The preparation of the Co/C co-doped nano TiO₂ and its photocatalytic activity

ABSTRACT

To promote the photodegradation efficiency, TiO₂ (C/TiO₂), cobalt doped TiO₂ (Co/TiO₂) and cobalt and carbon co-doped TiO₂ (Co-C/TiO₂) nanoparticles were synthesized using sol-gel method and characterized with scanning electron microscope (SEM), Energy Dispersive Spectroscopy (EDS), X-Ray Diffraction (XRD), Ultraviolet-visible spectroscopy (UV-vis) and the specific surface area test. XRD results showed the catalysts mainly exist in anatase type; UV-vis spectroscopy revealed the band-gap of the Co/C co-doped TiO₂ decreased than the pure TiO₂, the absorption band edge show a red shift. The photocatalytic activity of the Co/C co-doped TiO₂ was studied with degradation of the sodium pentachlorophenol. The degradation rate of the C/Co-doped TiO₂ to the sodium pentachlorophenol is more than 85%.

KEYWORDS:

• Co/C co-doped TiO₂
• nano TiO₂
• preparation
• characterization
• photocatalytic activity

Funding

This work was supported by Natural Science Basic Research Plan in Shaanxi Province of China (No. 2014JM8339) and National Natural Science Foundation of China (No. 61405159).