Jump to main content
Jump to site search


Enhanced visible light harnessing and oxygen vacancy promoted N, S co-doped CeO2 nanoparticle: A challenging photocatalyst for Cr(VI) reduction

Abstract

Nano ceria and its derivatives are promising photocatalyst for environmental sustainability due to their strong redox ability, high oxygen storage/release capacity, ecofriendly, photostable and cost effective nature. This manuscript highlights the first prepared N/S codoped ceria by simple hydrothermal method from Ce(NO)3 and thiourea source. The spectrographic, crystallographic and macroscopic features of the as synthesised photocatalysts were characterised by TEM, DRUV-vis, PL, TRPL, XRD, Raman and photoelectrochemical measurements. Under visible light illumination doped ceria exhibits remarkable photocatalytic activity towards Cr(VI) reduction contrast to neat CeO2. The enhanced photoreduction ability of doped species particularly 36 h treated sample(NCS-36) is due to more light absorption capacity, greater photocurrent generation and high concentration of photoexcited electron, which were well supported by characterization techniques. The average life time decay of photoexcited electrons and photocurrent density of NCS-36 was found to be 75.37ps and 3.87mA/cm2 that is nearly 3 and 12 times higher than neat ceria respectively. These obtained results clearly explain the 93% photoreduction ability of NCS-36 towards 50ppm Cr (VI) solution within a time laps of 120mins under visible light irradiation.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 15 Mar 2017, accepted on 08 May 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7CY00499K
Citation: Catal. Sci. Technol., 2017, Accepted Manuscript
  •   Request permissions

    Enhanced visible light harnessing and oxygen vacancy promoted N, S co-doped CeO2 nanoparticle: A challenging photocatalyst for Cr(VI) reduction

    S. Mansingh, D. K. Padhi and K. Parida, Catal. Sci. Technol., 2017, Accepted Manuscript , DOI: 10.1039/C7CY00499K

Search articles by author