(1. 青島理工大學 機械工程學院，青島 266033；2. 北京科技大學 材料科學與工程學院，北京 100083)
摘 要: 利用氫氟酸(HF)的調(diào)控作用，基于低溫(95 ℃)液相技術(shù)制備具有不同形貌和不同潤濕性能的微納米ZnO，研究氫氟酸對其形貌及潤濕性的影響。結(jié)果表明，隨著HF加入量的不斷增加，ZnO的形貌從“短棒”、“球形”、“花形”到“線形”發(fā)生變化，相應(yīng)表面的水接觸角越來越大；當在40 mL反應(yīng)溶液中加入400 μL 5％的HF時，ZnO的形貌變?yōu)榫哂屑{米亞結(jié)構(gòu)的“微球”形，其表面開始顯示出超疏水性。各種形貌ZnO表面在真空紫外光和暗室保存的循環(huán)作用下均具有疏水/超親水快速可逆改變特性
關(guān)鍵字: ZnO；HF；微觀形貌；潤濕性；液相技術(shù)
（1. School of Mechanical Engineering, Qingdao Technological University,Qingdao 266033, China;2. School of Materials Science and Engineering, University of Science andTechnology Beijing, Beijing 100083, China）
Abstract: Several kinds of micro-nano ZnO powders with different morphologies and wettabilities were prepared by low-temperature solution method, based on the control of hydrofluoric acid (HF) additives. The results reveal that both the morphology and the wettability change with the quantity of HF adding in the reaction solution; when the quantity of HF increases, the morphology of ZnO changes from “rod”, “sphere” and “flower” to “wire”, and the corresponding water contact angle increases. When 5% HF of 400 μL is added into the 40 mL reaction solution, the morphology of ZnO demonstrates a microsphere with sub-nanostructures, whose surface shows superhydrophobic properties. In addition, all the wettabilities of the ZnO powders with different structures can be reversibly switched circularly by alternation of VUV irradiation, dark storage
Key words: ZnO; HF; morphology; wettability; solution method; hydrofluoric acid
