%0 Online Multimedia %A Li, Qianqian %A Deng, Wenjie %A Li, Chuanhao %A Sun, Qingyun %A Huang, Fangzhi %A Zhao, Yan %A Li, Shikuo %D 2018 %T High-Flux Oil/Water Separation with Interfacial Capillary Effect in Switchable Superwetting Cu(OH)2@ZIF‑8 Nanowire Membranes %U https://acs.figshare.com/articles/media/High-Flux_Oil_Water_Separation_with_Interfacial_Capillary_Effect_in_Switchable_Superwetting_Cu_OH_sub_2_sub_ZIF_8_Nanowire_Membranes/7302365 %R 10.1021/acsami.8b13983.s003 %2 https://acs.figshare.com/ndownloader/files/13488860 %K 162 nm exhibits %K heavy-metal ions removal %K ZIF %K 15 μ m %K -8 %K core %K Interfacial Capillary Effect %K efficiency %K separation %K CA %K nanowire %K superwetting membranes %K Cu %K surface %K water contact angle %X Highly ordered architectures with roughness and porous surface are the key challenges toward developing smart superwetting membranes. We prepared switchable superwetting Cu­(OH)2@ZIF-8 core/shell nanowire membranes for high-flux oil/water separation as well as simultaneous heavy-metal ions removal in one step. The well-defined Cu­(OH)2@ZIF-8 core/shell nanowire grown on copper mesh with average length of ca. 15 μm and diameter of ca. 162 nm exhibits high water contact angle (CA) of ca. 153 ± 0.6°. After modified by ethanol, the membrane holds the reverse superwettability with oil (dichloromethane as an example) CA of ca. 155 ± 0.8° underwater. The separation efficiencies of the membranes are higher than that of 97.2% with a remarkable flux rate higher than 90 000 L m–2 h–1 for the immiscible oil/water mixture. And the removal efficiency for Cr3+ ions at 10 ppb can arrive at 99.2 wt % in the toluene-in-water emulsion. The high performances of the smart superwetting membranes can be attributed to the interfacial capillary effects of the hierarchical Cu­(OH)2@ZIF-8 core/shell nanostructures. This work may provide a new insight into the design of smart superwetting surfaces for oil/water separation and target adsorption in one step. %I ACS Publications