"Sample without a bang: a reusable qualitative and semi-quantitative hydrogen detection foil for school lessons" by Malte Petersen.
Further information and the possibility of obtaining the detection foil free of charge can be found here: Detection foil
Abstract:
Students encounter hydrogen at numerous points in the chemistry curriculum, whether as a reaction product in the reaction of base metals with acids, of (earth) alkali metals with water or in the electrolysis of water. However, the classic detection method using the oxyhydrogen gas sample often proves unreliable in school practice, as the "bang" is often only weak and requires a sufficient amount of hydrogen. In order to simplify the detection of hydrogen in schools, this article presents the production and application of a hydrogen-sensitive detection foil. It enables qualitative and semi-quantitative detection through a clear blue colouration and can be regenerated by reaction with (atmospheric) oxygen, making it reusable. Its potential is demonstrated using various school experiments.