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Coral-like WO3/BiVO4 photoanode constructed via morphology and facet engineering for antibiotic wastewater detoxification and hydrogen recovery

Chi, Zexu ; Zhao, Jingyun ; Zhang, Yi ; Yu, Han LU and Yu, Hongbing (2022) In Chemical Engineering Journal 428.
Abstract

Morphology and facet engineering have been proved efficient strategies to prepare high-performance photoelectrochemical (PEC) materials. WO3/BiVO4 heterojunction photoanodes with different morphologies were prepared by simply controlling the amount of electrodeposited charge. The coral-like WO3/BiVO4 photoanode with the orientation growth of {110} and {011} active facets of BiVO4 exhibited the optimal PEC performance due to significantly enhanced separation and transfer of photogenerated charge carriers, while the exposure of {−121} facets showed negative effects. 4.71 mA·cm−2 and 2.9 mA·cm−2 of photocurrent densities were obtained for sulfite and water... (More)

Morphology and facet engineering have been proved efficient strategies to prepare high-performance photoelectrochemical (PEC) materials. WO3/BiVO4 heterojunction photoanodes with different morphologies were prepared by simply controlling the amount of electrodeposited charge. The coral-like WO3/BiVO4 photoanode with the orientation growth of {110} and {011} active facets of BiVO4 exhibited the optimal PEC performance due to significantly enhanced separation and transfer of photogenerated charge carriers, while the exposure of {−121} facets showed negative effects. 4.71 mA·cm−2 and 2.9 mA·cm−2 of photocurrent densities were obtained for sulfite and water oxidation, respectively, superior to most reported results. Subsequently, a photoelectrochemical-chlorine (PEC-Cl) system was constructed for antibiotic wastewater detoxification with hydrogen recovery. The analysis results indicated that the system can quickly and effectively remove sulfamethoxazole and reduce its toxicity concurrent with high hydrogen yield. The reactive chlorine species (RCS), especially Cl2·− and ClO·, dominated the sulfamethoxazole removal. Possible degradation pathways of sulfamethoxazole were also elucidated.

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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Antibiotic detoxification, Hydrogen energy recovery, Morphology and facet engineering, WO/BiVO photoanode
in
Chemical Engineering Journal
volume
428
article number
131817
publisher
Elsevier
external identifiers
  • scopus:85112799128
ISSN
1385-8947
DOI
10.1016/j.cej.2021.131817
language
English
LU publication?
yes
id
65d54fbc-a9bb-44b4-81f7-15ce6947615c
date added to LUP
2022-12-28 13:01:52
date last changed
2022-12-28 13:01:52
@article{65d54fbc-a9bb-44b4-81f7-15ce6947615c,
  abstract     = {{<p>Morphology and facet engineering have been proved efficient strategies to prepare high-performance photoelectrochemical (PEC) materials. WO<sub>3</sub>/BiVO<sub>4</sub> heterojunction photoanodes with different morphologies were prepared by simply controlling the amount of electrodeposited charge. The coral-like WO<sub>3</sub>/BiVO<sub>4</sub> photoanode with the orientation growth of {110} and {011} active facets of BiVO<sub>4</sub> exhibited the optimal PEC performance due to significantly enhanced separation and transfer of photogenerated charge carriers, while the exposure of {−121} facets showed negative effects. 4.71 mA·cm<sup>−2</sup> and 2.9 mA·cm<sup>−2</sup> of photocurrent densities were obtained for sulfite and water oxidation, respectively, superior to most reported results. Subsequently, a photoelectrochemical-chlorine (PEC-Cl) system was constructed for antibiotic wastewater detoxification with hydrogen recovery. The analysis results indicated that the system can quickly and effectively remove sulfamethoxazole and reduce its toxicity concurrent with high hydrogen yield. The reactive chlorine species (RCS), especially Cl<sub>2</sub>·<sup>−</sup> and ClO·, dominated the sulfamethoxazole removal. Possible degradation pathways of sulfamethoxazole were also elucidated.</p>}},
  author       = {{Chi, Zexu and Zhao, Jingyun and Zhang, Yi and Yu, Han and Yu, Hongbing}},
  issn         = {{1385-8947}},
  keywords     = {{Antibiotic detoxification; Hydrogen energy recovery; Morphology and facet engineering; WO/BiVO photoanode}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Chemical Engineering Journal}},
  title        = {{Coral-like WO<sub>3</sub>/BiVO<sub>4</sub> photoanode constructed via morphology and facet engineering for antibiotic wastewater detoxification and hydrogen recovery}},
  url          = {{http://dx.doi.org/10.1016/j.cej.2021.131817}},
  doi          = {{10.1016/j.cej.2021.131817}},
  volume       = {{428}},
  year         = {{2022}},
}