scholarly journals Preparation and Photocatalytic Performance of Nano-TiO2Codoped with Iron III and Lanthanum III

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Wei Guan ◽  
Fangying Ji ◽  
Zhigang Xie ◽  
Rongan Li ◽  
Nan Mei
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Kinetic Studies ◽  
Effective Technique ◽  
Gel Method ◽  
Sol Gel Method ◽  
First Order ◽  
Photocatalytic Activities ◽  
Nanoscale Titanium Dioxide

Nanoscale titanium dioxide (nano-TiO2) was modified via metal doping to improve its photocatalytic activity and utilization of visible light. Nano-TiO2doped with iron III (Fe3+) only, lanthanum III (La3+) only, and both Fe3+/La3+was prepared using the sol-gel method. The photocatalytic activities of the three forms of doped nano-TiO2were evaluated. Metal codoping limited crystal growth of crystal, and the sol-gel method was shown to be an effective technique for doping the lattice of TiO2with Fe3+and La3+. Codoping of nano-TiO2with the tombarthite metal mixture had a synergistic effect of the photocatalytic performance, with the codoped nano-TiO2exhibiting a performance greater than the sum of those of the single-doped nano-TiO2samples. Kinetic studies showed that the photodegradation reaction of methyl orange by nano-TiO2follows the Langmuir-Hinshelwood first order mechanism.

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 Activities of Ce3+-Doped TiO2 Thin Films Prepared by Sol-Gel Method

2011 ◽  
Vol 239-242 ◽  
pp. 1850-1853
Author(s):  
Shu Kai Zheng
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Annealing Temperatures ◽  
Glass Slides ◽  
Photocatalytic Activities

A series of TiO2 thin films with and without Ce3+ doping were successfully obtained on microscope glass slides by sol-gel method. The photocatalytic activities of the pure TiO2 and Ce3+-doped TiO2 thin films were evaluated by the degradation of rhodamine B solution. The effects of both Ce3+ contents and annealing temperatures on the photocatalytic activities of the samples were examined. The results indicated that the TiO2 thin film with an atomic ratio of Ti:Ce=5:1 annealed at 300°C had a higher photocatalytic activity among the samples.

Preparation of Zno-Cr2O3 Composites by a Sol-Gel Method and their Photocatalytic Activities

2012 ◽  
Vol 151 ◽  
pp. 365-367 ◽  
Author(s):  
Kai Yuan Gu ◽  
Zhan En Peng ◽  
Jin Hua Feng ◽  
Feng Qiang Sun
Keyword(s):  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Sol Gel ◽  
Mercury Lamp ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photocatalytic Activities ◽  
Degradation Of Methyl Orange

The ZnO-Cr2O3 composites with different complex proportion were prepared by a sol-gel method. The mol ratio of Zn and Cr element could be tuned by controlling the concentration of the precursors. These composites showed photocatalytic activities in degradation of methyl orange under the irradiation of 300W mercury lamp. And the activities regularly varied with the mol ratio of Zn and Cr. When n（Zn）:n（Cr）=10:1, a composite with best photocatalytic activity could be obtained.

Characterization and Photocatalytic Activity of FeVO4 Photocatalysts Synthesized via a Surfactant-Assisted Sol-Gel Method

2011 ◽  
Vol 197-198 ◽  
pp. 926-930
Author(s):  
Min Wang ◽  
Qiong Liu ◽  
Chen Zhi Jiang
Keyword(s):  
Photocatalytic Activity ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Experimental Conditions ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photodegradation Rate ◽  
Photocatalytic Activities ◽  
Xrd Patterns ◽  
Surfactant Assisted

FeVO4photocatalysts were synthesized via a surfactant-assisted sol-gel method and characterized with X-ray diffraction (XRD), scanning electron microsoope （SEM）and specific surface area (BET). The photocatalytic activity was evaluated by photocatalytic degradation of methyl orange (MO) solution under visible light. The XRD patterns of no-surfactant-assisted, PEG-assisted, CTAB-assisted and SDS-assisted FeVO4, indicate that diffraction peaks can be well indexed as triclinc FeVO4. And the crystalline sizes of samples were evaluated as 113, 69, 66, 76 nm for FVO, FVO-PEG, FVO-CATB and FVO-SDS respectively.The addition of surfactant woul greatly affect the morphology of FeVO4photocatalysts, which can lead to different photocatalytic activities between them. In the experimental conditions used, the PEG-assisted FeVO4product had a much higher photocatalytic activity (the photodegradation rate was about 77% or so in 14h) than the other three products.

Photocatalytic Activities of Fe3+-Doped TiO2 Thin Films Prepared by Sol-Gel Method

2011 ◽  
Vol 233-235 ◽  
pp. 1655-1658
Author(s):  
Shu Kai Zheng
Keyword(s):  
Thin Films ◽  
Photocatalytic Activity ◽  
Sol Gel ◽  
Atomic Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Annealing Temperatures ◽  
Glass Slides ◽  
Photocatalytic Activities ◽  
Rhodamine B Dye

TiO2 and different contents Fe3+-doped TiO2 thin films were successfully obtained on microscope glass slides by Sol-Gel method. Then the photocatalytic activities of the samples were evaluated by the degradation of Rhodamine B dye solution. The effects of both annealing temperatures and Fe3+ contents on the photocatalytic activities of TiO2 thin films were examined. The results indicated that the sample with an atomic ratio of Ti:Fe=7:3 annealed at 500°C had a higher photocatalytic activity.

scholarly journals PHOTOCATALYTIC AND ANTIBACTERIAL ACTIVITIES OF TiO2 AND SILVER AND ZINC DOPED TiO2 NANOPARTICLES

2020 ◽  
Vol 4 (12) ◽  
pp. 92-97
Author(s):  
Chelaramani K. ◽  
Varshney R. ◽  
Bhardwaj A.
Keyword(s):  
Photocatalytic Activity ◽  
Tio2 Nanoparticles ◽  
Sol Gel ◽  
Antibacterial Activities ◽  
Gel Method ◽  
Doped Tio2 ◽  
Sol Gel Method ◽  
Photocatalytic Activities ◽  
Physical And Chemical ◽  
Co Doped

The TiO2 and Ag and Zn doped TiO2 nanoparticles were synthesized by sol-gel method.The sol-gel method is one of the versatile method to prepare doped and co-doped nanoparticles. sol gel method has emerged as simpler and better option than physical and chemical procedures as it is fast, clean and eco-friendly alternative that does not involve any costly instruments .Synthesis of doped and co-doped nanoparticles having good photocatalytic activity have great potential for the degradation of dye. We have tried to develop new effective antimicrobial reagents with good photocatalytic activities which are not resistant to disease causing microbes.

Synthesis of Ag/ZnO Nanocomposite with Excellent Photocatalytic Performance via a Facile Sol-Gel Method

2014 ◽  
Vol 875-877 ◽  
pp. 251-256 ◽  
Author(s):  
Lin Sun ◽  
Rong Shao ◽  
Lan Qin Tang ◽  
Zhi Dong Chen
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Calcination Temperature ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Bet Surface Area ◽  
Molar Ratio ◽  
Gel Method ◽  
Sol Gel Method ◽  
Ft Ir

Ag/ZnO nanocomposite photocatalysts with high photocatalytic performance were successfully synthesized via a facile sol-gel method. The prepared Ag/ZnO products were characterized by XRD, SEM, EDS, FT-IR, BET surface area, TG and DSC. Photodegradation experiments of the samples were carried out by choosing Methylene Blue (MB) as a model target under UV irradiation with homemade photocatalytic apparatus. Among these products, when the molar ratio of Ag to ZnO was fixed at 0.07 and the calcination temperature was around 450 °C, the obtained samples exhibited the highest photocatalytic activity.

Photocatalytic Performance of ZnO Prepared by Sol-Gel Method with the Assistance of CTAB

2014 ◽  
Vol 881-883 ◽  
pp. 256-259
Author(s):  
Hua Fang ◽  
Wei Wu ◽  
Zhun Huang
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Cetyltrimethylammonium Bromide ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Bet Method

ZnO photocatalyst was prepared by sol-gel method with the assistance of cetyltrimethylammonium bromide (CTAB). The specific surface area and structure were characterized by Brunauer-Emmett-Teller (BET) method and X-ray diffraction (XRD), respectively. The photocatalytic activity of ZnO prepared for decolorization of methyl orange (MO) aqueous solution was evaluated. The results show that ZnO (mol ratio of ZnO/CTAB is 10) baked at 500°C holds the best photocatalytic activity.

Synthesis of novel Au@Void@Nb2O5 core–shell nanocomposites with enhanced photocatalytic activity

2018 ◽  
Vol 47 (10) ◽  
pp. 3400-3407 ◽  
Author(s):  
Jiaquan Bai ◽  
Jiao Xue ◽  
Runwei Wang ◽  
Zongtao Zhang ◽  
Shilun Qiu
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Core Shell ◽  
Gel Method ◽  
Sol Gel Method

Novel Au@Void@Nb2O5 core–shell nanocomposites have been fabricated through a facile sol–gel method exhibiting efficient photocatalytic performance and excellent durability.

A porous hybrid material based on calixarene dye and TiO2 demonstrating high and stable photocatalytic performance

2019 ◽  
Vol 7 (34) ◽  
pp. 19852-19861 ◽  
Author(s):  
Yi-Fan Chen ◽  
Jian-Feng Huang ◽  
Min-Hui Shen ◽  
Jun-Min Liu ◽  
Li-Bo Huang ◽  
...  
Keyword(s):  
Hybrid Material ◽  
Photocatalytic Performance ◽  
Sol Gel ◽  
Dual Function ◽  
Gel Method ◽  
Sol Gel Method ◽  
Photocatalytic Activities

A facile strategy to prepare a robust porous hybrid material (HO-TPA-TiO2) is presented by combining TiO2 with calixarene dye, HO-TPA, through a simple sol–gel method, offering efficient and persistent dual-function photocatalytic activities.

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