Preparation and characterization of N-S-codoped TiO(2) photocatalyst and its photocatalytic activity

Journal of Hazardous Materials
Fengyu WeiPeng Cui

Abstract

N-S-codoped anatase nanosized TiO(2) photocatalyst (NSTO) was successfully prepared by one-step hydrothermal method from a mixed aqueous solution of Ti(SO(4))(2) and thiourea. The samples were characterized by XRD, UV-vis, XPS, FT-IR and EA. From results of UV-vis, a red shift of the absorption edge was brought out owing to N and S codoping, and the extension for photoabsorption range of NSTO occurred. XRD, XPS, EA and FT-IR studies revealed that N and S were in situ codoped in the lattice of TiO(2) and N concentration decreased from the surface to the center of NSTO. Especially, the photocatalytic tests indicated that NSTO exhibited a high activity for decompositions of methyl orange both under UV-light and vis-light irradiation comparing to S-doped TiO(2) (STO) and undoped TiO(2) (TO). The high activity of NSTO can be related to the results of the synergetic effects of strong absorption in the UV-vis region, red shift in adsorption edge, oxygen vacancies and the enhancement of surface acidity induced by N and S codoping.

References

Jul 21, 2006·The Journal of Physical Chemistry. B·Revathi BacsaVictor Nadtochenko

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Citations

Oct 15, 2014·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Peter J KellyJoanna Verran
Sep 6, 2008·Journal of Hazardous Materials·Yan LiuXiao Fei Xu
Jun 5, 2016·Environmental Science and Pollution Research International·Xin WangJingke Song
Jun 16, 2015·Physical Chemistry Chemical Physics : PCCP·Junho ChungSeung-Yeop Kwak
Jun 9, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·A M AbdullahKevin O'Shea
Nov 16, 2019·Beilstein Journal of Nanotechnology·Xiao-Yu SunYong-Qing Ma
Jul 7, 2018·Beilstein Journal of Nanotechnology·Boštjan ŽenerRomana Cerc Korošec
Mar 17, 2011·Physical Review Letters·Wan-Jian YinYanfa Yan
May 4, 2010·Environmental Science & Technology·K M ParidaV S Kamble
Oct 11, 2021·Environmental Science and Pollution Research International·Carolina de Araújo GusmãoAntonio Carlos Silva Costa Teixeira

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