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Title: Increased photocatalytic activity of TiO 2 mesoporous microspheres from codoping with transition metals and nitrogen

Abstract

The composition of anatase TiO 2 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 TiO 2 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. As a result, the photocatalytic activity of the (Mn,N), (Co,N), (Cu,N), and Ni,N) codoped TiO 2 was significantly enhanced relative to (N) TiO 2.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1237636
Alternate Identifier(s):
OSTI ID: 1397675
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Ceramics International
Additional Journal Information:
Journal Volume: 42; Journal Issue: 1; Journal ID: ISSN 0272-8842
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; TiO2; codoped; diffuse reflectance; photocatalysis

Citation Formats

Mathis, John E., Lieffers, Justin J., Mitra, Chandrima, Reboredo, Fernando A., Bi, Z., Bridges, Craig A., Kidder, Michelle K., and Paranthaman, Mariappan Parans. Increased photocatalytic activity of TiO2 mesoporous microspheres from codoping with transition metals and nitrogen. United States: N. p., 2015. Web. doi:10.1016/j.ceramint.2015.10.164.
Mathis, John E., Lieffers, Justin J., Mitra, Chandrima, Reboredo, Fernando A., Bi, Z., Bridges, Craig A., Kidder, Michelle K., & Paranthaman, Mariappan Parans. Increased photocatalytic activity of TiO2 mesoporous microspheres from codoping with transition metals and nitrogen. United States. doi:10.1016/j.ceramint.2015.10.164.
Mathis, John E., Lieffers, Justin J., Mitra, Chandrima, Reboredo, Fernando A., Bi, Z., Bridges, Craig A., Kidder, Michelle K., and Paranthaman, Mariappan Parans. Fri . "Increased photocatalytic activity of TiO2 mesoporous microspheres from codoping with transition metals and nitrogen". United States. doi:10.1016/j.ceramint.2015.10.164. https://www.osti.gov/servlets/purl/1237636.
@article{osti_1237636,
title = {Increased photocatalytic activity of TiO2 mesoporous microspheres from codoping with transition metals and nitrogen},
author = {Mathis, John E. and Lieffers, Justin J. and Mitra, Chandrima and Reboredo, Fernando A. and Bi, Z. and Bridges, Craig A. and Kidder, Michelle K. and Paranthaman, Mariappan Parans},
abstractNote = {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. As a result, the photocatalytic activity of the (Mn,N), (Co,N), (Cu,N), and Ni,N) codoped TiO2 was significantly enhanced relative to (N) TiO2.},
doi = {10.1016/j.ceramint.2015.10.164},
journal = {Ceramics International},
number = 1,
volume = 42,
place = {United States},
year = {2015},
month = {11}
}

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