OICC Press Iranian Journal of Catalysis 2345-4865 2 3 2024 02 03 NanoZnO as an efficient & reusable catalyst for the preparation of 1,4-DHPs via Hantzsch reaction EN Fatemeh Tamaddon Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran. Somayeh Moradi Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran. Journal Article 2024 02 03 Easily prepared nanoZnO was found to be as an efficient catalyst in the synthesis of 1,4-DHPs via four-component reaction of 1,3-dicarbonyls, aldehydes and ammonium carbonate in water at 60 °C. The prepared nanoZnO was characterized by XRD and FT-IR analysis, while the determined specific surface area of nano catalyst by BET method was 33 m2/g.