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Updated: May 11, 2025
The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
D-Orbital-Modulated Ruthenium Embedded within Functionalized Hollow MXene Networks for Enhanced Hydrazine-Assisted
Thanh Hai Nguyen1, Duy Thanh Tran1, Deepanshu Malhotra1
1Department of Nano Convergence Engineering, Jeonbuk National University, Jeonju, Jeonbuk, 54896, Republic of Korea.
Abstract:
Electrochemical green hydrogen production via water splitting is an attractive and sustainable pathway; however, the sluggish kinetics of anodic oxygen evolution reaction is still a critical challenge. In this study, an effective electrocatalyst engineering approach is demonstrated by preparing an innovative hybrid of ruthenium d-orbitals-regulated nanoclusters embedding within functionalized hollow Ti3C2 MXene networks (Ru0.91Ni0.09-N/O-Ti3C2) to promote the hydrazine-assisted hydrogen production. A specific charge redistribution is revealed, locally concentrating at interfaces derived from stable Ru(Ni)-N/O-Ti coordination and d-p orbital hybridization. The charge transfer effect from Ni to Ru within Ru0.91Ni0.09 structure and Ru0.91Ni0.09 to N/O-Ti3C2 tailors electronic features of Ru sites to enable reasonable adsorption/desorption toward reactant intermediates. The Ru0.91Ni0.09-N/O-Ti3C2 requires an overpotential of only 29.3 mV for cathodic hydrogen evolution and a low potential of -29.9 mV for anodic hydrazine oxidation to reach 10 mA cm-2, showing excellent stability. The hydrazine-assisted hydrogen production system based on Ru0.91Ni0.09-N/O-Ti3C2 electrodes delivers small cell voltages of 0.02 V at 10 mA cm-2 and 0.92 V at industrial current level of 1.0 A cm-2. This work may open a new electrocatalysis strategy from lab scale to industry for robust and efficient green hydrogen production.
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