Hierarchical architecture of WO₃ nanosheets by self-assembly of nanorods for photoelectrochemical applications

We reported a facile solvothermal strategy for fabricating hierarchical architectures of WO₃ nanosheets with WO₃ nanorod branches standing orderly on the nanosheets. An enhanced photoelectrochemical activity is achieved, attributable to the high porosity provided by the hierarchical architecture. The novel 3D nanostructure holds great potential in photocatalysis, concurrent filtration, water purification and chemical sensing.