Filter tip for selectively reducing ammonia in cigarette smoke and preparation method thereof

The invention discloses a filter tip for selectively reducing ammonia in cigarette smoke and a preparation method thereof. The filter tip comprises a filter stick and filter stick forming paper wrapping the filter stick and bonded with the filter stick, the filter stick comprises a non-feeding filter stick part and a feeding filter stick part, and the non-feeding filter stick part is formed by rolling a common filter element; the feeding filter stick part is formed by rolling a filter element containing an additive; the additive is obtained by reacting a graphite-phase carbon nitride materialwith a methanol solution of ionic liquid. The filter tip disclosed by the invention is non-toxic and harmless and has good thermal stability and chemical stability; the reduction efficiency of ammoniain cigarette smoke is relatively high; the preparation method of the filter tip is simple and easy to obtain, is convenient for industrial popularization, is suitable for large-batch production, andalso has a good antibacteri