Enhanced performance for Rhodamine B degradation over SnO2/BiOBr photocatalyst

Abstract SnO 2 /BiOBr photocatalyst with broad‐spectrum response was one step constructed via in situ hydrothermal method; SnO 2 was anchored on the surface of BiOBr sheets by acidolysis of Na 2 SnO 3 in the stock solution producing BiOBr. The photocatalytic degradation activity over rhodamine B (RhB) under visible light‐emitting diode irradiation of BiOBr is further improved by coupling a 7% amount of SnO 2 . The reaction rate constant of 7%SnO 2 /BiOBr is 8.2 times that of pristine BiOBr. The enhanced photocatalytic performance can be ascribed to the excellent adsorption abilities for RhB, broadening visible light response, and efficient transfer of photogenerated electrons from BiOBr to SnO 2 .