Pedotransfer function for estimation of soil-specific surface area using soil fractal dimension of improved particle-size distribution

NiO nanoparticles with average particle size of 25 nm were successfully prepared by anodic arc plasma method. The composition, morphology, crystal microstructure, specific surface area, infrared spectra, and particle size distribution of product were analyzed by using X-ray diffraction (XRD), transmission electron microscopy (TEM) and the corresponding selected area electron diffraction (SAED), Fourier transform infrared (FTIR) spectrum, and Brunauer-Emmett-Teller (BET)N2adsorption. The experiment results show that the NiO nanoparticles are bcc structure with spherical shape and well dispersed, the particle size distribution ranging from 15 to 45 nm with the average particle size is about 25 nm, and the specific surface area is 33 m2/g. The infrared absorption band of NiO nanoparticles shows blue shifts compared with that of bulk NiO.

Download Full-text

Measurement of the specific surface area and particle size distribution of atmospheric aerosol reference materials

Atmospheric Environment ◽

10.1016/j.atmosenv.2013.04.033 ◽

2013 ◽

Vol 75 ◽

pp. 1-5 ◽

Cited By ~ 17

Author(s):

Tomoaki Okuda

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Specific Surface ◽

Size Distribution ◽

Surface Area ◽

Specific Surface Area ◽

Reference Materials ◽

Atmospheric Aerosol

Download Full-text

Effect of Specific Surface Area and Particle Size Distribution on the Densification of Gadolinium Doped Ceria

Advances in Solid Oxide Fuel Cells and Electronic Ceramics - Ceramic Engineering and Science Proceedings ◽

10.1002/9781119211501.ch2 ◽

2015 ◽

pp. 13-20 ◽

Cited By ~ 1

Author(s):

K. Paciejewska ◽

A. Weber ◽

S. Kühn ◽

M. Kleber

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Specific Surface ◽

Size Distribution ◽

Surface Area ◽

Specific Surface Area ◽

Doped Ceria ◽

Gadolinium Doped Ceria

Download Full-text

Influence and Mechanism Analysis of Particle Size Distribution of Multi-System Mineral Admixture on Concrete Performance

Materials Science Forum ◽

10.4028/www.scientific.net/msf.1036.386 ◽

2021 ◽

Vol 1036 ◽

pp. 386-394

Author(s):

Fu Xing Cheng ◽

Yong Liu ◽

Ji Xiao ◽

Xiao Xu Deng ◽

Hai Long Wang

Keyword(s):

Mechanical Properties ◽

Particle Size ◽

Particle Size Distribution ◽

Specific Surface ◽

Mechanical Activation ◽

Size Distribution ◽

Surface Area ◽

Specific Surface Area ◽

Mineral Admixture ◽

Mechanism Analysis

To explore the effect of mechanical activation on the particle size distribution of the composite admixture a self-designed test jet mill is used. We have studied the effects of different specific surface areas of composite admixtures on the workability, mechanical properties and durability of concrete and combined X-ray diffraction (XRD) with scanning electron microscopy (SEM) to analyze the mechanism of concrete performance improvement. Results showed that, mechanical activation can significantly increase the content of particles below 3 um; appropriate increase in the specific surface area of composite admixture is conducive to improving the performance of concrete; As the specific surface area increases, the hydration activity of the composite admixture increases first and then tends to be stable; during the hydration process, more thin-plate Ca(OH)2 is converted into needle-shaped AFt, which improves the cement-based material and thereby improving the macro mechanical properties and durability.

Download Full-text