Issue 42, 2021

Self-photoreduced Ag0-doped Ag(i)–organic frameworks with efficient visible-light-driven photocatalytic performance

Abstract

To investigate the facile synthesis strategy for MOF-based plasmonic photocatalysts, an Ag(I)–organic framework [Ag3(psa)(4,4′-bpy)3]·OH·2CH3OH·2H2O (JLNU-91) was prepared by employing phenylsuccinic acid (H2psa) and 4,4′-bipyridine (4,4′-bpy) under room temperature. Under the irradiation of UV light, the separated Ag(I) sites in the framework can be reduced to metallic Ag0, producing a series of Ag0-doped JLNU-91/x. The photocatalytic experiments indicate that the JLNU-91/x samples display improved photocatalytic activities for the degradation of methyl orange (MO) and the optimal JLNU-91/1 has a 2.2 times higher degradation kinetic constant than pure JLNU-91. The photocurrent responses and EIS plots demonstrate that the SPR effect of the self-reduced Ag0 promotes the separation of photoinduced electron–hole pairs. Moreover, the electron spin resonance (ESR) spectra and capture experiments reveal that O2−, ˙OH and the holes play important roles in the photodegradation of MO. This work brings a new insight into the development of MOF-based plasmonic photocatalysts.

Graphical abstract: Self-photoreduced Ag0-doped Ag(i)–organic frameworks with efficient visible-light-driven photocatalytic performance

Supplementary files

Article information

Article type
Paper
Submitted
22 авг 2021
Accepted
18 сен 2021
First published
20 сен 2021

CrystEngComm, 2021,23, 7496-7501

Self-photoreduced Ag0-doped Ag(I)–organic frameworks with efficient visible-light-driven photocatalytic performance

B. Liu, M. Lv, W. Jiang, B. Gao, Y. Li, S. Zhou, D. Wang, C. Liu and G. Che, CrystEngComm, 2021, 23, 7496 DOI: 10.1039/D1CE01133B

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