A novel kind of nanocomposites consisted of CdSe quantum dots (QDs) sensitized BaTiO₃ nanocudes was successfully synthesized by facile hydrothermal and chemical bath methods to investigate the synergy effect of isotropic {001} facets and anisotropic ({230} and {001}) facets on photocatalytic water reduction. The CdSe QDs were randomly decorated on the isotropic facets or anisotropic facets of BaTiO₃. The optimal CdSe QDs sensitization content was 7.5% (molar ratio), namely the 7.5% CdSe QDs sensitized BaTiO₃ composite showed significantly enhanced photocurrent response and photocatalytic performance. The superior photocatalytic activities of CdSe/BaTiO₃ composites were owing to the synergy effect of {001} and {230} facets including the charge separation and electronic reduction activities. The work suggested that crystal facet engineering had more promising application in the heterogeneous catalyst system.

通过简便的水热和化学浴方法成功地合成了由CdSe量子点（QDs）敏化的BaTiO ₃纳米晶组成的新型纳米复合材料，以研究各向同性{001}面与各向异性（{230}和{001}）面的协同效应对光催化减水。将CdSe量子点随机装饰在BaTiO ₃的各向同性面或各向异性面上。最佳的CdSe QDs敏化含量为7.5％（摩尔比），即7.5％的CdSe QDs敏化的BaTiO ₃复合材料表现出显着增强的光电流响应和光催化性能。CdSe / BaTiO ₃的优异光催化活性由于{001}和{230}面的协同作用，包括电荷分离和电子还原活性，使得复合材料成为可能。这项工作表明，晶体刻面工程在非均相催化剂体系中具有更广阔的应用前景。