Photocatalytic Degradation of Methylene Blue Solution Using Nanometer TiO2 Film

2011 ◽  
Vol 287-290 ◽  
pp. 1823-1826
Author(s):  
Peng Tian ◽  
Hui Zhang ◽  
Zhen Yan Shi ◽  
Ye Lv ◽  
Ting Ting Zhao ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Irradiation Time ◽  
Sol Gel ◽  
Solution Temperature ◽  
Tetrabutyl Titanate ◽  
Complexing Agent ◽  
Methylene Blue Solution ◽  
Irradiation Intensity ◽  
Blue Solution

The nanometer TiO2film is achieved by sol-gel method, and using tetrabutyl titanate as source, ethanol as solvent, acetic acid as complexing agent. The nanometer TiO2film is prepared by using spin coating method. Methylene blue solution is degraded by the nanometer TiO2film. The photocatalytic degradation efficiency is influenced by the nanometer TiO2film amount, irradiation time, the UV irradiation intensity and solution temperature. The short degradation time shows that the nanometer TiO2film can be used as an easy and efficient method to degrade methylene blue solution.

Preparation and Photocatalytic Activity of TiO2/Opal Composite

2013 ◽  
Vol 668 ◽  
pp. 13-16
Author(s):  
Qing Shan Li ◽  
Biao Zhan ◽  
Wei Hong ◽  
Guang Zhong Xing
Keyword(s):  
Methylene Blue ◽  
Uv Light ◽  
Sol Gel ◽  
Tetrabutyl Titanate ◽  
Methylene Blue Solution ◽  
Photocatalytic Decolorization ◽  
Uv Light Irradiation ◽  
Photocatalytic Activities ◽  
Blue Solution ◽  
Gel Technique

Opal as a carrier, tetrabutyl titanate as a titanium source, TiO2 loaded on opal was prepared by sol-gel technique. The photocatalysts were characterized by XRD, TEM and UV-VIS absorption spectrum. Their photocatalytic activities were examined by the photocatalytic decolorization of methylene blue solution under UV light irradiation. The effects of calcination temperature, the amount of TiO2 loading and pH on photocatalytic activities were discussed. The results show that TiO2 supported on opal induced enhancement of photocatalytic decolorization rant and TiO2 doping is about 30 wt. % with 92.15% of decolorization rate at 700°C.

Photocatalytic Degradation of Bromophenol Blue Solution Using Nanometer TiO2

2013 ◽  
Vol 643 ◽  
pp. 182-185
Author(s):  
Peng Tian ◽  
Jing Zeng ◽  
Hong Bo Zhang ◽  
Wen Le Du ◽  
Lu Sun ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Titanium Tetrachloride ◽  
Raw Materials ◽  
Irradiation Time ◽  
Bath Temperature ◽  
Solution Temperature ◽  
Bromophenol Blue ◽  
Irradiation Intensity ◽  
Blue Solution ◽  
Degradation Time

Titanium tetrachloride with inorganic salts as raw materials in the experiment, TiO2is prepared by the hydrolyzation method in (NH4)2SO4-modified TiCl4solution, the maximal photocatalytic activity is observed at the mole ratio of TiCl4: (NH4)2SO4=1:2, the water-bath temperature of 90°C. Bromophenol blue solution is degraded by the nanometer TiO2. The photocatalytic degradation efficiency is influenced by the nanometer TiO2amount, irradiation time, the UV irradiation intensity and solution temperature. The short degradation time shows that the nanometer TiO2can be used as an easy and efficient method to degrade bromophenol blue solution.

Preparation and Characterization of Diatomite Supported Cu-Doped TiO2 Photocatalysts

2013 ◽  
Vol 853 ◽  
pp. 73-78
Author(s):  
Yan Xi Deng ◽  
Chuan Chuan Liu ◽  
Guang Yang
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Methylene Blue Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Photocatalytic Activities ◽  
Blue Solution

Diatomite supported Cu-doped TiO2 photocatalysts were synthesized by sol-gel method and characterized by X-ray diffraction (XRD), SEM and UV-vis diffuses reflectance of spectroscopy (DRS). The photocatalytic activity was evaluated by photocatalytic degradation of methylene blue solution under visible light irradiation. The results show that TiO2/diatomite ratio had a great influene on their photocatalytic activities. All prepared Cu-TiO2/diatomite had a better photocatalytic activities in comparison with Cu-TiO2 and the Cu-TiO2(30)/diatomite had higher photocatalytic activity than others. The photocatalytic degradation of methylene blue is due to the breaking of the chormophoric group, rather than the simple decoloration.

Photocatalytic Degradation of Bisphenol A in Wastewater Using Nanometer TiO2 Film

2011 ◽  
Vol 287-290 ◽  
pp. 1815-1818
Author(s):  
Peng Tian ◽  
Hui Zhang ◽  
Zhen Yan Shi ◽  
Miao Yi Zhang ◽  
Lai Wei ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Irradiation Time ◽  
Sol Gel ◽  
Tetrabutyl Titanate ◽  
Solution Ph ◽  
Titanium Dioxide Films ◽  
Irradiation Intensity ◽  
Coating Method ◽  
Degradation Time ◽  
Aging In Air

In this paper, the nanometer TiO2 film is prepared by sol-gel method, using tetrabutyl titanate as source, ethanol as solvent. A transparent sol aging in air 30min, titanium dioxide films are prepared by using spin coating method. The BPA solution is degraded by the nanometer TiO2 film. The photocatalytic degradation efficiency is influenced by the initial BPA concentration, the solution pH, irradiation time and the UV irradiation intensity. The short degradation time shows that the nanometer TiO2 film can be used as an easy and efficient method to degrade the BPA solution.

Photocatalytic degradation of methylene blue solution by diphenylanthrazoline compounds

2017 ◽  
Vol 30 (12) ◽  
pp. e3712 ◽  
Author(s):  
Tianchu Zhao ◽  
Rui Liu ◽  
Jiapeng Lu ◽  
Xiaolin Zhu ◽  
Xuhong Zhu ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Methylene Blue Solution ◽  
Blue Solution

Research on the Photocatalytic Degradability of Methylene Blue Solution by Photocatalysis Bamboo Charcoal Fiber Knitted Fabric

2011 ◽  
Vol 332-334 ◽  
pp. 1040-1044 ◽  
Author(s):  
Qiu Mei Wang ◽  
Lei Tan ◽  
Rong Wen Zhou ◽  
Zhi Wei Zou ◽  
Xue Mei Xu
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Degradation Rate ◽  
Liquid Level ◽  
Knitted Fabric ◽  
Bamboo Charcoal ◽  
Methylene Blue Solution ◽  
Initial Concentration ◽  
Blue Solution ◽  
Degradation Effect

In this paper, the photocatalytic degradation of methylene blue solution by photocatalysis bamboo charcoal fiber knitted fabric was studied. The relationships were analyzed between the photocatalytic degradation rate and the reaction time, the initial concentration, pH of methylene blue solution, and the distance between the UV light centre and liquid level. The results indicates that there is an remarkable photocatalytic degradation effect of methylene blue solution by photocatalysis bamboo charcoal fiber knitted fabric under UV-irradiation, even the degradation rate could reach to 67.02%. The degradation effect was better with lower initial concentration of methylene blue solution, higher initial pH，and the shorter distance between light centre and liquid level.

Photocatalytic Degradation Study of Titania Sol-Gel Coated on Commercial Unglazed Ceramic Tiles

2017 ◽  
Vol 751 ◽  
pp. 819-824
Author(s):  
Pat Sooksaen ◽  
Nawapan Saowaros ◽  
Khemphatsorn Ngamkaruhasereethorn ◽  
Angkoona Pringkasemchai
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Ceramic Surface ◽  
Ceramic Tiles ◽  
Degradation Study ◽  
Blue Solution ◽  
Titania Sol ◽  
20 Nm ◽  
Tile Surface

In this research photocatalytic degradation of nanotitania synthesized via sol-gel method and coated on commercial unglazed ceramic tiles was investigated. The starting precursors were titanium (IV) tetraisopropoxide (Ti [OCH(CH3)2]4; TIP), ethanol, hydrochloric acid and distilled water. Unglazed ceramic tiles were sintered at 900°C and 1100°C. The nanotitania based sols were applied on the tile surface using air-brush and calcined at 500°C for 3 h. The particle size of the synthesized TiO2 varied in the range 8-20 nm. The photocatalysis of nanotitania was studied through the photodegradation of methylene blue solution under UVC irradiation using UV-Vis Spectrophotometer. The presence of nanotitania on unglazed ceramic tiles was confirmed by a scanning electron microscope equipped with energy dispersive X-ray spectrometer (EDS). Ceramic tiles sintered at 900°C gave higher % open porosity and hence higher amount of nanotitania embedded on the ceramic surface. The results showed that all unglazed ceramic tiles coated with nanotitania were able to show photodegradation of methylene blue.

Photocatalytic Degradation of Methylene Blue Solution by Fe-Doped Tio2 under Visible Light

2013 ◽  
Vol 807-809 ◽  
pp. 526-529
Author(s):  
Wei Xing Li ◽  
Jing Huan Ma ◽  
Ying Liu ◽  
Qing Tong Ren ◽  
Zhan Sheng Ma
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Degradation Rate ◽  
Raw Materials ◽  
Catalytic Performance ◽  
Impregnation Method ◽  
Methylene Blue Solution ◽  
Initial Concentration ◽  
Blue Solution

In this paper, Fe (NO3) 3 9H2O and TiO2 were selected as raw materials. Fe2O3/TiO2 photocatalyst was prepared by the impregnation method. The degradation performance of the photocatalyst for methylene blue solution was studied in detail under the tungsten light source environment. The results showed that Fe2O3/TiO2 had the good photocatalytic properties, and that methylene blue had a higher degradation rate at about 60min. In a certain range of loading, degradation gradually increased with the amount of doped iron. The catalytic performance was high at the basic condition. The degradation rate decreased with the higher initial concentration of methylene blue. The photocatalyst with good performance has been prepared.

Preparation and Properties of Photocalysts in ZnO/TiO2 System

2019 ◽  
Vol 800 ◽  
pp. 170-174
Author(s):  
Jānis Grabis ◽  
Anita Letlena ◽  
Inta Sīpola
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Phase Composition ◽  
Calcination Temperature ◽  
Sol Gel ◽  
Titanium Isopropoxide ◽  
Solar Light ◽  
Methylene Blue Solution ◽  
Titanium Butoxide ◽  
Blue Solution

ZnO/TiO2 nanocomposites with several ratio of the components were prepared by sol-gel method using titanium isopropoxide and titanium butoxide as titania precursors. Phase formation and photocatalytic activity of ZnO/TiO2 nanocomposites depend on ratio of the components and calcination temperature. The photocatalytic activity in dependence on calcination temperasture, phase composition was determined by degradation of methylene blue solution under Hg lamp and solar light imitating illumination. The highest photocatalytic activity showed ZnO/TiO2 nanocomposites containing 99 mol.% ZnO and 50 mol% ZnO when hexagonal ZnTiO3 phase was formed. ZnO/TiO2 nanocomposites exhibited enhanced photoactivity under solar light with respect to Hg lamp irradiation.

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