Surface Molecular Functionalization of Unusual Phase Metal Nanomaterials for Highly Efficient Electrochemical Carbon Dioxide Reduction under Industry-Relevant Current Density

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Article number2106766
Journal / PublicationSmall
Volume18
Issue number11
Online published20 Jan 2022
Publication statusPublished - 17 Mar 2022

Abstract

The electrochemical carbon dioxide reduction reaction (CO2RR) provides a sustainable strategy to relieve global warming and achieve carbon neutrality. However, the practical application of CO2RR is still limited by the poor selectivity and low current density. Here, the surface molecular functionalization of unusual phase metal nanomaterials for high-performance CO2RR under industry-relevant current density is reported. It is observed that 5-mercapto-1-methyltetrazole (MMT)-modified 4H/face-centered cubic (fcc) gold (Au) nanorods demonstrate greatly enhanced CO2RR performance than original oleylamine (OAm)-capped 4H/fcc Au nanorods in both an H-type cell and flow cell. Significantly, MMT-modified 4H/fcc Au nanorods deliver an excellent carbon monoxide selectivity of 95.6% under the industry-relevant current density of 200 mA cm−2. Density functional theory calculations reveal distinct electronic modulations by surface ligands, in which MMT improves while OAm suppresses the surface electroactivity of 4H/fcc Au nanorods. Furthermore, this method can be extended to various MMT derivatives and conventional fcc Au nanostructures in boosting CO2RR performance.

Research Area(s)

  • carbon dioxide reduction reaction, electrocatalysis, metal nanomaterials, surface molecular functionalization, unusual phase, ELECTROCATALYTIC CO2 REDUCTION, GOLD NANOPARTICLES, ELECTROREDUCTION, CATALYST, COPPER, NANOCRYSTALS, ENHANCEMENT, SELECTIVITY, INSIGHTS, DEFECT

Citation Format(s)

Surface Molecular Functionalization of Unusual Phase Metal Nanomaterials for Highly Efficient Electrochemical Carbon Dioxide Reduction under Industry-Relevant Current Density. / Wang, Juan; Yu, Jinli; Sun, Mingzi et al.
In: Small, Vol. 18, No. 11, 2106766, 17.03.2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review