Dual-function ZIF-8 membrane supported on alumina hollow fiber membrane for copper(II) removal

Metal–organic frameworks on versatile substrates

“…Porous alumina hollow fibers are selected as substrates to fabricate MOFs with their cost-efficiency, heat resistance, non-toxicity, and good chemical stability. 230–246 ZrCl 4 and H 2 BDC were first dissolved in deionized water and DMF at a molar ratio of metal salt/ligand/H 2 O/DMF of 1 : 1 : 1 : 500 and kept at 120 °C for three days. After that, a UiO-66 film was obtained on substrate Al 2 O 3 as depicted in Fig.…”

CelloZIFPaper: Cellulose-ZIF Hybrid Paper for Heavy Metal Removal and Electrochemical Sensing

“…In a recent study, ZIF-8 nanoparticles were in-situ grown onto electrospun polyacrylonitrile (PAN) nanofibers membrane (ZIF-8/PAN NF) via hot pressing [79]. ZIF-8 crystals were also produced on an alumina hollow fiber membrane via the in-situ solvothermal method and the layer-by-layer method (Table 2) [80]. This membrane fabrication method requires silanization of alumina with 2% of 3-(aminopropyl)triethoxysilane (APTES) solution using toluene which is toxic and harmful to the environment (Table 2) [80].…”

“…ZIF-8 crystals were also produced on an alumina hollow fiber membrane via the in-situ solvothermal method and the layer-by-layer method (Table 2) [80]. This membrane fabrication method requires silanization of alumina with 2% of 3-(aminopropyl)triethoxysilane (APTES) solution using toluene which is toxic and harmful to the environment (Table 2) [80]. In contrast, the membrane preparation methods proposed in our study are entirely water-mediated, rendering them simpler and more environmentally friendly than the one mentioned earlier.…”