Technique for measuring the surface roughness of metallic electrodes in aqueous solution (Abstract Only)

1990 ◽  
Author(s):  
Khaled J. Habib
Keyword(s):  
Aqueous Solution ◽  
Surface Roughness ◽  
Metallic Electrodes

Influence of Surface Roughness on Cetyltrimethylammonium Bromide Adsorption from Aqueous Solution

Langmuir ◽  
2011 ◽  
Vol 27 (10) ◽  
pp. 6091-6098 ◽  
Author(s):  
Shuqing Wu ◽  
Liu Shi ◽  
Lucas B. Garfield ◽  
Rico F. Tabor ◽  
Alberto Striolo ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Roughness ◽  
Cetyltrimethylammonium Bromide

Effect of Surface Roughness and Electrostatic Surface Potentials on Forces Between Dissimilar Surfaces in Aqueous Solution

2011 ◽  
Vol 23 (20) ◽  
pp. 2294-2299 ◽  
Author(s):  
Markus Valtiner ◽  
Kai Kristiansen ◽  
George W. Greene ◽  
Jacob N. Israelachvili
Keyword(s):  
Aqueous Solution ◽  
Surface Roughness ◽  
Surface Potentials ◽  
Effect Of Surface

Preparation and Characterization of TiO2 Nanoparticles / CNTs Composite Particles

2012 ◽  
Vol 268-270 ◽  
pp. 172-175
Author(s):  
Ming Qiu Wang ◽  
Jun Yan ◽  
Shi Guo Du ◽  
Bin Wang ◽  
Hao Qin
Keyword(s):  
Aqueous Solution ◽  
Surface Roughness ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Tetrabutyl Titanate ◽  
Composite Particles ◽  
Absorption Intensity ◽  
Main Material

By using tetrabutyl titanate as the main material, TiO2 nanoparticles / CNTs composite particles have been prepared in acidic abundant aqueous solution at low temperature without calcination. The microstructure of the composite particles, including surface morphology, phase composition and specific surface area was characterized by SEM, TEM, Raman, XPS and BET. The results reveal that TiO2 nanoparticles coated uniformly on CNTs surfaces were mainly anatase type. The surface roughness of CNTs was remarkably increased after coating. However, the specific surface area of composite particles decreased by 23.4 m2•g-1 than that of CNTs with uncoated TiO2. Photocatalytic activity of TiO2 nanoparticles / CNTs composite particles shows a significant increase of absorption intensity both in ultraviolet band and visible light band according to UV-vis spectra.

Effect of Heating Time on the Structural Properties of Cadmium Telluride Nanoparticles Prepared by Aqueous Solution Method with Organic Stabilizing Agent

2018 ◽  
Vol 915 ◽  
pp. 237-242
Author(s):  
Sudad S. Ahmed ◽  
Rawa K. Ibrahim ◽  
Kadhim A. Aadim ◽  
Asama N. Naje ◽  
Omar A. Adnan ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Roughness ◽  
Particle Size ◽  
Cadmium Telluride ◽  
Solution Method ◽  
Ph Value ◽  
Heating Time ◽  
Heating Process ◽  
Cdte Nanoparticles ◽  
Aqueous Solution Method

In this work, the preparation of cadmium telluride (CdTe) nanoparticles by aqueous solution method is presented. The preparation process was performed in the presence of an acidic agent (L-cys) at certain pH value. The x-ray diffraction (XRD) patterns and scanning electron microscopy (SEM) of the prepared samples showed that poly crystalline structure with lowest particle size can be produced by controlling the period of heating process after the preparation step. Accordingly, this parameter can be used carefully to control the surface roughness of nanoscale CdTe samples to serve certain applications requiring some determined values of particle size and surface roughness.

scholarly journals Preparation and Optimization Green Gel Casting Technique for Manufacturing Near-Net-Shape Ceramics Using Genetic Algorithm

2021 ◽  
Vol 877 (1) ◽  
pp. 012035
Author(s):  
Mohammed A. Ahmed Al-dujaili ◽  
Imad Ali Al-hydary ◽  
Montaha Abdalhussien
Keyword(s):  
Genetic Algorithm ◽  
Aqueous Solution ◽  
Surface Roughness ◽  
Yttria Stabilized Zirconia ◽  
Solid Loading ◽  
Stabilized Zirconia ◽  
Casting Technique ◽  
Gel Casting ◽  
Near Net Shape ◽  
Cross Linker

Abstract Gel casting technique is a promising technology that has ability to produce near-net shape ceramics via using toxic and non-ecofriendly agents. The current work aim to develop green gel casting technique using water as a solvent, agar as a gelling agent, and the microwave thermal treatment instead of cross linker. 8mo l% Yttria stabilized zirconia was selected as a case study to produce near-net shape ceramics. The experimental work involved the preparation of Yttria stabilized zirconia nanoparticles via chemical precipitation method. The effect study of agar ratio, Yttria stabilized zirconia solid loading percent on the physical, mechanical, surface properties of the prepared ceramics and selecting of suitable casting conditions. The study has been found that the microwave thermal treatment develops thermally activated cross linking in the agar aqueous solution leading to higher glass transition temperature for agar. The green combination (agar aqueous solution and microwave treatment) can be used as alternative to (monomer, solvent, cross linker) Companion. Also, using the ultrasonic treatment can effectively eliminate needs for dispersants, also the vacuum de-airing treatment. Yttria stabilized zirconia ceramic with high dimensional accuracy, low surface roughness (Ra=2. 81 nm) can be obtained using an agar ratio of (0.4%) and solid loading of (65%). The sample can be moulded with complex shape and the green gel, also the pre-sintered body is machineable. The sintered samples have a porosity of (31%) and compressive strength of (234MPa). Regression analysis and genetic algorithm are showed that the obtained microhardness, compressive strength, and surface roughness are predictable.

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