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g-C3N4/TiO2 hybrid film on the metal surface, a cheap and efficient sunlight active photoelectrochemical anticorrosion coating

  • De Ding
  • Qiankun Hou
  • Yaoguo Su
  • Qianqian Li
  • Lei Liu
  • Jiang Jing
  • Bin LinEmail author
  • Yin ChenEmail author
Article
  • 6 Downloads

Abstract

A solar light active photoelectrochemical anticorrosion paint was prepared by dispersing g-C3N4 nanomaterial in 0.05 M TiO(Acac)2 solution. The paint can form uniform film on the metal surface after paralysis, which can provide effective cathodic protection for 304 SS under visible light irradiation. UV–Vis, Powder XRD, IR and EDS characterization identified that the film was composed by g-C3N4 and amorphous TiO2; After coating the g-C3N4/TiO2 film, which has a thickness around 12 um as shown by SEM, a photo-potential up to 0.20 V was observed for the metal specimen under visible light illumination (30mW/cm2) in 3% NaCl solution. The photo-potential can be accumulated with the irradiation time and held for many hours after removing the light illumination. Effective full-day cathodic protection for 304 SS can be provided by this g-C3N4/TiO2 coating.

Notes

Acknowledgement

We thanks the financial support from NSF of China (21602258), Central South University (502035002, 502044001), Talents Program of Hunan Province, Natural Science Foundation of Hunan Province (2017JJ3400). D. D. thanks the financial support from the State Grid.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Shaanxi Electric Power Research InstituteXi’anChina
  2. 2.Central South University, College of Chemistry and Chemical EngineeringChangshaChina
  3. 3.School of Materials and EnergyUniversity of Electronic Science and Technology of ChinaChengduChina

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