Assembly of potassium niobate nanosheets/silver oxide composite films with good SERS performance towards crystal violet detection

A novel and uniform composite films consisted with potassium niobate nanosheets and Ag2O were facilely fabricated by electrostatic self-assembly technique combined with UV light irradiation. It is found that the composite films were an active SERS substrate for the detection of CV with low concentration. The strong synergetic interaction and the effective electron transfer between potassium niobate nanosheets and Ag2O were very profitable for the sensitive detection of CV with low concentration.238