We present measurements of the nucleation, growth and evolution of single hydrogen nanobubbles containing zeptomoles of molecular hydrogen and likely originating from a single catalytic site. These bubbles are measured using nanoscale platinum and gold meniscus-contacted electrodes, whose picoliter volumes facilitate rapid supersaturation and evolution of bubbles. Observed periodic current transients were utilized to understand the nucleation, growth, coalescence, and evolution of single nanobubbles at different overpotentials and pHs. This provides a novel platform to understand factors governing bubble nucleation and evolution. These measurements offer exciting possibilities to connect experiments with computational models in important energy applications.

我们目前的测量，包含分子氢的zeptomoles的单个氢纳米气泡的成核，生长和演变，可能起源于单个催化位点。这些气泡是使用纳米级铂和金弯月面接触电极测量的，其皮升体积有助于气泡快速过饱和和放出。利用观察到的周期性电流瞬变来了解在不同的超电势和pH值下单个纳米气泡的形核，生长，聚结和演化。这提供了一个新颖的平台来了解控制气泡成核和演化的因素。这些测量为在重要的能源应用中将实验与计算模型相连接提供了令人兴奋的可能性。