Fast one-pot laser-based fabrication of ZnO/TiO2-reduced graphene oxide nanocomposite for photocatalytic applications
Yükleniyor...
Dosyalar
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Laser synthesis is rapidly emerging to be an efficient and unique method for the synthesis of a wide spectrum of nanomaterials owing to its ease of setup, simplicity, and generation of high-purity nanomaterials. This study explores a pulse laser ablation protocol in the synthesis of ZnO-TiO2 (ZT) and ZnO-TiO2-reduced graphene oxide (ZT-rGO) nanocomposites. The effect of rGO loading (5 %, 10 %, and 20 %) was investigated on the nature of the crystalline nanostructures formed, the increased thermal stability achieved, and the effective removal of methylene blue dye. Following fabrication, the nanocatalyst materials were characterized by TEM, PXRD, SEM/EDX, AFM, UV–Vis, TGA, and FTIR. Using UV illumination, the as-synthesized photocatalysts were evaluated in the photodegradation of methylene blue (MB) as a model dye pollutant. Among the nanocomposites, the ZT-rGO 5 % shows the best photocatalytic activity by having a preferential rate constant of 0.149 min?1. The nanocomposites were prepared in 30 min, providing 98.5 % MB removal within just 30 min, using 10 mg/L of MB and 20 mg/L of the catalyst. During the photodegradation process, the rGO component serves as an electron trap, thus enhancing the formation of holes which are the mainstay of any photocatalytic process. As demonstrated by the work reported, the laser ablation technique shows great promise in the fabrication of ZT-rGO nanocomposites and similar analogs relevant to the efficient decolorization of wastewater. © 2022 Elsevier Ltd
Açıklama
Anahtar Kelimeler
Laser ablation, Nanomaterials, Photocatalysis, Reduced graphene oxide, TiO2, Aromatic compounds, Fabrication, Graphene, II-VI semiconductors, Laser ablation, Nanocatalysts, Nanocomposites, Photocatalytic activity, Rate constants, TiO2 nanoparticles, Zinc oxide, Graphene oxide nanocomposites, Laser synthesis, Laser-based fabrication, Lasers ablations, Methylene Blue, One pot, Photocatalytic application, Reduced graphene oxides, TiO 2, Zno@tio, Titanium dioxide
Kaynak
Optics and Laser Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
160
