Preparation, characterization and antibacterial properties of cobalt doped titania nanomaterials

Shi, Dai; Yang, He; Xue, Xiang

doi:10.1016/j.cjche.2020.03.017

Cited by 17 publications

(4 citation statements)

References 32 publications

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“…[4][5][6] Among them, TiO 2 is extensively utilized due to its non-toxic nature, low cost, stable chemical properties, superior corrosion resistance, high specific surface area, and commendable biocompatibility. [7][8][9] TiO 2 serves as a photocatalytic antibacterial material without causing any secondary pollution, thereby exhibiting environmental friendliness. [10] However, the spectral responsivity of TiO 2 is limited to ultraviolet light due to its wide band gap, which poses a significant constraint on its application.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of TiO₂ Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

Ren,

Sun,

Huang

et al. 2024

Part & Part Syst Charact

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TiO2 is a widely used photocatalytic antibacterial material and shows good antibacterial properties under ultraviolet light. However, its antibacterial efficacy under visible light still remains limited. To develop low‐cost and biocompatible antibacterial materials, this article provides a facile method for in situ preparation of a trace amount of silver (Ag) doped TiO2 nanorods (TiO2NR–Ag) composites, which cannot only enhance the antibacterial properties under visible light, but also has good biocompatibility. Two representative epidemic strains, Staphylococcus aureus and Escherichia coli, are selected for analysis of the antibacterial properties of the obtained TiO2NR–Ag composite nanoparticles. The results demonstrate that even if the Ag doping level is as low as 2.5 × 10−4 wt% (i.e., Ag/TiO2 = 2.50 µg g−1), the TiO2NR–Ag composite nanoparticle coatings are transparent and exhibit exceptional antibacterial properties, which is attributed to synergistic enhanced bactericidal effect of the active substances generated by TiO2NR–Ag under visible light. The cytotoxicity and hemolysis rate results indicate that TiO2NR–Ag composite exhibit excellent biocompatibility. This study effectively improves the antibacterial effect of TiO2 photocatalytic nanomaterials while maintaining their biocompatibility, and the prepared TiO2NR–Ag composite nanoparticles can be applied in various fields such as window glasses, medical device surfaces, furniture surfaces, and optical devices, etc.

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Section: Introductionmentioning

confidence: 99%

“…[ 4–6 ] Among them, TiO 2 is extensively utilized due to its non‐toxic nature, low cost, stable chemical properties, superior corrosion resistance, high specific surface area, and commendable biocompatibility. [ 7–9 ]…”

Section: Introductionmentioning

confidence: 99%

Preparation of TiO₂ Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

Ren,

Sun,

Huang

et al. 2024

Part & Part Syst Charact

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“…6 Due to these special effects, nanomaterials have optical, magnetic, electrical, and thermal properties that are different from those of ordinary materials. 7 These differences enable nanomaterials to have a wide range of applications in catalysts, 8,9 adsorbents, 10,11 antimicrobial agents, 12,13 functional ceramics, 14,15 and ame retardants. 16 The liquid phase combustion synthesis, also named solution combustion synthesis (SCS) which start to be implemented in 1981 with the Jain method.…”

Section: Introductionmentioning

confidence: 99%

A review on the synthesis of metal oxide nanomaterials by microwave induced solution combustion

Yin

et al. 2023

RSC Adv.

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“…Compared to other metal ions, silver-deposited TiO 2 has a broad spectrum of antibacterial activity and is safe due to its non-toxic nature [35]; and has also received special attention for its low cost of synthesis and high availability [36]. Therefore, the antibacterial activity applications of silver and TiO 2 generate great interest since they can be applied in the manufacturing of coated sanitary products, medical devices, surfaces for food preparation, air conditioning lters, among others.…”

Section: Introductionmentioning

confidence: 99%

Application of the response surface methodology for the evaluation of Staphylococcus aureus inhibition with Ag/TiO2 nanoparticles

et al. 2021

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The present work shows the implementation of the Response Surface Methodology (RSM), fed by an experimental Central Composite Design (CCD) to nd the conditions that allow maximizing the inhibition of the microorganism Staphylococcus aureus with nanoparticles of TiO 2 silanized with 3-Aminopropyltriethoxysilane (APTES) and doped with Ag. In addition, Poly(lactic) acid composites were prepared with these Ag/TiO 2 nanoparticles with the aim to confer their antimicrobial effect. The independent variables considered were pH, AgNO 3 /TiO 2 ratio (% w/w), and TiO 2 nanoparticles concentration (g/250 mL), and as the variable of response, the length of the diameter of the halo or zone of inhibition presented by the microorganism (mm). Statistical analysis found that maximization of S. aureus inhibition occurs at intermediate levels with a value of 10 for pH and 5 g of TiO 2 solids, while for the concentration of AgNO 3 high levels are required, greater than 10% w/w. Likewise, the statistical signi cance was determined using the Student's t-test and the p-value; it was found that the signi cant effect corresponds to the concentration of AgNO 3 , so a second experimental CCD design equirradial with two factors was considered, estimating AgNO 3 concentration and TiO 2 amount, the pH at constant 10 value. The second experimental design indicated that maximization in S. aureus inhibition occurs at an AgNO 3 concentration between 20-25% w/w with high amounts of TiO 2 solids (7-8 g), with a resulting zone of inhibition between 26-28 mm. The quadratic model obtained, which represents the relationship between the length of the zone of inhibition with the variables considered, shows an adjustment of experimental data with a coe cient of determination (R 2 ) of 0.82.

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Preparation, characterization and antibacterial properties of cobalt doped titania nanomaterials

Cited by 17 publications

References 32 publications

Preparation of TiO₂ Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

Preparation of TiO₂ Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

A review on the synthesis of metal oxide nanomaterials by microwave induced solution combustion

Application of the response surface methodology for the evaluation of Staphylococcus aureus inhibition with Ag/TiO2 nanoparticles

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Preparation, characterization and antibacterial properties of cobalt doped titania nanomaterials

Cited by 17 publications

References 32 publications

Preparation of TiO2 Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

Preparation of TiO2 Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

A review on the synthesis of metal oxide nanomaterials by microwave induced solution combustion

Application of the response surface methodology for the evaluation of Staphylococcus aureus inhibition with Ag/TiO2 nanoparticles

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Product

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Preparation of TiO₂ Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

Preparation of TiO₂ Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation