Weigang Chen, Chonghui Zhu, Mengmeng Xu, Xichao Mo and Minghui Yang*,
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Ternary Metal Nitride-Based Mesoporous Materials Loaded with Pt Nanoparticles for Electrochemical H2S Detection
Hydrogen sulfide (H2S) monitoring is essential due to its toxicity and importance as a signaling molecule. Here, we introduce a Pt nanoparticle-loaded Mo0.33W0.67N sensor engineered for trace H2S detection featuring nanoparticle clusters with a 10–50 nm pore structure. It demonstrates exceptional selectivity and sensitivity, reaching 0.21 μA/ppm with a detection limit as low as 50 ppb, and maintains robust stability over 3 months. Notably, it outperforms commercial Pt/C electrodes with enhanced sensing capabilities attributed to the unique properties of ternary metal nitrides. By integrating the advantages of binary nitrides with multivalent cations and a specialized crystal structure, the Mo0.33W0.67N substrate achieves strong Pt interactions and improved sensor performance. This study highlights the potential of ternary metal nitride-based sensors for high-precision long-term H2S monitoring in environmental applications.
期刊介绍：
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.
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