Preparation of ZnO nanopowder by a novel ultrasound assisted non-hydrolytic sol–gel process and its application in photocatalytic degradation of C.I. Acid Red 249

2013 ◽  
Vol 233 ◽  
pp. 325-330 ◽  
Author(s):  
Yonggang Peng ◽  
Junling Ji ◽  
Xiaoyan Zhao ◽  
Huaixin Wan ◽  
Dajun Chen
Keyword(s):  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Zno Nanopowder ◽  
Sol Gel Process ◽  
Ultrasound Assisted

Photocatalytic Degradation of Methyl Orange by a New Photoctalyst Multi-Walled Carbon Nanotues (MWCNTs)/TiO2/CdS Nanocomposite

2012 ◽  
Vol 184-185 ◽  
pp. 1084-1089
Author(s):  
Ou Yang Ke ◽  
Xie Shan ◽  
Xiao Ou Ma ◽  
Meng Li ◽  
Qiu Lian Feng
Keyword(s):  
Methyl Orange ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Oxidative Degradation ◽  
Pure Tio2 ◽  
First Order Kinetics ◽  
Composite Photocatalysts ◽  
Sol Gel Process ◽  
Light Absorbance

Composite photocatalysts using TiO2 coated by Multi-walled carbon nanotues(MWCNTs) and CdS were prepared by sol-gel process. The purpose of adding MWCNTs and CdS was extending the light absorbance range of pure TiO2 to visible light. Methyl orange (MO) was chosen as an object. The degradation of MO by MWCNTs/TiO2/CdS composite photocatalysts under visible light irradiation was studied. The results showed that the presence of MWCNTs and CdS can enhance the photoefficiency of TiO2 greatly. In addition, The photocatalyst was used for five cycles with photocatalytic degradation efficiency still higher than 96%. The photocatalytic degradation of MO followed a first-order kinetics according to the Langmuir-Hinshelwood model. A possible decomposing mechanism for the photocatalytic oxidative degradation was also discussed. The results of the study showed the potential use of MWCNTs/TiO2/CdS composite in degradation of toxic organic pollutants.

N-doped, S-doped TiO2nanocatalysts: synthesis, characterization and photocatalytic activity in the presence of sunlight

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37096-37101 ◽  
Author(s):  
P. V. R. K. Ramacharyulu ◽  
Dipak Bapurao Nimbalkar ◽  
J. Praveen Kumar ◽  
G. K. Prasad ◽  
Shyue-Chu Ke
Keyword(s):  
Photocatalytic Activity ◽  
Catalytic Activity ◽  
Low Temperature ◽  
Photocatalytic Degradation ◽  
Hydrothermal Treatment ◽  
Sol Gel ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Toxic Chemical ◽  
Sol Gel Process

N doped and S doped nano TiO2catalysts were synthesized by a sol–gel process followed by hydrothermal treatment at low temperature and tested for catalytic activity by natural sunlight photocatalytic degradation of a toxic chemical warfare agent.

scholarly journals Photocatalytic degradation of phenol and benzoic acid using zinc oxide powders prepared by the sol–gel process

2013 ◽  
Vol 52 (3) ◽  
pp. 517-523 ◽  
Author(s):  
Hadj Benhebal ◽  
Messaoud Chaib ◽  
Thierry Salmon ◽  
Jérémy Geens ◽  
Angélique Leonard ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Benzoic Acid ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Oxide Powders ◽  
Sol Gel Process

Photocatalytic degradation of trichloroethylene using N-doped TiO2 prepared by a simple sol–gel process

2009 ◽  
Vol 35 (1) ◽  
pp. 43-53 ◽  
Author(s):  
Yuta Yokosuka ◽  
Kyoichi Oki ◽  
Hiromasa Nishikiori ◽  
Yukichi Tatsumi ◽  
Nobuaki Tanaka ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Doped Tio2 ◽  
Sol Gel Process

Preparation of Nano-TiO2/Diatomite Composites by Non-hydrolytic Sol–Gel Process and its Application in Photocatalytic Degradation of Crystal Violet

Silicon ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 927-935 ◽  
Author(s):  
Rachida Cherrak ◽  
Mohammed Hadjel ◽  
Noureddine Benderdouche ◽  
Mehdi Adjdir ◽  
Adel Mokhtar ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Crystal Violet ◽  
Sol Gel ◽  
Nano Tio2 ◽  
Sol Gel Process

scholarly journals Development of TiO2-coated YSZ/silica nanofiber membranes with excellent photocatalytic degradation ability for water purification

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jin Young Huh ◽  
Jongman Lee ◽  
Syed Zaighum Abbas Bukhari ◽  
Jang-Hoon Ha ◽  
In-Hyuck Song
Keyword(s):  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Recovery Process ◽  
Surface Areas ◽  
Polymeric Particles ◽  
Sol Gel Process ◽  
Nanofiber Membranes ◽  
Degradation Ability ◽  
High Separation ◽  
Silica Nanofiber

Abstract Numerous reports have elucidated that TiO2 nanoparticles (TiO2-NPs) exhibit respectable photocatalytic degradation capacities due to their high specific surface areas. However, the current recovery process leads to a loss of TiO2-NPs; therefore, there is a need to immobilize TiO2-NPs on the substrate used. Herein, TiO2-coated yttria-stabilized zirconia/silica nanofiber (TiO2-coated YSZ/silica NF) was prepared by coating TiO2 on the surface of YSZ/silica NF using a sol–gel process. The TiO2 coating layer on the nanofiber surface improved the separation ability of the membrane as well as the photocatalytic degradation ability. The pore size of the TiO2-coated YSZ/silica NF membrane was less than that of the pristine YSZ/silica NF membrane, and it rejected over 99.6% of the 0.5 μm polymeric particles. In addition, the TiO2-coated YSZ/silica NF membrane showed excellent adsorption/degradation of humic acid (HA, 88.2%), methylene blue (MB, 92.4%), and tetracycline (TC, 99.5%). Six recycling tests were performed to evaluate the reusability of the TiO2-coated YSZ/silica NF membrane. The adsorption/degradation efficiency for HA, MB, and TC decreased by 3.7%, 2.8%, and 2.2%, respectively. We thus verified the high separation ability, excellent photocatalytic degradation ability, and excellent reusability of the TiO2-coated YSZ/silica NF membranes.

Preparation of surface-modified ZnO quantum dots through an ultrasound assisted sol–gel process

2015 ◽  
Vol 346 ◽  
pp. 111-114 ◽  
Author(s):  
E Moghaddam ◽  
AA Youzbashi ◽  
A Kazemzadeh ◽  
MJ Eshraghi
Keyword(s):  
Quantum Dots ◽  
Sol Gel ◽  
Sol Gel Process ◽  
Ultrasound Assisted ◽  
Zno Quantum Dots ◽  
Surface Modified
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