Microstructure And Photo-Catalytic Dye Degradation Of Silver- Silica Nano Composites Synthesised By Sol-Gel Method

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.

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Investigation of TiO2 Nanoparticles Synthesized by Sol-Gel Method for Effectual Photodegradation, Oxidation and Reduction Reaction

Crystals ◽

10.3390/cryst11121456 ◽

2021 ◽

Vol 11 (12) ◽

pp. 1456

Author(s):

Mohamad M. Ahmad ◽

Shehla Mushtaq ◽

Hassan S. Al Qahtani ◽

A. Sedky ◽

Mir Waqas Alam

Keyword(s):

Titanium Dioxide ◽

Tio2 Nanoparticles ◽

Dye Degradation ◽

Sol Gel ◽

Blue Dye ◽

Infrared Analysis ◽

Gel Method ◽

X Ray ◽

Sol Gel Method ◽

Titanium Dioxide Nanoparticle

Metal oxide titanium dioxide (TiO2) nanoparticles were synthesized by using a simple and economical sol-gel method. The prepared nanoparticles were used to evaluate methylene blue dye degradation and as catalysts in the oxidation of benzaldehyde. The crystallite size of the titanium dioxide nanoparticle was 18.3 nm, which was confirmed by X-ray diffraction analysis. The spherical morphology was confirmed by scanning electron microscopy (SEM), and the elemental composition of the nanoparticle was found by energy dispersive X-ray (EDAX) analysis. The anatase form of the nanoparticle was confirmed by the bandgap 3.2 eV, which was measured using UV–DRS analysis. The bond between metal and oxygen was confirmed by the peaks at 485 and 606 cm–1 analyzed by Fourier transform infrared analysis (FTIR). The efficiency of the catalyst in dye degradation was 60.08, 68.38, and 80.89% with respect to 50, 75, and 100 mg catalyst weight. The yield % of benzoic acid was 94%, and the reduction efficiency against 4-nitrophenol was 98.44%.

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Synthesis of Metal Doped TiO2 Nano-Composites by Sol-Gel Method and Their Structural Properties

Journal of Nanoscience and Technology ◽

10.30799/jnst.311.20060305 ◽

2020 ◽

Vol 6 (3) ◽

pp. 915-917

Author(s):

Rajani Altaf ◽

Sharma Jyoti ◽

Dave Pranav

Keyword(s):

Metal Oxide ◽

Sol Gel ◽

Nano Composites ◽

Gel Method ◽

Doped Tio2 ◽

Sol Gel Method ◽

Ir Studies ◽

Good Crystallinity ◽

Ft Ir ◽

Metal Doped

Metal oxide nano-composites plays a very important role in many areas of chemistry, physics and material science. This paper explains the synthesis and comparison of zinc and zirconium doped TiO2 metal oxide nano-composites and their different properties. Here the sol-gel method is used to synthesis both the nano-composites. Nano-composites have been characterized with XRD, AFM, Zetasizer & potential and FT-IR studies. XRD study revealed good crystallinity with the size range of 30 nm – 45 nm for both nano-composites. AFM studies also revealed the same. FTIR study reports the characteristics peaks of synthesised nano-composites.

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

Coatings ◽

10.3390/coatings9100613 ◽

2019 ◽

Vol 9 (10) ◽

pp. 613 ◽

Cited By ~ 18

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.

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Development of Neodymium Oxide (Nd2O3) Doped Nanocomposities Using Sol-Gel Method

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.159.605 ◽

2010 ◽

Vol 159 ◽

pp. 605-608

Author(s):

Manisha Devi ◽

Mukesh Kumar ◽

A.M. Gaur

Keyword(s):

Thermal Treatment ◽

Growth Parameters ◽

Sol Gel ◽

Neodymium Oxide ◽

Optical Microscope ◽

The Other ◽

Nano Composites ◽

Metal Composites ◽

Gel Method ◽

Sol Gel Method

In this paper, our aim was to develop the Neodymium oxide (Nd2O3) based nano composites using sol gel method. This work is mainly focused on to study the synthesis of metal composites by sol gel method. We will also observe the morphologies and dimension of neodymium oxide doped nano composites are influenced due to alteration in growth parameters such as different composition or thermal treatment. The structure of the sample prepared was studied using optical microscope. The other objective would be to investigate the synthesis of modem oxide doped nano composites.

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Three way electron transfer of a C–N–S tri doped two-phase junction of TiO2nanoparticles for efficient visible light photocatalytic dye degradation

RSC Advances ◽

10.1039/c5ra25017j ◽

2016 ◽

Vol 6 (10) ◽

pp. 7854-7863 ◽

Cited By ~ 30

Author(s):

S. Amreetha ◽

S. Dhanuskodi ◽

A. Nithya ◽

K. Jothivenkatachalam

Keyword(s):

Electron Transfer ◽

Visible Light ◽

Dye Degradation ◽

Sol Gel ◽

Two Phase ◽

Gel Method ◽

Sol Gel Method ◽

Photocatalytic Dye Degradation ◽

Visible Light Photocatalytic

C–N–S tridoped TiO2nanoparticles were synthesized by a sol–gel method using thiourea as a compound source of carbon (C), nitrogen (N) and sulphur (S).

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