Issue 19, 2024

Atomically dispersed Pd on ZrO2 for efficient nitrite electroreduction to ammonia

Abstract

Electrochemical conversion of NO2 to NH3 (NO2RR) provides an appealing route to enable effective wastewater treatment and sustainable NH3 production. Herein, we report that atomically dispersed Pd on ZrO2 as substrate (Pd1/ZrO2) serves as an effective and durable NO2RR catalyst, showing a maximum NH3-faradaic efficiency of 96.75% and corresponding NH3 yield rate of 438.06 μmol h−1 cm−2 at −0.6 V. Combining experiments with theoretical calculations revealed that Pd1 incorporation enables the construction of unique Zr–Pd1–O motifs that can effectively activate NO2, optimize the intermediate adsorption energies and suppress the competing H2 evolution, resulting in greatly enhanced NO2RR activity and selectivity.

Graphical abstract: Atomically dispersed Pd on ZrO2 for efficient nitrite electroreduction to ammonia

Supplementary files

Article information

Article type
Research Article
Submitted
26 Jun 2024
Accepted
07 Aug 2024
First published
07 Aug 2024

Inorg. Chem. Front., 2024,11, 6326-6332

Atomically dispersed Pd on ZrO2 for efficient nitrite electroreduction to ammonia

W. Du, Z. Sun, C. Qiang, K. Chen and K. Chu, Inorg. Chem. Front., 2024, 11, 6326 DOI: 10.1039/D4QI01609B

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