A multifunctional non‐fluorinated flame retardant superhydrophobic 3‐D porous material for highly selective oil spill treatment and removal of dyes

Abstract

The environment and global healthcare are at risk from oily wastewater accumulation and spills. Hence, porous sponge materials are widely sought for remedial oil cleanups. Materials with superhydrophobic and photocatalytic characteristics are implemented for extensive use besides oil–water separation, self‐cleaning, and removal of dyes. Regardless of the various upsides, few materials display both of these features jointly. Most nanomaterial photocatalysts are susceptible to the action of ultraviolet (UV) light irradiation, which often inhibits their hydrophobicity. Here in this work, a photocatalyst such as ZnO was coated on a porous 3‐D melamine sponge (MS). To preserve the hydrophobicity without sacrificing the photocatalytic behavior, ZnO coated melamine sponge was modified with transparent polydimethylsiloxane (PDMS) to obtain MS/ZnO/PDMS. The obtained superhydrophobic photocatalytic sponge exhibits exceptional oil adsorption capacity, superior stability even under severe conditions and the ability to remove organic dyes. Remarkably, the sponge exhibits outstanding compressive strength and fire resistance properties, indicating the possible utilization in a prolonged practical execution. As a result, this technique might pave the way for the creation of a comprehensive design for an improved superhydrophobic photocatalytic sponge with high stability and recyclability.

Hierarchical 0D CuO Wrapped by Petal-like 2D ZnO: A Strategic Approach of Superhydrophobic Melamine Sponge toward Wastewater Treatment

“…The MS/CuO/ZnO S was immersed in this solution, transferred to an autoclave, and subjected to heating for 18 h at 90 °C. The sponge was dried at 60 °C for 5 h ultimately resulting in the development of a superhydrophobic MS/CuO/ZnO . A preparation outline of the MS/CuO/ZnO is presented in Figure .…”

Superhydrophilic Photothermal-Responsive CuO@MXene Nanofibrous Membrane with Inherent Biofouling Resistance for Treating Complex Oily Wastewater

“…In ancient days, the ocean stood as an inaccessible barrier, but with the strides of technology, it has evolved into a vital arena for global commerce and a catalyst for human advancement. However, despite this development, the ocean has borne the weight of numerous catastrophic oil pollutions. , These pose a serious threat to both human health and the marine environment. In light of this, membrane separation technology, particularly that using electrospun nanofibrous membrane (NFM), is widely applied for oil/water separation due to its adjustable pore size, high surface-to-volume ratio, and significant nanofiber alignments. − Despite its benefits, membrane fouling remains an “Achilles’ heel” in the filtration process, limiting the membrane’s lifespan.…”

“…However, despite this development, the ocean has borne the weight of numerous catastrophic oil pollutions. 1,2 These pose a serious threat to both human health and the marine environment. In light of this, membrane separation technology, particularly that using electrospun nanofibrous membrane (NFM), is widely applied for oil/water separation due to its adjustable pore size, high surface-to-volume ratio, and significant nanofiber alignments.…”

Magnetic‐field‐induced Fe3O4@CNTs/PES/SPSf composite membrane for efficient removal of methylene blue by adsorption and catalytic degradation

“…Most dyes are fairly stable to heat, light and oxidants, so the efficient removal and degradation of organic pollutants becomes a key issue in the current research. 1 Numerous technologies have been employed in the purification of dye wastewater, including adsorption, membrane separation, advanced oxidation technology and biodegradation technology. [2][3][4] Thereinto, advanced oxidation technology can meet the requirements of the reaction under the conditions of normal temperature and pressure and simple equipment because the reaction operation is simple.…”