Study of the catalytic activity of multilayer graphene (MLG), molybdenum oxide (MoO2), and manganese ferrite (MnFe2O4) on the melanoidin removal by ozonation process

2021 ◽  
Author(s):  
Marcos Vinícius Mateus ◽  
Mário Sérgio da Luz ◽  
Rogério Valentim Gelamo ◽  
Diego Andrade Lemos ◽  
Cristiano Poleto ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Molybdenum Oxide ◽  
Multilayer Graphene ◽  
Manganese Ferrite ◽  
Ozonation Process

Degradation of p-Chloronitrobenzene in Aqueous Solution by Iron Silicate Catalytic Ozonation

2014 ◽  
Vol 955-959 ◽  
pp. 2162-2168 ◽  
Author(s):  
Yue Liu ◽  
Lei Liu ◽  
Wei Jin Gong
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Catalytic Ozonation ◽  
Iron Silicate ◽  
Radical Scavenger ◽  
Efficient Catalyst ◽  
Green Catalyst ◽  
Hydroxyl Radical Scavenger ◽  
Radical Type ◽  
Ozonation Process

Iron silicate, a stable and efficient catalyst prepared in the laboratory has been successfully used as a catalyst combined with ozonation in the degradation of p-Chloronitrobenzene (pCNB). The catalytic ozonation removal effectiveness of pCNB was investigated under various physicochemical conditions. Both the adsorption and the single ozonation were not effective for the degradation of pCNB, but the presence of iron silicate in ozonation process could substantially enhance the pCNB removal efficiency. The hydroxyl radical scavenger experiment confirmed that iron silicate catalytic ozonation followed a radical-type mechanism. The increasing of both the iron silicate dosage and the ozone dosage could enhance the removal effectiveness of pCNB. The iron silicate catalyst could be recycled easily without decreasing any ozone catalytic activity after four successive reuses. It is concluded that the iron silicate was an efficient green catalyst for pCNB degradation in drinking water.

Fe3O4@TiO2preparation and catalytic activity in heterogeneous photocatalytic and ozonation processes

2015 ◽  
Vol 5 (2) ◽  
pp. 1143-1152 ◽  
Author(s):  
L. Ciccotti ◽  
L. A. S. do Vale ◽  
T. L. R. Hewer ◽  
R. S. Freire
Keyword(s):  
Catalytic Activity ◽  
Magnetic Nanoparticle ◽  
Catalytic Ozonation ◽  
Systematic Evaluation ◽  
Hybrid Catalyst ◽  
Heterogeneous Catalytic ◽  
Nanoparticle Preparation ◽  
Ozonation Process

Systematic evaluation of experimental variables in magnetic nanoparticle preparation and hybrid catalyst application in the heterogeneous catalytic ozonation process.

Layer-by-layer synthesis of bilayer and multilayer graphene on Cu foil utilizing the catalytic activity of cobalt nano-powders

Carbon ◽  
2019 ◽  
Vol 146 ◽  
pp. 549-556
Author(s):  
Hao Ying ◽  
Weiwei Wang ◽  
Wenyu Liu ◽  
Le Wang ◽  
Shanshan Chen
Keyword(s):  
Catalytic Activity ◽  
Multilayer Graphene ◽  
Layer By Layer ◽  
Cu Foil

scholarly journals Synthesis of h- andα-MoO3by Refluxing and Calcination Combination: Phase and Morphology Transformation, Photocatalysis, and Photosensitization

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Pannipa Wongkrua ◽  
Titipun Thongtem ◽  
Somchai Thongtem
Keyword(s):  
Methylene Blue ◽  
Catalytic Activity ◽  
Molybdenum Oxide ◽  
Experimental Results ◽  
Blue Dye ◽  
Xenon Lamp ◽  
Methylene Blue Dye

Hexagonal molybdenum oxide (h-MoO3) nano- and microrods were successfully synthesized by refluxing of (NH4)6Mo7O24·4H2O solutions with the pH 1 at 90°C for 1, 3, 5, and 7 h and were further transformed into orthorhombic molybdenum oxide (α-MoO3) microplates by calcination at 450°C for 6 h. These selected products were used to determine the degradation of methylene blue dye under 35 W xenon lamp for 0–180 min, due to the photocatalysis and photosensitization processes. In this research, catalytic activity of the metastable h-MoO3has higher efficiency than that of the thermodynamically stableα-MoO3. Their phase and morphology transformation was also explained according to the experimental results.

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