Enhanced degradation of azo dye in wastewater by pulsed discharge plasma coupled with MWCNTs-TiO2/γ-Al2O3 composite photocatalyst

2016 ◽  
Vol 172 ◽  
pp. 186-192 ◽  
Author(s):  
Xin Li ◽  
Tiecheng Wang ◽  
Guangzhou Qu ◽  
Dongli Liang ◽  
Shibin Hu
Keyword(s):  
Azo Dye ◽  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Composite Photocatalyst ◽  
Al2o3 Composite ◽  
Enhanced Degradation ◽  
Degradation Of Azo Dye ◽  
Pulsed Discharge Plasma

scholarly journals Enhanced removal of acid orange II from aqueous solution by V and N co-doping TiO2-MWCNTs/γ-Al2O3 composite photocatalyst induced by pulsed discharge plasma

2020 ◽  
Author(s):  
Guangzhou Qu ◽  
Hui Wang ◽  
Xin Li ◽  
Tiecheng Wang ◽  
Zengqiang Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Discharge Plasma ◽  
Orange Ii ◽  
Pulsed Discharge ◽  
Composite Photocatalyst ◽  
Co Doping ◽  
Al2o3 Composite ◽  
Acid Orange Ii ◽  
Pulsed Discharge Plasma

Abstract This paper presents a study of V and N co-doping TiO2 embedding multi-walled carbon nanotubes (MWCNTs) supported on γ-Al2O3 pellet (V/N-TiO2-MWCNTs/γ-Al2O3) composite photocatalyst induced by pulsed discharge plasma to enhance the removal of Acid orange II (AO7) from aqueous solution. The photocatalytic activity of the V/N-TiO2-MWCNTs/γ-Al2O3 composite to AO7 removal induced by the pulsed discharge plasma was evaluated. The results indicate that the V/N-TiO2-MWCNTs/γ-Al2O3 composite possesses enhanced photocatalytic activity that facilitates the removal of AO7 compared with the TiO2-MWCNTs/γ-Al2O3 and TiO2/γ-Al2O3 composites. Almost 100% of AO7 is removed after 10 min under optimal conditions. The V0.10/N0.05-TiO2-MWCNTs/γ-Al2O3 photocatalyst exhibits the best removal effect for AO7. Analysis of the removal mechanism indicates that the enhancement of the removal of AO7 resulting from V and N co-doping causes TiO2 lattice distortion and introduces a new impurity energy level, which not only reduces the band gap of TiO2 but also inhibits the recombination of the pairs.

Study on Electron Density Dependence of Metastable Ar+Density in Pulsed-Discharge Plasma by Using LIF Method

1987 ◽  
Vol 26 (Part 1, No. 1) ◽  
pp. 184-185
Author(s):  
Yukio Watanabe ◽  
Masaharu Shiratani ◽  
Sukeomi Ogi ◽  
Naoki Kunihiro
Keyword(s):  
Density Dependence ◽  
Electron Density ◽  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

Decomposition of Toluene Using Nanosecond- Pulsed-Discharge Plasma Assisted With Catalysts

2015 ◽  
Vol 43 (10) ◽  
pp. 3461-3469 ◽  
Author(s):  
Akihiko Ogasawara ◽  
Junkai Han ◽  
Kengo Fukunaga ◽  
Jinlong Wang ◽  
Douyan Wang ◽  
...  
Keyword(s):  
Discharge Plasma ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

Repetitively pulsed discharge plasma-controlled copper-vapor laser kinetics

2000 ◽  
Author(s):  
Anatoly N. Soldatov ◽  
Andrey V. Lugovskoy ◽  
Yu. P. Polunin ◽  
A. A. Fofanov ◽  
L. N. Chausova
Keyword(s):  
Discharge Plasma ◽  
Copper Vapor Laser ◽  
Pulsed Discharge ◽  
Vapor Laser ◽  
Copper Vapor ◽  
Pulsed Discharge Plasma

Synthesis of silver nanoparticles by atmospheric-pressure pulsed discharge plasma in a slug flow system

2018 ◽  
Vol 58 (1) ◽  
pp. 016001 ◽  
Author(s):  
Motoki Yamada ◽  
Shigenori Takahashi ◽  
Wahyudiono ◽  
Noriharu Takada ◽  
Hideki Kanda ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Atmospheric Pressure ◽  
Slug Flow ◽  
Discharge Plasma ◽  
Flow System ◽  
Pulsed Discharge ◽  
Pulsed Discharge Plasma

scholarly journals Plasma-catalyzed liquefaction of wood-based biomass

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6095-6109
Author(s):  
Xiaohang Sun ◽  
Zijun Sun ◽  
Yanbin Xin ◽  
Bing Sun ◽  
Xiaomin Lu
Keyword(s):  
Discharge Plasma ◽  
Volume Fraction ◽  
Solvent Ratio ◽  
Pulsed Discharge ◽  
Reaction Parameters ◽  
Plasma Technology ◽  
Biomass Waste ◽  
Forestry Production ◽  
Solid Biomass ◽  
Pulsed Discharge Plasma

Biomass resources in nature produce a large amount of waste resources (agricultural residues, wood waste, etc.) during agricultural and forestry production processes. Therefore, the effective utilization of these solid biomass waste resources has attracted widespread interest. In this paper, a pulsed discharge plasma technology was used to perform catalytic liquefaction experiments on solid biomass sawdust at room temperature and atmospheric pressure, and the reaction parameters such as the solid:liquid ratio, liquefaction solvent ratio, and catalyst ratio were optimized. The results showed that the plasma technology achieved a higher liquefaction yield; the optimized reaction parameters were: a solid:liquid ratio of 1:23.4, a liquefaction solvent polyethylene glycol (PEG) / glycerol (GL) ratio of 25:15 (V:V), and an acid volume fraction of 0.188%. In addition, the characteristics of the products of the liquefaction reaction were analyzed and discussed. The liquid products were mainly composed of small molecules. The experiment established that the liquefaction of solid sawdust by high-voltage pulsed discharge plasma can be an effective technical method.

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