Physicochemical properties and photocatalytic activities of TiO2-films prepared by sol–gel methods

In order to find an effective way to degrade the effluent, the Cu/TiO2, La/TiO2, Cr/TiO2 films with unique 3-D network structures were prepared using Ti(OBu)4 by sol-gel method loaded on the gauzes. These films structures were characterized by means of XRD and SEM. The effects of doped TiO2 films and combination of magnetic field and doped TiO2 films on the degradation of methyl orange (MO) were studied. The results indicated that after combinating the magnetic field, the photocatalysis efficiency of doped TiO2 films have been improved,especially the influence on Cu/TiO2 film was more obvious than other films.When magnetic intensity was around 30mT ,the MO degradation ratio went up to 60% by using Cu/TiO2 films.But the influences of magnetic intensity on photocatalytic activities of doped TiO2 films had a maximum value which was 30mT.

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Effects of pH Values on the Physicochemical Properties and Photocatalytic Activities of Nitrogen-doped TiO2

Journal of Inorganic Materials ◽

10.3724/sp.j.1077.2008.00387 ◽

2008 ◽

Vol 23 (2) ◽

pp. 387-392 ◽

Cited By ~ 2

Author(s):

Yuan BAI

Keyword(s):

Physicochemical Properties ◽

Nitrogen Doped ◽

Ph Values ◽

Photocatalytic Activities ◽

Effects Of Ph

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Fabrication of F–Nb co-doped transparent conducting TiO2 films using the sol-gel method

Materials Science in Semiconductor Processing ◽

10.1016/j.mssp.2021.105675 ◽

2021 ◽

Vol 126 ◽

pp. 105675

Author(s):

Yang Ren ◽

Haiyan He ◽

Yunwei Wang ◽

Ying Gong ◽

Gaoyang Zhao

Keyword(s):

Sol Gel ◽

Tio2 Films ◽

Gel Method ◽

Sol Gel Method ◽

Transparent Conducting ◽

Co Doped

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Chemical and Structural Characterization of Amorphous and Crystalline Alumina Obtained by Alternative Sol–Gel Preparation Routes

Materials ◽

10.3390/ma14071761 ◽

2021 ◽

Vol 14 (7) ◽

pp. 1761

Author(s):

Izabela Rutkowska ◽

Jakub Marchewka ◽

Piotr Jeleń ◽

Mateusz Odziomek ◽

Mateusz Korpyś ◽

...

Keyword(s):

Infrared Spectroscopy ◽

Aluminum Oxide ◽

Physicochemical Properties ◽

Sol Gel ◽

Magic Angle Spinning ◽

Magic Angle ◽

Bet Method ◽

Gel Preparation ◽

Angle Spinning ◽

Middle Infrared

Aluminum oxide is one of the most commonly used materials in the industry. It is used in the field of catalysis, refractories, and optics. Despite the fact that there are many techniques available, there is still a great challenge in obtaining a material with desired and designed properties. Nevertheless, there is a great flexibility in making customized alumina materials with desired physicochemical properties synthesized by sol–gel methods. This work consists in characterizing the physicochemical properties of sol–gel synthesized aluminum oxide using different sol–gel preparation routes. Three different sols were obtained by using organic precursors and underwent thermal treatment. The structure (Middle Infrared Spectroscopy, Diffused Reflectance Infrared Spectroscopy, X-ray Diffraction, Magic Angle Spinning Nuclear Magnetic Resonance) and microstructure (Scanning Electron Microscopy with Electron Dispersive Spectroscopy) tests of the materials were carried out. The specific surface area was determined by using the Brunauer–Emmett–Teller (BET) method. Thermal analysis was performed for all the powders, in order to analyze the specific temperature of materials transformation.

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Synthesis and physicochemical properties of graphene/ZrO2 composite aerogels

RSC Advances ◽

10.1039/c4ra16024j ◽

2015 ◽

Vol 5 (16) ◽

pp. 11738-11744 ◽

Cited By ~ 12

Author(s):

Dongman Guo ◽

Yun Lu ◽

Yibo Zhao ◽

Xuetong Zhang

Keyword(s):

Physicochemical Properties ◽

Supercritical Fluid ◽

Sol Gel ◽

Drying Process ◽

Gel Method ◽

Sol Gel Method ◽

Supercritical Fluid Drying ◽

Composite Aerogels

Graphene/ZrO2 composite aerogels with large BET areas have been synthesized using a sol–gel method together with a supercritical fluid drying process.

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The Preparation and Photocatalytic Activity of SWNTs Doped ZnO/TiO2 Compound Films

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.97-101.1611 ◽

2010 ◽

Vol 97-101 ◽

pp. 1611-1615 ◽

Cited By ~ 1

Author(s):

Qing Wang ◽

Xin Li Li ◽

Wei Nie ◽

Yong Mei Xia ◽

Jian Feng Dai

Keyword(s):

Photocatalytic Activity ◽

Absorption Spectra ◽

Sol Gel ◽

Composite Films ◽

Wavelength Region ◽

Tio2 Films ◽

X Ray Diffraction ◽

Sol Gel Process ◽

Doped Zno ◽

Walled Carbon Nanotubes

The ZnO/TiO2 composite films were deposited over glass using spin coating technique by sol-gel process. Single-walled carbon nanotubes (SWNTs) were used to modify the ZnO/TiO2 films successfully in this paper. The structure and composition of the ZnO/TiO2 composite and SWNTs doped ZnO/TiO2 composite were characterized by X-ray diffraction (XRD). The morphology of samples was characterized by scanning electron microscopy (SEM). The photocatalytic activity was investigated by photocatalytic degradation of aqueous methyl orange under ultraviolet (UV) radiation. The UV-vis absorption spectra of the ZnO/TiO2 films and SWNTs doped ZnO/TiO2 films in the wavelength region 200~800 nm were obtained. The results indicate that the SWNTs addition can decrease the grain size of ZnO/TiO2, which can enhance the photocatalytic activity. UV-vis absorption spectra of SWNTs-ZnO/TiO2 showed obvious blue shifts compared with ZnO/TiO2. The optimal amount of doping SWNTs is 1% according to this research. The enhanced mechanism of the SWNTs for the photocatalytic activity in ZnO/TiO2 films was analyzed in this article.

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