Facile synthesis of ZnO–Ag nanocomposite supported by graphene oxide with stabilised band-gap and wider visible-light region for photocatalyst application

• DOI: 10.1016/j.jmrt.2022.05.184
• Publication Date: 2022-06-09T21:38:26Z
• Authors: Saharman Gea; Suhut A. Situmorang; Nurhaida Pasaribu; Averroes F.R. Pil...; Boy Attaurrazaq; Reka Mustika Sari; Khatarina Meldawa...; Stergios Goutianos
• Keywords: Wurtzite crystal structure; Photodegradation; Graphite oxide; Electrospinning; Visible spectrum

The synthesis of zinc oxide (ZnO), with the support silver (Ag) and Graphene Oxide (GO), was carried out in several stages as a potential photocatalytic material. First, GO synthesized from commercial graphite using Hummers' method, ZnO Ag precursors were prepared. second stage electrospinning process, followed by calcination. solution to produce nanofibers, mixture polymer (polyvinyl alcohol), acetate, AgNO3, GO. fibres produced thermally treated at 500 C for 2 h. XRD FTIR analyses confirmed that successfully graphite. had wurtzite cubic hexagonal structures based on TEM characterization. nanocomposites developed increased photocatalyst characteristics: low band gap energy, such 2.98 2.76 (ZnO–Ag), 2.93 (ZnO-GO), 2.75 (ZnO–Ag-GO). Furthermore, absorption characteristics visible light region. Using UV–Visible spectrophotometer, Diffuse Reflectance Spectroscopy, Photoluminescence, it explained Surface Plasmon Resonance effect possessed nanoparticles semiconductor properties acted electron trapping, thereby reducing or preventing occurrence electron–hole recombination. In conclusion, addition could improve direct application photodegradation organic textile waste water.