Palladium is the most prominent material in both scientific and industrial research on gas storage, purification, detection, and catalysis due to its unique properties as a catalyst and hydrogen absorber. Advancing the dynamic optical phenomena of palladium reacting with hydrogen, transduction of the gas-matter reaction into light-matter interaction is attempted to visualize the dynamic surface chemistry and reaction behaviors. The simple geometry of the metal-dielectric-metal structure, Fabry–Perot etalon, is employed for a colorimetric reactor, to display the catalytic reaction of the exposed gas via water-film/bubble formation at the dielectric/palladium interface. The adsorption/desorption behavior and catalytic reaction of hydrogen and oxygen on the palladium surface display highly repeatable and dramatic color changes based on two distinct water formation trends: the foggy effect by water bubbles and the whiteout effect by water film formation. Simulations and experiments demonstrate the robustness of the proposed Fabry–Perot etalon as an excellent platform for monitoring the opto-physical phenomena driven by heterogeneous catalysis.

由于其作为催化剂和氢吸收剂的独特性能，钯是气体储存、纯化、检测和催化的科学和工业研究中最重要的材料。为了推进钯与氢反应的动态光学现象，尝试将气体-物质反应转化为光-物质相互作用，以可视化动态表面化学和反应行为。金属-电介质-金属结构的简单几何结构法布里-珀罗标准具用于比色反应器，通过电介质/钯界面上的水膜/气泡形成来显示暴露气体的催化反应。基于两种不同的水形成趋势，氢和氧在钯表面上的吸附/解吸行为和催化反应显示出高度可重复和显着的颜色变化：水气泡的雾化效果和水膜形成的白化效果。模拟和实验证明了所提出的法布里-珀罗标准具作为监测多相催化驱动的光物理现象的优秀平台的鲁棒性。