Issue 7, 2024

Ruthenium confined within hollow spherical carbon nitride as an efficient catalyst for triggering peroxymonosulfate

Abstract

Acetaminophen (ACT) has been extensively used nowadays as an effective drug for treating fever and pain, but refractory ACT released into aquatic environments can hardly be eliminated by ordinary approaches, causing a serious threat to the ecological environment. Herein, a new catalyst of metallic Ru confined within porous hollow spherical carbon nitride (Ru-hsCN) was fabricated for triggering peroxymonosulfate (PMS) and then degrading ACT in solutions. In the Ru-hsCN catalyst, highly dispersed Ru species were immobilized on the hsCN matrix by forming Ru–N bonds. The catalyst of 0.34Ru-hsCN with optimal Ru loading completely removed ACT within 5 min via PMS activation, and the reaction rate reached up to 0.497 min−1. The contrast sample of 0.34Ru-hsCN-imp with Ru aggregation only showed 34.4% of ACT removal in 20 min. It was worth noting that the rate constant of 0.34Ru-hsCN was 18 times higher than that of 0.34Ru-hsCN-imp (0.027 min−1) in the PMS induced ACT degradation. In addition, the 0.34Ru-hsCN/PMS system showed a wide pH working range, satisfactory durability and good tolerance to inorganic anions and cations, where Cl had a significantly positive effect. Further investigations unveiled that the reactive oxygen species including SO4˙, OH, O2˙ and 1O2 were produced in the 0.34Ru-hsCN/PMS system, and singlet oxygen (1O2) was the predominant species which actuated ACT degradation.

Graphical abstract: Ruthenium confined within hollow spherical carbon nitride as an efficient catalyst for triggering peroxymonosulfate

Supplementary files

Article information

Article type
Paper
Submitted
27 фев 2024
Accepted
09 май 2024
First published
10 май 2024

Environ. Sci.: Nano, 2024,11, 2894-2905

Ruthenium confined within hollow spherical carbon nitride as an efficient catalyst for triggering peroxymonosulfate

Y. Yin, S. Tian, B. Hu, A. H. Asif, S. Cui, S. Wang and H. Sun, Environ. Sci.: Nano, 2024, 11, 2894 DOI: 10.1039/D4EN00155A

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