scholarly journals Photocatalytic degradation of methylene blue using ZnO and 2%Fe–ZnO semiconductor nanomaterials synthesized by sol–gel method: a comparative study

2019 ◽  
Vol 1 (10) ◽  
Author(s):  
Kalpesh Anil Isai ◽  
Vinod Shankar Shrivastava
Keyword(s):  
Methylene Blue ◽  
Comparative Study ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Semiconductor Nanomaterials ◽  
Zno Semiconductor

scholarly journals Photocatalytic degradation of methylene blue under natural sunlight using iron titanate nanoparticles prepared by a modified sol–gel method

2020 ◽  
Vol 7 (9) ◽  
pp. 200708
Author(s):  
Z. Z. Vasiljevic ◽  
M. P. Dojcinovic ◽  
J. D. Vujancevic ◽  
I. Jankovic-Castvan ◽  
M. Ognjanovic ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Oh Radicals ◽  
Simple Method ◽  
Gel Method ◽  
Natural Sunlight ◽  
Sol Gel Method ◽  
Light Region ◽  
Iron Titanate

The aim of this work was to synthesize semiconducting oxide nanoparticles using a simple method with low production cost to be applied in natural sunlight for photocatalytic degradation of pollutants in waste water. Iron titanate (Fe 2 TiO 5 ) nanoparticles with an orthorhombic structure were successfully synthesized using a modified sol–gel method and calcination at 750°C. The as-prepared Fe 2 TiO 5 nanoparticles exhibited a moderate specific surface area. The mesoporous Fe 2 TiO 5 nanoparticles possessed strong absorption in the visible-light region and the band gap was estimated to be around 2.16 eV. The photocatalytic activity was evaluated by the degradation of methylene blue under natural sunlight. The effect of parameters such as the amount of catalyst, initial concentration of the dye and pH of the dye solution on the removal efficiency of methylene blue was investigated. Fe 2 TiO 5 showed high degradation efficiency in a strong alkaline medium that can be the result of the facilitated formation of OH radicals due to an increased concentration of hydroxyl ions.

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.

Study on photocatalytic degradation of gaseous dichloromethane using pure and iron ion-doped TiO2 prepared by the sol–gel method

Chemosphere ◽  
2007 ◽  
Vol 66 (11) ◽  
pp. 2142-2151 ◽  
Author(s):  
Wen-Chi Hung ◽  
Ssu-Han Fu ◽  
Jeou-Jen Tseng ◽  
Hsin Chu ◽  
Tzu-Hsing Ko
Keyword(s):  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Iron Ion ◽  
Gel Method ◽  
Doped Tio2 ◽  
Sol Gel Method

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.

Photocatalytic degradation of the antibiotic levofloxacin using highly crystalline TiO2 nanoparticles

2014 ◽  
Vol 38 (7) ◽  
pp. 3220-3226 ◽  
Author(s):  
Sushil Kumar Kansal ◽  
Pranati Kundu ◽  
Swati Sood ◽  
Randeep Lamba ◽  
Ahmad Umar ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Tio2 Nanoparticles ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Antibiotic Drug ◽  
Anatase Nanoparticles

Highly crystalline TiO2 (anatase) nanoparticles were synthesized by a facile sol–gel method for the photocatalytic degradation and inhibition of the commonly used antibiotic drug, levofloxacin.

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