Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Promoted photocatalytic degradation and detoxication performance for norfloxacin on Z-scheme phosphate-doped BiVO4/graphene quantum dots/P-doped g-C3N4

Wang, Meiyang ; Yu, Han LU ; Wang, Pan ; Chi, Zexu ; Zhang, Zhenzong ; Dong, Binbin ; Dong, Heng ; Yu, Kai and Yu, Hongbing (2021) In Separation and Purification Technology 274.
Abstract

A novel kind of Z-scheme ternary heterojunctions phosphate-doped BiVO4/graphene quantum dots/P-doped g-C3N4 (BVP/GQDs/PCN) were fabricated for the visible light degradation of norfloxacin (NOR), a typical antibiotic. Compared with binary type-II heterojunction phosphate-doped BiVO4/PCN (BVP/PCN), Z-scheme BVP/GQDs/PCN exhibited promoted interfacial charge transfer efficiency and broadened visible light response range, endowing them with excellent photodegradation activity and mineralization ability in NOR degradation. A high NOR degradation rate of 86.3% with a removal rate of total organic carbon (TOC) of 55.8% can be achieved over BVP/GQDs/PCN for 120 min visible light irradiation, which is... (More)

A novel kind of Z-scheme ternary heterojunctions phosphate-doped BiVO4/graphene quantum dots/P-doped g-C3N4 (BVP/GQDs/PCN) were fabricated for the visible light degradation of norfloxacin (NOR), a typical antibiotic. Compared with binary type-II heterojunction phosphate-doped BiVO4/PCN (BVP/PCN), Z-scheme BVP/GQDs/PCN exhibited promoted interfacial charge transfer efficiency and broadened visible light response range, endowing them with excellent photodegradation activity and mineralization ability in NOR degradation. A high NOR degradation rate of 86.3% with a removal rate of total organic carbon (TOC) of 55.8% can be achieved over BVP/GQDs/PCN for 120 min visible light irradiation, which is an excellent performance compared with ever reported similar photocatalysts. In particular, because of the enhanced redox ability of photogenerated charges and the generation of multiple active species (eg. [rad]OH and [rad]O2−) over Z-scheme photocatalytic system, the accumulation of highly toxic degradation intermediates was greatly inhibited, and a better detoxication performance was obtained compared to PCN and BVP/PCN. This work may shed light on the inhibition of highly toxic degradation intermediates of antibiotics by regulating the charge transfer mechanism, photocatalytic active species, and the degradation pathway of antibiotics.

(Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Degradation intermediate, Norfloxacin, Photocatalytic degradation, Toxicity evaluation, Z-scheme charge transfer
in
Separation and Purification Technology
volume
274
article number
118692
publisher
Elsevier
external identifiers
  • scopus:85108061011
ISSN
1383-5866
DOI
10.1016/j.seppur.2021.118692
language
English
LU publication?
yes
id
c7461de1-64b5-45a9-b654-9f7d2295a152
date added to LUP
2021-08-11 10:32:58
date last changed
2022-04-27 03:03:59
@article{c7461de1-64b5-45a9-b654-9f7d2295a152,
  abstract     = {{<p>A novel kind of Z-scheme ternary heterojunctions phosphate-doped BiVO<sub>4</sub>/graphene quantum dots/P-doped g-C<sub>3</sub>N<sub>4</sub> (BVP/GQDs/PCN) were fabricated for the visible light degradation of norfloxacin (NOR), a typical antibiotic. Compared with binary type-II heterojunction phosphate-doped BiVO<sub>4</sub>/PCN (BVP/PCN), Z-scheme BVP/GQDs/PCN exhibited promoted interfacial charge transfer efficiency and broadened visible light response range, endowing them with excellent photodegradation activity and mineralization ability in NOR degradation. A high NOR degradation rate of 86.3% with a removal rate of total organic carbon (TOC) of 55.8% can be achieved over BVP/GQDs/PCN for 120 min visible light irradiation, which is an excellent performance compared with ever reported similar photocatalysts. In particular, because of the enhanced redox ability of photogenerated charges and the generation of multiple active species (eg. <sup>[rad]</sup>OH and <sup>[rad]</sup>O<sub>2</sub><sup>−</sup>) over Z-scheme photocatalytic system, the accumulation of highly toxic degradation intermediates was greatly inhibited, and a better detoxication performance was obtained compared to PCN and BVP/PCN. This work may shed light on the inhibition of highly toxic degradation intermediates of antibiotics by regulating the charge transfer mechanism, photocatalytic active species, and the degradation pathway of antibiotics.</p>}},
  author       = {{Wang, Meiyang and Yu, Han and Wang, Pan and Chi, Zexu and Zhang, Zhenzong and Dong, Binbin and Dong, Heng and Yu, Kai and Yu, Hongbing}},
  issn         = {{1383-5866}},
  keywords     = {{Degradation intermediate; Norfloxacin; Photocatalytic degradation; Toxicity evaluation; Z-scheme charge transfer}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Separation and Purification Technology}},
  title        = {{Promoted photocatalytic degradation and detoxication performance for norfloxacin on Z-scheme phosphate-doped BiVO<sub>4</sub>/graphene quantum dots/P-doped g-C<sub>3</sub>N<sub>4</sub>}},
  url          = {{http://dx.doi.org/10.1016/j.seppur.2021.118692}},
  doi          = {{10.1016/j.seppur.2021.118692}},
  volume       = {{274}},
  year         = {{2021}},
}