【摘要】 利用离子液体辅助醇热法制备了具有较高活性的Bi₂WO₆可见光催化剂,并进一步采用光还原法将Ag纳米粒子负载到Bi₂WO₆催化剂表面.利用Ag良好的导电性以及表面plasma效应,有效增强了催化剂的可见光吸收,降低了光生载流子复合的几率,显著提高了污染物降解的光催化活性.同时确定了最佳Ag含量和反应条件.更多还原

【Abstract】 In this paper,an ionic liquid assisted solvothermal process has been developed to synthesize the Bi₂WO₆ photocatalyst.Furthermore,Ag / Bi₂WO₆ was prepared by aphoto-reduction method. The relationships between catalyst structure and catalysis performance were discussed in detail. Ag nanoparticles deposited on the surface of Bi₂WO₆ enhanced the absorption of visible light and improved the separation efficiency of the carrier via plasma resonance effect. Ag / Bi₂WO₆ catalyst with 0. 75%（ mole fraction） Ag / Bi and photo-reduction time of 20 min has been confirmed to have the best photocatalytic activity.更多还原