TEA-assisted hydro-thermal synthesis of layered Zn hydroxide nitrate adsorbent and its rapid adsorption for MO

A novel layered Zn hydroxide nitrate adsorbent (LZH-NO3) for rapid adsorption of MO was synthesized by TEA (triethanolamine)-assisted hydro-thermal synthesis technology and characterized by the SEM, XRD, FTIR, BET, solid-state UV/vis spectra and TG. The maximum adsorption capability was 529.3 mg/g. The adsorption process reached equilibrium rapidly only 10 min. The pseudo-second-order kinetic equation fitted the adsorption process. The equilibrium adsorption isotherm data followed the Langmuir model. The regeneration ability was achieved using 0.5% NaOH solution. The results showed that LZH-NO3 could be employed as an efficient adsorbent for the removal of MO from dye waste water.