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

Crystals ◽  
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%.

scholarly journals Synthesis and Characterization of Anatase Titanium Dioxide Nanoparticles Using Egg White Solution via Sol-Gel Method

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Samira Bagheri ◽  
Kamyar Shameli ◽  
Sharifah Bee Abd Hamid
Keyword(s):  
Titanium Dioxide ◽  
Titanium Dioxide Nanoparticles ◽  
Sol Gel ◽  
Egg White ◽  
Gelling Agent ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Egg White Proteins

Anatase titanium dioxide nanoparticles (TNPs) are synthesized by a simple and cost-effective process with and without freshly water-soluble egg white proteins (albumin) via sol-gel method. The main advantage of using egg white proteins as a gelling agent is that it can provide long-term stability for nanoparticles by preventing particles agglomeration. The X-ray diffraction and FTIR results indicate that the synthesized nanoparticles have only the anatase structure without the presence of any other phase impurities. Additionally, the TNPs are characterized by a number of techniques such as thermogravimetric analysis (TGA), X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and ultraviolet visible spectra (UV-vis). The sizes of titanium dioxide nanoparticles with and without using egg white solution are12.55±3.42 nm and21.45±4.21 nm, respectively. The results indicate that egg white solution is a reliable and cheap green gelling agent that can be used as a matrix in the sol-gel method to synthesis tiny size TNPs.

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.

Study of Titanium Dioxide Thin Film by Sol-Gel Method

2014 ◽  
Vol 925 ◽  
pp. 278-281 ◽  
Author(s):  
Sharipah Nadzirah ◽  
Uda Hashim ◽  
N. Malihah
Keyword(s):  
Thin Film ◽  
Titanium Dioxide ◽  
Spin Coating ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method

Titanium dioxide (TiO2) thin films based interdigitated electrodes (IDEs) have been synthesized using sol-gel method with hydrochloric acid (HCl) as catalyst. The prepared TiO2 solution has been deposited onto silicon dioxide (SiO2) substrates via spin-coating technique. Film was annealed at 500 °C and aluminium (Al) IDEs have been fabricated. Finally the X-ray diffraction (XRD) shows high intensity of both anatase and rutile peaks exist on 10 nm TiO2 thin film. Average crystallite size of the nanoparticles is seen to be 25 nm. UvVisible spectroscopic (UvVis) technique was used for the transmittance spectra characterization of the sample.

Conductivities of Titanium Dioxide Obtained via the Sol-Gel Method

2012 ◽  
Vol 545 ◽  
pp. 143-147
Author(s):  
Annie Maria Mahat ◽  
Kelimah Elong ◽  
Nor Diyana Abdul Aziz ◽  
Mohd Sufri Mastuli ◽  
Norlida Kamarulzaman
Keyword(s):  
Titanium Dioxide ◽  
Single Phase ◽  
Annealing Temperature ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Rutile Structure ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Impedance Technique

Titanium dioxide powders were synthesized via a sol-gel method using titanium nitride as the precursor. The structure and morphology of the synthesized powders were investigated and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). XRD results indicate that pure single phase titanium dioxide of rutile structure had been obtained. It was also revealed that annealing temperature plays an important role in the formation of single phase titanium dioxide powders. Increasing heat treatments also modified the shape and surface morphology from chunks and rock-like morphology to a mixture of flaky aggregates. Conductivity studies using a.c. impedance technique was used. The conductivity of the sample annealed at 400 °C is 89 % higher than that annealed at 800 °C and attributed to the phase and morphology of the samples.

scholarly journals Structural and Photocatalytic Properties of TiO2/Zeolite Synthesized using Sol-Gel Method

ALCHEMY ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 25
Author(s):  
Nur Aini ◽  
Fahmi Eksa Sagita ◽  
Khoridatud Diyanah ◽  
Aminatus Arifah ◽  
Siti Nur Chasanah ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Natural Zeolite ◽  
Vibration Mode ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Methylene Blue Degradation ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method

<p class="BodyAbstract">Titanium dioxide (TiO<sub>2</sub>) is supported into natural zeolite to enhance its photocatalytic activity. TiO<sub>2</sub>/zeolite is synthesized using sol-gel method at composition ratio of 5:95; 10:90; 20:80 and 30:70%. Structural properties are measured by X-ray diffraction showed TiO<sub>2</sub>/zeolite in various composition has characteristic of anatase and modernite phase. The energy dispersive spectroscopy characterization shows TiO<sub>2</sub>/zeolite containing Ti element which indicates that TiO<sub>2</sub><sub>i</sub>s successfully supported into natural zeolite<sub>. </sub>Vibration mode of Infrared and Raman spectra tend shifted to higher wavenumber as increasing of TiO<sub>2</sub> content indicating the higher energy vibration due to molecular interaction between TiO<sub>2</sub> and zeolite. Photocatalytic activity test toward methylene blue degradation shows that TiO<sub>2</sub>/zeolite has higher activity than TiO<sub>2</sub> and zeolite itself.</p><p class="BodyAbstract">Keywords: Photocatalyst, titanium dioxide, zeolite<em></em></p>

scholarly journals Synthesis of Nanosized Titanium Dioxide (Tio2) by Sol-Gel Method

2019 ◽  
Vol 9 (2S2) ◽  
pp. 732-735
Keyword(s):  
Titanium Dioxide ◽  
Anatase Phase ◽  
Sol Gel ◽  
Nano Tio2 ◽  
Spectra Analysis ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Nanosized Titanium Dioxide ◽  
Uv Visible

Nanosized Titanium dioxide (TiO2 ) was synthesized by sol-gel method and it was characterized by XRD, EDX, SEM, FTIR and DRS-UV-Visible spectroscopy to study the structural, morphological and optical properties of the prepared nano TiO2 . The presence of elements Ti (54.5%) and O (40.5%) are confirmed by Energy dispersive X-ray spectroscopy (EDX) analysis. The X-ray diffraction analysis (XRD) confirms the presence of Nano crystalline anatase phase TiO2 . The average crystallite size calculated from the XRD data using Debye-Sherrer equation was ~15 nm and the preferred orientation plane was (101). The DRS-UV-Visible spectra analysis shows that the band gap energy (Eg) value calculated for the nano TiO2 was 3.18 eV. The surface morphology of the nanoTiO2 was studied by scanning electron microscopy (SEM) analysis, it shows that the uniform anatase phase TiO2 with nano plate like structure.

scholarly journals Synthesis, characterization and in vitro cytotoxicity study of Co and Ni ferrite nanoparticles prepared by sol-gel method

2021 ◽  
Vol 3 (7) ◽  
Author(s):  
Alexandre Pancotti ◽  
Dener Pereira Santos ◽  
Dielly Oliveira Morais ◽  
Mauro Vinícius de Barros Souza ◽  
Débora R. Lima ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Sol Gel ◽  
Test Sample ◽  
In Vitro Cytotoxicity ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Transmission Electron ◽  
Crystallite Sizes

AbstractIn this study, we report the synthesis and characterization of NiFe2O4 and CoFe2O4 nanoparticles (NPs) which are widely used in the biomedical area. There is still limited knowledge how the properties of these materials are influenced by different chemical routes. In this work, we investigated the effect of heat treatment over cytotoxicity of cobalt and niquel ferrites NPs synthesized by sol-gel method. Then the samples were studied using transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), vibrating sample magnetometer (VSM), Fourier Transform Infrared Spectroscopy Analysis (FTIR), and X-ray fluorescence (XRF). The average crystallite sizes of the particles were found to be in the range of 20–35 nm. The hemocompatibility (erythrocytes and leukocytes) was checked. Cytotoxicity results were similar to those of the control test sample, therefore suggesting hemocompatibility of the tested materials.

Annealing Effects on the Physical and Magnetic Properties of Tb1.5Y1.5Fe5O12 Films Nanoparticles Prepared by Sol-Gel Method

2013 ◽  
Vol 756 ◽  
pp. 91-98 ◽  
Author(s):  
Ftema W. Aldbea ◽  
Noor Bahyah Ibrahim ◽  
Mustafa Hj. Abdullah
Keyword(s):  
Particle Size ◽  
Magnetic Properties ◽  
Annealing Temperature ◽  
Quartz Substrate ◽  
Sol Gel ◽  
Lattice Parameter ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Iron Garnet

Terbium –substituted yttrium iron garnet (Tb1.5Y1.5Fe5O12) films nanoparticles were successfully prepared by a sol-gel method. The films were deposited on the quartz substrate using spin coating technique. To study effect of annealing temperature, the annealing process was executed at 700, 800 and 900 °C in air for 2 hours. The X-ray diffraction (XRD) proved that the pure phase of garnet structure was detected for the film annealed at 900 °C. The lattice parameter increased with the increment of annealing temperature and the highest value of 12.35 Å was obtained at 900 °C. Field Emission Scanning Electron Microscope (FE-SEM) results showed that the particle size increased from 43nm to 56nm as annealing temperature increased from 700 to 900°C. The film’s thickness also affected by increasing of annealing temperature and become thin at 900 °C due to densification process occurred at high annealing temperature. The elemental compositions of the Tb1.5Y1.5Fe5O12 film were detected using an Energy Dispersive X-raySpectroscopy (EDX). Magnetic properties at room temperature were measured using a Vibrating Sample Magnetometer (VSM).The saturation magnetization Ms increased with the annealingtemperature and showed a high value of 104emu/cm3, but the coercivity Hc of the film was decreased due to the increment of the particle size. Normal 0 21 false false false MS X-NONE X-NONE MicrosoftInternetExplorer4 Terbium –substituted yttrium iron garnet (Tb1.5Y1.5Fe5O12) films nanoparticles were successfully prepared by a sol-gel method. The films were deposited on the quartz substrate using spin coating technique. To study effect of annealing temperature, the annealing process was executed at 700, 800 and 900°C in air for 2 hours. The X-ray diffraction (XRD) proved that the pure phase of garnet structure was detected for the film annealed at 900 °C. The lattice parameter increased with the increment of annealing temperature and the highest value of 12.35 Å was obtained at 900 °C. Field Emission Scanning Electron Microscope (FE-SEM) results showed that the particle size increased from 43nm to 56nm as annealing temperature increased from 700 to 900 °C. The film’s thickness also affected by increasing of annealing temperature and become thin at 900 °C due to densification process occurred at high annealing temperature. The elemental compositions of the Tb1.5Y1.5Fe5O12 film were detected using an Energy Dispersive X-ray Spectroscopy (EDX). Magnetic properties at room temperature were measured using a Vibrating Sample Magnetometer (VSM).The saturation magnetization Ms increased with the annealing temperature and showed a high value of 104emu/cm3, but the coercivity Hc of the film was decreased due to the increment of the particle size. st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

Impedance Spectroscopy Study of LiTaO3 Powder Synthesized via Sol-Gel Method

2012 ◽  
Vol 545 ◽  
pp. 275-278 ◽  
Author(s):  
Lili Widarti Zainuddin ◽  
Norlida Kamarulzaman
Keyword(s):  
Room Temperature ◽  
Single Phase ◽  
Sol Gel ◽  
Rhombohedral Structure ◽  
Spectroscopy Study ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Impedance Spectroscopy Study

A ceramics sample of LiTaO3 was prepared using a sol-gel method. The sample is annealed at 750 °C for 48 hours. X-ray diffraction analysis indicate the formation of single phase, rhombohedral structure. An ac impedance study was used to analyse the conductivity of LiTaO3 at room temperature and at various temperatures.

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