Issue 7, 2024

Efficient photocatalytic degradation of ofloxacin by a polyimide/phosphate-doped porous coralline carbon nitride S-scheme heterojunction

Abstract

The establishment of a heterojunction between two semiconductors possessing compatible band structures holds significant promise for facilitating the separation and migration of photogenerated carriers, thereby engendering robust photooxidation–reduction capabilities. Herein, a novel S-scheme heterojunction material (PP-CCN), comprising polyimide (PI) and phosphate-doped porous coralline carbon nitride (P-CCN), was meticulously engineered via an in situ wet chemical synthesis approach. The sunlight photocatalytic degradation of ofloxacin in freshwater aquaculture wastewater achieved high efficiency, which was 22.22-fold and 3.61-fold higher than that of pure PI and P-CCN, respectively. The charge transfer mechanism within the S-scheme heterojunction was corroborated through in situ X-ray photoelectron spectroscopy, electron paramagnetic resonance, and theoretical calculations. Furthermore, the PP-CCN/solar photocatalytic system exhibited exceptional versatility across a broad spectrum of concentration gradients, pH conditions, mineralization capacities, and challenging ionic environments or water matrices. Subsequent assessments of reusability and degradation efficacy against 26 kinds of organic pollutants underscored its potential as an efficient treatment modality for multifarious pollution scenarios.

Graphical abstract: Efficient photocatalytic degradation of ofloxacin by a polyimide/phosphate-doped porous coralline carbon nitride S-scheme heterojunction

Supplementary files

Transparent peer review

To support increased transparency, we offer authors the option to publish the peer review history alongside their article.

View this article’s peer review history

Article information

Article type
Paper
Submitted
03 апр 2024
Accepted
25 май 2024
First published
28 май 2024

Environ. Sci.: Nano, 2024,11, 2978-2993

Efficient photocatalytic degradation of ofloxacin by a polyimide/phosphate-doped porous coralline carbon nitride S-scheme heterojunction

Y. Zeng, Y. Wang, X. Wang, K. Chen, P. Chen, Z. Xiao, Q. Zhang, W. Lv and G. Liu, Environ. Sci.: Nano, 2024, 11, 2978 DOI: 10.1039/D4EN00277F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements