General synthesis strategy of ZrO 2 nanofilms with few-atom layered thickness for boosting triethylamine detection.

ZrO 2 , a traditional inert transition metal oxide (TMO), can be prepared into ZrO 2 nanofilms (NFs) with a single-layer thickness of only 2.5 nm through the generally applicable two-dimensional TMO synthesis strategy reported by us, and has displayed remarkable sensitivity and selectivity properties for triethylamine gas detection.