Qiao Li-Na, Wang Huan-Chun, Shen Yang, Lin Yuan-Hua, Nan Ce-Wen
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Nanomaterials (Basel). 2017 Jan 18;7(1):19. doi: 10.3390/nano7010019.
A novel CuSe/Cu₃Se₂ composite photocatalyst was prepared by the simple precipitation method. This composite possesses a wide photoabsorption until the range of near-infrared light, and exhibits significantly enhanced photocatalytic activity for methyl orange degradation under visible and near-infrared light irradiation compared with bare CuSe and Cu₃Se₂. The mechanism of this outstanding photocatalytic behavior can be explained by the calculated energy band positions. The efficient charge separation via a phase junction of CuSe/Cu₃Se₂ composite would make a great contribution to its much-enhanced photocatalytic efficiency.
通过简单沉淀法制备了一种新型的CuSe/Cu₃Se₂复合光催化剂。该复合材料具有较宽的光吸收范围，直至近红外光区域，并且与纯CuSe和Cu₃Se₂相比，在可见光和近红外光照射下对甲基橙降解表现出显著增强的光催化活性。这种出色的光催化行为的机制可以通过计算得到的能带位置来解释。通过CuSe/Cu₃Se₂复合材料的相结实现的有效电荷分离将对其大大提高的光催化效率做出巨大贡献。
