ZnFe{sub 2}O{sub 4}/TiO{sub 2} nanocomposite films for photocathodic protection of 304 stainless steel under visible light

Journal Article · Wed Nov 15 04:00:00 EST 2017 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2017.07.048· OSTI ID:22730454

Lei, Jing ^[1]; Shao, Qian ^[1]; Wang, Xiutong ^[2]; Wei, Qinyi; Yang, Lihui; Li, Hong; Huang, Yanliang; Hou, Baorong ^[2]

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1. Shandong University of Science and Technology, Qingdao 266590 (China)
2. Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071 (China)

Highlights: • Hydrothermal method for synthesizing ZnFe{sub 2}O{sub 4} nanoparticles on TiO{sub 2} NTs. • The photoelectrochemical property of TiO{sub 2} could greatly improve by doping ZnFe{sub 2}O{sub 4}. • The ZnFe{sub 2}O{sub 4}/TiO{sub 2} composite films provide a better photocathodic protection for 304SS. - Abstract: ZnFe{sub 2}O{sub 4} sensitized TiO{sub 2} nanotubes were fabricated via anodic oxidation and hydrothermal method. The ZnFe{sub 2}O{sub 4}/TiO{sub 2} composite films with different concentrations were synthesized to explore the optimal photoelectrochemical property compared with pure TiO{sub 2} nanotubes. The morphology and chemical composition of samples were characterized by scanning electron microscopy, energy-dispersive spectrometry, and X-ray diffraction. The performance of protection for 304 stainless steel was investigated by electrochemical tests, such as open circuit potential and photocurrent density. The results indicate that ZnFe{sub 2}O{sub 4}/TiO{sub 2} composite films showed efficient photocathodic protection effect for 304 stainless steel under visible light, and the optimal specimen composite films shifted the corrosion potential of 304 stainless steel to −780 mV.

• OSTI ID: 22730454
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 95; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL COMPOSITION
DOPED MATERIALS
ELECTROCHEMISTRY
FILMS
HYDROTHERMAL SYNTHESIS
OXIDATION
SCANNING ELECTRON MICROSCOPY
SEMICONDUCTOR MATERIALS
STAINLESS STEEL-304
TITANIUM OXIDES
VISIBLE RADIATION
X-RAY DIFFRACTION