Size and morphology of scorodite particles synthesized using ultrasound irradiation

2014 ◽  
Vol 53 (7S) ◽  
pp. 07KE05 ◽  
Author(s):  
Yuya Kitamura ◽  
Hirokazu Okawa ◽  
Takahiro Kato ◽  
Katsuyasu Sugawara
2021 ◽  
Author(s):  
Vikas S Hakke ◽  
Shirish Sonawane ◽  
Sivakumar Manickam ◽  
Sami Boufi ◽  
Dipak V Pinjari ◽  
...  

Abstract In the present study, an intensified approach for the synthesis of starch nanoparticles (SNPs) was demonstrated by using ultrasound-assisted acid hydrolysis method. The conventional acid hydrolysis for the synthesis of SNPs was intensified using ultrasound. The overall time required to convert starch granules to SNPs in the conventional acid hydrolysis method (48 h) was significantly reduced to 45 min by simultaneous acid hydrolysis and ultrasound irradiation. The acid concentration was found to be an important parameter for obtaining the desired size and morphology of the synthesized SNPs. The variation in the surface charges associated with the SNPs was confirmed through measuring their zeta potential. These potential charges on the surface of SNPs induce crystal growth among the synthesized nanoparticles. The irregular crystal morphology at higher acid concentration clearly shows SNPs' attachment with each other by coalescence. The higher crystallinity for SNPs was observed at low acid concentration; however, the lower acid concentration (0.5 M) leads to the smaller particle size of SNPs from 40 to 60 nm, with the overall yield of 23%. The proposed ultrasound method is more efficient and reproducible for the synthesis of SNPs for various applications.


2017 ◽  
Vol 35 ◽  
pp. 598-604 ◽  
Author(s):  
Yuya Kitamura ◽  
Hirokazu Okawa ◽  
Takahiro Kato ◽  
Katsuyasu Sugawara

Author(s):  
Jean-Pierre Jolivet

This much-anticipated new edition of Jolivet's work builds on the edition published in 2000. It is entirely updated, restructured and increased in content. The book focuses on the formation by techniques of green chemistry of oxide nanoparticles having a technological interest. Jolivet introduces the most recent concepts and modelings such as dynamics of particle growth, ordered aggregation, ionic and electronic interfacial transfers. A general view of the metal hydroxides, oxy-hydroxides and oxides through the periodic table is given, highlighting the influence of the synthesis conditions on crystalline structure, size and morphology of nanoparticles. The formation of aluminum, iron, titanium, manganese and zirconium oxides are specifically studied. These nanomaterials have a special interest in many technological fields such as ceramic powders, catalysis and photocatalysis, colored pigments, polymers, cosmetics and also in some biological or environmental phenomena.


2016 ◽  
Vol 9 (1) ◽  
pp. 76-84 ◽  
Author(s):  
Mohamed Mahmoud Nasef ◽  
Masoumeh Zakeri ◽  
Jahanbakhsh Asadi ◽  
Ebrahim Abouzari-Lotf ◽  
Arshad Ahmad ◽  
...  

2007 ◽  
Vol 61 (28) ◽  
pp. 5070-5073 ◽  
Author(s):  
Jihui Li ◽  
Jing Li ◽  
Mei Li

RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13331-13340 ◽  
Author(s):  
T. N. Ng ◽  
X. Q. Chen ◽  
K. L. Yeung

Flow-synthesis of mesoporous silica allows deliberate and precise control over the size and shapes and enables the preparation of complex microstructures (i.e., hollow spheres).


Lab on a Chip ◽  
2014 ◽  
Vol 14 (15) ◽  
pp. 2709-2716 ◽  
Author(s):  
Xue-Ying Wang ◽  
Zi-He Jin ◽  
Bo-Wen Gan ◽  
Song-Wei Lv ◽  
Min Xie ◽  
...  

We engineer interconnected 3D vascular networks in hydrogels using molded sodium alginate lattice as sacrificial templates. The size and morphology of simulated vascular networks were well controlled and a fully-developed endothelial layer was formed.


RSC Advances ◽  
2021 ◽  
Vol 11 (34) ◽  
pp. 20708-20719
Author(s):  
Magdalena Kulpa-Greszta ◽  
Anna Tomaszewska ◽  
Andrzej Dziedzic ◽  
Robert Pązik

Rapid hot-injection can be used for precise control of magnetic particle shape.


Sign in / Sign up

Export Citation Format

Share Document