Volume 2, 2024

One-dimensional nanotube of a metal–organic framework boosts charge separation and photocatalytic hydrogen evolution from water: synthesis and underlying understanding

Abstract

One-dimensional (1D) nanostructured inorganic semiconductors have been extensively investigated for efficiently promoting their photocatalytic performances, but it still remains unclear for metal–organic framework (MOF)-based photocatalysis. Herein we present the synthesis 1D Mn-TBAPy MOF nanotubes (denoted as Mn-TBAPy-NT) and give the first demonstration of the marked ability of the 1D nanotube structure to promote charge separation of MOFs relative to that in the Mn-TBAPy single crystal (denoted as Mn-TBAPy-SC), a feature proposed to result from the effect of strain on the nanotubes. As specifically determined using transient absorption (TA) spectroscopy, Mn-TBAPy-NT exhibits a long-lived internal charge-separated (ICS) state (255.6 ns), longer than that for Mn-TBAPy-SC (4.6 ns) and a feature apparently responsible for its over 30-fold promoted hydrogen evolution with a rate of 203.5 μmol h−1 (ca. 10.2 mmol h−1 gcat−1) under visible light and a benchmark apparent quantum efficiency (AQE), of 11.7% at 420 ± 10 nm, among MOF-type photocatalysts. Our results open a new avenue for developing highly efficient MOF-based photocatalysts.

Graphical abstract: One-dimensional nanotube of a metal–organic framework boosts charge separation and photocatalytic hydrogen evolution from water: synthesis and underlying understanding

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Article information

Article type
Communication
Submitted
11 Janv. 2024
Accepted
28 Janv. 2024
First published
31 Janv. 2024
This article is Open Access
Creative Commons BY-NC license

EES. Catal., 2024,2, 789-794

One-dimensional nanotube of a metal–organic framework boosts charge separation and photocatalytic hydrogen evolution from water: synthesis and underlying understanding

L. Liu, Y. Xiao, X. Guo, W. Fan, N. Yang, C. Jia, S. Jin and F. Zhang, EES. Catal., 2024, 2, 789 DOI: 10.1039/D4EY00007B

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