Utilization of porous carbon synthesized with textile wastes via calcium acetate template for tetracycline removal: The role of template agent and the formation mechanism

Chemosphere ◽  
2021 ◽  
pp. 133148
Author(s):  
Siyi Gu ◽  
Yongheng Wang ◽  
Daofang Zhang ◽  
Mengmeng Xiong ◽  
He Gu ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Porous Carbon ◽  
Calcium Acetate

Microscopic Insights into Water Adsorption in Carbon Nanopore – The Role of Acidic and Basic Functional Groups and their Configurations

2021 ◽  
Author(s):  
Lumeng Liu ◽  
Wenmao Zeng ◽  
Shiliang Johnathan Tan ◽  
Meng Liu ◽  
Duong Do
Keyword(s):  
Functional Groups ◽  
Porous Carbon ◽  
Water Adsorption ◽  
Water Clusters ◽  
Pivotal Role

Functional groups (FGs) in porous carbon play a pivotal role in water adsorption by nucleating water clusters followed by their coalescence, the process for which is the precursor for the...

The Formation Mechanism of Equiaxed Crystals in Pure Aluminum Solidification Structure under the Al-Ti-C Master Alloy

2013 ◽  
Vol 668 ◽  
pp. 865-869
Author(s):  
Wan Wu Ding ◽  
Wen Jun Zhao ◽  
Tian Dong Xia
Keyword(s):  
Transition Zone ◽  
Formation Mechanism ◽  
Master Alloy ◽  
Heterogeneous Nucleation ◽  
Pure Aluminum ◽  
Solidification Structure ◽  
Impact Mechanism ◽  
Tic Particle ◽  
The Impact

The influence of different solidified velocities on the structure of pure aluminum during the process of refinement by Al-5Ti-0.6C master alloy was studied and the impact mechanism was discussed. The results show that at the same solidified velocity, with the increase of the amount of Al-5Ti-0.6C master alloy, in the solidified structure of pure aluminum, columnar crystals will gradually decrease, while equiaxed crystals will gradually increase. But in the case when the level of addition is the same, the faster the solidified velocity, the greater the number of equiaxed crystals will be in the ingot microstructure. The formation of equiaxed crystals is the result of the dual role of dissociation of crystal particles and heterogeneous nucleation of “TiC particle---Ti transition zone”.

Role of cation diffusion in the formation mechanism and properties of cobalt-doped n-type pyrite thin films

2013 ◽  
Vol 48 (14) ◽  
pp. 4914-4924 ◽  
Author(s):  
P. Díaz-Chao ◽  
J. R. Ares ◽  
I. J. Ferrer ◽  
C. Sánchez
Keyword(s):  
Thin Films ◽  
Formation Mechanism ◽  
Cation Diffusion

Fundamental role of Fe–N–C active sites in a CO2-derived ultra-porous carbon electrode for inhibiting shuttle phenomena in Li–S batteries

2021 ◽  
Author(s):  
Jeongwoo Yang ◽  
Dong Woo Kang ◽  
Hodong Kim ◽  
Jae Hyun Park ◽  
Won Yeong Choi ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Active Sites ◽  
Solution Treatment ◽  
Ammonia Solution ◽  
Energy Reduction ◽  
Carbon Electrode ◽  
Lithium Sulfide ◽  
Porous Carbon Electrode ◽  
Li Ion

The homogeneously distributed Fe–N–C active sites of TCPC/Fe–N–C synthesized through CO2 conversion and ammonia solution treatment enable thermodynamically favorable energy reduction for lithium sulfide conversion and Li-ion transport.

scholarly journals Profile Map of Weld Beads and Its Formation Mechanism in Gas Metal Arc Welding

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 146 ◽  
Author(s):  
Zhanhui Zhang ◽  
Jiaxiang Xue
Keyword(s):  
Flow Pattern ◽  
Formation Mechanism ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Bottom Wall ◽  
Central Plane ◽  
Metal Arc Welding ◽  
Three Stages ◽  
Bead Profile

In order to investigate the profile map of weld beads and its formation mechanism in gas metal arc welding (GMAW), bead-on-plate welding was carried out with different average currents, and the dimensions of a weld bead were measured. The results show that the profile of weld beads can be divided into three stages according to the volume relationship between the melted filler metal and the weld pool. During the stages, the top surface of the reinforcement consisting of the central plane and the side plane mainly goes through inversed-U, W, V, and U shapes, which are mainly attributed to the change of flow pattern. Moreover, the role played by the bottom wall in determining the flow pattern and the resultant bead profile has been investigated as well. The experiment results show that with the bottom wall changing from the solid to the totally melted state, the role of redirecting, redistributing and bearing the molten metal played by the bottom wall gradually disappears. As a result, the side reinforcement is no longer covered by the liquid flowing backward. The top reinforcement is thoroughly collapsed when the width of the bottom reinforcement exceeds that of the top one by 1.1 mm.

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