Flower-Shaped Mg₃Al1- xFex-CO₃ Layered Double Hydroxides Derived Adsorbents with Tunable Memory Effect for Environmental Remediation

Xinrui Zhong; Zhang Zhang; Tuantuan Zhou; Peng Lu; Jin Cheng; Sining Chen; Zhifei Shu; Yichen Hong; Qiang Wang; Ahmad Umar

doi:10.1166/jnn.2018.14339

Flower-Shaped Mg₃Al_{1- x}Fe_x-CO₃ Layered Double Hydroxides Derived Adsorbents with Tunable Memory Effect for Environmental Remediation

J Nanosci Nanotechnol. 2018 Apr 1;18(4):2609-2615. doi: 10.1166/jnn.2018.14339.

Authors

Affiliations

¹ College of Environmental Science and Engineering, Beijing Forestry University, Haidian District, Beijing 100083, P. R. China.
² School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.
³ Department of Chemistry, College of Science and Arts, Najran University, Najran-11001, Kingdom of Saudi Arabia.

PMID: 29442933
DOI: 10.1166/jnn.2018.14339

Abstract

Herein, flower-shaped ternary layered double hydroxides (LDHs) Mg3Al1-xFex-CO3 with tunable memory effect as promising adsorbents was developed for the removal of acid red 88 anionic dye. All the samples were prepared using a co-precipitation method and were thoroughly characterized using several analytical techniques. The influence of Fe/(Al + Fe) ratio on the memory effect and dye adsorption capacity of Mg3Al1-xFex-CO3 LDHs was evaluated. Among all samples, Mg3Fe0.1Al0.9CO3 LDH resulted in the best adsorption capacity of 2709 mg/g in the first cycle. Comparing to Mg3Al1-CO3 and Mg3Fe1-CO3 LDHs, it also showed much better cycling performance during 4 cycles at 30 °C and atmospheric pressure. The influence of regeneration temperature was also investigated and found that 400 °C exhibit best performance. The detailed studies demonstrated that the adsorption capacity of Mg3Al1-CO3 can be improved by partially replacing Al by Fe.