scholarly journals Core–shell superparamagnetic monodisperse nanospheres based on amino-functionalized CoFe2O4@SiO2 for removal of heavy metals from aqueous solutions

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 6911-6921 ◽  
Author(s):  
Chunrong Ren ◽  
Xingeng Ding ◽  
Huiqin Fu ◽  
Wenqi Li ◽  
Huating Wu ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Aqueous Solutions ◽  
Saturation Magnetization ◽  
Core Shell ◽  
High Saturation Magnetization ◽  
Adsorption Performance ◽  
High Saturation ◽  
Removal Of Heavy Metals

Monodisperse CoFe2O4@SiO2–NH2 core–shell superparamagnetic nanospheres had high saturation magnetization and adsorption performance for Cu(ii), Cd(ii) and Pb(ii).

scholarly journals High saturation magnetization superparamagnetic Fe/Ni core/shell microparticles for chromium removal

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42363-42369 ◽  
Author(s):  
Zhaoqing Lu ◽  
Yanling Xu ◽  
Shaomin Zhou
Keyword(s):  
Saturation Magnetization ◽  
Core Shell ◽  
Chromium Removal ◽  
High Saturation Magnetization ◽  
High Saturation

In this paper, the Fe/Ni microparticles are synthesized by two reactions which directly utilize H2 to reduce NiO and Fe3O4 microspheres.

Metal-based magnetic fluids with core–shell structure FeB@SiO2 amorphous particles

Soft Matter ◽  
2017 ◽  
Vol 13 (37) ◽  
pp. 6340-6348 ◽  
Author(s):  
Mengchun Yu ◽  
Xiufang Bian ◽  
Tianqi Wang ◽  
Junzhang Wang
Keyword(s):  
High Temperature ◽  
Saturation Magnetization ◽  
Shell Structure ◽  
Magnetic Fluids ◽  
Core Shell ◽  
High Saturation Magnetization ◽  
Temperature Performance ◽  
High Saturation ◽  
Core Shell Structure ◽  
Amorphous Particles

Metal-based magnetic fluids with desirable high temperature performance based on core–shell FeB@SiO2 amorphous particles with high saturation magnetization.

scholarly journals An advancement in the synthesis of unique soft magnetic CoCuFeNiZn high entropy alloy thin films

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Chokkakula L. P. Pavithra ◽  
Reddy Kunda Siri Kiran Janardhana ◽  
Kolan Madhav Reddy ◽  
Chandrasekhar Murapaka ◽  
Joydip Joardar ◽  
...  
Keyword(s):  
Thin Films ◽  
Saturation Magnetization ◽  
Functional Materials ◽  
Single Step ◽  
High Entropy Alloy ◽  
High Saturation Magnetization ◽  
Soft Magnetic ◽  
High Entropy ◽  
High Saturation ◽  
Electrochemical Approach

AbstractDiscovery of advanced soft-magnetic high entropy alloy (HEA) thin films are highly pursued to obtain unidentified functional materials. The figure of merit in current nanocrystalline HEA thin films relies in integration of a simple single-step electrochemical approach with a complex HEA system containing multiple elements with dissimilar crystal structures and large variation of melting points. A new family of Cobalt–Copper–Iron–Nickel–Zinc (Co–Cu–Fe–Ni–Zn) HEA thin films are prepared through pulse electrodeposition in aqueous medium, hosts nanocrystalline features in the range of ~ 5–20 nm having FCC and BCC dual phases. The fabricated Co–Cu–Fe–Ni–Zn HEA thin films exhibited high saturation magnetization value of ~ 82 emu/g, relatively low coercivity value of 19.5 Oe and remanent magnetization of 1.17%. Irrespective of the alloying of diamagnetic Zn and Cu with ferromagnetic Fe, Co, Ni elements, the HEA thin film has resulted in relatively high saturation magnetization which can provide useful insights for its potential unexplored applications.

Removal of heavy metals from aqueous solutions using activated carbon prepared fromCicer arietinum

2010 ◽  
Vol 92 (8) ◽  
pp. 1447-1460 ◽  
Author(s):  
D.K.V. Ramana ◽  
K. Jamuna ◽  
B. Satyanarayana ◽  
B. Venkateswarlu ◽  
M. Madava Rao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Aqueous Solutions ◽  
Removal Of Heavy Metals

scholarly journals Study on Adsorption of Cu and Ba from Aqueous Solutions Using Nanoparticles of Origanum (OR) and Lavandula (LV)

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Ghadah M. Al-Senani ◽  
Foziah F. Al-Fawzan
Keyword(s):  
Heavy Metals ◽  
Particle Size ◽  
Free Energy ◽  
Aqueous Solutions ◽  
Thermodynamic Parameters ◽  
Solution Ph ◽  
Environment Friendly ◽  
Removal Of Heavy Metals ◽  
Equilibrium Data ◽  
Langmuir And Freundlich Models

Wild herbs (Origanum (OR) and Lavandula (LV)) were used as environment-friendly adsorbents in this study. The adsorbents were used for adsorption of Cu and Ba from water. The adsorption of heavy metals onto OR and LV was dependent on particle size, dose, and solution pH. The diameter of adsorbent particles was less than 282.8 nm. The adsorption follows second-order kinetics. Langmuir and Freundlich models have been applied to describe the equilibrium data, and the thermodynamic parameters, the Gibbs free energy, ∆G°, enthalpy, ∆H°, and entropy, ∆S°, have been determined. The positive value of ∆H° suggests that the adsorption of heavy metals by the wild herbs is endothermic. The negative values of ∆G° at all the studied temperatures indicate that the adsorption is a spontaneous process. It can be concluded that OR and LV are promising adsorbents for the removal of heavy metals from aqueous solutions over a range of concentrations.

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