Ag2S/Ag3PO4/Ni Thin Films: Preparation and Photocatalytic Activity for Rhodamine B

作者：Zhao Di; Zhang Bo; Duan Zhao-Juan; Li Ai-Chang^*

来源：Chinese Journal of Inorganic Chemistry, 2016, 32(12): 2158-2164.

DOI：10.11862/CJIC.2016.276

• Ag2S/Ag3PO4/Ni thin film
• electrochemical preparation
• photocatalysis
• rhodamine B
• reaction mechanism

Ag2S/Ag3PO4/Ni composite thin films were prepared by electrochemical method. The surface morphology, phase structure, optical characteristics and band structure of the thin film were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and ultraviolet-visible diffuse reflectance spectroscopy (UVVis DRS), respectively. Its photocatalytic properties and stability were evaluated with rhodamine B (RhB) as a model compound. Using a method of adding active species scavenger to the solution, mechanism of photocatalytic degradation of the film was explored. The results show that the Ag2S/Ag3PO4/Ni thin film is composed of uniform spherical nanoparticles. The photocatalytic activity of the as-prepared Ag2S/Ag3PO4/Ni thin film was higher than those of pure Ag3PO4/Ni thin film and Ag2S/Ni thin film respectively. The film maintains nearly 100% of their corresponding initial photocatalytic activity after 6 cycles. Furthermore, the photodegradation mechanism of the composite films for RhB under the visible light was preliminary proposed.

• 出版日期2016-12
• 单位廊坊师范学院