Clinoptilolite mediated activation of peroxymonosulfate through spherical dispersion and oriented array of NiFe2O4: Upgrading synergy and performance

Chunquan Li; Shanshan Yang; Runze Bian; Ye Tan; Xiongbo Dong; Ningyuan Zhu; Xuwen He; Shuilin Zheng; Zhiming Sun

doi:10.1016/j.jhazmat.2020.124736

Clinoptilolite mediated activation of peroxymonosulfate through spherical dispersion and oriented array of NiFe₂O₄: Upgrading synergy and performance

J Hazard Mater. 2021 Apr 5:407:124736. doi: 10.1016/j.jhazmat.2020.124736. Epub 2020 Dec 3.

Authors

Chunquan Li¹, Shanshan Yang², Runze Bian³, Ye Tan³, Xiongbo Dong³, Ningyuan Zhu⁴, Xuwen He³, Shuilin Zheng³, Zhiming Sun⁵

Affiliations

¹ School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, PR China.
² School of Earth and Space Sciences, Peking University, Beijing 100871, PR China.
³ School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China.
⁴ Zigui Ecological Station for Three Gorges Dam Project, State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, Nanjing 210008, PR China.
⁵ School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, PR China. Electronic address: zhimingsun@cumtb.edu.cn.

PMID: 33341574
DOI: 10.1016/j.jhazmat.2020.124736

Abstract

Inspired by the features of both transition metal oxide and natural clinoptilolite (flaky structure with suitable pore diameter and open skeleton structure), we adopted a robust strategy by immobilization of nickel ferrite nanoparticles (NiFe₂O₄) on the clinoptilolite surface via typical citric acid combustion method. The hybrid catalyst exhibited enhanced peroxymonosulfate (PMS) activation efficiency and bisphenol A (BPA) degradation performance. Calculated by effective equivalent of NiFe₂O₄, it is found that the reaction rate constant (k) of NiFe₂O₄/clinoptilolite/PMS system (0.1859 min^-1) was 11.9 times higher than that of bare NiFe₂O₄/PMS system (0.0156 min^-1), which demonstrated that catalyst would be conjugated to PMS or contaminant efficiently and renders the rapid degradation and mineralization in the presence of clinoptilolite. After comprehensive characterization analysis and DFT simulations, natural mineral carrier effect (i.e. decreased crystalline size, increased oxygen vacancy content, etc.), abundant surface-bonded and structural hydroxyl groups as well as effective bonding with iron or nickel ions charged for the potential activation mechanism of PMS by NiFe₂O₄/clinoptilolite composite. And it is indicated that not only ^•OH and SO₄^•-, but also ¹O₂ was involved into series reactions. Overall, this study put forward a green and promising technology for high-toxic wastewater treatment.

Keywords: Bisphenol A; Clinoptilolite; DFT; NiFe(2)O(4); Peroxymonosulfate.

Publication types

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