Synthesis of Co/CNTs via Strong Electrostatic Adsorption: Effect of Metal Loading

2014 ◽  
Vol 1043 ◽  
pp. 101-104 ◽  
Author(s):  
Omid Akbarzadeh ◽  
Noor Asmawati Mohd Zabidi ◽  
Bawadi Abdullah ◽  
Duvvuri Subbarao
Keyword(s):  
Adsorption Effect ◽  
Electrostatic Adsorption ◽  
Metal Loading ◽  
Strong Electrostatic Adsorption ◽  
Cobalt Loading

Cobalt particles were deposited on treated CNTs via the Strong Electrostatic Adsorption (SEA) method. Cobalt loading on CNTs support was varied from 5 to 20 wt%. Samples were characterized by N2 adsorption and HRTEM. The results of TEM indicated that increasing the metal loading from 5% to 20% resulted in larger nanoparticles and also led to agglomeration.

Synthesis of Co/CNTs Catalyst via Strong Electrostatic Adsorption: Effect of Calcination Condition

2015 ◽  
Vol 1109 ◽  
pp. 1-5 ◽  
Author(s):  
Omid Akbarzadeh ◽  
Noor Asmawati Mohd Zabidi ◽  
Bawadi Abdullah ◽  
Duvvuri Subbarao
Keyword(s):  
Nitric Acid ◽  
Thermal Treatment ◽  
Calcination Temperature ◽  
Textural Properties ◽  
Cobalt Nanoparticles ◽  
Adsorption Effect ◽  
Electrostatic Adsorption ◽  
Co Catalyst ◽  
Strong Electrostatic Adsorption

In this study, CNTs samples were prepared by refluxing CNTs in nitric acid for 16 h at 110 °C and then followed by thermal treatment. The Co catalyst was synthesized by the strong electrostatic adsorption (SEA) method on the treated CNTs support. The Co/CNTs samples were then calcined at temperatures of 300, 350, 400, 450 °C. Samples were characterized by TEM and N2adsorption. The size of cobalt nanoparticles and the textural properties were influenced by the calcination temperature. The TEM results showed that cobalt nanoparticles were well dispersed on the treated CNTs support.

Robot end effector based on electrostatic adsorption for manipulating garment fabrics

2021 ◽  
pp. 004051752110418
Author(s):  
Wenqian Feng ◽  
Yanli Hu ◽  
Xin rong Li ◽  
Lidong Liu
Keyword(s):  
Adsorption Capacity ◽  
Structural Parameters ◽  
Garment Industry ◽  
Industrial Robots ◽  
Force Model ◽  
Adsorption Effect ◽  
Electrostatic Adsorption ◽  
End Effector ◽  
Application Range ◽  
Capacity Model

To improve the effectiveness of industrial robots in the textile and garment industry, it is necessary to expand the application range of electrostatic adsorption end effectors and solve the problem of automatically grasping and transferring fabrics during garment processing. Taking weft-knit fabric as an example, this paper begins by analyzing the factors that influence the electrostatic adsorption capacity, and then constructing an electrostatic adsorption capacity model based on the fabric characteristics. Next, the shape arrangement and structural parameters of the electrode plate are optimized by taking the electrostatic adsorption force model and maximizing the adsorption force per unit area. Finally, the adsorption effect of the electrostatic adsorption end effector is verified by simulation and experiment. The verification results show that the electrode with a comb-shaped arrangement and optimized structural parameters can adsorb clothing fabric well and meets the requirements of clothing automated production lines. This study provides a new method for solving the problem of automatically grasping and transferring fabrics and provides technical support for improving automation in the garment industry.

scholarly journals Effects of Cobalt Loading, Particle Size, and Calcination Condition on Co/CNT Catalyst Performance in Fischer–Tropsch Reactions

Symmetry ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 7 ◽  
Author(s):  
Omid Akbarzadeh ◽  
Noor Mohd Zabidi ◽  
Yasmin Abdul Wahab ◽  
Nor Hamizi ◽  
Zaira Chowdhury ◽  
...  
Keyword(s):  
Particle Size ◽  
Fixed Bed ◽  
Xrd Analysis ◽  
Bet Surface Area ◽  
Fischer Tropsch ◽  
Strong Electrostatic Adsorption ◽  
Transmission Electron ◽  
Co Conversion ◽  
Cobalt Loading ◽  
Temperature Programmed

The strong electrostatic adsorption (SEA) method was applied to the synthesis of a cobalt (Co) catalyst on a multi-walled carbon nanotube (CNT) support. In order to uptake more of the cobalt cluster with higher dispersion, the CNT was functionalized via acid and thermal treatment. The Co/CNT catalyst samples were characterized by a range of methods including the Brunauer–Emmet–Teller (BET) surface area analyzer, transmission electron microscopy (TEM), X-ray powder diffraction (XRD) analysis, atomic absorption spectroscopy (AAS), and H2-temperature programmed reduction (H2-TPR) analysis. The data from the TEM images revealed that the catalyst was highly dispersed over the external and internal walls of the CNT and that it demonstrated a narrow particle size of 6–8 nm. In addition, the data from the H2-TPR studies showed a lower reduction temperature (420 °C) for the pre-treated catalyst samples. Furthermore, a Fischer–Tropsch synthesis (FTS) reaction was chosen to evaluate the Co/CNT catalyst performance by using a fixed-bed microreactor at different parameters. Finally finding the optimum value of the cobalt loading percentage, particle size, and calcination conditions of Co/CNT catalyst resulted in a CO conversion and C5+ selectivity of 58.7% and 83.2%, respectively.

Strong electrostatic adsorption of Pt onto SiO2 partially overcoated Al2O3—Towards single atom catalysts

2019 ◽  
Vol 151 (21) ◽  
pp. 214703 ◽  
Author(s):  
Zhenyu Bo ◽  
Lauren R. McCullough ◽  
Samuel Dull ◽  
M. Alexander Ardagh ◽  
Jie Wang ◽  
...  
Keyword(s):  
Single Atom ◽  
Electrostatic Adsorption ◽  
Strong Electrostatic Adsorption
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