Issue 13, 2020

The catalytic degradation of nitrobenzene by the Cu–Co–Fe-LDH through activated oxygen under ambient conditions

Abstract

Efficient and low-cost catalysts for catalytic wet air oxidation (CWAO) under ambient conditions are of great significance for the degradation of hydrophobic organic contaminants. In this study, four LDH catalysts were prepared and their catalytic performance was studied by the degradation of nitrobenzene. The CuCoFe-LDH shows the best catalytic activity with an NB removal efficiency of 41.2%. The CuCoFe-LDH exhibited a typical layer structure, with a specific surface area of 167.32 m2 g−1, and Cu2+, Co2+ and Fe3+ were evenly dispersed on the crystal. The NB removal efficiency was increased by 12.5% through adding formic acid. After five recycling processes, the NB removal efficiency was 18.9% because 3.8 mg g−1 of Co was leached out of the LDH. In the CWAO process, H2O2, ˙OH, ˙O2 and 1O2 were successfully formed through activated oxygen by the CuCoFe-LDH catalyst under ambient conditions. This work further broadens the application scope of layered double hydroxides (LDHs) in the degradation of organic pollutants by CWAO under ambient conditions.

Graphical abstract: The catalytic degradation of nitrobenzene by the Cu–Co–Fe-LDH through activated oxygen under ambient conditions

Article information

Article type
Paper
Submitted
27 Way 2019
Accepted
27 Qun 2020
First published
27 Qun 2020

Dalton Trans., 2020,49, 3999-4011

The catalytic degradation of nitrobenzene by the Cu–Co–Fe-LDH through activated oxygen under ambient conditions

S. Wang, J. Zhu, S. Zhang, X. Zhang, F. Ge and Y. Xu, Dalton Trans., 2020, 49, 3999 DOI: 10.1039/C9DT03794B

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