Premium
Reconstructed Bismuth‐Based Metal−Organic Framework Nanofibers for Selective CO 2 ‐to‐Formate Conversion: Morphology Engineering
Author(s) -
Ying Yulong,
Khezri Bahareh,
Kosina Jiri,
Pumera Martin
Publication year - 2021
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202101122
Subject(s) - formate , bismuth , formic acid , electrocatalyst , metal organic framework , materials science , chemical engineering , nanofiber , selectivity , electrochemistry , nanotechnology , electrode , inorganic chemistry , catalysis , chemistry , organic chemistry , metallurgy , adsorption , engineering
Electrochemical reduction of carbon dioxide (ERCO 2 ) is an attractive and sustainable approach to close the carbon loop. Formic acid is a high‐value and readily collectible liquid product. However, the current reaction selectivity remains unsatisfactory. In this study, the bismuth‐containing metal−organic framework CAU‐17, with morphological variants of hexagonal prisms (CAU‐17‐hp) and nanofibers (CAU‐17‐fiber), is prepared at room temperature through a wet‐chemical approach and employed as the electrocatalyst for highly selective CO 2 ‐to‐formate conversion. An H 3 BTC‐mediated morphology reconstruction is systematically investigated and further used to build a CAU‐17‐fiber hierarchical structure. The as‐prepared CAU‐17‐fiber_400 electrodes give the best electrocatalytic performance in selective and efficient formate production with FE HCOO− of 96.4 % and j COOH− of 20.4 mA cm −2 at −0.9 V RHE . This work provides a new mild approach for synthesis and morphology engineering of CAU‐17 and demonstrates the efficacy of morphology engineering in regulating the accessible surface area and promoting the activity of MOF‐based materials for ERCO 2 .