Enhanced simultaneous removal of malachite green and safranin O by ZnO nanorod-loaded activated carbon: modeling, optimization and adsorption isotherms

2015 ◽  
Vol 39 (10) ◽  
pp. 7998-8005 ◽  
Author(s):  
F. Nasiri Azad ◽  
M. Ghaedi ◽  
K. Dashtian ◽  
S. Hajati ◽  
A. Goudarzi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Malachite Green ◽  
Zno Nanorods ◽  
Simultaneous Removal ◽  
Zno Nanorod ◽  
High Uptake ◽  
Uptake Capacity ◽  
Carbon Modeling ◽  
Safranin O ◽  
Rapid Adsorption

Highly improved, safe, green and rapid adsorption by loading trace amounts of ZnO nanorods on AC with high uptake capacity.

Synthesis of regenerable Zn(OH)2nanoparticle-loaded activated carbon for the ultrasound-assisted removal of malachite green: optimization, isotherm and kinetics

RSC Advances ◽  
2015 ◽  
Vol 5 (96) ◽  
pp. 79119-79128 ◽  
Author(s):  
A. A. Bazrafshan ◽  
S. Hajati ◽  
M. Ghaedi
Keyword(s):  
Activated Carbon ◽  
Malachite Green ◽  
High Uptake ◽  
Uptake Capacity ◽  
Ultrasound Assisted ◽  
Rapid Adsorption

Highly regenerable, safe, green and rapid adsorption by loading trace amounts of Zn(OH)2nanoparticles on AC with high uptake capacity.

Polyoxometalates-based heterometallic organic–inorganic hybrid materials for rapid adsorption and selective separation of methylene blue from aqueous solutions

2015 ◽  
Vol 51 (16) ◽  
pp. 3336-3339 ◽  
Author(s):  
Fei-Yan Yi ◽  
Wei Zhu ◽  
Song Dang ◽  
Jian-Ping Li ◽  
Dai Wu ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Hybrid Materials ◽  
Selective Separation ◽  
Adsorption Rate ◽  
Cationic Dye ◽  
High Uptake ◽  
Uptake Capacity ◽  
Inorganic Hybrid ◽  
Rapid Adsorption

A series of POMs-based hybrid materials exhibit rapid adsorption rate, high uptake capacity and excellent selective separation towards cationic dye.

Simultaneous ultrasonic-assisted removal of malachite green and safranin O by copper nanowires loaded on activated carbon: central composite design optimization

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 57021-57029 ◽  
Author(s):  
Mostafa Roosta ◽  
Mehrorang Ghaedi ◽  
Arash Asfaram
Keyword(s):  
Activated Carbon ◽  
Aqueous Solutions ◽  
Central Composite Design ◽  
Design Optimization ◽  
Malachite Green ◽  
Copper Nanowires ◽  
Ultrasonic Assisted ◽  
Ultrasound Assisted ◽  
Safranin O ◽  
Central Composite

The present study investigates the simultaneous ultrasound-assisted adsorption of malachite green (MG) and safranin O (SO) dyes from aqueous solutions by ultrasound-assisted adsorption onto copper nanowires loaded on activated carbon (Cu-NWs-AC).

Photo-catalytic Study of Malachite Green Dye Degradation Using Rice Straw Extracted Activated Carbon Supported ZnO Nano-particles

2020 ◽  
Vol 10 (6) ◽  
pp. 849-859
Author(s):  
Radwa A. El-Salamony ◽  
Abeer A. Emam ◽  
Nagwa A. Badawy ◽  
Sara F. El-Morsi
Keyword(s):  
Activated Carbon ◽  
Visible Light ◽  
Rice Straw ◽  
Malachite Green ◽  
Dye Degradation ◽  
Nano Particles ◽  
Oh Radicals ◽  
Impregnation Method ◽  
Photo Degradation ◽  
Malachite Green Dye

Objective: ZnO nanoparticles were synthesized using wet impregnation method, and activated carbon from rice straw (RS) prepared through chemical route. Methods: The nano-composites ZnO-AC series were prepared with different ZnO:AC ratio of 10, 20, 50, and 70% to optimize the zinc oxide nanoparticles used. The obtained composites were characterized by FE-SEM, XRD, SBET, and optical techniques then used for the photo-degradation of Malachite green dye (MG) under visible light. Results: It was found that 10ZnO-AC exhibited excellent visible light photo-catalytic performance. The ·OH radicals’ formation is matching with photo-activity of the prepared composites. The photo-degradation efficiency of MG increased from 63% to 93%, when the 10ZnO-AC photocatalyst amount was increased from 0.5 to 6 g/L. Conclusion: The GC-MS technique was used to analyze the intermediates formed; up to 15 kinds of chemicals were identified as the degradation products.

Facile Synthesis of a Porous ZnO Nanorod Array with Enhanced Photocatalysis for Photoelectrochemical Water Splitting Application

2020 ◽  
Vol 20 (6) ◽  
pp. 3512-3518
Author(s):  
Saleh Khan ◽  
Xiao-He Liu ◽  
Xi Jiang ◽  
Qing-Yun Chen
Keyword(s):  
Annealing Temperature ◽  
Zno Nanorods ◽  
Nanorod Array ◽  
Photocurrent Density ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Irradiation Intensity ◽  
Heat Treated ◽  
Positive Effect

Highly efficient and effective porous ZnO nanorod arrays were fabricated by annealing ZnO nanorod arrays grown on a substrate using a simple hydrothermal method. The annealing had a positive effect on the nanorod morphology, structure and optical properties. The porosity was closely related to the annealing temperature. After heating at 450 °C, pores appeared on the nanorods. It was demonstrated that the porosity could be exploited to improve the visible light absorption of ZnO and reduce the bandgap from 3.11 eV to 2.99 eV. A combination of improved charge separation and transport of the heat-treated ZnO thus led to an increase in the photoelectrochemical properties. At an irradiation intensity of 100 mW/cm−2, the photocurrent density of the porous nanorod array was approximately 1.3 mA cm−2 at 1.2 V versus Ag/AgCl, which was five times higher than that of the ZnO nanorods. These results revealed the synthesis of promising porous ZnO nanorods for photoelectrochemical applications.

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