Hierarchical aminated PAN/γ–AlOOH electrospun composite nanofibers and their heavy metal ion adsorption performance

Production of polyacrylonitrile/boehmite nanofibrous composite tubular structures by opposite‐charge electrospinning with enhanced properties from a low‐concentration polymer solution

“…The three peaks at 764, 626, and 480 cm −1 were related to the vibration modes of AlOAl in BNPs. The peak at the frequency of 1068 cm −1 was related to the vibration of hydrogen bonding between AlOH groups, as has also been reported by other researchers …”

“…Jin et al reported direct fabrication of three‐dimensional flower‐like CNT(carbon nanotube) nanofibers foams by freeze‐drying aqueous solutions of electrospun PAN nanofibers and CNTs to produce multiple‐layered CNT nanosheets with a large enough surface area and excellent mechanical properties and adsorption capacities for selective adsorption processes and environmental applications. In addition, Sun et al produced PAN/γ‐AlOOH electrospun composite nanofibers for adsorption of heavy metals. Besides, the polymeric nanofibers produced by this method can be used for different applications such as gas sensors, solar cells, and bulk heterojunction solar cells .…”

Electrospun poly(acrylic acid)/poly(vinyl alcohol) nanofibrous adsorbents for Cu(ii) removal from industrial plating wastewater

“…45,46 Aer Cu(II) adsorption in synthetic solution and industrial plating wastewater, a new peak appeared at 1617 cm À1 due to the interactions between Cu(II) and carboxyl oxygen on the surfaces of the nanobrous adsorbents. 22 The XPS spectra of the nanobrous adsorbents before/aer Cu(II) removal experiments are presented in Fig. 3.…”

“…[12][13][14][15][16][17][18] Among electrospun nanobers from solvent-soluble polymers, PAN nanobers have been most commonly used in the adsorption of Cu(II) because the amino groups on the surface of PAN form strong complexes with Cu(II). [19][20][21][22][23] Even with its good performance for Cu(II) removal, however, PAN dissolves in toxic organic solvent due to its high crystallinity, causing environmental problems during nanober synthesis. Other researchers have fabricated electrospun nanobers using environmentally friendly and water-soluble polymers such as chitosan, poly(vinyl alcohol) (PVA), and poly(acrylic acid) (PAA).…”

Aluminum oxyhydroxide-doped PMMA hybrids powder prepared via facile one-pot method towards copper ion removal from aqueous solution

“…The Al-based nanostructures containing aluminum oxide, aluminum hydroxide, and aluminum oxyhydroxide have been broadly investigated due to their outstanding physicochemical features for Cu(II) removal [11,12]. The different chemical features of AlOOH surface facilitate many applications in advanced catalysts [13] and heavy metal adsorbents [14]. Boehmite has many acidic sites on its surface which facilitate copper complexes adsorption in different aqueous media.…”