Facile synthesis of polyoxometalate-modified metal organic frameworks for eliminating tetrabromobisphenol-A from water

Xiang Li; Suresh C Pillai; Lan Wei; Zhongzhen Liu; Lianxi Huang; Qing Huang; Xiaoshan Jia; Deyi Hou; Hocheol Song; Hailong Wang

doi:10.1016/j.jhazmat.2020.122946

Facile synthesis of polyoxometalate-modified metal organic frameworks for eliminating tetrabromobisphenol-A from water

J Hazard Mater. 2020 Nov 15:399:122946. doi: 10.1016/j.jhazmat.2020.122946. Epub 2020 Jun 11.

Authors

Xiang Li¹, Suresh C Pillai², Lan Wei¹, Zhongzhen Liu¹, Lianxi Huang¹, Qing Huang¹, Xiaoshan Jia³, Deyi Hou⁴, Hocheol Song⁵, Hailong Wang⁶

Affiliations

¹ Key Laboratory of Plant Nutrition and Fertilizer in South Region, Ministry of Agriculture, Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences, Guangzhou, Guangdong, 510640, China.
² Centre for Precision Engineering, Materials and Manufacturing Research & Nanotechnology and Bio-Engineering Research Division, Department of Environmental Science, Institute of Technology Sligo, Ash Lane, Sligo, Ireland.
³ School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510275, China.
⁴ School of Environment, Tsinghua University, Beijing, 100084, China.
⁵ Department of Environment and Energy, Sejong University, Seoul, 05006, Republic of Korea.
⁶ Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China; Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, Zhejiang, 311300, China. Electronic address: hailong.wang@fosu.edu.cn.

PMID: 32937701
DOI: 10.1016/j.jhazmat.2020.122946

Abstract

Removal of tetrabromobisphenol-A (TBBPA) from wastewater is of significance to protect the aquatic life. The present study reports the facile preparation of polyoxometalate-modified metal-organic framework (MOFs) materials for TBBPA removal from water. The polyoxometalate-modified MOFs exhibited significantly higher affinity towards TBBPA than the control MOFs. The experimental data were fitted with the Langmuir, Freundlich and Dubinin-Radushkevich models. The TBBPA adsorption onto modified MOFs fitted the pseudo-second-order kinetic model. The equilibrium adsorption isotherms showed that the adsorption of TBBPA can be fitted by the Langmuir model. The maximum adsorption capacity of adsorbent composites reached 3.65 mg/g, with 95 % removal of TBBPA. The thermodynamic parameters indicated that adsorption was spontaneous. A blue shift of phosphorus peaks obtained from XPS spectra implied the formation of intrinsic chemical bonding between TBBPA and MOFs composites. Moreover, response surface methodology was employed to characterize the TBBPA adsorption in the co-existence of different factors. BPA had strong competition for TBBPA adsorption in a wide range of pH, but not at the middle level of Ca²⁺ concentration. Polyoxometalate-modified MOFs can easily be recycled using a simple organic solvent washing. This study provides a novel strategy for developing cost effective adsorbents to remove TBBPA from contaminated water.

Keywords: Adsorption; PWA modified Cu-BTC; Response surface methods; TBBPA.

Publication types

Research Support, Non-U.S. Gov't