LDH-assisted growth of FeCo bimetal-MOF nanorods for electrocatalytic oxygen evolution

Metal-organic frameworks (MOFs) have emerged as alternative OER catalysts due to their easy regulation, such as in situ self-reconstruction from MOFs to metal hydroxides through alkaline hydrolysis. Herein, we demonstrate a facile strategy for the in situ transformation of FeCo layered double hydrox...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2022-09, Vol.12 (38), p.25112-25117
Main Authors: Tang, Lin, Cai, Minjuan, Zhang, Maosheng, Chen, Xi, Cai, Zhixiong
Format: Article
Language:English
Subjects:
Bimetals
Catalysts
Chemistry
Hydrothermal reactions
Hydroxides
Metal foams
Metal-organic frameworks
Nanorods
Oxygen evolution reactions
Reaction time
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Metal-organic frameworks (MOFs) have emerged as alternative OER catalysts due to their easy regulation, such as in situ self-reconstruction from MOFs to metal hydroxides through alkaline hydrolysis. Herein, we demonstrate a facile strategy for the in situ transformation of FeCo layered double hydroxide (FeCo-LDH) nanosheets into 1D spindle-shaped FeCo-MOFs for efficient OER. An optimized electrode of FeCo-MOF on a nickel foam (NF) was achieved by adjusting the addition of organic ligands and the reaction time in the hydrothermal reaction. Based on the unique 1D nanostructure and the cation regulation, the obtained FeCo-MOF exhibits a good catalytic performance toward the OER with a low overpotential of 475 mV at 100 mA cm −2 , a small Tafel slope of 121.8 mV dec −1 , and high long-term durability. This study provides a facile strategy for preparing bimetal-MOFs as catalysts for efficient OER. We demonstrate a strategy for transforming FeCo-LDH nanosheets into 1D FeCo-MOF nanorods in situ for efficient OER. This strategy solves the problem that MOFs are difficult to grow on conductive substrates under traditional synthesis conditions.
ISSN:2046-2069
2046-2069
DOI:10.1039/d2ra04871j