scholarly journals Use of PVA/α-MnO2-stearic acid nanocomposite films prepared by sonochemical method as a potential sorbent for adsorption of Cd (II) ion from aqueous solution

2017 ◽  
Vol 37 ◽  
pp. 623-633 ◽  
Author(s):  
Shadpour Mallakpour ◽  
Forough Motirasoul
2016 ◽  
Vol 27 (6) ◽  
pp. 2416-2423 ◽  
Author(s):  
Chunfa Dong ◽  
Xianglin Zhang ◽  
Hao Cai ◽  
Chuanliang Cao ◽  
Kui Zhou ◽  
...  

Author(s):  
Yue Hong ◽  
Wenlong Xu ◽  
Yuanyuan Hu ◽  
Guihua Li ◽  
Mengjun Chen ◽  
...  

2017 ◽  
Vol 751 ◽  
pp. 368-373
Author(s):  
Patchara Pasupong ◽  
Kittisak Choojun ◽  
Naratip Vittayakorn ◽  
Panpailin Seeharaj

This study reported the preparation of nanocrystalline CoFe2O4 in single step by the sonochemical method in highly basic aqueous solution without requiring of high temperature calcination process. To prepare nanocrystalline CoFe2O4, the mixed solution of the required molar ratio of cobalt nitrate hexahydrate (Co (NO3).6H2O) and ferric nitrate nonahydrate (Fe (NO3).9H2O) was precipitated in high concentration of sodium hydroxide medium solution (NaOH) under high intensity ultrasonic irradiation (20 kHz, 150 W/cm2). The effect of NaOH concentration (5, 10, 15 and 20 M) on phase formation, microstructure and magnetic property of CoFe2O4 was investigated. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis (TGA) results showed that the as-prepared powders were single phase CoFe2O4 with cubic spinel structure. Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) study showed that nanocrystalline CoFe2O4 had monosized distorted spherical morphology and an agglomeration of the nanocrystalline CoFe2O4 into nanoparticles was observed when increasing the NaOH concentration. The nanocrystalline CoFe2O4 exhibited superparamagnetic property and the saturation magnetization (Ms) obtained from vibrating sample magnetometry (VSM) was found to correlate with the crystallite size and varied from 39-45 emu/g.


2000 ◽  
Vol 21 (6) ◽  
pp. 663-681
Author(s):  
Jerzy Jabłoński ◽  
Władysław Janusz ◽  
Marta Szymula ◽  
Jerzy Szczypa

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 19322-19330 ◽  
Author(s):  
Binoy Maiti ◽  
Sankar Maiti ◽  
Priyadarsi De

Side-chain stearic acid containing thermoresponsive and crystalline random copolymers are synthesized via RAFT technique, which self-assembled to spherical micellar structures in aqueous solution depending on stearate content in the copolymer.


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