An efficient SrMoO₄ photocatalyst was fabricated by Bi³⁺ doping under hydrothermal condition.

Bi³⁺ doping effects, including crystalline size reduction, band gap narrowing, and lattice contraction were discovered in SrMoO₄ nanomaterials.

The photocatalytic activity was great improved on account of Bi³⁺ doping effects.

Photoluminescence studies found that hydroxyl radical (OH) is the main active species in the photocatalytic degradation process.