Onion-like carbon-modified TiO2 coating by suspension plasma spray with enhanced photocatalytic performances

  • Yaoyao Fu
  • Yi Liu
  • Hua LiEmail author
Research Paper


Onion-like carbon (OLC), a novel carbonaceous nanomaterial, has already attracted widespread concern due to its exceptional physicochemical properties. In this work, OLC nanoparticles (5–10 nm in diameter) were used as additives to fabricate nanotitania (TiO2) coatings by suspension plasma spray (SPS) for photocatalytic degrading methylene blue. The starting microstructure and chemistry of both OLC and TiO2 nanoparticles were retained after deposition process, and homogeneous dispersion of OLC in the coating was detected, which indicates SPS is an alternative and efficient technique to fabricate semiconductor-carbonaceous nanomaterials coatings. The new TiO2-OLC composite shows typical mesoporous structure. And aligned interfacial bond of OLC spheres with the (101) plane of anatase crystals was revealed. TiO2-OLC shows enhanced activity of degrading methylene blue under both UV and visible light irradiation than pure TiO2 coating. We have elucidated the enhancement mechanism from three aspects, namely, reduction of the bandgap, minimization of photo-induced-carriers recombination, and promotion of adsorption capacity for methylene blue.


Titania coating Onion-like carbon Nanoparticles Suspension plasma spray Photocatalytic performances Nanocomposites 


Funding information

This work was supported by Key Research and Development Program of Zhejiang Province (grant # 2017C01003), National Natural Science Foundation of China (grant # 41476064 and 31500772), and Zhejiang Provincial Natural Science Foundation of China (grant # LY18C100003).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  1. 1.Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboChina
  2. 2.Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijingChina

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