Synthesis, performance and action mechanism of carbon black/Ag3PO4 photocatalysts. Issue 12 (15th August 2018)

• Record Type: Journal Article
• Authors: liu, Dan; Zhao, Xiaofei; Song, Limin; Zhang, Shujuan
• Is Part Of: Ceramics international. Volume 44:Issue 12(2018)
• Page Start: 13712
• Page End: 13719
• Publication Date: 2018-08-15
• Subjects: CB/Ag3PO4 -- Photocatalysis -- Degradation -- Visible light; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.04.212
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Novel carbon black (CB)/Ag3 PO4 compound photocatalysts were synthesized from a hydrothermal method and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and electrochemical methods. The photocatalytic oxidation ability of CB/Ag3 PO4 was evaluated through methyl orange degradation experiments under visible light irradiation. The CB/Ag3 PO4 showed higher photocatalytic activity than pure Ag3 PO4 . It was indicated the compound catalysts could absorb and utilize more optical energy to improve the photocatalytic activity, which was attributed to the ability of carbon black to accelerate the electron-hole separation. In particular, the methyl orange photocatalytic degradation rate over the 7 mg/L CB/Ag3 PO4 was 1.6 times that of Ag3 PO4 . And the results of the cyclic experiment show that the photocatalyst has good stability. Moreover, the mechanism about the photocatalytic activity of CB/Ag3 PO4 compounds was investigated. In this photocatalytic reaction, OH was the major active substrate responsible for the visible-light-driven degradation.