Structural Characterization of SnO2-rGO Heterogeneous Photocatalyst with Enhanced Antimicrobial Properties
Küçük Resim Yok
Tarih
2025
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The integration of SnO2 nanoparticles (NPs) with reduced graphene oxide (rGO) offers a unique approach for antimicrobial applications and photocatalytic degradation of organic contaminants. In this study, binary heteronanostructures were synthesized via a hydrothermal method using 2 and 4 wt% rGO. Optical properties, crystallinity, IR spectra, and surface morphology, along with elemental configuration, were characterized through DRS, XRD, FTIR, SEM, and EDX techniques. A progressive reduction in the bandgap (Eg) was observed for SnO2-rGO-A (2 wt%) and SnO2-rGO-B (4 wt%) BNCs as compared to pure SnO2 NPs, i.e., from 3.6 to 3.30 eV and then to 3.25 eV, respectively. The narrow band gap near UV region, suggested enhanced light-harvesting capacity. Photocatalytic efficiency was evaluated under visible light in a photocatalytic reactor using a 200 W Xe lamp as the irradiation source, with methylene blue (MB) dye as the target pollutant. SnO2-rGO-B BNCs showed the highest photodegradation efficiency (97%), followed by SnO2-rGO-A (91%) and SnO2 NPs (64%). Antibacterial evaluation against Staphylococcus aureus revealed highest zone of inhibition (ZOI) at a 10 mg/L sample concentration, with SnO2-rGO-B exhibiting the most potent activity. The results show that rGO improves photocatalytic and antibacterial performance, making the composite suitable for environmental and antimicrobial applications.
Açıklama
Anahtar Kelimeler
Antibacterial, Band gap, Binary nanocomposites, Photocatalysts, Tin oxide, Graphene oxide
Kaynak
Chemistryselect
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
10
Sayı
28
