scholarly journals WO3-Doped TiO2Coating on Charcoal Activated with Increase Photocatalytic and Antibacterial Properties Synthesized by Microwave-Assisted Sol-Gel Method

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Weerachai Sangchay
Keyword(s):  
Methylene Blue ◽  
Antibacterial Activity ◽  
Water Purification ◽  
Sol Gel ◽  
Antibacterial Properties ◽  
Antibacterial Activities ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli ◽  
Microwave Assisted

WO3-doped TiO2coating on charcoal activated (CA) was prepared by microwave-assisted sol-gel method. The samples calcined at the temperature of 500°C for 2 h with a heating rate of 10°C/min were characterized by XRD, EDS, and SEM. The photocatalytic and antibacterial activities of WO3-doped TiO2coating on CA were investigated by means of degradation of a methylene blue (MB) solution and against the bacteriaE. coli, respectively. The effects of WO3concentration were discussed. The 1% WO3-doped TiO2coated CA seems to exhibit the higher photocatalytic and antibacterial activity than other samples. The WO3-doped TiO2coated on CA are expected to be applied as a photocatalyst for water purification.

scholarly journals Synthesis of Bi0.5Li0.5TiO3 Nanoparticles by Sol-Gel Method for Photocatalytic Methylene Blue Degradation and Antibacterial Activity

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Thanh T. Hai Le ◽  
Bao Quoc Phung ◽  
Dung Duc Dang
Keyword(s):  
Methylene Blue ◽  
Antibacterial Activity ◽  
Sol Gel ◽  
Advanced Characterization ◽  
Kinetic Rate Constant ◽  
Kinetic Rate ◽  
Methylene Blue Degradation ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli

Facile synthesis of nanomaterials for advanced characterization and application is gaining interest from many researchers. In this study, Bi0.5Li0.5TiO3 nanoparticles were synthesized through the sol-gel method. The photocatalytic activity of the synthesized Bi0.5Li0.5TiO3 was investigated for degradation of methylene blue (MB) under UV irradiation. A photocatalytic efficiency of 74% was found at 150 min when the degradation was performed in the basic media, and the kinetic rate constant was calculated equal to 0.0093 min-1. The antibacterial activity of Bi0.5Li0.5TiO3 nanoparticles was evaluated against E. coli, and the results showed considerable efficiency.

Preparation and in vitro osteogenic, angiogenic and antibacterial properties of cuprorivaite (CaCuSi4O10, Cup) bioceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (51) ◽  
pp. 45840-45849 ◽  
Author(s):  
Tian Tian ◽  
Chengtie Wu ◽  
Jiang Chang
Keyword(s):  
Wound Healing ◽  
Sol Gel ◽  
Antibacterial Properties ◽  
Antibacterial Activities ◽  
Gel Method ◽  
Sol Gel Method

Cuprorivaite firstly synthesized by sol–gel method with angiogenic and antibacterial activities for wound healing application.

scholarly journals Antibacterial Properties of Zn Doped Hydrophobic SiO2 Coatings Produced by Sol-Gel Method

Coatings ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 362
Author(s):  
Bożena Pietrzyk ◽  
Katarzyna Porębska ◽  
Witold Jakubowski ◽  
Sebastian Miszczak
Keyword(s):  
Sol Gel ◽  
Antibacterial Properties ◽  
Zinc Nitrate ◽  
Surface Wettability ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli ◽  
Source Of Infection ◽  
Bacteria Adhesion ◽  
Hydrophobic Sio2

Bacteria existing on the surfaces of various materials can be both a source of infection and an obstacle to the proper functioning of structures. Increased resistance to colonization by microorganisms can be obtained by applying antibacterial coatings. This paper describes the influence of surface wettability and amount of antibacterial additive (Zn) on bacteria settlement on modified SiO2-based coatings. The coatings were made by sol-gel method. The sols were prepared on the basis of tetraethoxysilane (TEOS), modified with methyltrimethoxysilane (MTMS), hexamethyldisilazane (HMDS) and the addition of zinc nitrate or zinc acetate. Roughness and surface wettability tests, as well as study of the chemical structure of the coatings were carried out. The antibacterial properties of the coatings were checked by examining their susceptibility to colonization by Escherichia coli. It was found that the addition of zinc compound reduced the susceptibility to colonization by E. coli, while in the studied range, roughness and hydrophobicity did not affect the level of bacteria adhesion to the coatings.

Synthesis Photocatalytic TiO2/ZnO Nanocomposite and Investigation through Anatase, Wurtzite and ZnTiO3 Phases Antibacterial Behaviors

2018 ◽  
Vol 51 ◽  
pp. 69-77 ◽  
Author(s):  
Hanif Mohammadi ◽  
Mohammad Ghorbani
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Antibacterial Activity ◽  
Uv Light ◽  
Sol Gel ◽  
Molar Ratio ◽  
Plate Count ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli

Titanium dioxide is prepared by sol gel method from titanium tetraisopropoxide (TTIP) as precursor and likewise zinc oxide is prepared by sol gel method from zinc acetate dehydrate (ZAD) as precursor. The composite sols are prepared in three different molar ratios 90TiO2:10ZnO, 70TiO2:30ZnO and 50TiO2:50ZnO. Thin film deposition is carried out by dip coating technique. Crystal structure, surface morphology and photocatalytic activity of the prepared nanocomposite thin films are investigated. The antibacterial activity of the prepared nanocomposite thin film against E-coli ATCC 25922 bacteria is examined by placing the thin film in standard aqueous E-coli medium under UV light for 1, 2, 3 and 4 hours and then counting the bacteria with Standard Plate Count Agar (SPC) technique. The prepared thin films have shown strong antibacterial activity in the presence of UV light and by increasing the ZnO molar ratio from 10 to 50, antibacterial activity of the thin films decreases because of decreases in the anatase phase of the TiO2. In the dark conditions by increasing the molar ratio of ZnO, the antibacterial activity of the thin films increases and this phenomenon is related to increasing the zinc ions in the thin films.

scholarly journals Preparation of Nano Titanium Dioxide Using the Sol-Gel Method to Use in Friendly Environment Coatings

2021 ◽  
Vol 8 (2) ◽  
pp. 21-27
Author(s):  
Abeer Abd Saleh ◽  
Quraish Abbas ◽  
Seenaa Ibraheim ◽  
Ibrahim Muhammed ◽  
Mayes Sameer Hameed ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Titanium Dioxide ◽  
Tio2 Nanoparticles ◽  
Titanium Dioxide Nanoparticles ◽  
Sol Gel ◽  
Hardness Test ◽  
Weather Conditions ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli

In this research, preparation of titanium dioxide nanomaterial (TiO2) using sol-gel method was achieved. 2.5 g weight of the titanium dioxide nanoparticles were added to the local paint using the casting method. Thin films were prepared by drop casting the paint onto the surface of pre-prepared samples, then several tests were carried out including adhesion test, hardness test (Shore B), brightness and whiteness, friction test, contact angle, and antibacterial activity. The nanomaterial at a percentage of 12% showed the best results when it was added to the paint. These results include adhesion strength, hardness strength, and exposing to weather conditions of temperature, and humidity. The adhesive strength increased when adding the nanomaterial from 112 to 139 before exposure to the weather and from 58 to 108 after exposure. The hardness also increased from 77.9 to 86.5 before exposure to the surrounding environment and from 94.2 to 96.8 after exposure. In addition, the paint with TiO2 nanoparticles exhibited antibacterial activity against two types of bacteria Escherichia coli (E. coli), staphylococcus aurous (S. aurous) and antifungal candida. Paint with TiO2 nanoparticles is more efficient as antibacterial agents with E. coli as compared with S. aurous and candida.

Antiviral and Antibacterial Effects of Silver-Doped TiO2 Prepared by the Peroxo Sol-Gel Method

2019 ◽  
Vol 19 (11) ◽  
pp. 7356-7362 ◽  
Author(s):  
Benjawan Moongraksathum ◽  
Min-Yuan Chien ◽  
Yu-Wen Chen
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Influenza A ◽  
Sol Gel ◽  
Weight Ratio ◽  
Antibacterial Activities ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method

A series of multifunctional silver-doped titanium dioxide (Ag/TiO2) nanocomposites with various silver contents were synthesized by the peroxo sol–gel method using TiCl4 as a precursor and H2O2 as a peptizing agent. The sol was used to coat a glass substrate, thereby forming a thin film. The antiviral and antibacterial activities of the Ag/TiO2 films and their use in the photocatalytic degradation of an aqueous solution of methylene blue were investigated. The as-prepared materials were characterized using high-resolution transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The antiviral and antibacterial activities of the samples were tested against Escherichia coli, the influenza A virus (H1N1), and enterovirus. It was observed that an optimum Ag:TiO2 weight ratio of 1:100 enabled the highest activity in the photocatalytic degradation of an aqueous solution of methylene blue under irradiation with either ultraviolet or visible light. Moreover, the same composition remarkably exhibited extremely high antibacterial and virucidal effectivenesses greater than 99.99% against E. coli and infectious viruses after illumination with ultraviolet A. The presence of silver on TiO2 significantly enhanced its photocatalytic activity. Thus, the excellent photocatalytic activities and reusability of the Ag/TiO2 nanocomposite render it applicable as a coating material for several purposes.

Synthesis of TiO2–Ag nanocomposite with sol–gel method and investigation of its antibacterial activity against E. coli

2009 ◽  
Vol 196 (3) ◽  
pp. 241-245 ◽  
Author(s):  
Shahab Ansari Amin ◽  
Mohammad Pazouki ◽  
Azarmidokht Hosseinnia
Keyword(s):  
Antibacterial Activity ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
E Coli

scholarly journals Study Structural properties of Nanocomposite (polyvinyl Alcohol\ (CdO/NiO) via Sol-Gel Method

2021 ◽  
Author(s):  
Amatalkareem Mohammed Al-Jezbi
Keyword(s):  
Polyvinyl Alcohol ◽  
Structural Properties ◽  
Sol Gel ◽  
Cadmium Oxide ◽  
Antibacterial Activities ◽  
Oxide Mixture ◽  
Gel Method ◽  
Sol Gel Method ◽  
Diffraction Patterns ◽  
Cracking Process

Abstract This study deals with the synthesis of some physical properties of (CdO/NiO) nanocomposite via Sol-Gel method and their antibacterial activities. The NiO and CdO nanoxides as well as the CdO/NiO oxide mixture were prepared in five samples with different concentrations where the ratio of CdO/NiO was [(1: 0), (3: 1), (1: 1), (1: 3), (0: 1)], by using the gel solution by means of a polyvinyl alcohol solution ( PVA ). The samples were platelimb at (500̊C) for three hours. The structural properties of the prepared oxides resulting from the cracking process were studied. The XRD results showed the presence of pure cadmium oxide diffraction patterns in the sample (S 1 ) as well as pure nickel oxide in the sample (S 5 ), and confirmed the presence of the CdO / NiO oxide mixture in the samples (S 2 , S 3 , S 4 ). The results of XRD also showed, through calculations, that the specific surface area increased with increasing granular size and decreased with decreasing granular size. XRD calculations also showed that the intensity of eruptions decreased as the granular volume increased and, inversely, increased with decreasing granular size.

scholarly journals Visible-enhanced photocatalytic performance of CuWO4/WO3 hetero-structures: incorporation of plasmonic Ag nanostructures

2018 ◽  
Vol 42 (13) ◽  
pp. 11109-11116 ◽  
Author(s):  
R. Salimi ◽  
A. A. Sabbagh Alvani ◽  
N. Naseri ◽  
S. F. Du ◽  
D. Poelman
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Light Irradiation ◽  
Photo Degradation ◽  
Gel Method ◽  
Sol Gel Method

A new plasmonic Ag hybridized CuWO4/WO3 heterostructured nanocomposite was successfully synthesized via a ligand-assisted sol gel method and the photocatalytic activity was evaluated by photo-degradation of methylene blue (MB) under visible light irradiation.

Sign in / Sign up

Export Citation Format

Share Document