One-step sol–gel preparation and enhanced photocatalytic activity of porous polyoxometalate–tantalum pentoxide nanocomposites

A new method for fast and simple synthesis of crystalline TiO2 nanoparticles with photocatalytic activity was developed by carrying out a classic sol–gel reaction directly under vacuum. The use of microwaves for fast heating of the reaction medium further reduces synthesis times. When the solvent is completely removed by vacuum, the product is obtained in the form of a powder that can be easily redispersed in water to yield a stable nanoparticle suspension, exhibiting a comparable photocatalytic activity with respect to a commercial product. The present methodology can, therefore, be considered a process intensification procedure for the production of nanotitania.

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Sol-gel Preparation of TiO2-Al2O3 Composite Materials to Promote Photocatalytic Activity

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681205666150611191945 ◽

2015 ◽

Vol 5 (1) ◽

pp. 8-14 ◽

Cited By ~ 2

Author(s):

Wenjei Zhang ◽

Chuanguo Li ◽

Ruyuan Li

Keyword(s):

Photocatalytic Activity ◽

Composite Materials ◽

Sol Gel ◽

Al2o3 Composite ◽

Gel Preparation

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One-step non-hydrolytic sol–gel preparation of efficient V2O5-TiO2 catalysts for VOC total oxidation

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2009.10.018 ◽

2010 ◽

Vol 94 (1-2) ◽

pp. 38-45 ◽

Cited By ~ 59

Author(s):

Damien P. Debecker ◽

Karim Bouchmella ◽

Romain Delaigle ◽

Pierre Eloy ◽

Claude Poleunis ◽

...

Keyword(s):

Sol Gel ◽

Total Oxidation ◽

One Step ◽

Gel Preparation

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Co-Sol–Gel Preparation of Novel TiO2-Al2O3 Nanocomposite with Enhanced Photocatalytic Activity

Advanced Science Letters ◽

10.1166/asl.2012.3273 ◽

2012 ◽

Vol 16 (1) ◽

pp. 332-335 ◽

Cited By ~ 1

Author(s):

Wenjie Zhang ◽

Ruyuan Li ◽

Bo Yang ◽

Jiawei Bai

Keyword(s):

Photocatalytic Activity ◽

Sol Gel ◽

Gel Preparation

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Sol–gel preparation of TiO2–ZrO2 thin films supported on glass rings: Influence of phase composition on photocatalytic activity

Thin Solid Films ◽

10.1016/j.tsf.2005.07.256 ◽

2006 ◽

Vol 502 (1-2) ◽

pp. 125-131 ◽

Cited By ~ 60

Author(s):

María D. Hernández-Alonso ◽

Isabel Tejedor-Tejedor ◽

Juan M. Coronado ◽

Javier Soria ◽

Marc A. Anderson

Keyword(s):

Thin Films ◽

Photocatalytic Activity ◽

Phase Composition ◽

Sol Gel ◽

Gel Preparation

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One-step sol-gel preparation of ultralow-refractive-index porous coatings with mulberry-like hollow silica nanostructures

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2018.01.013 ◽

2018 ◽

Vol 341 ◽

pp. 57-63 ◽

Cited By ~ 5

Author(s):

Xinshu Zou ◽

Chaoyou Tao ◽

Lianghong Yan ◽

Fan Yang ◽

Haibing Lv ◽

...

Keyword(s):

Refractive Index ◽

Sol Gel ◽

Hollow Silica ◽

Porous Coatings ◽

One Step ◽

Silica Nanostructures ◽

Gel Preparation

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Hydrothermal Treatment and its Influence on the Structure of Phosphorous Doped Titania

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.1775 ◽

2011 ◽

Vol 287-290 ◽

pp. 1775-1778

Author(s):

Si Yao Guo ◽

Feng Fei Wang ◽

Li Jiang ◽

Dong Po He

Keyword(s):

Photocatalytic Activity ◽

Hydrothermal Method ◽

Hydrothermal Treatment ◽

Photoelectron Spectroscopy ◽

Lattice Structure ◽

Sol Gel ◽

Xenon Lamp ◽

X Ray ◽

One Step ◽

Doped Titania

P-doped titania was synthesized by a one step hydrothermal method and sol-gel method, which is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The samples prepared by hydrothermal method demonstrate higher photocatalytic activity toward the degradation of methylene blue under xenon lamp which has similar spectra to solar light, and also is much superior to that of the commercial P25. The as prepared P-doped titania shows a small particle size (the minimum reaches to 4.5 nm). In addition, the samples prepared by hydrothermal treatment could severely influence the crystal lattice structure. Morever, P-doped titania can further enhacnce the photocatalytic activity effectively, and hydrothermal treatment is a very suitable method for the synthesis of P-doped titania. This excellent performance could endow the as-prepared P-doped titania potential in purifying wastewater.

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Co-Sol-Gel Preparation of SiO2-Doped TiO2 on Adsorption and Photocatalytic Degradation of Methyl Orange

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.48-49.345 ◽

2011 ◽

Vol 48-49 ◽

pp. 345-348

Author(s):

Li Li Yang ◽

Yan Liang Qu ◽

Wen Jie Zhang

Keyword(s):

Photocatalytic Activity ◽

Methyl Orange ◽

Adsorption Equilibrium ◽

Irradiation Time ◽

Sol Gel ◽

Methyl Orange Degradation ◽

Doped Tio2 ◽

Degradation Rates ◽

Gel Preparation ◽

Degradation Of Methyl Orange

A co-sol-gel method was used to prepare SiO2-doped TiO2. The amount of ethyl silicate added into the precursor, calcination temperature and time, adsorption equilibrium, and photocatalytic activity of the material were investigated as the factor of degradation efficiency. With the optimum composition of the precursor, the prepared gel calcinated at 500 oC for 3 h showed the highest photocatalytic activity. After 30 min stirring to reach adsorption equilibrium, adsorption contributed less than 2% to the total decoloration of methyl orange on the SiO2-doped TiO2 material. Photocatalytic methyl orange degradation continued with increasing irradiation time. Methyl orange degradation rates after 30 min and 100 min were 31.1% and 96.9%, respectively.

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