Fabrication of Ag3PO4-AgBr-PTh composite loaded on Na2SiO3 with enhanced visible-light photocatalytic activity
- 16 Downloads
A novel Ag3PO4-AgBr-PTh composite loaded on Na2SiO3 was synthesized for enhanced visible-light photocatalytic activity. The photocatalytic activity of the samples was evaluated by photodegrading rhodamine B (RhB) under visible light irradiation. The main reactive species and possible photocatalytic mechanism were also discussed. As a result, the Ag3PO4-AgBr-PTh composite loaded on Na2SiO3 exhibited enhanced photocatalytic activity for RhB compared with Ag3PO4 under visible-light irradiation. Additionally, it was demonstrated that the hole (h+) and superoxide radical (•O 2 − ) were the major reactive species involving in the RhB degradation. PTh played vital role for the enhanced photocatalytic activity of Ag3PO4-AgBr-PTh-Na2SiO3 composite, which offered an electron transfer expressway and accelerated the transfer of the electrons from the CB of AgBr into Ag3PO4. This work could provide a new perspective for the synthesis of Ag3PO4-based composites and the improvement of photocatalytic activity of Ag3PO4.
KeywordsAg3PO4-AgBr-PTh-Na2SiO3 composite PTh photocatalytic activity visible light
Unable to display preview. Download preview PDF.
This work was supported by the open topics of State Key Laboratory of Pollution Control and Resource Research (PCRRF14006).
- Yao W, Zhang B, Huang C, et al. Synthesis and characterization of high efficiency and stable Ag3PO4/TiO2 visible light photocatalyst for the degradation of methylene blue and rhodamine B solutions. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2012, 22: 4050–4055CrossRefGoogle Scholar
- Kumar S, Surendar T, Baruah A, et al. Synthesis of a novel and stable g-C3N4–Ag3PO4 hybrid nanocomposite photocatalyst and study of the photocatalytic activity under visible light irradiation. Journal of Materials Chemistry A: Materials for Energy and Sustainability, 2013, 1(17): 5333–5340CrossRefGoogle Scholar