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

Guoyuan Zheng; Caihong Wu; Jilin Wang; Shuyi Mo; Zhengguang Zou; Bing Zhou; Fei Long

doi:10.1186/s11671-019-3112-x

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

Nanoscale Res Lett. 2019 Aug 16;14(1):281. doi: 10.1186/s11671-019-3112-x.

Authors

Guoyuan Zheng^{1

2}, Caihong Wu^{2

3}, Jilin Wang^{4

5}, Shuyi Mo^{1

2}, Zhengguang Zou^{1

2}, Bing Zhou^{1

2}, Fei Long^{6

7}

Affiliations

¹ Key Laboratory of New Processing Technology for Nonferrous Metals and Materials of Ministry of Education, Guilin University of Technology, Guilin, 541004, China.
² Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin, 541004, China.
³ Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, Guilin University of Technology, Guilin, 541004, China.
⁴ Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin, 541004, China. jilinwang@glut.edu.cn.
⁵ Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, Guilin University of Technology, Guilin, 541004, China. jilinwang@glut.edu.cn.
⁶ Key Laboratory of New Processing Technology for Nonferrous Metals and Materials of Ministry of Education, Guilin University of Technology, Guilin, 541004, China. longf@glut.edu.cn.
⁷ Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin, 541004, China. longf@glut.edu.cn.

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.

Keywords: Langmuir model; Potential adsorbent; Space-confined; γ-AlO(OH)/MgAl-LDH.

Grants and funding

51672052/National Natural Science Foundation of China