Publication date: 28th August 2024
Electrochemical nitrogen reduction reaction (NRR) is an environmentally friendly alternative strategy to the high energy consumed and high carbon released Haber–Bosch process for NH3 production. Nevertheless, it is limited by a low ammonia yield and faradaic efficiency (FE) due to (i) the complexity associated with the breaking of the N≡N bond and (ii) the competing hydrogen evolution reaction. The primary challenge for NRR is the development of highly efficient electrocatalysts which will be able to tackle these hindrances effectively and convert N2 to NH3 under benign conditions, with minimal energy input. This presentation will dive into the concept of exploring surface engineering strategies of 2D materials such as defect engineering and heterojunction formation that can enhance the catalytic activity of the NRR process. We will showcase two main examples: the electrochemical dealloying of exfoliated 2D-PdBi2 nanoflakes into palladium hydride (PdHx, x ≤ 2) in addition to the formation of the MoS2/rGO heterostructure which significantly enhance NRR and dwell on the mechanisms. The applied design ideas, synthetic methods, and catalytic performance of the 2D catalysts will be described with the fabrication of mechanisms to inspire more practical design strategies for NRR electrocatalysts.
National Science Centre (NCN) Poland SONATA 19 Grant no. 2023/51/D/ST11/02588
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