Nitrogenated Graphene Oxide-Decorated Metal Sulfides for Better Antifouling and Dye Removal

Abstract

Nitrogenated graphene oxide-decorated copper sulfide nanocomposites (Cu x S-NrGO, where x = 1 and 2) are designed to be incorporated in polysulfone (PSF) membranes for effective fouling resistance of PSF membranes and their dye removal capacity. The developed membranes possess more hydrophilicity and an enhancement in pure water flux (PWF). Also, the highest bovine serum albumin (BSA) rejection of 89% was observed when compared to membranes with pristine PSF (5 L/m 2 h PWF and 88% BSA rejection) and CuS-incorporated PSF membranes (14 L/m 2 h PWF and 83% BSA rejection) because of N doping and enhanced permeability. It is also found that the Cu x S-NrGO-incorporated PSF membranes exhibited a significantly higher fouling resistance, a larger permeate flux recovery ratio (FRR) of nearly 82%, and a congo red dye rejection of 93%. Cu x S-NrGO nanoparticles thus demonstrate the potential efficacy of enhancing the hydrophilicity, leading to a better flux, dye removal capacity, and antifouling capacity with a very high FRR value of 82% because of a strong interaction between the N-active sites of the NrGO, Cu x S, and polysulfone matrix, and negligible leaching of nanoparticles is observed.

Interfacial Assembly of 2D Graphene‐Derived Ion Channels for Water‐Based Green Energy Conversion

“…[ 159 ] In addition, nitrogenated GO‐modified copper sulfide composite is incorporated into polysulfone film to achieve high‐efficiency fouling resistance and dye removal capacity (Figure 13C). [ 160 ] The composite film shows obviously enhanced fouling resistance and owns a high congo red dye repulsion up to 93%. Notably, water‐based green energy conversion like osmotic energy conversion is usually confronted with pollution in water.…”

“…C) Antifouling of 2D-GDIC: nitrogenated GO-decorated metal sulfides film for antifouling and dye removal. Reproduced with permission [160]. Copyright 2022, American Chemical Society.…”

Preparation of a Multifunctional and Multipurpose Chitosan/Cyclodextrin/MIL-68(Al) Foam Column and Examining Its Adsorption Properties for Anionic and Cationic Dyes and Sulfonamides

“…Currently, the technology commonly used to remove pollutants from water bodies is adsorption, which centers on the selection of adsorbents. Chandra et al 10 used polysulfone membranes as a substrate to make nitrogenated graphene oxide-modified copper sulfide nanocomposites loaded into the polysulfone membrane and tested the composite membranes for contamination resistance and dye removal with bovine serum proteins and Congo red. Huang et al 11 prepared anionic bialdehyde cellulose by modifying bamboo pulp with sodium periodate and Girard’s reagent T. Six anionic and cationic dyes were adsorbed and separated.…”

Concave octopus-like PtCu nanoframe mediated photo-electro Fenton catalysis for fast organic dyestuff elimination

“…Nowadays, advanced oxidation strategies (AOSs) have served as high-performance technologies for organic dyestuff degradation. 14,15 Methods such as the ultrasonic catalysis, ozone treatment, photochemical catalysis, metallocene catalysts, electrodeposition, Fenton catalysis, photo-Fenton process, and electro-Fenton method have displayed an outstanding performance in dye removal. [16][17][18] Especially, the photo-electro Fenton maneuver presents splendid degradation efficiency in terms of the emergence of the hydroxyl radical (cOH) and thus oxidizes organic contaminants in wastewater.…”