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.

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 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.

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.

Synthesis of Visible-Light Responsive CdS/ZnO Nanocomposite Photocatalysts via Simple Precipitation Method

2014 ◽  
Vol 608 ◽  
pp. 224-229 ◽  
Author(s):  
Potjanaporn Chaengchawi ◽  
Karn Serivalsatit ◽  
Pornapa Sujaridworakun
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Precipitation Method ◽  
Cds Nanoparticles ◽  
Methylene Blue Solution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Blue Solution ◽  
Scanning Electron

A visible-light responsive CdS/ZnO nanocomposite photocatalyst was successfully synthesized by precipitation of CdS nanoparticles, using Cd (NO3)2 and Na2S as starting materials, on ZnO nanoparticles and then calcined at 400°C for 2 hours. The effects of the mole ratio of CdS and ZnO in the composites on their phase, morphology, and surface area were investigated by X-ray Diffraction (XRD), scanning electron microscope (SEM), Brunauer Emmett Teller method (BET), respectively. The photocatalytic degradation of methylene blue solution in the presence of composite products under visible-light irradiation was investigated. The results showed that the mole ratio of CdS and ZnO played a significant role on photocatalytic performance. The highest photocatalytic activity was obtained from the CdS/ZnO nanocomposite with mole ratio of 1:4, which is higher than that of pure CdS and pure ZnO.

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.

scholarly journals The generation of the singlet oxygen in methylene blue solution and its effect to the tissue

1987 ◽  
Vol 8 (3) ◽  
pp. 59-60
Author(s):  
Ichiro TANABE ◽  
Hiroshi FUJIMURA ◽  
Tatsuo OTANI ◽  
Yukinori OKAZAKI ◽  
Tadayoshi TAKEMOTO ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Singlet Oxygen ◽  
Methylene Blue Solution ◽  
Blue Solution

scholarly journals Synthesis and Photoactivity of Fe3O4/TiO2-Co as a Magnetically Separable Visible Light Responsive Photocatalyst

2018 ◽  
Vol 18 (3) ◽  
pp. 403 ◽  
Author(s):  
Eko Sri Kunarti ◽  
Indriana Kartini ◽  
Akhmad Syoufian ◽  
Karolina Martha Widyandari
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Dopant Concentration ◽  
Band Gap Energy ◽  
Methylene Blue Solution ◽  
Magnetic Photocatalyst ◽  
Blue Solution ◽  
Degradation Reaction ◽  
Visible Irradiation ◽  
Uv Visible

Synthesis of magnetic photocatalyst, Fe3O4/TiO2-Co, with characterization and photoactivity examination have been conducted. The synthesis was initiated by preparation of Fe3O4 particles using coprecipitation method. The Fe3O4 particles were then coated with TiO2-Co at a various ratio of Fe3O4:TiO2 and concentration of Co(II) dopant. The Fe3O4/TiO2-Co was characterized by FTIR, XRD, TEM, SEM-EDX, VSM, and SR UV-visible methods. Photoactivity of the Fe3O4/TiO2-Co was carried out using methylene blue as a target molecule in degradation reaction within a batch system. By using optimum conditions, the degradation of methylene blue solution was performed under exposure to UV, visible light and dark condition. Results showed that the Fe3O4/TiO2-Co formation was confirmed by the presence of Fe3O4 and anatase diffraction peaks in the X-ray diffractogram. SR UV-Vis spectra indicated that the Fe3O4/TiO2-Co was responsive to visible light. Band gap energy of the Fe3O4/TiO2-Co with dopant concentration of 1; 5; 10 and 15% were 3.22; 3.12; 3.09 and 2.81 eV, respectively. The methylene blue solution can be well photodegraded at a pH of 10 for 210 min. The Fe3O4/TiO2-Co has the highest ability to methylene blue photodegradation with dopant concentration of 10% gave degradation yield of 80.51 and 95.38% under UV and visible irradiation, respectively.

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