scholarly journals Synthesis and photocatalytic properties of three dimensional laminated structure anatase TiO2/nano-Fe0 with exposed (001) facets

RSC Advances ◽  
2020 ◽  
Vol 10 (20) ◽  
pp. 11823-11830
Author(s):  
Yeshuo Dong ◽  
Fanjun Meng
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Anatase Tio2 ◽  
Photocatalytic Properties ◽  
Laminated Structure

Three dimensional laminated structure anatase TiO2/nano-Fe0 with exposed (001) facets were successfully synthesized, which exhibited higher photocatalytic performance in the photocatalytic degradation of methylene blue.

scholarly journals Fluorinated and Platinized Titania as Effective Materials in the Photocatalytic Treatment of Dyestuffs and Stained Wastewater Coming from Handicrafts Factories

Catalysts ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 179 ◽  
Author(s):  
Julie Murcia ◽  
Ángela Cely ◽  
Hugo Rojas ◽  
María Hidalgo ◽  
José Navío
Keyword(s):  
Methylene Blue ◽  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Photocatalytic Performance ◽  
Natural Fibers ◽  
Textural Properties ◽  
Photocatalytic Properties ◽  
Real Wastewater ◽  
Commercial Tio2

In this study, commercial and lab-prepared TiO2 were modified by fluorination and platinum photodeposition; and the effect of these modifications over the physicochemical and photocatalytic properties of TiO2 was evaluated. It was found that F and Pt addition leads to the modification of the optical and textural properties of TiO2. The materials prepared were tested in the photocatalytic degradation of different organic dyestuffs such as methylene blue (MB) and methyl orange (MO); the degradation of commercial anilines employed in the staining of natural fibers was also evaluated. Photocatalysis was also studied in this work as an eco-friendly treatment of wastewater coming from handicrafts factories. In general it was observed that the effectiveness of the photocatalytic treatment strongly depends on the substrate to be degraded, thus, fluorinated and platinized commercial Titania (Pt-F-P25) showed the best photocatalytic performance in the MB and MO photodegradation and in contrast, in the case of the anilines the highest degradation was obtained over commercial TiO2 fluorinated (F-P25). These results can be explained by differences observed in the structure and in the adsorption of these dyestuffs over the photocatalysts surfaces. F-P25 photocatalyst also demonstrated to be the best material for the treatment of real wastewater coming from handicrafts factories.

scholarly journals Bleached Wood Supports for Floatable, Recyclable, and Efficient Three Dimensional Photocatalyst

Catalysts ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 115 ◽  
Author(s):  
Yuming He ◽  
Huayang Li ◽  
Xuelian Guo ◽  
Rongbo Zheng
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Three Dimensional ◽  
Carbon Support ◽  
Support Materials ◽  
Lignin Removal ◽  
Photodegradation Efficiency ◽  
Uv Transmittance ◽  
Nanoparticles Suspension ◽  
Black Color

To suppress the agglomeration of a photocatalyst, facilitate its recovery, and avoid photolysis of dyes, various support materials such as ceramic, carbon, and polymer have been investigated. However, these support materials pose the following additional challenges: ceramic supports will settle down at the bottom of their container due to their high density, while the carbon support will absorb the UV-vis light for its black color. Herein, we propose a floatable, UV transmitting, mesoporous bleached wood with most lignin removal to support P25 nanoparticles (BP-wood) that can effectively, recyclable, three dimensional (3D) photocatalytic degrade dyes such as methylene blue (MB) under ambient sunlight. The BP-wood has the following advantages: (1) The delignification makes the BP-wood more porous to not only quickly transport MB solutions upstream to the top surface, but is also decorated with P25 nanoparticles on the cell wall to form a 3D photocatalyst. (2) The delignification endows the BP-wood with good UV transmittance to undergo 3D photocatalytic degradation under sunlight. (3) It can float on the surface of the MB solution to capture more sunlight to enhance the photodegradation efficiency by suppressing the photolysis of MB. (4) It has comparable or even better photocatalytic degradation of 40 mg/L and 60 mg/L MB than that of P25 nanoparticles suspension. (5) It is green, recyclable, and scalable.

Design and Synthesis of Metal Oxides Doped Three-Dimensional Order Macroporous Materials Based on SiO2 Matrixes and their Photocatalytic Property

2013 ◽  
Vol 807-809 ◽  
pp. 553-556
Author(s):  
Wei Qiang Fan ◽  
Hong Ye Bai ◽  
Wei Dong Shi
Keyword(s):  
Methylene Blue ◽  
Methyl Methacrylate ◽  
Metal Oxides ◽  
Porous Structure ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Photocatalytic Property ◽  
Design And Synthesis ◽  
Structure And Morphology ◽  
Macroporous Materials

Three-dimensional (3D) ordered SiO2 macroporous materials doped with metal oxides (M = Co, Fe, Ni, and Sn) were synthesized respectively, using poly (methyl methacrylate) (PMMA) spheres as templates. The porous structure and morphology of samples has been characterized by TEM images. Further investigation of the photocatalytic degradation of methylene blue in the presence of H2O2, the observed photocatalytic performance of the samples was attributed to the effects of the metal oxides and porosity.

A core–shell TiO2@C nano-architecture: facile synthesis, enhanced visible photocatalytic performance and electrochemical capacitance

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 62424-62432 ◽  
Author(s):  
Linrui Hou ◽  
Hui Hua ◽  
Hui Cao ◽  
Siqi Zhu ◽  
Changzhou Yuan
Keyword(s):  
Methylene Blue ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Core Shell ◽  
Facile Synthesis ◽  
Electrochemical Capacitance ◽  
Electrochemical Behaviors

A mesoporous core–shell TiO2@C nanohybrid exhibited remarkable photocatalytic degradation efficiency and stability for methylene blue under visible light irradiation, and attractive electrochemical behaviors for electrochemical capacitors.

Facile synthesis of three-dimensional Mn3O4hierarchical microstructures and their application in the degradation of methylene blue

2015 ◽  
Vol 3 (6) ◽  
pp. 2934-2941 ◽  
Author(s):  
Yuli Wang ◽  
Ling Zhu ◽  
Xing Yang ◽  
Erlei Shao ◽  
Xiaoyong Deng ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Performance ◽  
Three Dimensional ◽  
Hierarchical Structures ◽  
Facile Synthesis

3D hierarchical structures composed of Mn3O4nanosheets are synthesized and show high photocatalytic performance.

Relationship between Planes of Cu2O Microcrystal and Photo-Catalytic Degradation of Methylene Blue

2013 ◽  
Vol 807-809 ◽  
pp. 562-566
Author(s):  
Wei Dong Shi ◽  
Dan Yan ◽  
Wei Qiang Fan
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Diffuse Reflectance ◽  
Photocatalytic Performance ◽  
Xenon Lamp ◽  
X Ray Diffraction ◽  
Co Catalyst ◽  
X Ray ◽  
Main Influence ◽  
Better Than

Four kinds of Cu2O microcrystals with different morphologies are synthesized via low temperature hydrothermal synthetic method. The photocatalytic degradation of methylene blue (MB) of the above different Cu2O is preliminary explored based on this observation. 6-facet, 8-facet, 14-facet are prepared by PVP system and 26-facet is prepared by NaOH system. They are characterized by means of Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD) and Diffuse Reflectance Spectra (DRS). Under 150 W xenon lamp irradiation, 0.5 gL1 catalyst and 0.1% (v/v) 30% H2O2 as co-catalyst are used to degrade 5% 100 mL MB solution. The reaction time is 80 min. 26-facet Cu2O polyhedral discolor about 89.48% of MB while 6-facet Cu2O microcrystal about discolor about 20.18% which is the lowest decolourization rate among all the samples. The photocatalytic performance of 8-facet Cu2O microcrystal is slight better than that of 14-facet. The decolourization rate of 8-facet and 14-facet are 56.00% and 41.08%, respectively. The main reason is that the planes of Cu2O microcrystal have a main influence on photocatalytic degradation of MB.

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