Jump to main content
Jump to site search


Facile preparation of Ti3+ self-doped TiO2 nanoparticles and their dramatic visible photocatalytic activity for fast restoration of highly concentrated Cr(VI) effluent

Abstract

In the present work, Ti3+ self-doped TiO2 nanoparticles were prepared in a simple one-pot solvothermal process. Meanwhile, the photocatalytic activity of the as-prepared TiO2 nanoparticles was explored under visible light irradiation for the restoration of effluent containing Cr (VI). At last, the photocatalytic mechanism was discussed preliminarily. The results show that the Ti3+ self-doped TiO2 nanoparticles obtained are an efficient visible photocatalyst for the reduction of Cr (VI). When the concentration of Cr (VI) is 10 mg L-1, about 95% Cr (VI) can be removed within 1 min. More interested, the aforementioned TiO2 nanoparticles are a promising candidate with remarkable visible photocatalytic activity for the fast restoration of highly concentrated Cr (VI) effluent. When the concentration of Cr (VI) is 34 mg L-1, the reduction ratio of Cr(VI) is approximately 95% after 12 min visible irradiation. Even if the concentration of Cr (VI) is very high (104 mg L-1), the reduction ratio of Cr (VI) is still up to 94% after 5 h irradiation. Our work provides a new strategy for designing an efficient visible photocatalyst which is suitable for rapid removal of highly concentrated Cr (VI) in environmental therapy.

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Jan 2019, accepted on 02 Apr 2019 and first published on 03 Apr 2019


Article type: Paper
DOI: 10.1039/C9CY00161A
Citation: Catal. Sci. Technol., 2019, Accepted Manuscript

  •   Request permissions

    Facile preparation of Ti3+ self-doped TiO2 nanoparticles and their dramatic visible photocatalytic activity for fast restoration of highly concentrated Cr(VI) effluent

    W. Hao, X. Li, L. Qin, S. Han and S. Kang, Catal. Sci. Technol., 2019, Accepted Manuscript , DOI: 10.1039/C9CY00161A

Search articles by author

Spotlight

Advertisements