Ag/AgI nanoparticles decorated WO3/TiO2 nanotubes with enhanced visible light photocatalytic activity

作者：Li, Tingting; Luo, Shenglian^*; Luo, Yan; Yang, Lixia

来源：Materials Letters, 2016, 180: 130-134.

DOI：10.1016/j.matlet.2016.05.082

• TiO2 Nanotubes
• Semiconductor materials
• Photocatalytic activity
• Hydroquinone

A composite photocatalyst, Ag/AgI nanoparticles decorated WO3 pre-dopedTiO(2) nanotube arrays, were constructed, which showed enhanced catalytic activity induced by the visible light. The composite structure was fabricated by a three-step method, including electrochemical anodization, wet impregnation and photo-assisted reduction. The as-prepared materials were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, transmission electron microscopy and ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy. The results revealed that the absorption range of the TiO2 nanotubes (TNTs) could be extended from ultraviolet to visible light range after the deposition of WO3 species and Ag/AgI nanoparticles. Compared with the TNTs, WO3/TNTs and Ag/AgI-TNTs, the WO3/TNTs decorated with Ag/Ag/Ag/(Agl/WO3@TNTs) showed much higher photo catalytic activity in the degradation of hydroquinone under visible light (2 420 nm) irradiation.

• 出版日期2016-10-1
• 单位南昌航空大学