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The study aims to improve hydrogen detection technology by enhancing the sensing capabilities of Pd-based metal oxide sensors.

February 19, 2026ACS Sensors

Synergistically Boosting the Surface Reaction Dynamics by K ⁺ Interstitial Doping in Pd/WO ₃ Nanosheets for Robust Hydrogen Sensing

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The study aims to improve hydrogen detection technology by enhancing the sensing capabilities of Pd-based metal oxide sensors.
Synthesis of K+ interstitial doped Pd/WO3 nanosheets.
Characterization of sensing performance under various conditions.
Assessment of response times and sensitivity to hydrogen at low temperatures.
PdNP-K/WO3-15 showed a response of 1235.94 to 50 ppm H2 at 130 °C.
Synergistic effects from K+ doping increased electron density and oxygen vacancies.
Enhanced hydrogen desorption and reduced oxygen adsorption were observed.

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This research demonstrates enhanced hydrogen sensing in K+ doped Pd/WO3 nanosheets, suggesting improved safety for green hydrogen applications.

Wang et al. (2026) studied this question.

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This research demonstrates enhanced hydrogen sensing in K+ doped Pd/WO3 nanosheets, suggesting improved safety for green hydrogen applications.