Photoluminescence and Photocatalytic Activity of Bi2MoO6:Ln(3+) Nanocrystals

作者：Feng, Li; Li, Mingxia; Pan, Kai; Li, Rong; Fan, Naiying; Wang, Guofeng^*

来源：Journal of Nanoscience and Nanotechnology, 2016, 16(4): 3781-3785.

DOI：10.1166/jnn.2016.11850

• Bi2MoO6
• Ln(3+)
• Nanocrystals
• Photoluminescence
• Photocatalytic Activity

Sheet-like Bi2MoO6:Ln(3+) nanocrystals were synthesized by a hydrothermal method. The crystalline size of Bi2MoO6:Ln(3+) (Ln=Eu and Gd) nanocrystals changes gradually with the increasing of Ln(3+) content in the reaction solutions. The photoluminescence properties of Bi2MoO6:Ln(3+) nanocrystals were investigated in detail. In the emission spectra of Bi2MoO6:Eu3+ nanocrystals the D-5(0) -> F-7(2) is much stronger than the D-5(0) -> F-7(1) and is the strongest when the excitation is performed at 467 nm. The relative intensity of the transitions from Eu3+ increased with increasing Eu3+ concentrations, up to about 50 mol%, and then decreased abruptly. In the excitation spectra of Bi2MoO6:Eu3+ (30%)/Gd3+ monitored at 618 nm, the F-7(0) -> D-5(2) (similar to 467 nm) transition is dominating when the Gd3+ concentrations were 10% or 20%. When the Gd3+ concentration was 30%, the F-7(0) -> D-5(1) (similar to 538 nm) transition is dominating. In addition, the photocatalytic activity of Bi2MoO6:Eu3+ was evaluated by the degradation of rhodamine B (RhB) aqueous solution under simulated solar light. The best photocatalytic performance was observed when the Eu3+ concentration was 1%.

• 出版日期2016-4
• 单位黑龙江大学