Potential continuous removal of toluene by ZnO nanorods grown on permeable alumina tube filters

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52360-52371 ◽  
Author(s):  
Faegheh Ghanbari ◽  
Mehdi Eskandari ◽  
Pariya Nazari ◽  
Saba Gharibzadeh ◽  
Saman Kohnehpoushi ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Atmospheric Pressure ◽  
Simple Technique ◽  
Zno Nanorods ◽  
Alumina Tube ◽  
Crystalline Surface

Vertical ZnO nanorods were successfully grown on the crystalline surface of an Al2O3 microfilter by the simple technique of evaporation of prepared solution at atmospheric pressure (ESAP) for photocatalytic degradation of toluene.

Effect of morphology in the photocatalytic degradation of methyl violet dye using ZnO nanorods

2016 ◽  
Vol 28 (5) ◽  
pp. 4025-4034 ◽  
Author(s):  
J. Prince Richard ◽  
I. Kartharinal Punithavathy ◽  
S. Johnson Jeyakumar ◽  
M. Jothibas ◽  
P. Praveen
Keyword(s):  
Photocatalytic Degradation ◽  
Zno Nanorods ◽  
Methyl Violet

scholarly journals Fabrication of ZnO Nanorods by Atmospheric-Pressure Solid-Source CVD Using Ethanol-Assisted Low-Temperature Vaporization

2012 ◽  
Vol 85 (12) ◽  
pp. 1287-1292 ◽  
Author(s):  
Sawako Miyamoto ◽  
Tetsuya Hasegawa ◽  
Hiroyuki Takahashi ◽  
Tetsu Yonezawa ◽  
Hajime Kiyono ◽  
...  
Keyword(s):  
Low Temperature ◽  
Atmospheric Pressure ◽  
Zno Nanorods

scholarly journals Factorial Design of Experiments for Optimization of Photocatalytic Degradation of Tartrazine by Zinc Oxide (ZnO) Nanorods with Different Aspect Ratios

2020 ◽  
Author(s):  
Andrew Skinner ◽  
Anthony DiBernardo ◽  
Arvid Masud ◽  
Nirupam Aich ◽  
Alexandre Pinto
Keyword(s):  
Zinc Oxide ◽  
Aspect Ratio ◽  
Photocatalytic Degradation ◽  
Factorial Design ◽  
Removal Efficiency ◽  
Rate Constant ◽  
Zno Nanorods ◽  
Order Rate Constant ◽  
Order Rate ◽  
Initial Ph

The photocatalytic degradation of the azo dye tartrazine using zinc oxide (ZnO) as photocatalyst under ultraviolet light was investigated using a 2<sup>4</sup> factorial design. The variables studied were the aspect ratio of ZnO nanorods, the ZnO load, the initial pH of tartrazine solution, and the H<sub>2</sub>O<sub>2</sub> volume. These variables were studied aiming to maximize the tartrazine removal efficiency and the pseudo-1<sup>st</sup>-order rate constant of the removal process. The ZnO aspect ratio was tuned by varying the Lewis base during the synthesis, hexamethylenetetramine (HMTA) was used to prepare ZnO with low aspect ratio (ZnO_LowAR), and NaOH was used to prepare ZnO with high aspect ratio (ZnO_HighAR). The microstructural characterizations indicated that ZnO_LowAR and ZnO_HighAR nanorods have similar structural, textural and optical properties. The only exception was the dimensions of the nanorods obtained, which could result in differences in the facets exposed on each type of nanorod surface. The factorial design revealed that ZnO aspect ratio, the initial pH of tartrazine solution, and the H<sub>2</sub>O<sub>2</sub> volume all have primary significant effects, whereas the ZnO load is not significant neither in the tartrazine removal efficiency nor in the pseudo-1<sup>st</sup>-order rate constant. Statistical models considering the coefficients of the significant interactions were obtained, leading to reasonable predicted results in comparison to the results experimentally obtained. The conditions leading to highest removal efficiency (~92%) and pseudo-1<sup>st</sup>-order rate constant (3.81 x 10<sup>-2</sup> min<sup>-1</sup>) were carried out with ZnO_HighAR, initial pH 7, and without H<sub>2</sub>O<sub>2</sub>, which outperformed the TiO<sub>2</sub> P-25 under the same conditions.

Photocatalytic degradation of methyl orange using ZnO nanorods

2011 ◽  
Vol 93 (4) ◽  
pp. 623-634 ◽  
Author(s):  
L.A. Ghule ◽  
A.A. Patil ◽  
K.B. Sapnar ◽  
S.D. Dhole ◽  
K.M. Garadkar
Keyword(s):  
Methyl Orange ◽  
Photocatalytic Degradation ◽  
Zno Nanorods ◽  
Degradation Of Methyl Orange
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