scholarly journals Preparation and Characterization of XRD Nano Cu-TiO2 using Sol-Gel Method

2018 ◽  
Author(s):  
Arizka Tamarani ◽  
Rahadian Zainul ◽  
Indang Dewata
Keyword(s):  
Crystallite Size ◽  
Anatase Phase ◽  
Sol Gel ◽  
Rutile Phase ◽  
Doping Agent ◽  
Gel Method ◽  
Sol Gel Method ◽  
Temperature Range

One of the reported doping agent to increase TiO2 activity is Cu. In this research, TiO2 was prepared by So-Gel method. Preparation was performed by calcinaton at the temperature range of 400, 500, 600ᵒC for 2 hours with a corresponding dopan concentration of 0%, 1%, 3%, 5% mol of TiO2. The nanoparticle materials was characterized using XRD. It is found that anatase phase occur in the calcinations temperature of 400ᵒC and transform to rutile phase at 500ᵒC. The crystallite size of Cudoped TiO2 with dopan concentration of 5% are found 4.63 nm, 8.70 nm, 6.09 nm respectively at 400ᵒC, 500ᵒC, 600ᵒC.

Characterization of Ta-Doped Titanium Dioxide Nano Particles Produced by Sol-Gel Method

2013 ◽  
Vol 685 ◽  
pp. 150-154
Author(s):  
Akhlaq Ahmad ◽  
Liaqat Ali ◽  
Naveed Ramzan
Keyword(s):  
Phase Transformation ◽  
Titanium Dioxide ◽  
Sol Gel ◽  
Industrial Effluents ◽  
Rutile Phase ◽  
Nano Particles ◽  
Gel Method ◽  
Sol Gel Method ◽  
Analytical Tools

Titanium dioxide also known as titania is a ceramic material. It is probably the most investigated inorganic oxide in recent years because of its non toxic nature, chemical stability and its potential effectiveness for destruction of toxic organic compounds in industrial effluents. In the present study pure and Ta doped TiO2 nanosize particles were prepared by sol-gel method. Samples with doping concentrations varying from 0.50 to 1.50 at % Ta and calcinations temperatures from 300 to 900 oC were synthesized. Changes taken place in phase transformation of the samples doped with Ta and undoped TiO2 were investigated. The effect of dopant concentration, calcinations temperature and particles size on anatase to rutile phase transformation was studied in detail. The samples were analyzed by various standard analytical tools.

Preparation of Ti/B Binary Oxides by Sol-Gel Method and Their Photocatalytic Activity for Stoichiometric H2O Decomposition

1996 ◽  
Vol 454 ◽  
Author(s):  
S. C. Moon ◽  
S. Tabata ◽  
K. Okada ◽  
M. Fujiki ◽  
H. Mametsuka
Keyword(s):  
Titanium Oxide ◽  
Anatase Phase ◽  
Aqueous Suspension ◽  
Sol Gel ◽  
Rutile Phase ◽  
Binary Oxide ◽  
Gel Method ◽  
Sol Gel Method ◽  
Binary Oxides ◽  
Photocatalytic Activities

ABSTRACTA titanium-boron binary oxide has been prepared by the sol-gel method and characterized using SEM, TEM, UV-VIS reflectance, and X-ray diffraction spectroscopies. These measurements indicated that the obtained Ti/B gel with no treatment exhibited an amorphous structure. After calcination in O2, the crystalline structure of titanium oxide species in the Ti/B binary oxide was changed while boron oxide species maintained in the state of amorphous. Titanium oxide species in the Ti/B binary oxide calcined at 673 K showed an anatase phase of TiO2, and changed with the calcination temperatures from anatase phase to rutile phase. The Pt loaded Ti/B photocatalysts in aqueous suspension system decomposed water stoichiometrically under UV-irradiation. Their photocatalytic activities decreased with increasing the calcination temperature, indicating the photocatalytic activities of the Ti/B binary oxides were depended on the crystal phase of titanium oxide in the Ti/B photocatalysts.

scholarly journals An Amalgam of Mg-Doped TiO2 Nanoparticles Prepared by Sol-Gel Method for Effective Antimicrobial and Photocatalytic Activity

2021 ◽  
Author(s):  
N NITHYA ◽  
S Gopi ◽  
G Bhoopathi
Keyword(s):  
Crystallite Size ◽  
Anatase Phase ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
Gram Positive ◽  
Tem Analysis ◽  
Gram Negative ◽  
Gel Method ◽  
Sol Gel Method ◽  
And Shifts

Abstract In this study, undoped and Magnesium doped TiO2 nanoparticles (Mg-TiO2 NPs) were successfully synthesized via a simple sol-gel method cost-effectively. The prepared Mg- TiO2 NPs were characterized by UV-Vis, FTIR, PL, XRD, FESEM, TEM, and EDAX. UV – Visible Spectroscopy showed that an increase in the optical bandgap concerning the concentration of dopant Mg increases. The bandgap values were found to be 3.57-3.54 eV. FTIR spectra showed that the presence of the characteristic stretching and bending vibrational band of Ti – O bonding at 468 cm-1 and shifts in vibrational bands were observed for Mg-TiO2 NPs. PL spectra of Mg- TiO2 NPs at different concentrations exhibit a strong UV emission band. X-ray diffraction confirmed the formation of the tetragonal anatase phase. The average crystallite size of prepared samples was found to be 22-19 nm. The average crystallite size of Mg- TiO2 NPs decreases with increasing the concentration of dopant Mg. The FESEM and TEM analysis confirmed that the spherical morphology for both TiO2 and Mg-TiO2 NPs. SAED pattern confirms the crystalline nature of prepared samples. EDAX spectra confirm the presence of Ti, O, and Mg and confirm that Mg2+ ions are present in the TiO2 lattices. The prepared samples were investigated against gram-positive (B. subtilis and S. aureus) and gram-negative (P. eugenia and K. Pneumonia) bacteria. The prepared samples showed potent antibacterial activity against gram-negative bacteria than the gram-positive bacteria. The prepared samples show the excellent photocatalytic degradation for Methylene blue.

Characterization of CoCrFeO 4 Nanocrystals Prepared by a Sol-Gel Method

2001 ◽  
Vol 18 (5) ◽  
pp. 692-694 ◽  
Author(s):  
Xiong Gang ◽  
Mai Zhen-Hong ◽  
Wang Chao-Ying ◽  
Ni Yong-Ming ◽  
Zhao Zhong-Xian ◽  
...  
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method
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