Recyclable self-floating A-GUN-coated foam as effective visible-light-driven photocatalyst for inactivation of Microcystis aeruginosa

Gongduan Fan; Junkai Zhang; Jiajun Zhan; Jing Luo; Jiuyang Lin; Fangshu Qu; Banghao Du; Dingsheng Tang; Binghan Xie; Zhongsen Yan

doi:10.1016/j.jhazmat.2021.126407

Recyclable self-floating A-GUN-coated foam as effective visible-light-driven photocatalyst for inactivation of Microcystis aeruginosa

J Hazard Mater. 2021 Oct 5:419:126407. doi: 10.1016/j.jhazmat.2021.126407. Epub 2021 Jun 15.

Authors

Gongduan Fan¹, Junkai Zhang², Jiajun Zhan², Jing Luo³, Jiuyang Lin⁴, Fangshu Qu⁵, Banghao Du², Dingsheng Tang⁶, Binghan Xie⁷, Zhongsen Yan⁸

Affiliations

¹ College of Civil Engineering, Fuzhou University, 350116 Fujian, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, China; Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, 350002 Fujian, China.
² College of Civil Engineering, Fuzhou University, 350116 Fujian, China.
³ Fujian Jinhuang Environmental Sci-Tech Co. Ltd., 350002 Fujian, China.
⁴ Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, School of Environment and Resources, Fuzhou University, Fuzhou 350116, China.
⁵ Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Guangzhou University, Guangzhou 510006, China.
⁶ CCCC First Highway Engineering Group Xiamen Co., Ltd., Xiamen 361021, China.
⁷ School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China.
⁸ College of Civil Engineering, Fuzhou University, 350116 Fujian, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, 350002 Fujian, China; Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, 350002 Fujian, China. Electronic address: Zhongsen.yan@fzu.edu.cn.

PMID: 34175707
DOI: 10.1016/j.jhazmat.2021.126407

Abstract

In this work, a recyclable self-floating A-GUN-coated (Ag/AgCl@g-C₃N₄@UIO-66(NH₂)-coated) foam was fabricated for effective inactivation of Microcystis aeruginosa (M. aeruginosa) under visible light. The floating photocatalyst was able to inactivate 98% of M. aeruginosa within 180 min under the visible-light irrigation, and the floating photocatalyst exhibited a stable performance in various conditions. Moreover, the inactivation efficiency can still maintain nearly 92% after five times recycle experiments, showing excellent photocatalytic stability. Furthermore, effects of A-GUN/SMF floating catalyst on the physiological properties, cellular organics, and algal functional groups of M. aeruginosa were studied. The floating photocatalyst can not only make full use of excellent photocatalytic activities of A-GUN nanocomposite, but also promote contact between catalyst and algae, and realize the effective recovery of the photocatalyst. Finally, possible photocatalytic inactivation mechanisms of algae were obtained, which provides references for removing cyanobacteria blooms in real water bodies.

Keywords: Coating; Melamine foam; Microcystis aeruginosa; Recyclable; Self-floating photocatalyst; Visible-light-driven.

Publication types

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

MeSH terms

Catalysis
Cyanobacteria*
Light
Microcystis*
Nanocomposites*