scholarly journals Recent Advances in TiO2 Films Prepared by Sol-gel Methods for Photocatalytic Degradation of Organic Pollutants and Antibacterial Activities

Coatings ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 613 ◽  
Author(s):  
Pant ◽  
Park ◽  
Park
Keyword(s):  
Dye Degradation ◽  
Sol Gel ◽  
Antibacterial Activities ◽  
Future Perspective ◽  
Synthesis Methods ◽  
Synthetic Dyes ◽  
Tio2 Films ◽  
Gel Method ◽  
Sol Gel Method ◽  
Recent Advances

Photocatalysis has recently emerged as an advanced, green, and eco-friendly process for the treatment of wastewater and air, and antimicrobial disinfection applications. In this context, TiO2 nanostructures have been shown to be the prominent photocatalyst candidates due to their low cost, non-toxicity, and ease of fabrication. This review highlights the investigation and development of TiO2 photocatalyst film by sol-gel method with special emphasis on the photodecolorization of synthetic dyes and antibacterial activities. Furthermore, various synthesis methods for the preparation of TiO2 films and their advantages, as well as limitations, are summarized. Finally, recent advances in TiO2 films by sol-gel method for dye degradation and antibacterial activities, challenges, and future perspective are discussed.

Fabrication of F–Nb co-doped transparent conducting TiO2 films using the sol-gel method

2021 ◽  
Vol 126 ◽  
pp. 105675
Author(s):  
Yang Ren ◽  
Haiyan He ◽  
Yunwei Wang ◽  
Ying Gong ◽  
Gaoyang Zhao
Keyword(s):  
Sol Gel ◽  
Tio2 Films ◽  
Gel Method ◽  
Sol Gel Method ◽  
Transparent Conducting ◽  
Co Doped

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 Preparation and Photocatalytic Performance of ZnO/Sepiolite Composite Materials

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Chao Li ◽  
Huijuan Li ◽  
Guicheng He ◽  
Zhiwu Lei ◽  
Wenyuan Wu
Keyword(s):  
Composite Materials ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Environmental Pollutants ◽  
Chemical Properties ◽  
Treatment Method ◽  
Blue Dye ◽  
Synthesis Methods ◽  
Gel Method ◽  
Sol Gel Method

Photocatalytic technology is a widely used water treatment method, whose efficiency can be increased by developing a suitable photocatalyst fabrication procedure. In this study, five different synthesis methods were utilised for the preparation of novel ZnO/sepiolite photolytic composites, namely, sol-gel method, hydrothermal reduction, hydrolytic precipitation, powder sintering, and impregnation-reduction. The obtained photocatalysts were characterised by scanning electron microscopy, infrared spectroscopy, and X-ray diffraction. The differences between the applied photocatalyst preparation methods and the reasons for these differences were discussed, and the photocatalytic activities of the prepared composite materials were compared. The obtained results revealed that the physical structure, chemical properties, and photocatalytic performance of the composite produced by the sol-gel method were superior to those of the materials fabricated by the other four methods. Moreover, this material also exhibited high photocatalytic stability, while its photocatalytic degradation of methylene blue dye proceeded via a quasi-first-order reaction. The prepared composites have broad application prospects in photocatalysis and can be potentially used for treating environmental pollutants.

scholarly journals Degradation of Remazol Black dye from Aqueous Solution by Heterogeneous NH3(MoO3)3/H2O2 System

2021 ◽  
pp. 67-78
Author(s):  
Kouakou Yao Urbain ◽  
Kambiré Ollo ◽  
Gnonsoro Urbain Paul ◽  
Eroi N’goran Sévérin ◽  
Trokourey Albert
Keyword(s):  
Hydrogen Peroxide ◽  
Molybdenum Oxide ◽  
Degradation Rate ◽  
Dye Degradation ◽  
Degradation Kinetics ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Molybdenum Nanoparticles ◽  
Remazol Black

Aims: The pollution of the environment by organic dyes in water is a matter of great concern. Wastewater containing dyes is difficult to treat by conventional wastewater treatment methods such as coagulation, ozonation, biological treatment, etc. This is why the implementation of an effective method by not generating pollutants secondary is necessary. The objective of this work is to study the degradation of remazol black, an azo dye, by the coupling of hydrogen peroxide - molybdenum oxide nanoparticle. The nanoparticles were synthesized by the aqueous sol-gel method using a reflux assembly. Study Design: Random design. Methodology: The nanoparticles were synthesized by the aqueous sol-gel method using a reflux assembly and then characterized by X-ray diffraction and using software origin to determine the particles size by Scherrer's formula. The influence of hydrogen peroxide, molybdenum oxide and hydrogen peroxide / molybdenum oxide coupling, and the degradation kinetics of remazol black were studied. We also studied the influence of the pH of the solution, the mass of molybdenum nanoparticles and the concentration of remazol black on the dye degradation process. Results: The results showed that the synthesized oxide is ammonium molybdenum trioxide NH3(MoO3)3) with a hexagonal structure and size 22.79 nm. The study of the catalytic effect revealed a degradation rate of 17%, 0.83% and 42% respectively for H2O2, NH3(MoO3)3 and the coupling NH3(MoO3)3/H2O2. The study also showed that the degradation of remazol black by the couple NH3(MoO3)3 /H2O2 is better at pH = 4 and for a mass of nanoparticles of 400 mg. This degradation kinetics are pseudo 1st order. In addition, the degradation rate decreases when the concentration of remazol black increases. The efficiency of the coupling (NH3(MoO3)3 / H2O2 showed at ambient temperature, that it was possible to remove about 60% of the initial color of remazol black from the water in a batch reaction. Conclusion: The reflux method makes it possible to synthesize molybdenum nanoparticles. The molybdenum oxide hetero-Fenton process is effective in removing remazol black dye from water.

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.

Effect of polymeric precursors on the properties of TiO2 films prepared by sol-gel method

2020 ◽  
Vol 240 ◽  
pp. 122219 ◽  
Author(s):  
Orawan Wiranwetchayan ◽  
Surin Promnopat ◽  
Titipun Thongtem ◽  
Arnon Chaipanich ◽  
Somchai Thongtem
Keyword(s):  
Sol Gel ◽  
Tio2 Films ◽  
Polymeric Precursors ◽  
Gel Method ◽  
Sol Gel Method

Waveguiding properties of CdS-doped SiO2–TiO2 films prepared by sol–gel method

1998 ◽  
Vol 322 (1-2) ◽  
pp. 238-244 ◽  
Author(s):  
S Juodkazis ◽  
E Bernstein ◽  
J.C Plenet ◽  
C Bovier ◽  
J Dumas ◽  
...  
Keyword(s):  
Sol Gel ◽  
Tio2 Films ◽  
Gel Method ◽  
Sol Gel Method

The influence of “small molecules” on properties of TiO2 films prepared by sol–gel method

2014 ◽  
Vol 401 ◽  
pp. 164-168 ◽  
Author(s):  
J. Pagáčová ◽  
A. Plško ◽  
K. Michalková ◽  
J. Šulcová ◽  
B. Bieliková ◽  
...  
Keyword(s):  
Small Molecules ◽  
Sol Gel ◽  
Tio2 Films ◽  
Gel Method ◽  
Sol Gel Method
Sign in / Sign up

Export Citation Format

Share Document