What coating killed bacteria so far?

Question: What coating killed bacteria so far?
- Keywords:
  bacteria,
  coating,
  killed
Asked by 676heak36 to Kath on 13 Nov 2017.
- Kathryn Thomas answered on 13 Nov 2017:
  
  I haven’t actually managed to test the coatings on the bacteria yet, I’m doing that just before Christmas so we’ll see! I have made some coatings that killed human cells though by accident, they had iron in.

Question: What coating killed bacteria so far?