2D-2D growth of NiFe LDH nanoflakes on montmorillonite for cationic and anionic dye adsorption performance

De Bin Jiang; Chuan Jing; Yunsong Yuan; Li Feng; Xiaoying Liu; Fan Dong; Biqing Dong; Yu Xin Zhang

doi:10.1016/j.jcis.2019.01.022

2D-2D growth of NiFe LDH nanoflakes on montmorillonite for cationic and anionic dye adsorption performance

J Colloid Interface Sci. 2019 Mar 22:540:398-409. doi: 10.1016/j.jcis.2019.01.022. Epub 2019 Jan 14.

Authors

De Bin Jiang¹, Chuan Jing¹, Yunsong Yuan², Li Feng³, Xiaoying Liu⁴, Fan Dong⁵, Biqing Dong⁶, Yu Xin Zhang⁷

Affiliations

¹ State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China.
² College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400044, China. Electronic address: yuan_ys@cqu.edu.cn.
³ State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China; Chongqing Academy of Environmental Science, Chongqing 401147, China.
⁴ Engineering Research Center for Waste Oil Recovery Technology and Equipment of Ministry of Education, College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, China.
⁵ Research Center for Environmental Science & Technology, Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 611731, China.
⁶ Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, China.
⁷ State Key Laboratory of Mechanical Transmissions, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China. Electronic address: zhangyuxin@cqu.edu.cn.

PMID: 30665166
DOI: 10.1016/j.jcis.2019.01.022

Abstract

NiFe layered double hydroxides nanoflakes decorated montmorillonite (MMT@NiFe LDH) was successfully prepared by a one-pot hydrothermal method. The 2D-2D growth MMT@NiFe LDH was utilized as an effective adsorbent for removal of anionic dye of methyl orange (MO) and cationic dye of methylene blue (MB). The mole ratio of Ni²⁺/Fe³⁺ could quite influence the interlayer spacing, surface area per unit charge and the ultrathin hexagonal laminated morphology of NiFe LDH decorated on the surface of MMT. Various characterization techniques were conducted to identify it, such as XRD, FT-IR, TG-DTA, BET, XPS and SEM. Under the optimal conditions, the Langmuir-fitted maximum adsorption capacities for MO and MB are 108.80 mg g^-1 and 99.18 mg g^-1, respectively. Adsorption kinetics for MO and MB are both verified to be fit in with pseudo-second-order model. This work suggests a facile pathway to synthesize desirable bifunctional adsorbent for cationic and anionic dyes, which provides the potential application for the actual wastewater purification.

Keywords: Adsorbent; Methyl orange; Methylene blue; Montmorillonite; NiFe LDH; Sewage disposal.