School of Chemistry and Materials Science, Ludong University, Yantai 264025, China.
School of Chemistry and Materials Science, Ludong University, Yantai 264025, China.
J Colloid Interface Sci. 2019 Nov 15;556:92-101. doi: 10.1016/j.jcis.2019.08.038. Epub 2019 Aug 9.
The fabrication of TiO NTs/BiMoO type-II heterojunction photocatalyst was carried out by a simple solvothermal method. BiMoO nanoparticles with nanosheet microstructures were successfully loaded on TiO NTs surface through the adjustment of reaction intervals. The heterojunction photocatalyst showed excellent organic dye and heavy metal ion removal performances, and nearly 100%, 75%, 100% and 100% of MO, RhB, MB and Cr (VI) were removed by simulative sunlight irradiation for 3 or 2 h, respectively. The outstanding photocatalyic performance was mainly due to the formation of type-II heterojunction between TiO and BiMoO. The type-II heterojunction not only enhanced visible light response but also accelerated photogenerated charge carrier transfer and restrained the recombination of photogenerated electron-hole pairs with the assistance of internal electric field.
采用简单的溶剂热法制备了 TiO NTs/BiMoO 型 II 异质结光催化剂。通过调整反应间隔，成功地将具有纳米片微观结构的 BiMoO 纳米颗粒负载到 TiO NTs 表面。该异质结光催化剂表现出优异的有机染料和重金属离子去除性能，在模拟太阳光照射下分别经过 3 或 2 h 后，MO、RhB、MB 和 Cr(VI)的去除率接近 100%、75%、100%和 100%。优异的光催化性能主要归因于 TiO 和 BiMoO 之间形成了 II 型异质结。该 II 型异质结不仅增强了可见光响应，还通过内部电场加速光生载流子转移，并抑制光生电子-空穴对的复合。
