Facet-controlled synthesis and facet-dependent photocatalytic properties of SnO2 micropolyhedrons

Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

“…Thus, the photogenerated electron-hole pairs are separated and the recombination of electrons with holes will be inhibited. Followed the separation of the electron-hole pairs, the photogenerated electrons (e -) in CB of SnO 2 will react with dissolved oxygen (O 2 ) in water to produce superoxide radical anions (O 2 •-) [51]. The superoxide radical anions (O 2 •-) can also been further reduced by adsorbed water to hydroxyl radicals (•OH).…”

Controlled synthesis of Sn-based oxides via a hydrothermal method and their visible light photocatalytic performances

“…7, except for SnO 2 , the Sn 3d 5/2 peak can be deconvoluted into two peaks centered at 486.4 and 486.8 eV, which can be assigned to Sn 2+ and Sn 4+ , respectively. 55 The lack of a prominent binding energy shi of Sn 3d for different oxidation states can be attributed to the Madelung effects. 56 No Sn 2+ signal can be detected in SnO 2 (Fig.…”

“…4a), this SnO 2 should be on SnO surface and is formed by the oxidation of Sn 2+ in an ambient environment. 55,57 The bulk of the sample should still be SnO. Fig.…”

The Role of Annealing Temperature in Photocatalytic Performance of Fe3O4/SnO2 nanocomposites

“…Figure 1 shows the XRD spectrum of SnO2 nanoparticles and Fe3O4/SnO2 nanocomposites with various annealing temperature. The diffraction pattern of Fe3O4 sample observed at the value 2θ = 30.14°, 35.49°, 43.28°, 57.20°, 62.83° and 74.8° which shows each area (220), (311), (400), (511), (440) Strong and sharp peaks can indicate that the prepared samples are highly crystalline [14]. The grain size measurement was calculated using Scherrer's equation and lattice parameter was calculated using Rietveld refinement method.…”