Biofabrication of Zinc Oxide Nanoparticles using the Isolated Flavonoid from Combretum ovalifolium and its Anti-oxidative Ability and Catalytic degradation of Methylene blue Dye

2020 ◽  
Vol 36 (04) ◽  
pp. 655-664
Author(s):  
G. Dayana Jeyaleela ◽  
J. Rosaline Vimala ◽  
S. Margrat Sheela ◽  
A. Agila ◽  
M. Stella Bharathy ◽  
...  
2019 ◽  
Vol 56 ◽  
pp. 1-16 ◽  
Author(s):  
Ahmed M. El-Khatib ◽  
N.S. Yousef ◽  
Z.F. Ghatass ◽  
Mohamed S. Badawi ◽  
M.M. Mohamed ◽  
...  

A promising rotating arc discharge method has been developed for producing high purity silver carbon nanotube and zinc oxide nanoparticles, to study their capacities for methylene blue (MB) dye removal under different conditions such as contact time, initial methylene blue dye ion concentration, solution pH, and adsorbent dose. The equilibrium isotherm data were analyzed using Langmuir, Freundlich, Temkin isotherms. Correlation coefficients indicated the following order to fit isotherms for silver carbon nanotube: Freundlich > Langmuir > Temkin. On the other hand, for zinc oxide nanoparticles, the following adjustment founded to fit isotherms was: Langmuir > Temkin> Freundlich. Furthermore, separation factors and distribution coefficients of Methylene blue (MB) dye were calculated. Adsorption kinetic data were analyzed using pseudo-first and second -orders and Elovich model. Film and intraparticle Diffusion model were used to investigate Adsorption mechanism. Kinetic studies showed that the adsorption of methylene blue onto silver carbon nanotubes followed Elovich kinetic model, and the rate of adsorption is controlled by the liquid film diffusion model. Adsorption of methylene blue on zinc oxide nanoparticles followed the pseudo-second-order kinetic model, and the rate of adsorption is controlled by the intraparticle diffusion model.


Optik ◽  
2019 ◽  
Vol 183 ◽  
pp. 691-697 ◽  
Author(s):  
Jin Feng Li ◽  
Esrat Jahan Rupa ◽  
Joon Hurh ◽  
Yue Huo ◽  
Ling Chen ◽  
...  

2020 ◽  
Vol 174 ◽  
pp. 376-388
Author(s):  
A.M. Omer ◽  
T.M. Tamer ◽  
W.M. Abou-Taleb ◽  
G.D. Roston ◽  
A.M. Hafez ◽  
...  

2021 ◽  
Vol 19 (8) ◽  
pp. 53-58
Author(s):  
Noor Al-Huda Baiee ◽  
Ayad F. Alkaim

The photo catalytic degradation of an aqueous solution of methylene blue dye has studied under different conditions of preparation Zinc oxide nanoparticles and study effect of various mass of zinc oxide on the removal of methylene blue dye and initial concentration of MB dye. Several techniques were used to determine the surface properties of the prepared nano-zinc oxide such as XRD, TEM. Results showed that, the phot catalytic degradation process was high at the beginning and then decreased with time. and the phot catalytic degradation efficiency, increased by increasing weight of zinc oxide nanoparticle from 0.05 g to 0.3 g. and decrease with increase weight of zinc oxide nanoparticle from 0.5 g to 0.7g. also showed that the best weight to removal MB dye 0.3 gm.


2010 ◽  
Vol 288 (16-17) ◽  
pp. 1633-1638 ◽  
Author(s):  
Sadia Ameen ◽  
M. Shaheer Akhtar ◽  
Young Soon Kim ◽  
O-Bong Yang ◽  
Hyung-Shik Shin

2021 ◽  
pp. 149830
Author(s):  
Fabiola Pantò ◽  
Zainab Dahrouch ◽  
Abhirup Saha ◽  
Salvatore Patanè ◽  
Saveria Santangelo ◽  
...  

2021 ◽  
pp. 103363
Author(s):  
Kehinde Shola Obayomi ◽  
Ayomide Elizabeth Oluwadiya ◽  
Sie Yon Lau ◽  
Adewumi Oluwasogo Dada ◽  
Divine Akubuo-Casmir ◽  
...  

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