Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6454668 | Applied Catalysis B: Environmental | 2017 | 5 Pages |
â¢The α-Fe2O3 exposed by {012} and {104} facets can facilitate the reduction of IO3â.â¢The O2 evolution activity (309.4 μmol hâ1 gâ1) of α-Fe2O3 photocatalyst mainly exposed by {012} and {104} facets is 84 times higher than that (3.68 μmol hâ1 gâ1) of α-Fe2O3 mostly exposed by {101} and {111} planes.â¢This work may open the door for further development of enhanced Z-scheme photocatalytic systems.
The mechanism study of redox mediator to transfer the photogenerated electrons is extremely desirable for artificial Z-scheme photocatalytic systems. Here we find that the α-Fe2O3 exposed by {012} and {104} facets can facilitate the reduction of IO3â, which results in increasing the activity of photocatalytic water oxidation significantly. By employing NaIO3 as an electron acceptor, the O2 evolution activity (309.4 μmol hâ1 gâ1) of α-Fe2O3 photocatalyst mainly exposed by {012} and {104} facets is 84 times higher than that (3.68 μmol hâ1 gâ1) of α-Fe2O3 mostly exposed by {101} and {111} planes. We anticipate that the findings in this work may open the door for further development of enhanced Z-scheme photocatalytic systems.
Graphical abstractDownload high-res image (103KB)Download full-size image