Synchronous oil/water separation and wastewater treatment on a copper-oxide-coated mesh

Abstract

An integrated multifunctional copper-oxide-coated mesh was designed via facile immersing and burning methods, which manifests synchronous oil/water separation and wastewater treatment.

Multifunctional materials with controllable superwettability for oil–water separation and removal of pollutants: Design, emerging applications, and challenges

“…Under the drive of photocatalysis, the prepared SHL−UWSOB copper net can restore the oil‐contaminated copper mesh under visible light illumination. Liu et al [ 170 ] reported SHL−UWSOB copper‐oxide‐coated mesh surfaces for synchronous oil–water separation and wastewater treatment. The copper oxide on the surface of the mesh improved the oil–water separation efficiency and catalytic degradation efficiencies for organic pollutants to 99%.…”

“…A-TiO 2 -coated sc-PLA membranes WCA (in air) ≈ 0°TiO 2 nanoparticles decompose oil pollution [166] OCA (under water) > 150°B iOCl/TiO 2 -decorated membrane WCA (in air) ≈ 0°TiO 2 nanoparticles decompose tetracycline, chlortetracycline, oxytetracycline, and demeclocycline [167] OCA (under water) ≈ 151°G elatin-based aerogel WCA (in air) ≈ 0°GTP aerogels realize dye degradation [168] OCA (in air) ≈ 0°O CA (under water) > 150°W O 3 @Cu(OH) 2 nanorod array copper mesh WCA (in air) ≈ 0°WO 3 nanoparticles decompose oil pollution [169] OCA (under water) > 150°c opper-oxide-coated mesh WCA (in air) ≈ 0°CuO nanoparticles decompose MB [170] OCA (under water) ≈ 157°C u@Cu 2 O cubic film WCA (in air) ≈ 153°Cu@Cu 2 O degrade MB [171] OCA (in air) ≈ 0°P rotein fibers WCA (in air) ≈ 14°Photo-Fenton reactions decompose MB [172] OCA (under water) > 150°S SM/UiO-66-NH 2 /CMn WCA (in air) < 5°UiO-66 decompose MB [173] OCA (under water) > 150°A bbreviations: GTP, gelatin/TiO 2 /PEI; MB, methylene blue; MO, methyl orange; OCA, oil contact angle; PLA, polylactide; SHL−UWSOB, superhydrophilic and underwater superoleophobic; SSM, stainless steel mesh; WCA, water contact angle.…”

Bionic superhydrophobic surfaces based on topography of copper oxides

“…In contrast to separate only light oil or heavy oil, the CuOplated stainless steel net prepared by Zhou et al [80] could separate both light and heavy oil with a separation efficiency up to 99.9% after 10 times of super-humid conversion or separation (Figure 8a). In spite of single oil-water separation performance, the SHSs based on copper-oxide topography also possessed photocatalytic properties, which could provide a new insight for separating pure water from industrial mixtures [81,82].…”

Superhydrophilic–superhydrophobic integrated system based on copper mesh for continuous and efficient oil–water separation

“…5–7 Among various oil–water separation techniques, membrane-based separation technology is generally regarded as one of the most promising methods, which has gained significant attention in recent years due to its affordability, small space requirement, and scalability. 8–13…”

“…[5][6][7] Among various oil-water separation techniques, membranebased separation technology is generally regarded as one of the most promising methods, which has gained signicant attention in recent years due to its affordability, small space requirement, and scalability. [8][9][10][11][12][13] The self-cleaning property of lotus leaves, as described by the ancient Chinese phrase "Out of the mud but not stained", is a common feature found in superhydrophobic surfaces. The superhydrophobic property of lotus leaves arises from the synergistic effects of low surface energy wax and micro/nano hierarchical structures present on the leaf surface.…”