Open AccessNano‐montmorillonite‐based porous material prepared by gel casting: structure and adsorption properties
Author(s) -
E Tao,
Li Ying,
Yang Shuyi,
Qian Jianhua,
Liu Lin,
Xing Jinjuan
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0531
Subject(s) - adsorption , montmorillonite , sintering , nano , materials science , porosity , chemical engineering , lamellar structure , casting , nuclear chemistry , metallurgy , chemistry , composite material , organic chemistry , engineering
Porous materials (P‐Mt) were prepared via gel casting method by nano‐montmorillonite (Nano‐Mt) powder. P‐Mt possessed adsorption capability to low concentration Cr 3+ in tanning waste water. The initial concentration of Cr 3+ was 10 mg/L (pH = 3 ± 0.1), its removal rate and adsorption quantity were 72.50% and 5.80 mg/g, respectively, when P‐Mt was sintered at 600°C. While sintering temperature was higher than 700°C, its adsorption capacity to Cr 3+ was damped because crystal shape and lamellar structure of P‐Mt were significantly changed. It demonstrates that 600°C was a better sintering temperature at which P‐Mt could efficiently remove Cr 3+ in tanning waste water. Moreover, the problem of easily aggregation and difficult recycle in liquid with Nano‐Mt powder was solved according to this method.