Decoration of titanium dioxide nanotubes by silver nanoparticles using photochemical deposition method and its application as an electrocatalyst to determine tinidazole

2021 ◽  
Author(s):  
Fereshteh Koohi ◽  
Hamid R. Zare ◽  
Zahra Shekari
Keyword(s):  
Silver Nanoparticles ◽  
Titanium Dioxide ◽  
Sheet Metal ◽  
Deposition Method ◽  
Titanium Sheet ◽  
Titanium Dioxide Nanotubes ◽  
Photochemical Deposition

In this study, titanium nanotubes electrodes were decorated with silver nanoparticles (AgNPs/TiO2NTs) and used as an electrocatalyst for reduction of tinidazole. AgNPs/TiO2NTs are constructed by anodization of titanium sheet metal...

scholarly journals Fabrication of Electrochemical Biosensor Based on Titanium Dioxide Nanotubes and Silver Nanoparticles for Heat Shock Protein 70 Detection

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3767
Author(s):  
Marta Nycz ◽  
Katarzyna Arkusz ◽  
Dorota G. Pijanowska
Keyword(s):  
Silver Nanoparticles ◽  
Titanium Dioxide ◽  
Heat Shock ◽  
Heat Shock Protein ◽  
Heat Shock Protein 70 ◽  
Electrochemical Biosensor ◽  
Electrochemical Characteristics ◽  
Detection Range ◽  
Titanium Dioxide Nanotubes ◽  
X Ray

This paper presents the fabrication methodology of an electrochemical biosensor for the detection of heat shock protein 70 (HSP70) as a potential tumor marker with high diagnostic sensitivity. The sensor substrate was a composite based on titanium dioxide nanotubes (TNTs) and silver nanoparticles (AgNPs) produced directly on TNTs by electrodeposition, to which anti-HSP70 antibodies were attached by covalent functionalization. This manuscript contains a detailed description of the production, modification, and the complete characteristics of the material used as a biosensor platform. As-formed TNTs, annealed TNTs, and the final sensor platform—AgNPs/TNTs, were tested using scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction analysis (XRD). In addition, open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV) of these substrates were used to assess the influence of TNTs modification on their electrochemical characteristics. The EIS technique was used to monitor the functionalization steps of the AgNPs/TNTs electrode and the interaction between anti-HSP70 and HSP70. The produced composite was characterized by high purity, and electrical conductivity improved more than twice compared to unmodified TNTs. The linear detection range of HSP70 of the developed biosensor was in the concentration range from 0.1 to 100 ng/mL.

scholarly journals pH-sensitive release of silver nanoparticles from titanium dioxide nanotubes array

2016 ◽  
Vol 4 ◽  
Author(s):  
Liu Jinsong ◽  
Xu Lihua ◽  
Liu Chuantong ◽  
Jin Yifan ◽  
Hu Xiaohui ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Titanium Dioxide ◽  
Ph Sensitive ◽  
Titanium Dioxide Nanotubes

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

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

Titanium dioxide nanotubes: synthesis, structure, properties and applications

2021 ◽  
Vol 90 ◽  
Author(s):  
Andrey Andreevich Rempel ◽  
Al′bina Akhmetovna Valeeva ◽  
Alexander Sergeevich Vokhmintsev ◽  
Ilya Alexandrovich Weinstein
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanotubes ◽  
Structure Properties
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