Photocatalytic activity of ferric oxide/titanium dioxide nanocomposite films on stainless steel fabricated by anodization and ion implantation
来源期刊：International Journal of Minerals Metallurgy and Materials2013年第8期
论文作者：Wei-ting Zhan Hong-wei Ni Rong-sheng Chen Gao Yue Jun-kai Tai Zi-yang Wang
文章页码：725 - 732
摘 要：A simple surface treatment was used to develop photocatalytic activity for stainless steel.AISI 304 stainless steel specimens after anodization were implanted by Ti ions at an extracting voltage of 50 kV with an implantation dose of 3 × 10 15 atoms.cm 2 and then annealed in air at 450 C for 2 h.The morphology was observed by scanning electron microscopy.The microstructure was characterized by X-ray diffraction and X-ray photoelectron spectroscopy.The photocatalytic degradation of methylene blue solution was carried out under ultraviolet light.The corrosion resistance of the stainless steel was evaluated in NaCl solution（3.5 wt%） by electrochemical polarization curves.It is found that the Ti ions depth profile resembles a Gaussian distribution in the implanted layer.The nanostructured Fe 2 O 3 /TiO 2 composite film exhibits a remarkable enhancement in photocatalytic activity referenced to the mechanically polished specimen and anodized specimen.Meanwhile,the annealed Ti-implanted specimen remains good corrosion resistance.
Wei-ting Zhan，Hong-wei Ni，Rong-sheng Chen，Gao Yue，Jun-kai Tai，Zi-yang Wang
Key Laboratory for Ferrous Metallurgy and Resources Utilization of the Ministry of Education,Wuhan University of Science and Technology
摘 要：A simple surface treatment was used to develop photocatalytic activity for stainless steel.AISI 304 stainless steel specimens after anodization were implanted by Ti ions at an extracting voltage of 50 kV with an implantation dose of 3 × 10 15 atoms.cm 2 and then annealed in air at 450 C for 2 h.The morphology was observed by scanning electron microscopy.The microstructure was characterized by X-ray diffraction and X-ray photoelectron spectroscopy.The photocatalytic degradation of methylene blue solution was carried out under ultraviolet light.The corrosion resistance of the stainless steel was evaluated in NaCl solution（3.5 wt%） by electrochemical polarization curves.It is found that the Ti ions depth profile resembles a Gaussian distribution in the implanted layer.The nanostructured Fe 2 O 3 /TiO 2 composite film exhibits a remarkable enhancement in photocatalytic activity referenced to the mechanically polished specimen and anodized specimen.Meanwhile,the annealed Ti-implanted specimen remains good corrosion resistance.
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