Work

Modification of copper surface with palladium/platinum via galvanic displacement in ionic liquid for enhancing electrochemical nitrate reduction activities

Year: 2025

Type: article

Abstract: Galvanic displacement in an ionic liquid was utilized to deposit palladium (Pd) or platinum (Pt) onto a copper (Cu) surface. Compared to water and conventional organic solvents, the relatively high viscosity of ionic liquids offers a distinct advantage in controlling the modification process, as the reduced mass transfer leads to a slower and more manageable displacement rate. This control is crucial; excessive deposition of Pd or Pt on the Cu surface can result in diminished, rather than enhanced, electrochemical nitrate reduction activity. Cu surfaces modified with an appropriate amount of Pd or Pt exhibited improved electrochemical performance toward both nitrate (NO3−) and nitrite (NO2−) reduction. This enhancement is likely attributed to the increased porosity induced during the galvanic displacement process, as well as synergistic effects between Pd/Pt and Cu. Overall, galvanic displacement in ionic liquids represents a practical and effective strategy for the synthesis of Cu‐based electrocatalysts for electrochemical nitrate reduction.

Source: Journal of the Chinese Chemical Society

DOI: 10.1002/jccs.70072

Authors: Pei‐Ying Liu, Yen‐Ju Lee, Pao‐Kuei Su, Chien‐Liang Lee, Chia‐Lin Yu, Po‐Yu Chen

Institutions: Kaohsiung Medical University, National Kaohsiung University of Science and Technology, National Sun Yat-sen University, Kaohsiung Medical University Chung-Ho Memorial Hospital

Language: English

Topic: Electrocatalysts for Energy Conversion

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,470