Highly efficient removal of Pb(II) and Cd(II) ions using magnesium hydroxide nanostructure prepared from seawater bittern by electrochemical method

Facile fabrication of Fe3O4@Mg(OH)2 magnetic composites and their application in Cu(ii) ion removal

“…Further investigation into the Fe 3 O 4 @Mg(OH) 2 -3 composite's adsorption behavior for Cu( ii ) was done by fitting experimental data to the pseudo-first-order kinetic model, pseudo-second-order kinetic model, and the in-particle diffusion model 12 as demonstrated below:ln( q e − q t ) = ln q e − k 1 t q t = k id t 0.5 + C id where q t (mg g −1 ) and q e (mg g −1 ) denote the adsorption capacities of the Fe 3 O 4 @Mg(OH) 2 -3 composites at time t (min) and at equilibrium, k 1 (min −1 ) and k 2 (g mg −1 min −1 )) denote the equilibrium rate constants in the pseudo-first-order and pseudo-second-order kinetic models, respectively. k id denotes the adsorption rate constant (mg g −1 min −0.5 ), and C id is the constant of the in-particle diffusion model.…”

“…The diffraction peaks at approximately 30.32°, 35.65°, 43.24°, 57.43°, and 63.06°could be attributed to the diffraction patterns of the Fe 3 O 4 crystal with a face-centered cubic spinel structure (JCPDS #88-0866). 27 Meanwhile, the residual diffraction peaks corresponding to the as-prepared composites, at approximately 18.53°, 32.88°, 37.94°, 50.84°, and 58.68°, corresponded to the (001), ( 100), ( 101), (102), and (110) planes, respectively, of hexagonal Mg(OH) 2 (JCPDS #44-1482), 12 con-rming the successful generation of the Fe 3 O 4 @Mg(OH) 2 composites.…”

“…Further investigation into the Fe 3 O 4 @Mg(OH) 2 -3 composite's adsorption behavior for Cu(II) was done by tting experimental data to the pseudo-rst-order kinetic model, pseudosecond-order kinetic model, and the in-particle diffusion model 12 as demonstrated below: ln(q e − q t ) = ln q e − k 1 t…”

“…Magnesium hydroxide (Mg(OH) 2 ), and especially its nano form, has recently garnered considerable attention because of its high adsorption capability, low cost, and low adverse impact on the environment. 12,13 For example, Zhu et al demonstrated the efficient adsorption of Pb(II) and Cd(II) ions from wastewater utilizing coral-like hierarchical porous Mg(OH) 2 . 14 Jiang et al reported a 92.6% removal rate of Ni(II) ions from wastewater using ower-like globular Mg(OH) 2 .…”

Effects on Structural Morphological and Optical Properties Pure and CuO/ZnO Nanocomposite

“…A nanomaterial is a material with a size range of 1 to 100 nm. Nanoparticles have a small particle size, a narrow pore size distribution, little agglomeration, and high dispersion [1][2][3][4][5]. Gas sensors, beauty products, medicine, displays, batteries, paints, catalysis, food engineering (manufacturing, processing, safety, and packaging), farming, energy (storage and conversion), and construction are just a few of the applications for nanomaterial's [6][7][8][9][10][11][12].…”