Photoactive Hybrid Film Photocatalyst of Polyethersulfone-ZnO for the Degradation of Methyl Orange Dye: Kinetic Study and Operational Parameters

Abstract

Abstract:A facile and effective technique to immobilize photocatalyst nanoparticles by incorporating zinc oxide (ZnO) into polyethersulfone polymeric films by means of a phase inversion technique is reported. The degradation study of methyl orange (MO) dye was performed using a series of ZnO-embedded polymer hybrid systems. The photoactivity of the films increased in parallel with increased ZnO loading up to 17 wt%. The photodegradation process followed a pseudo first-order kinetics with an achievement of almost 100% MO removal in original conditions. The PZ-17 film demonstrated an excellent and comparable degradation performance up to five cycles, signifying the reliability of the film photocatalyst against ultraviolet irradiation and degradation.

Zinc Oxide for Functional Textile Coatings: Recent Advances

“…The decomposition of the dye chromogen resulted in solution decolorization, reflecting a decrease in the dye absorbance ( Figure 3). The results also showed that the photocatalytic degradation activity of ZnO-coated textile substrates increased with increasing surface porosity, roughness, specific surface area, and hydrophilicity [12,21]. These factors facilitate the adsorption of the dye onto the ZnO Ps and enhance the formation of ROS.…”

“…ZnO-coated textile substrates have previously been used for the solar-driven photodegradation process of toxic organic compounds in water and air. To this end, ZnO-coated polyester [21,103,104,119] or cotton [12] substrates were immersed in different dye solutions, such as methylene blue, methyl orange, C.I. Acid Blue 9, C.I.…”

“…Despite much research in this field, the exact mechanism of the antimicrobial activity of ZnO is still not completely understood [36,100]. The reason for some contradictory results most likely arises from the use of different zinc precursors, The results also showed that the photocatalytic degradation activity of ZnO-coated textile substrates increased with increasing surface porosity, roughness, specific surface area, and hydrophilicity [12,21]. These factors facilitate the adsorption of the dye onto the ZnO Ps and enhance the formation of ROS.…”

“…Furthermore, ZnO Ps have been applied to textile fibers to improve flame retardancy and thermal stability and to achieve moisture management and thermal insulation, electrical conductivity, and hydrophobicity [5][6][7][8][9][10][11][12][13][14][15][16]. The photocatalytic properties also enable ZnO Ps to be used as degradation agents for different pollutants, such as dyes and surfactants present in textile industry wastewaters [12,[17][18][19][20][21][22][23].…”

Fabrication of Zr-doped SnO2 nanoparticles with synergistic influence for improved visible-light photocatalytic action and antibacterial performance

“…Thus, the photocatalytic recital of 4% Zr:SnO 2 nanostructured PCs is intensely upgraded owing to the synergistic things, which embrace the sturdier light fascination, the calmer light excitation, the improved charge carrier's departure, further effectual of oxygen adsorption and additional photoactivity sites. In addition, the photocatalytic presentations of the as-obtained 4% of Zr:SnO 2 PCs were associated with recently testified PCs by different semiconductors metal oxides/metal and auxiliary nanocomposites are deliberated in Table 1 (Xin et al 2012;Shivaraju et al 2017;Raliya et al 2017;Hir et al 2017;Mbuli et al 2019). Hereafter it has comprehended that the Zr:SnO 2 PCs have upgraded catalytic proficiency analogized with further comprehensive photocatalytic materials.…”