Electroreduction of CO₂ on Au(310)@Cu High‐index Facets

Liang, Liang ; Feng, Quanchen ; Wang, Xingli ; Hübner, Jessica ; Gernert, Ulrich ; Heggen, Marc ; Wu, Longfei ; Hellmann, Tim ; Hofmann, Jan P. ; Strasser, Peter (2023)
Electroreduction of CO₂ on Au(310)@Cu High‐index Facets.
In: Angewandte Chemie International Edition, 2023, 62 (12)
doi: 10.26083/tuprints-00023703
Article, Secondary publication, Publisher's Version

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Item Type:

Article

Type of entry:

Secondary publication

Title:

Electroreduction of CO₂ on Au(310)@Cu High‐index Facets

Language:

English

Date:

26 May 2023

Place of Publication:

Darmstadt

Year of primary publication:

2023

Publisher:

Wiley-VCH

Journal or Publication Title:

Angewandte Chemie International Edition

Volume of the journal:

Issue Number:

Collation:

5 Seiten

DOI:

10.26083/tuprints-00023703

Corresponding Links:

Publisher-DOI

Origin:

Secondary publication DeepGreen

Abstract:

The chemical selectivity and faradaic efficiency of high‐index Cu facets for the CO₂ reduction reaction (CO₂RR) is investigated. More specifically, shape‐controlled nanoparticles enclosed by Cu {hk0} facets are fabricated using Cu multilayer deposition at three distinct layer thicknesses on the surface facets of Au truncated ditetragonal nanoprisms (Au DTPs). Au DTPs are shapes enclosed by 12 high‐index {310} facets. Facet angle analysis confirms DTP geometry. Elemental mapping analysis shows Cu surface layers are uniformly distributed on the Au {310} facets of the DTPs. The 7 nm Au@Cu DTPs high‐index {hk0} facets exhibit a CH₄ : CO product ratio of almost 10 : 1 compared to a 1 : 1 ratio for the reference 7 nm Au@Cu nanoparticles (NPs). Operando Fourier transform infrared spectroscopy spectra disclose reactive adsorbed *CO as the main intermediate, whereas CO stripping experiments reveal the high‐index facets enhance the *CO formation followed by rapid desorption or hydrogenation.

Alternative Abstract:

Alternative Abstract

Language

Au(310)@Cu truncated ditetragonal prisms (DTPs) enhance the activity and selectivity for CO₂ electromethanation. Elemental mapping analysis shows Cu surface layers are uniformly distributed on the Au {310} facets of the DTPs. Operando Fourier transform infrared spectra show reactive adsorbed *CO as the main intermediate. CO stripping experiments reveal the high-index facets enhance the *CO formation followed by rapid desorption or hydrogenation.

English

Uncontrolled Keywords:

Electromethanation, High-Index Cu Facets, Operando Fourier Transform Infrared Spectroscopy

Status:

Publisher's Version

URN:

urn:nbn:de:tuda-tuprints-237032

Classification DDC:

500 Science and mathematics > 540 Chemistry
600 Technology, medicine, applied sciences > 660 Chemical engineering

Divisions:

11 Department of Materials and Earth Sciences > Material Science > Surface Science

Date Deposited: