Zhang Zhijie, Liu Hui, Xu Jiayue, Zhang Na
School of Materials Science and Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai, 201418, P. R. China.
Photochem Photobiol Sci. 2017 Jul 1;16(7):1194-1200. doi: 10.1039/c7pp00118e. Epub 2017 Jun 14.
In order to utilize solar light more efficiently, a BiWO photocatalyst was sensitized by Cu(ii) meso-tetra (4-carboxyphenyl) porphyrin (CuTCPP). The obtained CuTCPP/BiWO composite exhibited enhanced photocatalytic activity in the degradation of an organic pollutant, rhodamine B (RhB), under simulated solar light irradiation as well as visible light beyond the absorption edge of BiWO (λ > 450 nm). The enhancement of the photocatalytic activity can be attributed to the sensitization effect of CuTCPP, which increased the visible-light harvesting, as well as the well-matched overlapping band structures between CuTCPP and BiWO, which facilitated the separation of photo-generated electron-hole pairs. Therefore, the CuTCPP/BiWO nanohybrid may be used as a promising photocatalyst in environmental remediation.
为了更有效地利用太阳光，采用铜（II）中-四（4-羧基苯基）卟啉（CuTCPP）对BiWO光催化剂进行敏化。所制备的CuTCPP/BiWO复合材料在模拟太阳光照射以及BiWO吸收边缘以外的可见光（λ>450 nm）照射下，对有机污染物罗丹明B（RhB）的降解表现出增强的光催化活性。光催化活性的增强可归因于CuTCPP的敏化作用，其增加了可见光的捕获，以及CuTCPP与BiWO之间匹配良好的重叠能带结构，这有利于光生电子-空穴对的分离。因此，CuTCPP/BiWO纳米杂化物有望作为一种有前途的光催化剂用于环境修复。
