Green method for producing hierarchically assembled pristine porous ZnO nanoparticles with narrow particle size distribution

2015 ◽  
Vol 151 ◽  
pp. 282-287 ◽  
Author(s):  
A. Escobedo-Morales ◽  
D. Téllez-Flores ◽  
Ma. de Lourdes Ruiz Peralta ◽  
J. Garcia-Serrano ◽  
Ana M. Herrera-González ◽  
...  
2021 ◽  
Author(s):  
Xiaoping Chen ◽  
Jiaqi Fu ◽  
Jiangang Li ◽  
Bohong Chen ◽  
Lei Yang ◽  
...  

In this work, submicron copper powder with narrow particle distribution was synthesized via a simple methanol thermal reduction method without using any surfactants. Smaller copper powder with narrower particle size...


2021 ◽  
Vol 63 (3) ◽  
pp. 209-217
Author(s):  
A. A. Ezhova ◽  
I. A. Gritskova ◽  
S. A. Gusev ◽  
S. A. Milenin ◽  
V. V. Gorodov ◽  
...  

2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
Linjing Zhu ◽  
Hongqiao Lan ◽  
Bingjing He ◽  
Wei Hong ◽  
Jun Li

Encapsulation of menthol in beeswax was prepared by a modified particles from gas-saturated solutions (PGSS) process with controlling the gas-saturated solution flow rate. Menthol/beeswax particles with size in the range of 2–50 μm were produced. The effects of the process conditions, namely, the pre-expansion pressure, pre-expansion temperature, gas-saturated solution flow rate, and menthol composition, on the particle size, particle size distribution, and menthol encapsulation rate were investigated. Results indicated that in the range of studied conditions, increase of the pressure, decrease of the gas-saturated solution flow rate, and decrease of the menthol mass fraction can decrease the particle size and narrow particle size distribution of the produced menthol/beeswax microparticles. An N2-blowing method was proposed to measure the menthol release from the menthol/beeswax microparticles. Results showed that the microparticles have obvious protection of menthol from its volatilization loss.


2005 ◽  
Vol 22 (11) ◽  
pp. 2944-2946 ◽  
Author(s):  
Zhang Jian-Hui ◽  
Xu Xue-Fei ◽  
Si Ming-Su ◽  
Zhou You-He ◽  
Xue De-Sheng

2018 ◽  
Vol 3 (5) ◽  
pp. 631-634 ◽  
Author(s):  
C. Daniel Scott ◽  
Ricardo Labes ◽  
Martin Depardieu ◽  
Claudio Battilocchio ◽  
Matthew G. Davidson ◽  
...  

Pure pyrazinamide has been produced in a coupled flow synthesis and crystallisation in high yield, pure polymorphic form (γ) and narrow particle size distribution.


Author(s):  
K.H. Ang ◽  
I. Alexandrou ◽  
N.D. Mathur ◽  
R. Lacerda ◽  
I.Y.Y. Bu ◽  
...  

An electric arc discharge in de-ionised water between a solid graphite cathode and an anode made by compressing Ni and C containing powders in a mass ratio of Ni:C = 7:3 was used here to prepare carbon encapsulated Ni nanoparticles in the form of powder suspended in water. The morphology of the produced material was analysed using high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD). The magnetic properties of the samples were determined using a Princeton vibrating sample magnetometer (VSM). Collection of the powder produced from different depths in the water container has proved to be an effective method for obtaining samples with narrow particle size distribution. Further material purification by dry NH4 plasma etching was used to remove the amorphous carbon content of the samples. XRD and HRTEM analysis showed that the material synthesized is fcc Ni particles with mean particle size ranging from 14 to 30 nm encapsulated in 2 to 5 graphitic cages. The data suggests that the process reported has the ability to mass-produce carbon encapsulated ferromagnetic nanoparticles with desired particle size distribution, and hence with controlled size-dependent magnetic properties.


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