Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 53, Issue -, Pages 253-260Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2017.04.033
Keywords
Water splitting; Hydrogen production; Nitrogen doping; Multiphase TiO2; Photocatalysis
Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2016R1E1A1A01940995]
- Yeungnam University [216A345026]
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In order to maximize the photocatalytic production of hydrogen, it is desirable to develop an efficient photocatalyst with enhanced yield and visible sensitivity. To this end, we developed a novel method to synthesize nitrogen doped TiO2 with anatase/rutile/brookite mixed phases in aqueous urea solutions. The hydrogen production capacity of the nitrogen doped multiphase TiO2 (e.g., anatase (69%)/brookite (17%)/rutile (14%)), when assessed under solar light irradiation, was six times higher than that of commercial Degussa P25 and bare TiO2 catalysts. Such enhanced efficiency was ascribed to increased visible absorption along with effective electron hole separation between the different crystalline phases. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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