Space-Confined Effect One-Pot Synthesis of γ-AlO(OH)/MgAl-LDH Heterostructures with Excellent Adsorption Performance

• Main Authors: Guoyuan Zheng, Caihong Wu, Jilin Wang, Shuyi Mo, Zhengguang Zou, Bing Zhou, Fei Long
• Format: Article
• Language: English
• Published: SpringerOpen 2019-08-01
• Series: Nanoscale Research Letters
• Subjects: γ-AlO(OH)/MgAl-LDH; Space-confined; Langmuir model; Potential adsorbent
• Online Access: http://link.springer.com/article/10.1186/s11671-019-3112-x

Abstract Herein, γ-AlO(OH) as an inorganic was successfully inserted into MgAl-LDH layer by a one-pot synthesis, the composite as an adsorbent for removing methyl orange (MO) from wastewater. The structure and adsorption performance of γ-AlO(OH)/MgAl-LDH were characterized. The research shows that the expansion (003) plane and the hydroxyl active site of γ-AlO(OH)/MgAl-LDH can promote adsorption capacity and adsorption kinetics, respectively. Therefore, γ-AlO(OH)/MgAl-LDH exhibits a super adsorption performance, which completely adsorbs MO at the concentration of 1000 mg g−1. In addition, the maximum adsorption capacity of MO was 4681.40 mg g−1 according to the Langmuir model. These results indicate that γ-AlO(OH)/MgAl-LDH is a potential adsorbent for the removal of organic dyes in water.