Highly Sensitive and Stable CeLaCuO/Ni-BTC MOF-Based Humidity Sensor for Plant Monitoring.

ABSTRACT: Herein, we report a high-performance humidity sensor based on oxygen-vacancy-rich CeLaCuO integrated with a porous Ni-BTC metal-organic framework (MOF). Compared with the single CeLaCuO and Ni-BTC sensors, the CeLaCuO/Ni-BTC composite sensor exhibits a higher response value (24% @ 32% relative humidity (RH)), lower hysteresis (0.465%RH), faster response/recovery time (24.5/47.8 s), and enhanced long-term stability (<2.6% over 60 days). Moreover, it achieves a high sensitivity of S ≈ 1.35/%RH with excellent linearity (R² = 0.9868) across 11-63% RH and demonstrates a very low temperature cross-sensitivity between 25 and 100 °C (<0.35%). These improved performance properties are attributed to abundant oxygen vacancies (Ov) in the CeLaCuO structure that provide active

SUBMITTER: Rodrigues J 

PROVIDER: S-EPMC12723648 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature