Use of co-spray pyrolysis for synthesizing nitrogen-doped TiO2 films

Bulletin of materials science

Pham Hoang Ngan¹  Nho Pham Van² 

[1] DTU Energy Conversion, 4000 Roskilde, Denmark$$DTU Energy Conversion, 4000 Roskilde, DenmarkDTU Energy Conversion, 4000 Roskilde, Denmark$$;VNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam$$VNU University of Science, 334 Nguyen Trai, Hanoi, VietnamVNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam$$

关键词: TiO2;    co-spray pyrolysis;    nitrogen-doping;    photocatalytic activity;    visible light responsibility.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Nitrogen-doped nanocrystalline TiO₂ is well known as the most promising photocatalyst. Despite many years after discovery, seeking of efficient method to prepare TiO₂ doped with nitrogen still attracts a lot of attention. In this paper, we present the result of using co-spray pyrolysis to synthesize nitrogen-doped TiO₂ films from TiCl₄ and NH₄NO₃. The grown films were subjected to XRD, SEM, photocatalysis, absorption spectra and visible-light photovoltaic investigations. All the deposited films were of nanosized polycrystal, high crystallinity, pure anatase and porosity. Specific characteristics involved nitrogen doping such as enhanced photocatalytic activity, bandgap narrowing, visible light responsibility and typical correlation of the photoactivity with nitrogen concentration were all exhibited. Obtained results proved that high photoactive nitrogen-doped TiO₂ films can be synthesized by co-spray pyrolysis.

【 授权许可】

Unknown