Lamellar γ-AlOOH architectures: Synthesis and application for the removal of HCN

Alumina-based nanoparticles obtained by anodic dissolution of Al in electrolytes with alcohol solvents

“…The broad band at 3,750-3,000 cm −1 originates from OH groups, which are adsorbed on surfaces of Al(OH) 3 nanoparticles [20]. Such a broadening is also an effect of the aluminum ion nature, which forms [Al 3 (OH) 4 5 ] 0 in neutral environments [22,23]. Such an accumulation of OH groups in various configurations has to yield a broad band at the wavelength corresponding to OH group oscillations.…”

“…The biochar/AlOOH nanocomposite can be used as a multifunctional and highly effective adsorbent to remove aqueous contaminates, such as organic and inorganic pollutants from wastewater [3]. The lamellar γ-AlOOH architectures may be applied as potential adsorbents for HCN in toxic pollutant solutions and cigarette smoke [4]. The next example is AlOOH boehmite in a form of nanorods, which is used as filler for sol-gel and polymerbased composite coatings, which improves the fracture toughness [5].…”

“…Typically, these are hydrothermal methods [4,9,10]. Hou et al [4] synthesized lamellar γ-AlOOH architectures via a hydrothermal route.…”

“…Typically, these are hydrothermal methods [4,9,10]. Hou et al [4] synthesized lamellar γ-AlOOH architectures via a hydrothermal route. Different product structures were obtained by varying the molar ratio of aluminum nitrate and cetyl trimethyl ammonium bromide (CTAB) [4].…”

“…Hou et al [4] synthesized lamellar γ-AlOOH architectures via a hydrothermal route. Different product structures were obtained by varying the molar ratio of aluminum nitrate and cetyl trimethyl ammonium bromide (CTAB) [4]. To synthesize γ-AlOOH nanorods, AlCl 3 and NH 4 OH were used as reactants and H 2 SO 4 played the role of a morphologydirecting agent [9].…”