Ionothermal confined self-organization for hierarchical porous magnesium borate superstructures as highly efficient adsorbents for dye removal

Abstract

Uniform hierarchical porous MgBO2(OH)/ Mg2B2O5 superstructures were obtained for the first time via a facile ionothermal route, both of which exhibited excellent removal efficiency for Congo red with good recyclability and reusability.

MIL-68 (In) nano-rods for the removal of Congo red dye from aqueous solution

“…Furthermore, to demonstrate the advantage of the MIL-68 (In) nanorods, a comparison between it and some adsorbents is provided in Table 1. It can be seen the adsorption effect of MIL-68 (In) nanorods is significantly higher than that of most materials reported so far [27][28][29][30][31][32][33]. Solution pH is an important factor in the adsorption process.…”

Hierarchical γ-BaB2O4 hollow microspheres: surfactant-assisted hydrothermal formation, phase conversion, optical properties and application as adsorbents

“…7(a 1 , b 1 )) on one hand and further growth of the constitutional nanorods during the high-temperature annealing on the other hand. 48 The BET surface area of the present hierarchical γ-BaB 2 O 4 hollow microspheres was somehow smaller than that of the hierarchical porous MgBO 2 (OH) microspheres (57.22 m 2 g -1 ), 6 whereas larger than that of the porous Ca(BO 2 ) 2 microspheres (42.7 m 2 g -1 ), 12 flower-like Bi 2 MoO 6 hollow spheres (40.0 m 2 g -1 ), 36 CoFe 2 O 4 microspheres (32.3 m 2 g -1 ), 37 and SrCO 3 submicron spheres (40.2 m 2 g -1 ), 38 suggesting potential applications of the present hollow microspheres in catalysis, adsorption and etc. Fig.…”

“…where q t (mg g -1 ) is the adsorption capacity at time t, c 0 (mg L -1 ) is the initial concentration of the 6 Pb 2+ solution, c t (mg L -1 ) indicates the concentration of the Pb 2+ solution at any time t, v (L) is the volume of the Pb 2+ solution, and m (g) is the mass of the adsorbents employed .…”

“…Among varieties of 3D hierarchical nanoarchitectures, metal borates have been paid extensive attention for their versatile compositions and unique properties which have been widely employed as adsorbents, 6 anti-wear additives, 7 photoluminescence host material, 8 micro-/nanoscale nonlinear photonic devices, [9][10][11] catalyst support, 12 and etc. So far however, in addition to some more frequently encountered one-dimensional (1D) borates nanostructures, there have been just a few 3D hierarchical alkaline earth metal borates reported, including hierarchical porous MgBO 2 (OH) superstructures, 6 hierarchical Ba 2 (B 5 O 9 )Cl·(H 2 O) 0.5 microspheres, 8 flower-like Mg 3 B 2 O 6 , 13 hierarchical porous Ca(BO 2 ) 2 microspheres, 12 14 flower-like and urchin-like Mg 3 B 2 O 6 :Eu 3+ . 15 Thus, much more work should be dedicated to challenging controllable fabrication of 3D metal borates nanostructures with high uniformity and complex interiors through facile synthetic routes.…”

Influence of chemical structure of dyes on capacitive dye removal from solutions

“…The development of methods of dye removal from solutions is a subject of intense experimental works. Many investigations were focused on the development of efficient adsorbents [31][32][33]. Efforts to increase dye removal efficiency have resulted in the development of adsorbent materials with magnetic properties [34].…”