Correction to “Sr<sub>2</sub>NiWO<sub>6</sub> Double Perovskite Oxide as a Novel Visible-Light-Responsive Water Oxidation Photocatalyst”
Ahmed Mahmoud Idris, Taifeng Liu, Jafar Hussain Shah, Anum Malik, Dan Zhao, Hongxian Han, Can Li
Abstract
S ome errors have been found in Figure 3D in the original article.The basslines of the Mott-Schottky plot of the Sr 2 NiWO 6 sample did not start from 0, which slightly changes the value of the flat band potential of the sample.Therefore, we provide a new figure with the accurate baseline starting from 0. As a result, the values of the valence band (VB) and conduction band (CB) of the Sr 2 NiWO 6 are slight changed, as can be seen in the corrected Figure 3D shown below.Accordingly, the paragraph describing the Mott-Schottky plot on page 25942 should be read as "The Mott-Schottky plot in Figure 3D reveals that the synthesized Sr 2 NiWO 6 is an n-type semiconductor with flat band potential located at about -0.5 V versus NHE at pH 7. It is well known that the bottom of the CB of n-type semiconductor is about -0.2 V more negative than that of the flat band potential, therefore, the CBM of Sr 2 NiWO 6 was estimated to be about -0.7 V. Considering the E g of Sr 2 NiWO 6 is 2.88 eV, the VBM can be estimated to be located at about 2.18 V."These corrections are minor and do not alter the conclusions of the paper, but the authors need to make such a correction to avoid any misunderstanding.