Anchoring Sn-Containing High-Entropy Alloy PtFeCoNiCuSn on SnO 2 for Improving Acetone Detection Ability

O. Moreover, it demonstrated stable long-term stability, with no significant response degradation (σ = 0.056) observed over a 63-day continuous test. The enhanced performance is attributed to the synergistic effects of the HEA's multielement composition and strong metal-support interaction, which strengthens electronic interaction and the activation of surface oxygen species. This study provides a framework for enhancing the interaction between HEAs and semiconductor metal oxides to further improve the gas-sensing properties of the latter.