Open AccessThe synthesis of urchin-like γ-Al2O3 hierarchical microspheres from Al foils and its rapid adsorption ability towards Congo red
Author(s) -
Kaizhong Feng,
Jie An,
Weian Ren,
Xiaoling Lei,
Gaoying Li,
Daoqing Rong,
Wen Xi
Publication year - 2020
Publication title -
materials research express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.383
H-Index - 35
ISSN - 2053-1591
DOI - 10.1088/2053-1591/ab7a62
Subject(s) - congo red , mesoporous material , calcination , materials science , adsorption , chemical engineering , aqueous solution , hydrothermal circulation , non blocking i/o , hydroxide , specific surface area , nanotechnology , microsphere , ammonium hydroxide , nuclear chemistry , catalysis , chemistry , organic chemistry , engineering
In this paper, we present a convenient hydrothermal method to synthesize hierarchical microspheres consisting of ammonium aluminum carbonate hydroxide (AACH) nanowires with a diameter of about 400 nm and length ∼50 μ m on aluminum foils. After calcination at 900 °C, hierarchical γ -Al 2 O 3 microspheres with mesoporous structures were obtained successfully, which possess a high specific surface area of 124 m 2 g −1 and high porosity of 0.71cm 3 g −1 . The possible formation mechanism was discussed. The as-prepared mesoporous γ -Al 2 O 3 hierarchical nanostructures exhibited improved adsorption performance towards Congo red in aqueous solution, 90% CR could be removed rapidly in 20 min, and its saturation adsorption capacity in 80 mg l −1 Congo red can reach to 180 mg g −1 , it suggests that the hierarchical γ -Al 2 O 3 microspheres with unique microstructure have potential in wastewater treatment.