Removal of antimonite (Sb(III)) from aqueous solution using a magnetic iron-modified carbon nanotubes (CNTs) composite: Experimental observations and governing mechanisms

Recent Advances in Ball-Milled Materials and Their Applications for Adsorptive Removal of Aqueous Pollutants

“…Heat, in some cases, can induc physical and chemical reactions to obtain the desired materials. But sometimes, the exces sively high heat is disadvantageous to materials preparation, such as the formation of un desired phase, sacrificial crystallinity, and destroyed construction [63][64][65][66]. The interposi tion of pauses in a ball milling treatment or operation in jars with appropriate temperature control is beneficial to avoid this unwanted heating effect [67].…”

“…A combination of ball milling and hydrothermal method could develop a FeOx@CNTs nanocomposite by milling CNTs in a mixture solution of FeCl 3 •6H 2 O and KOH. And the obtained magnetic iron oxides (Fe 3 O 4 ) were loaded on the sidewalls of CNTs through -OH, C-H, and C-O functional groups (Figure 4a) [66].…”

“…All of the specific affinity between Ce and Cr(VI), the small size of CeO 2 particles, and uniform distribution on the surface of CNTs were conducted to enhance Cr(VI) adsorptive removal [176]. Cheng et al [66] reported that the Sb(III) adsorption capacity by FeOx@CNTs was much higher than that by CNTs, and the best-fitted Redlich-Peterson model indicated that it was a mixed removal process dominated by chemical reactions. The weak peak intensity of -OH and movement of the Fe-O peak from 575 cm −1 to 587 cm −1 in the FTIR spectrum after Sb(III) adsorption suggested the involvement of -OH and Fe-O in the removal of Sb(III).…”

A recoverable magnetic surface ion-imprinted polymer based on graphene oxide for fast and selective adsorption of Ni(ii) from aqueous solution: experimental and DFT calculations

“…11 This technology needs the participation of various substrate materials that play a supporting role in the imprinting process. Currently, silica particles, 12 graphene oxide (GO), 13 chitosan (CTS), 14 carbon nanotubes (CNTs) 15 and Fe 3 O 4 microspheres 16 are extensively utilized as support materials. GO is a derivative of graphene with excellent hydrophilicity, high loading capacity and an ultra-high specific surface area due to its abundant hydroxyl and epoxide groups on the substrate surface and carboxyl groups on the edges, making it a highly functional substrate with abundant anchoring sites for surface imprinting technology.…”

Selective removal and recovery of Ni(ii) using a sulfonic acid-based magnetic rattle-type ion-imprinted polymer: adsorption performance and mechanisms

“…Currently, commonly used matrix materials include silica particles, graphene oxide (GO), chitosan (CTS), carbon nanotubes (CNTs) and Fe 3 O 4 microspheres. [14][15][16][17][18] Due to the magnetic properties of Fe 3 O 4 microspheres, its magnetic separation technology can well solve the problem of solid-liquid separation of imprinting materials in waste liquid, which has a great development prospect. 19 Recently, a rattletype magnetic IIPs was constructed.…”