A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation and photocatalytic properties of visible light driven AgAgBr/attapulgite nanocomposite
Abstract An efficient visible light photocatalyst of AgAgBr/attapulgite nanocomposite was prepared via the reaction between Ag+ and Br- ions in the presence of attapulgite and then reducing partial Ag+ ions to Ag0 species via the light-induced chemical reduction. Characterization methods, such as X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and UV–visible diffused reflectance spectroscopy (UV–vis DRS) were employed to study the phase structure, chemical state and optical properties of the nanocomposite. The AgAgBr/attapulgite nanocomposite exhibited an efficient photocatalytic activity for the degradation of Rhodamine B (RhB) aqueous solution under visible light radiation (λ>400nm). In addition, the photoactive radical species involved in the degradation reaction have been investigated by using the HO‐trapping photoluminescence (PL) spectra and quenching experiments. A possible photodegradation mechanism of RhB dye by the AgAgBr/attapulgite nanocomposite was postulated.
Highlights ► The AgAgBr/attapulgite nanocomposite photocatalyst was prepared. ► The nanocomposite exhibited excellent visible-light photocatalytic activity. ► The possible photocatalytic mechanism was postulated.
Preparation and photocatalytic properties of visible light driven AgAgBr/attapulgite nanocomposite
Abstract An efficient visible light photocatalyst of AgAgBr/attapulgite nanocomposite was prepared via the reaction between Ag+ and Br- ions in the presence of attapulgite and then reducing partial Ag+ ions to Ag0 species via the light-induced chemical reduction. Characterization methods, such as X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and UV–visible diffused reflectance spectroscopy (UV–vis DRS) were employed to study the phase structure, chemical state and optical properties of the nanocomposite. The AgAgBr/attapulgite nanocomposite exhibited an efficient photocatalytic activity for the degradation of Rhodamine B (RhB) aqueous solution under visible light radiation (λ>400nm). In addition, the photoactive radical species involved in the degradation reaction have been investigated by using the HO‐trapping photoluminescence (PL) spectra and quenching experiments. A possible photodegradation mechanism of RhB dye by the AgAgBr/attapulgite nanocomposite was postulated.
Highlights ► The AgAgBr/attapulgite nanocomposite photocatalyst was prepared. ► The nanocomposite exhibited excellent visible-light photocatalytic activity. ► The possible photocatalytic mechanism was postulated.
Preparation and photocatalytic properties of visible light driven AgAgBr/attapulgite nanocomposite
Yang, Yanqing (author) / Zhang, Gaoke (author)
Applied Clay Science ; 67-68 ; 11-17
2012-06-27
7 pages
Article (Journal)
Electronic Resource
English
Preparation and photocatalytic properties of visible light driven AgAgBr/attapulgite nanocomposite
| Online Contents | 2012
Synthesis of AgBr/ZnO nanocomposite with visible light-driven photocatalytic activity
| British Library Online Contents | 2012
| British Library Online Contents | 2014
| British Library Online Contents | 2014