Matrix nanocomposite sensing film for saw/baw based hydrogen sulphide sensor and method for making same

A method for preparing a matrix nanocomposite sensing film, comprising:

• synthesizing a matrix nanocomposite solution by incorporating at least one thiolated carbon nanotube into at least one conductive organic polymeric material, wherein said at least one thiolated carbon nanotube comprises a mercapto group and a functional group such as thioester;
• forming a gel film based on said polymeric matrix nanocomposite by depositing said solution on a surface of a SAW/BAW device by an additive process and/or a direct printing process;
• consolidating said thin gel film by thermal annealing and/or laser annealing under ambient conditions in order to obtain the stable chemical and functional H2S sensing solid film, wherein said thin sensing film interacts with the hydrogen sulphide at room temperature by means of dipole-dipole forces;
• and
• synthesizing said matrix nanocomposite by incorporating said at least one thiolated carbon nanotube into at least one ceramic nanocrystalline.