Novel photocatalyst, Bi2Sn2O7, for photooxidation of As(III) under visible-light irradiation

Hydrothermal synthesis of clew-like Bi2Sn2O7 and visible-light photocatalytic activity

“…The Eg of BSO can be estimated from a plot of (αhv)1/2 versus the photon energy hv shown in Figure 5(b). The band gap absorption edge of BSO-24 is about 495 nm and the estimated Eg is about 2.50 eV, which is similar to the previously reported value [24]. The Eg of other four samples (BSO-3, BSO-6, BSO-12, BSO-48) are about 2.59, 2.81, 2.85, and 2.56 eV, respectively.…”

Fabricaion of improved novel p–n junction BiOI/Bi 2 Sn 2 O 7 nanocomposite for visible light driven photocatalysis

“…Tian et alstudied the oxidation and removal of As(III) by using BSO photocatalyst under visible light irradiation [17]. Xu et al [18] and Hyoun et al [19] studied the doping effect of Pr A c c e p t e d M a n u s c r i p t 5 and SnO 2 to BSO for the enhancement of RhB degradation and also investigated the BSO oxygen sensing properties.…”

Application of Semiconductor Photocatalytic Materials for the Removal of Inorganic Compounds from Wastewater

“…Alternative catalyst semiconductors to TiO 2 , such as ZnO (Rivera-Reyna et al 2013) and Bi 2 Sn 2 O 7 (Tian et al 2012), have been evaluated for the oxidation of arsenic species. The photocatalytic removal of As(III) and monomethylarsonic acid MMA(V) compounds using ZnO synthesized by the sol-gel technique results in Yao et al (2010) their effective and rapid mineralization to less toxic inorganic arsenate As(V) in the presence of UV light (350 nm).…”

“…Nanocrystalline Bi 2 Sn 2 O 7 synthesized via a hydrothermal route was evaluated for the removal of As(III) from aqueous solution under visible light radiation (Tian et al 2012). The Bi 2 Sn 2 O 7 nanoparticles exhibited high photocatalytic activity under visible light irradiation for the oxidation of As(III) (up to 96.8 %) for an initial concentration of As(III) of 2 mg L À1 .…”