Wang Y, Zhang Z, Jian X, Zhao J, Yang L, Gao ZD, Song YY. Engineering hierarchical FeS
2/TiO
2 nanotubes on Ti mesh as a tailorable flow-through catalyst belt for all-day-active degradation of organic pollutants and pathogens.
JOURNAL OF HAZARDOUS MATERIALS 2022;
438:129501. [PMID:
35803193 DOI:
10.1016/j.jhazmat.2022.129501]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 06/15/2023]
Abstract
The increasing organic and microbiological pollutions in fresh water caused by human activities and industrial development have become a global concern nowadays. In this study, three-dimensional (3D) hierarchical FeS2/TiO2 structures with nanotube geometries were grown on a Ti mesh (M-TNTAs-FeS2). Benefitting from the abundant available reactive sites on the open 3D micro/nanoporous structures, excellent photocatalytic activity of FeS2/TiO2 heterostructure in solar light, and satisfactory Fenton activity of FeS2, the obtained M-TNTAs-FeS2 exhibits outstanding performance as an all-day-active catalyst. Importantly, flexible meshes can be easily tailored and enveloped into fluorinated ethylene propylene (FEP) pockets in a series as a flow-through belt for large-capacitance applications (998 L m-2 at a flow rate of 417 L m-2 h-1 for a four-pockets belt), as indicated by the degradation of azo dyes, antibiotics, pesticides, and pathogens. This study may inspire a new tailorable catalyst design for a promising point-of-use purification device.
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