Antibacterial and Photocatalytic Potential of WO۳ Nanoparticles Immobilized on Graphitic Carbon Nitride

Wastewater released by textile manufacturing companies frequently contains organic contaminants, predominantly dyes and pigments, which are detrimental to both human health and aquatic ecosystems. Consequently, it is crucial to eradicate these pollutants from aquatic environments in a cost-efficient and reliable manner. This work aims to develop efficient nanostructures for dye removal from wastewater and to inhibit the growth of both Gram-positive and Gram-negative bacteria. The WO۳/GCN heterostructure was synthesized by a simple auto-combustion method. The physical characteristics of the synthesized materials were examined by utilizing advanced analytical techniques. The prepared material was evaluated for its catalytic removal of bromophenol blue (BPB) dye. The WO۳/GCN ۱۰% heterostructure showed ۹۶.۱۲% (۰.۰۱۴۴۹ min-۱) degradation efficiency towards BPB in ۹۰ minutes, which is ۳.۹ times higher than pure GCN (۰.۰۰۳۷۲ min-۱) and ۲.۷ times higher than pure WO۳ (۰.۰۰۵۲۸ min-۱) nanoparticles. The prepared WO۳/GCN (۱۰%) heterostructure showed higher photocatalytic degradation efficacy compared to pure graphitic carbon nitride and tungsten trioxide due to greater visible light absorption, enhanced e-/h+ pair separation, and strong heterojunction formation. Further, the notable stability and reusability of heterostructure were demonstrated through stability and scavenging experiments. The antibacterial efficiency of the heterostructure was evaluated against multidrug-resistant Gram-positive S. aureus (NCIM ۲۶۵۴) and Gram-negative E. coli (NCIM ۲۲۵۶) microorganisms. The WO۳/GCN (۱۰%) exhibited a significant zone of inhibition against the aforementioned bacterial species. This study's findings highly recommend the utilization of the produced nanomaterial in wastewater treatment for the removal of different dyes and microorganisms.

کلیدواژه ها:

WO۳/GCN heterostructure ، Photocatalysis ، bromophenol blue ، Photocatalytic degradation