Facile hydrothermal synthesis and photocatalytic activity of rod-like nanosized silver tungstate

Author

Rongxian Zhang ; Haiying Cui ; Xiaofei Yang ; Hua Tang ; Heng Liu ; Yang Li

Author_Institution

Sch. of Chem. & Chem. Eng., Jiangsu Univ., Zhenjiang, China

Volume

7

Issue

12

fYear

2012

fDate

12/1/2012 12:00:00 AM

Firstpage

1285

Lastpage

1288

Abstract

Rod-like nanosized silver tungstate (Ag₂WO₄) was synthesised via a facile hydrothermal method and characterised by field emission scanning electron microscopy, X-ray diffraction, Raman spectroscopy and electron spin resonance spectroscopy. Under ultraviolet (UV) light, nearly complete degradation of rhodamine B (RhB) was observed in Ag₂WO₄ suspension after irradiation for 60 min, around 15 RhB was absorbed in the dark. However, more than 60 of methyl blue was absorbed in the dark and the rest was observed to be completely degraded upon UV light irradiation for 10 min. The formed superoxide (O₂^-.) and hydroxyl (·OH) radicals, as well as photoinduced holes were considered to be the dominant active species in the photocatalytic process.

Keywords

Raman spectra; X-ray diffraction; catalysis; dyes; field emission electron microscopy; nanofabrication; nanostructured materials; paramagnetic resonance; photodissociation; scanning electron microscopy; silver compounds; suspensions; Ag₂WO₄; Raman spectroscopy; RhB; UV light irradiation; X-ray diffraction; degradation; electron spin resonance spectroscopy; facile hydrothermal synthesis; field emission scanning electron microscopy; hydroxyl radicals; methyl blue; photocatalytic activity; photoinduced holes; rhodamine B; rod-like nanosized silver tungstate; superoxide radicals; suspension; time 10 min; time 60 min; ultraviolet light;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2012.0765

Filename

6419615