You can try Gotaq master mix for PCR, then send it for sequencing, blast the result in NCBI blastn and get the identity of the bacteria.

You don't need anything special. You just need specific primer for

Clostridium difficile and any PCR kit will give you good enough result.

You can find a set of primer in the paper Article Design of Species-Specific Primers to Identify 13 Species of...

You can search for more specific primer if you wish. You don't need any sequencing.

Dear Maria Elisabetta Michelangeli

you can use primers for some housekeeping gene or genes for the toxin production, very well described in the paper below:

Article Multilocus Sequence Typing of Clostridium difficile

Another option (in the absence of MALDI-TOF in your lab) is to use a rapid latex agglutination test (e.g. from Oxoid).

I am sure that after couple of C. difficile positive cultures, you will be able to recognize C. difficile on selective agar based on the typical phenotype without a need of PCR confirmation.

Good luck,

Marcela