Increased photocatalytic activity of TiO2 mesoporous microspheres from codoping with transition metals and nitrogen

J. E. Mathis; J. J. Lieffers; C. Mitra; F. A. Reboredo; Z. Bi; C. A. Bridges; M. K. Kidder; M. P. Paranthaman

doi:10.1016/j.ceramint.2015.10.164

Increased photocatalytic activity of TiO₂ mesoporous microspheres from codoping with transition metals and nitrogen

J. E. Mathis, J. J. Lieffers, C. Mitra, F. A. Reboredo, Z. Bi, C. A. Bridges, M. K. Kidder, M. P. Paranthaman

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

The composition of anatase TiO₂ was modified by codoping using combinations of a transition metal and nitrogen in order to increase its photocatalytic activity and extend it performance in the visible region of the electromagnetic spectrum. The transition metals (Mn, Co, Ni, Cu) were added during the hydrothermal preparation of mesoporous TiO₂ particles, and the nitrogen was introduced by post-annealing in flowing ammonia gas at high temperature. The samples were analyzed by SEM, XRD, BET, inductively-coupled plasma spectroscopy, and diffuse reflectance UV–vis spectroscopy. The photocatalytic activity was assessed by observing the change in methylene blue concentrations under both UV–vis and visible-only light irradiation. The photocatalytic activity of the (Mn,N), (Co,N), (Cu,N), and Ni,N) codoped TiO₂ was significantly enhanced relative to (N) TiO₂.

Original language	English
Pages (from-to)	3556-3562
Number of pages	7
Journal	Ceramics International
Volume	42
Issue number	2
DOIs	https://doi.org/10.1016/j.ceramint.2015.10.164
State	Published - 2016

Funding

Materials synthesis work was sponsored by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division . Characterization work was supported by Oak Ridge National Laboratory’s CNMS User Facility , which is sponsored by the Scientific User Facility Division, Office of Basic Energy Sciences, U. S. Department of Energy . JM and JL are supported by ORISE through U.S. Department of Energy-Visiting Faculty Program (VFP) . MKK acknowledges the support of the U.S. Department of Energy, Office of Basic Energy Science, Chemical Sciences, Geosciences, and Biosciences Division . Thanks are due to C. N. Sun and G. M. Veith for assistance with BET measurements, to G. E. Jellison for providing instruments for the photocatalytic measurements, and R. A. Caruso for useful discussions.

Funders	Funder number
U.S. Department of Energy-Visiting
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Oak Ridge National Laboratory
Oak Ridge Institute for Science and Education
Division of Materials Sciences and Engineering
Chemical Sciences, Geosciences, and Biosciences Division

Keywords

Codoped
D: TiO
Diffuse reflectance
Photocatalysis

Access to Document

10.1016/j.ceramint.2015.10.164

Cite this

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title = "Increased photocatalytic activity of TiO2 mesoporous microspheres from codoping with transition metals and nitrogen",

abstract = "The composition of anatase TiO2 was modified by codoping using combinations of a transition metal and nitrogen in order to increase its photocatalytic activity and extend it performance in the visible region of the electromagnetic spectrum. The transition metals (Mn, Co, Ni, Cu) were added during the hydrothermal preparation of mesoporous TiO2 particles, and the nitrogen was introduced by post-annealing in flowing ammonia gas at high temperature. The samples were analyzed by SEM, XRD, BET, inductively-coupled plasma spectroscopy, and diffuse reflectance UV–vis spectroscopy. The photocatalytic activity was assessed by observing the change in methylene blue concentrations under both UV–vis and visible-only light irradiation. The photocatalytic activity of the (Mn,N), (Co,N), (Cu,N), and Ni,N) codoped TiO2 was significantly enhanced relative to (N) TiO2.",

keywords = "Codoped, D: TiO, Diffuse reflectance, Photocatalysis",

author = "Mathis, {J. E.} and Lieffers, {J. J.} and C. Mitra and Reboredo, {F. A.} and Z. Bi and Bridges, {C. A.} and Kidder, {M. K.} and Paranthaman, {M. P.}",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier Ltd and Techna Group S.r.l.",

year = "2016",

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T1 - Increased photocatalytic activity of TiO2 mesoporous microspheres from codoping with transition metals and nitrogen

AU - Mathis, J. E.

AU - Lieffers, J. J.

AU - Mitra, C.

AU - Reboredo, F. A.

AU - Bi, Z.

AU - Bridges, C. A.

AU - Kidder, M. K.

AU - Paranthaman, M. P.

PY - 2016

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N2 - The composition of anatase TiO2 was modified by codoping using combinations of a transition metal and nitrogen in order to increase its photocatalytic activity and extend it performance in the visible region of the electromagnetic spectrum. The transition metals (Mn, Co, Ni, Cu) were added during the hydrothermal preparation of mesoporous TiO2 particles, and the nitrogen was introduced by post-annealing in flowing ammonia gas at high temperature. The samples were analyzed by SEM, XRD, BET, inductively-coupled plasma spectroscopy, and diffuse reflectance UV–vis spectroscopy. The photocatalytic activity was assessed by observing the change in methylene blue concentrations under both UV–vis and visible-only light irradiation. The photocatalytic activity of the (Mn,N), (Co,N), (Cu,N), and Ni,N) codoped TiO2 was significantly enhanced relative to (N) TiO2.

AB - The composition of anatase TiO2 was modified by codoping using combinations of a transition metal and nitrogen in order to increase its photocatalytic activity and extend it performance in the visible region of the electromagnetic spectrum. The transition metals (Mn, Co, Ni, Cu) were added during the hydrothermal preparation of mesoporous TiO2 particles, and the nitrogen was introduced by post-annealing in flowing ammonia gas at high temperature. The samples were analyzed by SEM, XRD, BET, inductively-coupled plasma spectroscopy, and diffuse reflectance UV–vis spectroscopy. The photocatalytic activity was assessed by observing the change in methylene blue concentrations under both UV–vis and visible-only light irradiation. The photocatalytic activity of the (Mn,N), (Co,N), (Cu,N), and Ni,N) codoped TiO2 was significantly enhanced relative to (N) TiO2.

KW - Codoped

KW - D: TiO

KW - Diffuse reflectance

KW - Photocatalysis

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