METHOD FOR PRODUCING A HYDROGEN-DETECTION SENSOR AND RESULTING SENSOR

摘要

A method is provided for producing a visual hydrogen sensor and to a sensor produced in this manner, the sensor allowing the presence of hydrogen gas in a medium to be detected by the naked eye as a result of a change of colour in the sensor. The method involves the deposition of thin porous layers of oxides that do not absorb visible light in their completely oxidised state which become coloured when they are partially reduced. This deposition is carried out using vapour phase deposition (PVD) in a glancing angle configuration (GLAD). The method also involves the preparation of a solution of an active metal precursor capable of dissociating the hydrogen molecule and a carrier vector and the deposition of this solution on the oxide layer in order to incorporate a minimum quantity of active metal within the pores of the oxide layer in the form of nanoparticles.

主权项

1. Method for producing a hydrogen-detection sensor, characterized in that it comprises the following stages:
Stage 1: deposition of an active oxide on a substrate using physical vapour deposition (PVD) in glancing angle configuration (GLAD) to form a porous layer of said oxide; Stage 2: preparation of a solution of a precursor compound of an active metal; Stage 3: deposition of the solution prepared in stage 2 on the surface of the porous layer of oxide prepared in stage 1; Stage 4: inclusion of the active metal precursor in the pores of the oxide layer prepared in stage 1, in addition to decomposition of the metal precursor using heat treatment, or, using photochemical treatment.