【摘要】 通过两步溶剂热法制备得到了Bi₂MoO₆纳米片/TiO₂纳米棒阵列复合材料.该Bi₂MoO₆/TiO₂异质结构在可见光照射下表现出优越的电化学性能,其光电流密度相对于单纯的TiO₂和Bi₂MoO₆分别提高了57倍和29倍.另外,该异质结构的可见光电催化分解水产氢性能是Bi₂MoO₆的6倍.其性能的显著提高可以归因于对可见光吸收的增强以及光生载流子的迁移速率和分离效率的提高.更多还原

【Abstract】 Novel Bi₂ MoO₆/TiO₂ heterojunction was fabricated by growing Bi₂ MoO₆ nanosheets arrays on the vertically aligned TiO₂ nanorods arrays via a two-step solvothermal method. The obtained Bi₂ MoO₆/TiO₂ hierarchical heterojunction showed excellent visible light photoelectrochemical performance. Compared with the pure TiO₂ and Bi₂ MoO₆, the photocurrent density of the hetero junction was increased 57 and 29 times, respectively. Furthermore,the hydrogen generation rate of the Bi₂ MoO₆/TiO₂ for photoelectrocatalytic water-splitting was about 6 times higher than that of the pure Bi₂ MoO₆. The improved performance can be attributed to the synergistic effects of enhanced absorption of visible light, increase of migration rate and separation efficiency of photo-induced carriers.更多还原