Issue 19, 2023

Mussel-inspired PDA/Ag nanocomposite catalyst for highly-efficient Cr(vi) removal via visible light-induced reduction and absorption

Abstract

Toxic pollutants containing Cr(VI) are unavoidable in industrial production. Photoreduction is commonly performed during the removal of Cr(VI) by reducing Cr(VI) to Cr(III). In this work, polydopamine/Ag-nanoparticles (PDA/AgNPs) were synthesized under mild conditions through the self-polymerization of PDA and the in situ reduction of Ag+ to Ag nanoparticles via PDA. The relevant structural characterizations were confirmed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The electrochemical characterizations were performed through photoluminescence (PL) spectroscopy and electrochemical impedance spectroscopy (EIS) performance. PDA/AgNPs-2 (2.5 mg) catalysts showed outstanding catalytic ability with a 98% removal ratio after 60 min illumination. Unique adhesion behavior and the good electrical conductivity of PDA/AgNPs led to the excellent removal performance of Cr(VI) via absorption and photo-induced reduction. The PDA/AgNPs were acceptably reused after 7 cycles. This work provides a feasible reference to synthesize photocatalyst materials for removing hazardous Cr(VI).

Graphical abstract: Mussel-inspired PDA/Ag nanocomposite catalyst for highly-efficient Cr(vi) removal via visible light-induced reduction and absorption

Supplementary files

Article information

Article type
Paper
Submitted
09 Ақп. 2023
Accepted
14 Сәу. 2023
First published
15 Сәу. 2023

New J. Chem., 2023,47, 9066-9076

Mussel-inspired PDA/Ag nanocomposite catalyst for highly-efficient Cr(VI) removal via visible light-induced reduction and absorption

X. Lu, Z. Gao, G. Wang, S. Chen, Y. Gu, B. Yan and Q. Yang, New J. Chem., 2023, 47, 9066 DOI: 10.1039/D3NJ00622K

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