Synthesis of magnetically separable core@shell structured NiFe2O4@TiO2 nanomaterial and its use for photocatalytic hydrogen production by methanol/water splitting

Title
Synthesis of magnetically separable core@shell structured NiFe2O4@TiO2 nanomaterial and its use for photocatalytic hydrogen production by methanol/water splitting
Author(s)
강미숙김현수김동진곽병섭한기보[한기보]엄명헌[엄명헌]
Keywords
THIN-FILMS; NICKEL FERRITE; BAND-GAP; NANOPARTICLES; ANATASE; TIO2; NI; DECOMPOSITION; NANOCRYSTALS; DEGRADATION
Issue Date
201405
Publisher
ELSEVIER SCIENCE SA
Citation
CHEMICAL ENGINEERING JOURNAL, v.243, pp.272 - 279
Abstract
In this study, an attempt was made to modify the magnetic and photocatalytic properties of a semiconductor material to enhance the efficiency of hydrogen production and to enable photocatalyst separation. A core@shell structured NiFe2O4@TiO2 magnetic nanoparticle was prepared and characterized using various analytical tools, and its UV induced photocatalytic activity was assessed. The significant enhancement in photoactivity was attributed to synergism between NiFe2O4 and TiO2, that is, to effective charge transfer from TiO2 to NiFe2O4 and the suppression of electron/hole pair recombination. Hydrogen production from the photo-splitting methanol/water solution was greater than 10 times after 8 h for the core@shell structured NiFe2O4@TiO2 nanocatalyst than for either pure TiO2 or NiFe2O4. (C) 2014 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/32231http://dx.doi.org/10.1016/j.cej.2013.12.046
ISSN
1385-8947
Appears in Collections:
이과대학 > 화학생화학부 > Articles
문과대학 > 중국언어문화학과 > Articles
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