Issue 40, 2021

Tunable metal–organic framework nanoarrays on carbon cloth constructed by a rational self-sacrificing template for efficient and robust oxygen evolution reactions

Abstract

Metal–organic frameworks (MOFs) are regarded as advanced materials for oxygen evolution reactions (OER) because of their large specific surface area, adjustable pore size and abundant intrinsic molecular/atomic metal active sites. However, their essential features, such as the organic-ligand-shielded metal centres and low conductivity, make their electrocatalytic potential far from being exploited. These undesired issues can be avoided by designing and constructing MOF nanoarrays (MOF NAs) on self-supporting and conductive substrates such as the carbon cloth. Transforming appropriate solid material nanoarrays into MOF NAs provides a possibility to unlock the bottleneck. Herein, we have successfully developed a general approach for the morphological and electronic modulation of Co/Ni-MOF-74 NAs with wall-like Co/Ni(OH)2 NAs as the self-sacrificing template. The wall- or spindle-like morphology of MOF-74 NAs was modulated by changing the dosage of ligand. As a result, Co/Ni-MOF-74 NAs displayed superior activity and stability to those of Co/Ni-MOF-74 prepared without the template. The Co0.5Ni0.5-MOF-74 NAs delivered a low overpotential of 244 mV at a current density of 10 mA cm−2 due to the high proportion of active high-valence Co(III) and Ni(III). The proposed strategy can be extended to obtain brick-like Ni-BDC NAs and needle-like Ni BTC MOF NAs on carbon cloth.

Graphical abstract: Tunable metal–organic framework nanoarrays on carbon cloth constructed by a rational self-sacrificing template for efficient and robust oxygen evolution reactions

Supplementary files

Article information

Article type
Paper
Submitted
03 авг 2021
Accepted
06 сен 2021
First published
06 сен 2021

CrystEngComm, 2021,23, 7090-7096

Tunable metal–organic framework nanoarrays on carbon cloth constructed by a rational self-sacrificing template for efficient and robust oxygen evolution reactions

C. Lin, X. He, H. Li, J. Zou, M. Que, J. Tian and Y. Qian, CrystEngComm, 2021, 23, 7090 DOI: 10.1039/D1CE01015H

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