Facile Synthesis of Ce-MOF for the Removal of Phosphate, Fluoride, and Arsenic

Lili Zhang; Decheng Mao; Yining Qu; Xiaohong Chen; Jindi Zhang; Mengyang Huang; Jiaqiang Wang

doi:10.3390/nano13233048

Facile Synthesis of Ce-MOF for the Removal of Phosphate, Fluoride, and Arsenic

Nanomaterials (Basel). 2023 Nov 29;13(23):3048. doi: 10.3390/nano13233048.

Authors

Lili Zhang¹, Decheng Mao², Yining Qu³, Xiaohong Chen⁴, Jindi Zhang¹, Mengyang Huang¹, Jiaqiang Wang^{1

3}

Affiliations

¹ School of Chemistry and Resources Engineering, Honghe University, Mengzi 661100, China.
² School of Materials and Energy, Yunnan University, Kunming 650091, China.
³ School of Chemical Sciences & Technology, Yunnan University, Kunming 650091, China.
⁴ Institute of International Rivers and Eco-Security, Yunnan University, Kunming 650091, China.

Abstract

Ce-MOF was synthesized by a solvothermal synthesis method and was used to simultaneously remove phosphate, fluoride and arsenic (V) from water by adsorption. Ce-MOF was characterized by a nitrogen adsorption-desorption isotherm, scanning electron microscopy, and infrared spectroscopy. The effects of initial concentration, adsorption time, adsorption temperature, pH value and adsorbent on the adsorption properties were investigated. A Langmuir isotherm model was used to fit the adsorption data, and the adsorption capacity of phosphate, fluoride, and arsenic (V) was calculated to be 41.2 mg·g^-1, 101.8 mg·g^-1 and 33.3 mg·g^-1, respectively. Compared with the existing commercially available CeO₂ and other MOFs, Ce-MOF has a much higher adsorption capacity. Furthermore, after two reuses, the performance of the adsorbent was almost unchanged, indicating it is a stable adsorbent and has good application potential in the field of wastewater treatment.

Keywords: Ce-MOF; adsorption; arsenic (V); fluoride; phosphate; wastewater.

Grants and funding

This research received financial support from Key Laboratory of Advanced Materials for Wastewater Treatment of Kunming.