An efficient visible and UV-light-activated B–N-codoped TiO2 photocatalytic film for solar depollution prepared via a green method

  • Qing Chi Xu
  • Yan Zhang
  • Ziming He
  • Say Chye Joachim LooEmail author
  • Timothy Thatt Yang TanEmail author
Research Paper


This work reports an efficient visible and UV-light-activated boron and nitrogen codoped TiO2 porous film prepared via a “green” and direct coating approach. Such photocatalyst is highly promising for solar depollution application due to its efficient photocatalytic activities in both visible and UV spectrum. The preparation method avoids the use of organic solvents, which are usually more expensive and hazardous compared with water. Using stearic acid as the model organic pollutant, the visible-light photocatalytic activity of optimized porous B–N-codoped TiO2 film (p-3B–N–TiO2) is 3 times higher than that of porous N-doped TiO2 (p-N–TiO2) film, while its UV photocatalytic activity is almost double that of p-N–TiO2 film and comparable to that of porous TiO2. The enhancement in photocatalytic activity is attributed to higher surface area due to the porous structure, improved visible-light absorption attributed to interstitially substituted boron atoms, and coexistence of boron and nitrogen dopants which may reduce Ti3+ recombination centers.


Co-doped TiO2 Boron Nitrogen Photocatalysis Solar depollution 



Financial support from Nanyang Technological University AcRF Tier 1 RG29/07 is acknowledged.


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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.School of Chemical and Biomedical EngineeringNanyang Technological UniversitySingaporeSingapore
  2. 2.School of Materials Science and EngineeringNanyang Technological UniversitySingaporeSingapore
  3. 3.Environmental & Water Technology Centre of InnovationNgee Ann PolytechnicSingaporeSingapore
  4. 4.Solar Fuels Lab, School of Material Science and EngineeringNanyang Technological UniversitySingaporeSingapore

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