Roughness induced wettability amplification of novel copper molybdate-branched CuO nanorod arrays by non-aqueous solution method

作者：Tang, Chunmei; Wang, Hongli; Hong, Yue; Xu, Wei; Shi, Qian; Liu, Zhongwu^*

来源：Materials Letters, 2021, 300: 130260.

DOI：10.1016/j.matlet.2021.130260

• Nanocomposites
• Functional
• CuO nanorod
• Copper molybdate
• Superwicking
• Reversible wettability

A CuO/copper molybdate (labeled as CMO) dendritic structure with amplified wettability is successfully synthesized by a non-aqueous solution method. CuO nanorods are firstly prepared by thermal oxidation of Cu film on Si substrate. By thermal evaporation of Mo foils, monocrystalline CMO branches are formed via the deposited MoOx vapor on CuO nanorods. This morphology induced roughness amplifies the wettability of CuO nanorods, realizing reversible superwicking and almost superhydrophobic properties with increased reversible water contact angle ranges. This facile method may promote the preparation and application of similar metal molybdates or heterostructures.