusion [59]. Furthermore, co-doping TiO 2 with metal or non-metal exhibits excellent photo-biocidal activity [60].…”

Section: Photocatalytic Disinfection Performance Evaluationmentioning

confidence: 74%

“…Studies have shown that material with smaller particle size helps to generate more ROS responsible for cytoplasmic constituent extrusion [ 59 ]. Furthermore, co-doping TiO 2 with metal or non-metal exhibits excellent photo-biocidal activity [ 60 ].…”

Section: Resultsmentioning

confidence: 99%

“…These findings are supported by molecular docking studies, where strong evidence of considered in these studies, including calcination temperature, a form of dopant (in the present case nitrogen) and improvement of physicochemical properties such as size, shape and specific surface area. Studies have shown that material with smaller particle size helps to generate more ROS responsible for cytoplasmic constituent extrusion [59]. Furthermore, co-doping TiO2 with metal or non-metal exhibits excellent photo-biocidal activity [60].…”

Section: Photocatalytic Disinfection Performance Evaluationmentioning

confidence: 99%

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Photocatalytic Decolorization and Biocidal Applications of Nonmetal Doped TiO2: Isotherm, Kinetic Modeling and In Silico Molecular Docking Studies

et al. 2020

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Textile dyes and microbial contamination of surface water bodies have been recognized as emerging quality concerns around the globe. The simultaneous resolve of such impurities can pave the route for an amicable technological solution. This study reports the photocatalytic performance and the biocidal potential of nitrogen-doped TiO2 against reactive black 5 (RB5), a double azo dye and E. coli. Molecular docking was performed to identify and quantify the interactions of the TiO2 with β-lactamase enzyme and to predict the biocidal mechanism. The sol-gel technique was employed for the synthesis of different mol% nitrogen-doped TiO2. The synthesized photocatalysts were characterized using thermal gravimetric analysis (TGA), scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET) and diffuse reflectance spectroscopy (DRS). The effects of different synthesis and reaction parameters were studied. RB5 dye degradation was monitored by tracking shifts in the absorption spectrum and percent chemical oxygen demand (COD) removal. The best nanomaterial depicted 5.57 nm crystallite size, 49.54 m2 g−1 specific surface area, 11–40 nm particle size with spherical morphologies, and uniform distribution. The RB5 decolorization data fits well with the pseudo-first-order kinetic model, and the maximum monolayer coverage capacity for the Langmuir adsorption model was found to be 40 mg g−1 with Kads of 0.113 mg−1. The LH model yielded a higher coefficient KC (1.15 mg L−1 h−1) compared to the adsorption constant KLH (0.3084 L mg−1). 90% COD removal was achieved in 60 min of irradiation, confirmed by the disappearance of spectral peaks. The best-optimized photocatalysts showed a noticeable biocidal potential against human pathogenic strain E. coli in 150 min. The biocidal mechanism of best-optimized photocatalyst was predicted by molecular docking simulation against E. coli β-lactamase enzyme. The docking score (−7.6 kcal mol−1) and the binding interaction with the active site residues (Lys315, Thr316, and Glu272) of β-lactamase further confirmed that inhibition of β-lactamase could be a most probable mechanism of biocidal activity.

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Section: Photocatalytic Disinfection Performance Evaluationmentioning

confidence: 74%

Section: Resultsmentioning

confidence: 99%

Section: Photocatalytic Disinfection Performance Evaluationmentioning

confidence: 99%

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Photocatalytic Decolorization and Biocidal Applications of Nonmetal Doped TiO2: Isotherm, Kinetic Modeling and In Silico Molecular Docking Studies

et al. 2020

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“…7. The sample exhibits better reactivity toward negative bacterial strains of E.coli [59][60][61][62][63]. Free radicals produced in the surface of the semiconductor when irradiated with light are responsible for destroying the outer cell wall of the bacteria cultured.…”

Section: Antibacterial Activities Of the Prepared Samplesmentioning

confidence: 99%

Synthesis and characterization of Sn-doped TiO2 film for antibacterial applications

et al. 2021

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Simple sol-gel method has been exploited to deposit Sn-doped TiO 2 thin films on glass substrates. The resultant coatings were characterized by X-ray diffraction (XRD), UV-visible techniques (UV-Vis), Fourier transform infrared spectroscopy (FTIR), and photoluminescence analysis (PL). The XRD pattern reveals an increase in crystallite size of the prepared samples with the increasing doping concentration. A decrease in doping concentrating resulted in the decrease in bandgap values. The different chemical bonds on these films were identified from their FTIR spectra. The photoluminescence analysis shows an increase in the emission peak intensity with increasing dopant concentration, and this can be attributed to the effect created due to surface states. The prepared samples were tested as antibacterial agent toward both Gram-positive and Gram-negative bacteria like S.aureus (Staphylococcus aureus) and E.coli (Escherichia coli), respectively. The size of the inhibition zones indicates that the sample shows maximum inhibitory property toward E.coli when compared to S.aureus.

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“…[19][20][21] Sn is commonly used as an antibacterial catalyst with other metals, such as Cu-Sn, Sn-Bi, Sn-Fe, etc. [22][23][24] The mechanism of the antibacterial activity can be attributed to the following points: (1) the disruption of cell integrity caused by the direct contact between metallic nanoparticles and cell walls, (2) the formation of reactive oxygen species (ROS) • OH radicals which destroy the integrity of the cell membrane, and (3) the release of antibacterial metal ions. [25][26][27] ROS are a group of active molecules containing oxygen, such as hydroxyl radical ( • OH), superoxide radical ( • O 2…”

Section: Introductionmentioning

confidence: 99%

Bimetallic CoSn nanoparticles anchored on N-doped carbon as antibacterial oxygen reduction catalysts for microbial fuel cells

Li,

Liu,

Jiang

et al. 2023

Nanoscale

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The role of Sn–Fe co-doping on the atomic structure, phase transformation and antibacterial activity of TiO₂ nanoparticles

Cited by 15 publications

References 36 publications

Photocatalytic Decolorization and Biocidal Applications of Nonmetal Doped TiO2: Isotherm, Kinetic Modeling and In Silico Molecular Docking Studies

Photocatalytic Decolorization and Biocidal Applications of Nonmetal Doped TiO2: Isotherm, Kinetic Modeling and In Silico Molecular Docking Studies

Synthesis and characterization of Sn-doped TiO2 film for antibacterial applications

Bimetallic CoSn nanoparticles anchored on N-doped carbon as antibacterial oxygen reduction catalysts for microbial fuel cells

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The role of Sn–Fe co-doping on the atomic structure, phase transformation and antibacterial activity of TiO2 nanoparticles

Cited by 15 publications

References 36 publications

Photocatalytic Decolorization and Biocidal Applications of Nonmetal Doped TiO2: Isotherm, Kinetic Modeling and In Silico Molecular Docking Studies

Photocatalytic Decolorization and Biocidal Applications of Nonmetal Doped TiO2: Isotherm, Kinetic Modeling and In Silico Molecular Docking Studies

Synthesis and characterization of Sn-doped TiO2 film for antibacterial applications

Bimetallic CoSn nanoparticles anchored on N-doped carbon as antibacterial oxygen reduction catalysts for microbial fuel cells

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Product

Resources

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The role of Sn–Fe co-doping on the atomic structure, phase transformation and antibacterial activity of TiO₂ nanoparticles