Floating metal phthalocyanine@polyacrylonitrile nanofibers for peroxymonosulfate activation: Synergistic photothermal effects and highly efficient flowing wastewater treatment

Fang Zhang; Jiayu Xin; Xi Wu; Jie Liu; Luyao Niu; Dan Wang; Xinghua Li; Changlu Shao; Xiaowei Li; Yichun Liu

doi:10.1016/j.jhazmat.2023.132228

Floating metal phthalocyanine@polyacrylonitrile nanofibers for peroxymonosulfate activation: Synergistic photothermal effects and highly efficient flowing wastewater treatment

J Hazard Mater. 2023 Oct 5:459:132228. doi: 10.1016/j.jhazmat.2023.132228. Epub 2023 Aug 7.

Authors

Fang Zhang¹, Jiayu Xin¹, Xi Wu¹, Jie Liu¹, Luyao Niu¹, Dan Wang², Xinghua Li³, Changlu Shao⁴, Xiaowei Li¹, Yichun Liu¹

Affiliations

¹ Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China.
² College of information technology, Jilin Agricultural University, 2888 Xincheng Street, Changchun 130118, People's Republic of China.
³ Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China. Electronic address: lixh781@nenu.edu.cn.
⁴ Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, People's Republic of China. Electronic address: clshao@nenu.edu.cn.

PMID: 37557048
DOI: 10.1016/j.jhazmat.2023.132228

Abstract

Highly efficient floating photocatalysis has potential applications in organic pollutant treatment but remains limited by low degradation efficiency in practical applications. By introducing the photothermal effect into a peroxymonosulfate (PMS) coupled photocatalysis system, tetracycline hydrochloride (TCH) degradation could be significantly enhanced using floating metal phthalocyanine@polyacrylonitrile (MPc@PAN) nanofiber mats. MPc@PAN nanofibers with different metal centers showed similar photothermal conversion performance but different activation energies for PMS activation, resulting in metal-center-dependent synergistic photothermal effects, i.e., light-enhanced dominated, thermal-enhanced dominated, and conjointly light-thermal dominated mechanisms. The porous structures and floating ability of the FePc@PAN nanofibers provided a fast mass transfer process, with higher solar energy utilization and superior photothermal conversion performance than the FePc nanopowders. Meanwhile, the FePc@PAN nanofibers showed excellent TCH removal stability within 10 cycles (>92%) and extremely low Fe ion leaching (<0.055 mg/L) in a dual-channel flowing wastewater treatment system. This work provides new insight into PMS activation via photothermal effects for environmental remediation.

Keywords: Electrospun nanofibers; Floating photocatalysis; Metal phthalocyanine; Peroxymonosulfate activation; Photothermal effect.