Synthesis of V5+‐doped Ag/AgCl photocatalysts with enhanced visible light photocatalytic activity. (19th January 2018)

• Record Type: Journal Article
• Authors: Guo, Caiping; Song, Limin; Li, Yamiao; Zhang, Shujuan
• Is Part Of: Applied organometallic chemistry. Volume 32:Number 4(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-01-19
• Subjects: enhanced mechanism -- photocatalyst -- V5+‐doped Ag/AgCl; Organometallic chemistry -- Periodicals; Organometallic compounds -- Periodicals; 547.05
• DOI: 10.1002/aoc.4237
• Languages: English
• ISSNs: 0268-2605

Abstract

Abstract : V 5 + ‐doped Ag/AgCl photocatalysts were prepared via the ion exchange method. The catalysts were characterized using X‐ray diffractometry, transmission electron microscopy, and energy‐dispersive X‐ray, X‐ray photoelectron, Fourier transform infrared and ultraviolet–visible spectroscopies. The V 5+ ‐doped Ag/AgCl photocatalysts show much higher photocatalytic activities than Ag/AgCl under visible light irradiation for methyl orange (MO) decomposition. Especially, the 2.0 wt% V 5+ ‐doped Ag/AgCl photocatalyst shows the highest photocatalytic activity and also high stability after five cycles. The MO degradation rate during each cycle is almost maintained at 97%. Electron spin resonance spectroscopy and radical trapping experiments reveal that holes play an important role in the photocatalytic process. Abstract : Herein, we reported a novel photocatalyst of V 5+ ‐doped Ag/AgCl. Our results demonstrated that the 2.0 wt% V 5+ ‐doped Ag/AgCl is an excellent photocatalytic activity for degrading MO. The possible photodegradation mechanism were discussed by ESR spectroscopy and the radical trapping experiments, results showing that the hole (h + ) played a more important role in the photocatalytic process.