Antibacterial activity of TiO2 nanotubes: Influence of crystal phase, morphology and Ag deposition

Li, Huirong; Cui, Qiang; Feng, Bo; Wang, Jianxin; Li, Xiong; Weng, Jie

doi:10.1016/j.apsusc.2013.07.076

Cited by 106 publications

(88 citation statements)

References 30 publications

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“…This present study stimulates the development of synthetic approaches of other one dimensional nanocomposite materials with improved properties and multiple functionalities [142]. Ag/TiO 2 nanotubes with dimensions of 200 mm length and 50 nm diameter were fabricated by electrochemical anodization of Ti substrate on which Ag nanoparticles were deposited by a silver mirror reaction [143]. This Ag/TiO 2 nanotubes exhibited highest antibacterial activity for E. coli inactivation under UV light illumination.…”

Section: Photocatalytic Activity Of Silver Deposited Titania (Ag/tio 2 )mentioning

confidence: 73%

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Devi

Kavitha

2016

Applied Surface Science

308

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Section: Photocatalytic Activity Of Silver Deposited Titania (Ag/tio 2 )mentioning

confidence: 73%

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Devi

Kavitha

2016

Applied Surface Science

308

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“…Recently, Li. et al reported the bacteriotoxicity of TiO 2 nanotubes with different diameter sizes ranging from 20 to 200 nm against E. coli . It has been shown that the antibacterial activity of TDNs does not simply changes with their diameters; instead, the specific surface area of TDNs dictates their bactericidal capacity similar to their photocatalytic behavior.…”

Section: Discussionmentioning

confidence: 99%

Size tuning of Ag‐decorated TiO₂ nanotube arrays for improved bactericidal capacity of orthopedic implants

Esfandiari

Simchi

Bagheri

2013

J Biomedical Materials Res

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Surface modification of orthopedic implants using titanium dioxide nanotubes and silver nanoparticles (SNs) is a promising approach to prevent bacteria adhesion, biofilm formation, and implant infection. Herein, we utilized a straightforward and all-solution process to prepare silver-decorated TiO2 nanotube arrays with surface density of 10(3) to 10(4) per µm(2). With controlling the synthesis conditions, hexagonal closed-packed nanotubes with opening diameter of 30-100 nm that are decorated with SNs with varying sizes (12-40 nm) were prepared. Various analytical techniques were utilized to characterize the size, morphology, distribution, valance state, surface roughness, and composition of the prepared antibacterial films. The bactericidal capacity of the films were studied on Escherichia coli (E. coli) by drop-test method and correlated with the size and percentage of Ag as well as the surface density of TiO2 nanotube arrays. Synergetic effect of TiO2 nanotubes and SNs on the antibacterial activity of the composite films is shown. The bactericidal capacity is found to depend on the size characteristics of the Ag-TiO2 coating. The highest antibacterial activity is obtained for TiO2 nanotubes with opening diameter of about 100 nm and SNs with an average size of 20 nm. MTT assay using osteoblast MG63 cells was performed to examine the cell viability. We suggest that release rate of the silver ions is an important factor controlling the antibacterial activity. Additionally, the size dependency of the bactericidal capacity implies that electrical coupling between silver and TiO2 nanotubes and improved hydrophobicity of the coating might influence the bacterial behavior of the hybrid nanostructures.

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“…So the antibacterial activity against gram positive bacteria was shown by both the phases of MoO 3 . Along with this the size, shape, structure and composition of nanomaterials also plays a crucial role in the antibacterial activity [45]. The nano-biointerface is an important phenomenon for the understanding of antibacterial activity [23][24][25][26].…”

Section: Antibacterial Activity Studymentioning

confidence: 99%

Chemically Grown MoO3 Nanorods for Antibacterial Activity Study

Desai¹,

Mali²,

Kondalkar³

et al. 2015

J Nanomed Nanotechnol

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In the present investigation, sea urchin like morphology of h-MoO 3 nanorods are successfully synthesized by chemical bath deposition (CBD) technique. The thermal stability, structural details, morphology and compositional analysis of MoO 3 was done using thermogravimetry (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HR-TEM), selected area electron diffraction (SAED) and X-ray photoelectron spectroscopy (XPS) techniques respectively. The thermal analysis reveals presence of sharp exothermic peak at 409ºC indicating irreversible phase transition. X-ray diffraction pattern showed hexagonal to orthorhombic phase transition after annealing at 450ºC. As synthesized h-MoO 3 shows well oriented hexagonal rods with sea urchin like architecture while that of annealed MoO 3 sample revealed 2D layer by layer growth. The SAED pattern confirms single crystalline nature of as synthesized h-MoO 3 and polycrystalline nature of annealed α-MoO 3 . While XPS study of both confirms Mo +6 and O 2-oxidation states of elements. Furthermore, characteristic antibacterial properties of h-MoO 3 and α-MoO 3 against gram positive Bacillus megaterium, Streptococcus aureus and gram negative Escherichia coli is noted.

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Antibacterial activity of TiO2 nanotubes: Influence of crystal phase, morphology and Ag deposition

Cited by 106 publications

References 30 publications

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Size tuning of Ag‐decorated TiO₂ nanotube arrays for improved bactericidal capacity of orthopedic implants

Chemically Grown MoO3 Nanorods for Antibacterial Activity Study

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Antibacterial activity of TiO2 nanotubes: Influence of crystal phase, morphology and Ag deposition

Cited by 106 publications

References 30 publications

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

A review on plasmonic metal⿿TiO2 composite for generation, trapping, storing and dynamic vectorial transfer of photogenerated electrons across the Schottky junction in a photocatalytic system

Size tuning of Ag‐decorated TiO2 nanotube arrays for improved bactericidal capacity of orthopedic implants

Chemically Grown MoO3 Nanorods for Antibacterial Activity Study

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Size tuning of Ag‐decorated TiO₂ nanotube arrays for improved bactericidal capacity of orthopedic implants