eprintid: 18551
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/85/51
datestamp: 2024-06-04 14:10:52
lastmod: 2024-06-04 14:10:52
status_changed: 2024-06-04 14:03:34
type: article
metadata_visibility: show
creators_name: Beheshti, M.
creators_name: Saeidi, M.
creators_name: Adel-Rastkhiz, M.
creators_name: Shahrestani, S.
creators_name: Zarrabi, A.
creators_name: Bai, J.
creators_name: Simchi, A.
creators_name: Akbarmolaie, S.
title: Efficient electrochemical CO2 conversion by cobalt-based metal organic frameworks modified by bimetallic gold-silver nanostructures
ispublished: pub
keywords: Binary alloys; Catalyst activity; Charge transfer; Cobalt; Efficiency; Electrocatalysts; Gold; Gold alloys; Metal-Organic Frameworks; Nanostructures; Organic polymers; Silver; Silver alloys; Stability, Bimetallics; CO 2 reduction; Cobalt-based; Electrochemicals; Faradaic efficiencies; Metalorganic frameworks (MOFs); Rapid growth; Reduction reaction; Silver nanostructures; ]+ catalyst, Carbon dioxide
note: cited By 1
abstract: The ongoing and rapid growth of atmospheric CO2 levels causes a crucial worldwide concern. Herein, an efficient electrocatalyst has been introduced for electrochemical CO2 reduction reaction (CO2RR) to address the stability issue of ZIF-67. The catalyst consists of gold and silver nanostructures electrodeposited on the surface of a cobalt-based metal-organic framework (Au-Ag@ZIF-67). The uniform distribution of the Au-Ag alloy without any agglomeration on ZIF-67 was confirmed through microscopic observations. After 13.3 h of CO2RR, the specific surface area of Au-Ag@ZIF-67 slightly decreased, whereas that of ZIF-67 declined drastically, indicating excellent structural stability of the Au-Ag alloy. Additionally, Au-Ag@ZIF-67/GCE revealed a faradaic efficiency of 53 and 38 for CO and H2, respectively. The enhanced CO2 absorption coupled with the effect of noble metal catalysts offered a current density of 16.4 mA cm�2 at �1 V (vs. RHE) with 91 Faradaic efficiency. The results indicate that ZIF-67 enhanced the adsorption capacity of CO2 molecules in comparison with the bare GCE. The combination of ZIF-67 with bimetallic Au-Ag nanostructures offers enhanced CO2 absorption and reduced charge transfer resistance, leading to improved catalytic activity and selectivity toward CO gas. The results suggest that the use of Au-Ag nanostructures provides superior catalytic activity compared to traditional catalysts, making this approach a promising development for CO2 gas elimination in the environment. © 2023 The Royal Society of Chemistry.
date: 2023
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85161500256&doi=10.1039%2fd3cy00373f&partnerID=40&md5=b76da346177fa8ebdb89d5b016c6faa1
id_number: 10.1039/d3cy00373f
full_text_status: none
publication: Catalysis Science and Technology
volume: 13
number: 12
pagerange: 3645-3654
refereed: TRUE
citation:   Beheshti, M. and Saeidi, M. and Adel-Rastkhiz, M. and Shahrestani, S. and Zarrabi, A. and Bai, J. and Simchi, A. and Akbarmolaie, S.  (2023) Efficient electrochemical CO2 conversion by cobalt-based metal organic frameworks modified by bimetallic gold-silver nanostructures.  Catalysis Science and Technology, 13 (12).  pp. 3645-3654.