Preparation of TiO2 Photocatalyst Loaded Bentonite Material and Study of Catalytic Degradation

2014 ◽  
Vol 809-810 ◽  
pp. 860-866 ◽  
Author(s):  
Ce Wang ◽  
Long Gui Peng ◽  
Qiao Qiao Zhang ◽  
Lu Ying Qiu ◽  
Zai Yong Zhang
Keyword(s):  
Reaction Time ◽  
Methyl Orange ◽  
Process Parameters ◽  
Sol Gel ◽  
Degradation Process ◽  
Single Factor ◽  
Illumination Time ◽  
Prepared Material ◽  
The Relationship ◽  
Degradation Of Methyl Orange

A intercalated TiO2photocatalyst loaded bentonite was prepared by sol-gel method. The effect of reaction time, reaction temperature,the amount of butyl titanate and other process parameters on prepared material of degradation of methyl orange,as well as the relationship between the concentration of methyl orange on degradation process and illumination time were discussed by single factor method.The results showed : the first absorbance of the intercalated TiO2photocatalyst loaded bentonite material was 0.342 and the average absorbance was respectively 0.7402 through 5 washing after the intercalated TiO2photocatalyst loaded bentonite irradiated at UV-irradiation 1.5h to 20mg/L methyl orange.

Electro-Assisted Photocatalytic Degradation of Methyl Orange on TiO2 Film Using NaCl as Electrolyte

2012 ◽  
Vol 457-458 ◽  
pp. 1169-1172
Author(s):  
Wen Jie Zhang ◽  
Mei Ling Hu ◽  
Hong Bo He
Keyword(s):  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Tio2 Film ◽  
Sol Gel ◽  
Porous Electrode ◽  
Degradation Process ◽  
Film Electrode ◽  
Degradation Rates ◽  
Smooth Film ◽  
Degradation Of Methyl Orange

Porous and smooth TiO2 film electrodes prepared by sol-gel method were used on methyl orange degradation by an electro-assisted photocatalytic degradation process. When using the applied potential along, there was no obvious degradation of methyl orange whether using TiO2 film electrode prepared using PEG template or not. The largest difference between the two electrodes appears at potential of 0.7 V in 0.05 mol/l NaCl solution, and the porous electrode shows better degradation activity in electro-assisted photocatalytic degradation. When NaCl concentration was 0.07 mol/l, degradation rates on porous and smooth film electrodes were 51.16% and 32.35 %, respectively. After 100 min of irradiation, 90% of the methyl orange degraded on the porous TiO2 film electrode, and 79.87% of the methyl orange degraded on the smooth TiO2 film electrode.

Electro-Assisted Photocatalytic Degradation of Methyl Orange on TiO2 Film Using NH4Cl as Electrolyte

2012 ◽  
Vol 487 ◽  
pp. 640-643
Author(s):  
Wen Jie Zhang ◽  
Fei Fei Bi ◽  
Hong Bo He
Keyword(s):  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Sol Gel ◽  
Degradation Process ◽  
Porous Film ◽  
Film Electrode ◽  
Noticeable Effect ◽  
Methyl Orange Degradation ◽  
Smooth Film ◽  
Degradation Of Methyl Orange

Porous and smooth TiO2 film electrodes prepared by sol-gel method were used on methyl orange degradation by an electro-assisted photocatalytic degradation process. The results indicates that methyl orange was barely degraded under the potential alone, availing that potential under 1.8 V had no noticeable effect on removal of the dye. The porous film electrode showed better electro-assisted photocatalytic activity than the smooth film electrode when the potential was above 0.6 V. The porous film showed better activity than the smooth film in nearly all the concentration range except for the highest one. The porous film exhibited better activity than the smooth one.

Preparation and Photocatalytic Activity of Cu/BiVO4 by Solid State Grinding Method for Degradation of Methyl Orange

2016 ◽  
Vol 703 ◽  
pp. 321-325
Author(s):  
Hai Feng Chen ◽  
Jia Mei Chen ◽  
Zhi Xue Pan
Keyword(s):  
Methyl Orange ◽  
Solid State ◽  
Visible Light ◽  
Raw Materials ◽  
X Ray Diffraction ◽  
Visible Absorption ◽  
Illumination Time ◽  
Grinding Method ◽  
Ft Ir ◽  
Degradation Of Methyl Orange

In this work, novel Cu/BiVO4 photocatalyst were prepared by a low-temperature solid state grinding method using Bi (NO3)3•5H2O, NH4VO3 and Cu (NO3)2•2H2O as raw materials. The structure and properties of the samples were characterized by Infrared Spectroscopy (FT-IR), X-ray diffraction (XRD) and UV-vis diffused reflectance spectroscopy (DRS); Using the degradation of methyl orange (MO) as the probe, it was simulated as the degradation of sewage under the visible light to study the influence of the illumination time and the amount of photocatalysts. Compared with the pure BiVO4, the visible-light absorption scope of BiVO4 was broadened by doping Cu, the UV-Visible absorption edges were slightly red shift and the band gap was narrower. Comparatively speaking, the results indicted that the doped Cu enhanced the photocatalytic activities of BiVO4.

Prediction model for the mechanical properties of compacted poplar powder generated via hot-pressing

BioResources ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 4947-4962
Author(s):  
Jin Yan ◽  
Jianan Liu ◽  
Liqiang Zhang ◽  
Zhili Tan ◽  
Haoran Zhang ◽  
...  
Keyword(s):  
Neural Network ◽  
Mechanical Properties ◽  
Network Model ◽  
Process Parameters ◽  
Neural Network Model ◽  
Hot Pressing ◽  
Process Conditions ◽  
Wood Powder ◽  
Single Factor ◽  
The Relationship

The influence of the process parameters on the mechanical properties of compact wood powder generated via hot-pressing was analyzed through a single-factor experiment. The mechanical properties exhibited a nonlinear trend relative to the process conditions of hot-pressed compact wood powder. The relationship models between the process parameters and the mechanical properties for the compact wood powder were established by applying a multiple regression analysis and neural network methods combined with data from an orthogonal array design. A comparison between experimental and predicted results was made to investigate the accuracy of the established models by applying several data groups among the single-factor experiments. The results showed that the accuracy of the neural network model in terms of predicting the mechanical properties was greater compared with the multiple regression model. This demonstrates that the established neural network model had a better prediction performance, and it can accurately map the relationship between the process conditions and the mechanical properties of the compact wood powder.

scholarly journals Preparation of TiO2 nanorods by Sol–Gel template method and measured its photo- catalytic activity for degradation of methyl orange

2019 ◽  
Vol 13 (26) ◽  
pp. 171-177
Author(s):  
Ban M. Al-Shabander
Keyword(s):  
Methyl Orange ◽  
Sol Gel ◽  
Tio2 Nanorods ◽  
X Ray Diffraction ◽  
X Ray ◽  
Force Microscopy ◽  
Photo Catalytic Activity ◽  
Atomic Force ◽  
Degradation Of Methyl Orange ◽  
Titanium Dioxide Nanorods

Titanium dioxide nanorods have been prepared by sol-gel templatemethod. The structural and surface morphology of the TiO2 nanorods wasinvestigated by X-ray diffraction (XRD) and atomic force microscopy(AFM), it was found that the nanorods produced were anatase TiO2 phase.The photocatalytic activity of the TiO2 nanorods was evaluated by thephoto degradation of methyl orange (MO). The relatively higherdegradation efficiency for MO (D%=78.2) was obtained after 6h of exposedto UV irradiation.

Substituted Co–Cu–Zn nanoferrites: synthesis, fundamental and redox catalytic properties for the degradation of methyl orange

RSC Advances ◽  
2016 ◽  
Vol 6 (2) ◽  
pp. 1360-1375 ◽  
Author(s):  
Santosh Bhukal ◽  
Manisha Dhiman ◽  
S. Bansal ◽  
Mukesh K. Tripathi ◽  
Sonal Singhal
Keyword(s):  
Methyl Orange ◽  
Catalytic Properties ◽  
Sol Gel ◽  
Combustion Method ◽  
Auto Combustion ◽  
Recyclable Catalysts ◽  
Degradation Of Methyl Orange

Co0.6Zn0.4Cu0.2MxFe1.8−xO4 (M = Zn2+, Co2+, Ni2+ and Mn3+. x = 0.2, 0.4, 0.6 and 0.8) magnetically recyclable catalysts have been synthesized via a sol–gel auto combustion method.

Photoelectrocatalytic Properties of Porous TiO2 Films Prepared Using ODA as Template

2012 ◽  
Vol 457-458 ◽  
pp. 521-524 ◽  
Author(s):  
Wen Jie Zhang ◽  
Qian Li ◽  
Hong Bo He
Keyword(s):  
Reaction Time ◽  
Methyl Orange ◽  
Degradation Rate ◽  
Synergetic Effect ◽  
Degradation Process ◽  
Absorption Peak ◽  
Photocatalytic Process ◽  
Applied Potential ◽  
Peak Intensity ◽  
Photoelectrocatalytic Degradation

The functions of applied potential to the photoelectrocatalytic degradation process of methyl orange were investigated. When using 0.05 M NaCl and under different applied potentials, the degradation rate increased obviously with increasing applied potential. When the applied potential was between 0.6 V-1.0 V, the degradation rate was enhanced drastically. The detected current values got larger as the applied potential increased from 0 up to 1.2 V. There was no direct electro-degradation to the dye in the solution. The applied potential and the irradiated light had synergetic effect when they were applied to the solution at the same time. While after irradiation for 0 to 60 min, with the increasing reaction time, methyl orange absorption peak intensity shrank obviously. The azo and benzene groups in methyl orange degraded totally under photocatalytic process.

scholarly journals Preparation, characterization and photocatalytic performance of heterostructured CuO–ZnO-loaded composite nanofiber membranes

2020 ◽  
Vol 11 ◽  
pp. 631-650 ◽  
Author(s):  
Wei Fang ◽  
Liang Yu ◽  
Lan Xu
Keyword(s):  
Methyl Orange ◽  
Process Parameters ◽  
Composite Nanofibers ◽  
Photocatalytic Performance ◽  
Structure And Properties ◽  
Optimal Process ◽  
Semiconductor Oxides ◽  
Synthesis Parameters ◽  
Nanofiber Membranes ◽  
Degradation Of Methyl Orange

Inorganic semiconductor oxides loaded on composite nanofibers (CNFs) have been widely applied in environmental monitoring, industry, aviation, and transportation. In this paper, heterostructured CuO–ZnO-loaded CNF membranes (CNFMs) were prepared successfully by a combination of electrospinning, heat treatment, and hydrothermal synthesis. The influence of the synthesis parameters on morphology, structure, and properties of the CNFMs was investigated, and the optimal process parameters were determined. Then, the CNFMs obtained with optimal process parameters were applied for the photocatalytic degradation of methyl orange. It was found that the CNFMs could be reused to degrade methyl orange at least three times, and the degradation rate remained above 90%.

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.

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