Adsorptive removal of methyl orange using mesoporous maghemite

Effective removal of methylene blue from aqueous solution using a new magnetic iron oxide nanosorbent prepared by combustion synthesis

“…Maghemite (c-Fe 2 O 3 ) nanoparticles have been used as an adsorbent for Cr(VI) (Hu et al 2005(Hu et al , 2006, Cu(II) (Hu et al 2006;White et al 2009), As(III) (White et al 2009), Ni(II) (Hu et al 2006;White et al 2009), Cd(II), Pb(II), Zn(II) (White et al 2009), and methyl orange (Asuha et al 2011) removal from wastewater. Cr(VI) was also successfully removed using magnetite (Fe 3 O 4 ) (Hu et al 2004), diatomite-supported magnetite (Yuan et al 2010), and a mixture of maghemite and magnetite nanoparticles modified with polyethylenimine (Pang et al 2011).…”

Structural and Magnetic Properties of Monophasic Maghemite (<i>γ</i>-Fe<sub>2</sub>O<sub>3</sub>) Nanocrystalline Powder

“…Some of them include antitumor drug delivery [1], removal of industrial pollutants from water [2], manipulation of biomedical objects [3].…”

“…Besides, for a more accurate calculation of the blocking temperature and the magnetic diameter, in this work we perform the magnetic measurements at different temperatures. 2 were dissolved in the solution under continuous stirring. The resulting solution was dropped wise into 250 mL of 1.5 M NaOH solution under vigorous stirring up to obtain a black precipitate with pH = 12.…”

Fabrication and Catalytic Decoloration Capacity of Nanodendritic Metals

“…8 demonstrates that nanodenditic Au can catalytically reduce the MO concentration by chemical decomposition of methyl orange and not by the simple adsorption of MO on the surface of the nanoporous Au, such as reported in the case of mesoporous iron oxides. 14) As shown in Fig. 7, nanodendritic Au decomposed methyl orange more efficiently than nanoporous Au.…”