Effect of surface characteristics on the antibacterial properties of titanium dioxide nanotubes produced in aqueous electrolytes with carboxymethyl cellulose

2020 ◽  
Vol 109 (1) ◽  
pp. 104-121
Author(s):  
Robinson Aguirre Ocampo ◽  
Mónica Echeverry‐Rendón ◽  
Idania DeAlba‐Montero ◽  
Sara Robledo ◽  
Facundo Ruiz ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Carboxymethyl Cellulose ◽  
Antibacterial Properties ◽  
Surface Characteristics ◽  
Aqueous Electrolytes ◽  
Titanium Dioxide Nanotubes ◽  
Effect Of Surface

scholarly journals Hydroxyapatite Nanocrystal Deposited Titanium Dioxide Nanotubes Loaded with Antibiotics for Combining Biocompatibility and Antibacterial Properties

MRS Advances ◽  
2018 ◽  
Vol 3 (30) ◽  
pp. 1703-1709
Author(s):  
Xuefei Zhang ◽  
Yuan Zhang ◽  
Matthew Z. Yates
Keyword(s):  
Titanium Dioxide ◽  
Simulated Body Fluid ◽  
Body Fluid ◽  
Antibacterial Property ◽  
Composite Coatings ◽  
Antibacterial Properties ◽  
Release Profile ◽  
Titanium Dioxide Nanotubes ◽  
Model Drug ◽  
Drug Compound

ABSTRACTHydroxyapatite (HA)/nanotubular titanium dioxide (TiO2) composite coatings loaded with antibiotics were developed to combine biocompatibility and antibacterial property. TiO2 nanotubes were first fabricated on Ti plates using anodization techniques. Then HA nanocrystals were synthesized on the TiO2 nanotubes by electrochemical deposition, followed by loading of a model drug compound, streptomycin. The streptomycin release profile of the composite coating was investigated. Bacterial tests demonstrate that the streptomycin-loaded composite coatings were highly effective in inhibiting bacterial growth. Simulated body fluid (SBF) experiments indicated that the composite coatings possessed good osseointegration capability.

scholarly journals Influence of the Silver Nanoparticles (AgNPs) Formation Conditions onto Titanium Dioxide (TiO2) Nanotubes Based Electrodes on Their Impedimetric Response

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1072 ◽  
Author(s):  
Nycz ◽  
Arkusz ◽  
Pijanowska
Keyword(s):  
Silver Nanoparticles ◽  
Titanium Dioxide ◽  
Electrochemical Sensors ◽  
Electrochemical Impedance ◽  
Antibacterial Properties ◽  
Effective Area ◽  
Open Circuit ◽  
Titanium Dioxide Nanotubes ◽  
Area Increase ◽  
Formation Conditions

This paper presents the comparison of the effects of three methods of production of silver spherical and near-spherical nanoparticles (AgNPs) on the titanium dioxide nanotubes (TNT) base: cyclic voltammetry, chronoamperometry, and sputter deposition. It also evaluates the influence of silver nanoparticles on the electrochemical properties of the developed electrodes. The novelty of this research was to fabricate regular AgNPs free of agglomerates uniformly distributed onto the TNT layer, which has not been accomplished with previous attempts. The applied methods do not require stabilizing and reducing reagents. The extensive electrochemical characteristic of AgNP/TNT was performed by open circuit potential and electrochemical impedance spectroscopy methods. For AgNPs/TNT obtained by each method, the impedance module of these electrodes was up to 50% lower when compared to TNT, which means that AgNPs enabled more efficient electron transfer due to the effective area increase. In addition, the presence of nanoparticles increases the corrosion resistance of the prepared electrodes. These substrates can be used as electrochemical sensors due to their high electrical conductivity, and also as implants due to the antibacterial properties of both the TNT and AgNPs.

scholarly journals Antibacterial properties of silver nanoparticles grown in situ and anchored to titanium dioxide nanotubes on titanium implant against Staphylococcus aureus

2019 ◽  
Vol 14 (1) ◽  
pp. 97-110 ◽  
Author(s):  
Urvashi F. Gunputh ◽  
Huirong Le ◽  
Kiruthika Lawton ◽  
Alexandros Besinis ◽  
Christopher Tredwin ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Silver Nanoparticles ◽  
Titanium Dioxide ◽  
Antibacterial Properties ◽  
Titanium Implant ◽  
Titanium Dioxide Nanotubes

Bicomponent multifilament yarns of recycled poly(ethylene terephthalate) and nano-titanium dioxide for antibacterial carpet

2021 ◽  
pp. 152808372110117
Author(s):  
Sommai Pivsa-Art ◽  
Komson Sunyikhan ◽  
Weraporn Pivsa-Art
Keyword(s):  
Antibacterial Activity ◽  
Titanium Dioxide ◽  
Ethylene Terephthalate ◽  
Antibacterial Properties ◽  
Nano Structure ◽  
Elongation At Break ◽  
High Antibacterial Activity ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Multifilament Yarns

Recycled poly(ethylene terephthalate) (RPET) multifilament yarns are used in carpet manufacturing as a way to reduce plastic waste. The conventional RPET carpet is however susceptible to bacterial accumulation. As a result, this research experimentally doped RPET with nano-structure titanium dioxide (nano-TiO2) to produce RPET/nano-TiO2 bicomponent multifilament yarns with antibacterial property. The experimental multifilament yarn structure consisted of two parts: neat RPET core and RPET/nano-TiO2 shell. The nano-TiO2 content in the shell was varied between 1 and 3 wt% and the core/shell (C/S) ratios between 90/10, 70/30, and 50/50 w/w. The effects of C/S ratio and nano-TiO2 content on the mechanical and antibacterial properties of bicomponent multifilament yarns were determined. The experimental results indicated that the C/S ratio had no effect on the tenacity and elongation at break. Meanwhile, the tenacity and elongation at break of bicomponent fibers increased with nano-TiO2 content in the shell. The TiO2-doped RPET bicomponent yarns effectively inhibited the growth of Escherichia coli and Staphylococcus aureus. The 90/10 bicomponent multifilament fiber with 3 wt% TiO2 achieved the highest antibacterial activity. The very high antibacterial activity was attributable to greater deposition of nano-TiO2 particles near and on the shell surface.

Titanium dioxide nanotubes conjugated with quercetin function as an effective anticancer agent by inducing apoptosis in melanoma cells

2021 ◽  
Author(s):  
Surendra Gulla ◽  
Dakshayani Lomada ◽  
Prasanna Babu Araveti ◽  
Anand Srivastava ◽  
Mamatha Kumari Murikinati ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Anticancer Agent ◽  
Melanoma Cells ◽  
Titanium Dioxide Nanotubes

scholarly journals Water Filtration Membranes Based on Non-Woven Cellulose Fabrics: Effect of Nanopolysaccharide Coatings on Selective Particle Rejection, Antifouling, and Antibacterial Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1752
Author(s):  
Blanca Jalvo ◽  
Andrea Aguilar-Sanchez ◽  
Maria-Ximena Ruiz-Caldas ◽  
Aji P. Mathew
Keyword(s):  
Cellulose Nanofibers ◽  
Antibacterial Properties ◽  
Surface Characteristics ◽  
Water Filtration ◽  
Separation Performance ◽  
Nonwoven Fabrics ◽  
Filtration Membranes ◽  
Wide Range ◽  
Dry Conditions ◽  
Cellulose Fabrics

This article presents a comparative study of the surface characteristics and water purification performance of commercially available cellulose nonwoven fabrics modified, via cast coating, with different nano-dimensioned bio-based carbohydrate polymers, viz. cellulose nanocrystals (CNC), TEMPO-oxidized cellulose nanofibers (T-CNF), and chitin nanocrystals (ChNC). The surface-modified nonwoven fabrics showed an improvement in wettability, surface charge modification, and a slight decrease of maximum pore size. The modification improved the water permeance in most of the cases, enhanced the particle separation performance in a wide range of sizes, upgraded the mechanical properties in dry conditions, and showed abiotic antifouling capability against proteins. In addition, T-CNF and ChNC coatings proved to be harmful to the bacteria colonizing on the membranes. This simple surface impregnation approach based on green nanotechnology resulted in highly efficient and fully bio-based high-flux water filtration membranes based on commercially available nonwoven fabrics, with distinct performance for particle rejection, antifouling and antibacterial properties.

scholarly journals Xanthate-modified nanoTiO2 as a novel vulcanization accelerator enhancing mechanical and antibacterial properties of natural rubber

2021 ◽  
Vol 10 (1) ◽  
pp. 478-487
Author(s):  
Yu Liu ◽  
Heliang Wang ◽  
Xiwei Guo ◽  
Mingyuan Yi ◽  
Lihong Wan ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Natural Rubber ◽  
High Performance ◽  
Antibacterial Properties ◽  
Ceric Ammonium Nitrate ◽  
Rubber Matrix ◽  
Aging Effects ◽  
Antibacterial Performance ◽  
First Time ◽  
Vulcanization Accelerator

Abstract With the emerging of sustainability, the fabrication of effective and eco-friendly agents for rubber industry has attracted extensive attention. In this study, a novel and nontoxic titanium dioxide-based vulcanization accelerator (xanthate-modified nanotitanium dioxide (TDSX)) with excellent antibacterial performance, for the first time, was synthesized under the catalyst of ceric ammonium nitrate. Notably, the thermal stability of xanthate was greatly enhanced after being grafted on titanium dioxide (TiO2) nanoparticles, in which the activation energy was increased from 6.4 to 92.5 kJ/mol, enabling the obtained TDSX with multiple functions, mainly consisting of fabulous vulcanization-promoting effects, reinforcing effects, antibacterial properties, and anti-ultraviolet aging effects for natural rubber (NR). Simultaneously, the TDSX can be effectively and uniformly dispersed in the rubber matrix along with the developed interface interaction between TDSX particles and rubber matrix. Compared to the traditional accelerators 2-mercaptobenzothiazole (M) system, the tensile strength and the tearing strength of NR/TDSX was improved by 26.3 and 40.4%, respectively. Potentially, our work for preparing green vulcanization accelerator can provide a new design strategy for multifunctional high performance elastomer materials.

Sign in / Sign up

Export Citation Format

Share Document