PMID- 27219049
OWN - NLM
STAT- MEDLINE
DCOM- 20170505
LR  - 20171128
IS  - 1879-2448 (Electronic)
IS  - 0043-1354 (Linking)
VI  - 100
DP  - 2016 Sep 1
TI  - Synthesis of magnetically separable Bi2O4/Fe3O4 hybrid nanocomposites with 
      enhanced photocatalytic removal of ibuprofen under visible light irradiation.
PG  - 393-404
LID - S0043-1354(16)30327-X [pii]
LID - 10.1016/j.watres.2016.05.026 [doi]
AB  - Ibuprofen (IBU) is one of the representative persistent organic pollutants (POPs) 
      which can cause severe adverse effects in humans and wildlife. Therefore, 
      effectively removing IBU from water is a worldwide necessity. In this study, a 
      novel superparamagnetic Bi2O4/Fe3O4 nanocomposite was successfully prepared by an 
      in-situ growth method and utilized for photocatalytic removal of IBU. The 
      structural characterization of the Bi2O4/Fe3O4 nanocomposite indicates that the 
      monodisperse Fe3O4 nanoparticles of diameter 10 nm are highly assembled on the 
      Bi2O4 nanorods of diameter 120 nm. Under visible light irradiation, using an 
      optimum molar ratio of Bi2O4/Fe3O4 (1:2.5) resulted in a complete photocatalytic 
      degradation of IBU within 2 h, which is a 1.7 times higher efficiency than pure 
      Bi2O4, and a complete mineralization of IBU with a prolonged irradiation time of 
      4 h. In addition, the potential practicality of Bi2O4/Fe3O4 (1:2.5) was also 
      demonstrated by the efficient photocatalytic degradation of IBU in actual 
      drinking water. The photocatalytic mechanisms of Bi2O4/Fe3O4 (1:2.5) were 
      revealed, indicating that the enhanced photocatalytic performance was mainly 
      attributed to the accelerated separation of electron-hole pairs after surface 
      modification of Fe3O4, and that the photogenerated h(+) was the primary reactive 
      species for the photocatalytic removal of IBU. Furthermore, the Bi2O4/Fe3O4 
      (1:2.5) can be magnetically recycled and shows good reusability without 
      significant loss of photocatalytic activity or structural change even after reuse 
      over five cycles, showing a promising application for the photocatalytic 
      degradation of POPs from water.
CI  - Copyright (c) 2016 Elsevier Ltd. All rights reserved.
FAU - Xia, Dehua
AU  - Xia D
AD  - Department of Civil and Environmental Engineering, The Hong Kong University of 
      Science and Technology, Hong Kong, China.
FAU - Lo, Irene M C
AU  - Lo IMC
AD  - Department of Civil and Environmental Engineering, The Hong Kong University of 
      Science and Technology, Hong Kong, China. Electronic address: cemclo@ust.hk.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20160509
PL  - England
TA  - Water Res
JT  - Water research
JID - 0105072
RN  - WK2XYI10QM (Ibuprofen)
SB  - IM
MH  - Catalysis
MH  - *Ibuprofen
MH  - Light
MH  - Magnetics
MH  - Nanocomposites/*chemistry
OTO - NOTNLM
OT  - Ibuprofen
OT  - Magnetic nanocomposites
OT  - Persistent organic pollutants
OT  - Photocatalytic degradation
OT  - Visible light irradiation
EDAT- 2016/05/25 06:00
MHDA- 2017/05/06 06:00
CRDT- 2016/05/25 06:00
PHST- 2015/12/04 00:00 [received]
PHST- 2016/04/13 00:00 [revised]
PHST- 2016/05/02 00:00 [accepted]
PHST- 2016/05/25 06:00 [entrez]
PHST- 2016/05/25 06:00 [pubmed]
PHST- 2017/05/06 06:00 [medline]
AID - S0043-1354(16)30327-X [pii]
AID - 10.1016/j.watres.2016.05.026 [doi]
PST - ppublish
SO  - Water Res. 2016 Sep 1;100:393-404. doi: 10.1016/j.watres.2016.05.026. Epub 2016 
      May 9.