A homogeneous layer of Bi₂O₃-Bi₁₄WO₂₄ composite (BWO/Bi₂O₃) thin film was fabricated using a combination of electrodeposition and thermal treatment. The evenly distributed Bi₁₄WO₂₄ component within the Bi₂O₃ layer was found to be important in stabilising the photoelectrochemical performances of Bi₂O₃ photoanode by promoting the photoelectron transport. The unmodified Bi₂O₃ suffered from severe photocorrosion as proven by X-ray diffraction (XRD) and inductively coupled plasma (ICP) analyses while the composite thin film was active without noticeable activity decay for at least 3 h of illumination. This strategy might be applicable to other photocatalysts with stability issues.

_{Bi 2} O ₃ -Bi ₁₄ WO ₂₄复合材料 (BWO/Bi ₂ O ₃ ) 薄膜的均匀层是使用电沉积和热处理的组合制造的。_{发现在 Bi 2} O ₃层内均匀分布的 Bi ₁₄ WO ₂₄组分通过促进光电子传输对于稳定 Bi ₂ O _{3光阳极的光电化学性能很重要。}未改性的 Bi ₂ O ₃通过 X 射线衍射 (XRD) 和电感耦合等离子体 (ICP) 分析证明，复合薄膜在至少 3 小时的光照下没有明显的活性衰减。该策略可能适用于其他存在稳定性问题的光催化剂。