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conferenceseries
.com
Joint Conference
July 17-18, 2017 Chicago, USA
International Conference on
DIAMOND AND CARBON MATERIALS & GRAPHENE AND SEMICONDUCTORS
Volume 6, Issue 6 (Suppl)
J Material Sci Eng, an open access journal
ISSN: 2169-0022
Diamond and Carbon 2017 & Graphene 2017
July 17-18, 2017
Ionic liquid-stabilized graphene and its use in decorated with Co nanocatalyst towards
chlorinated organic pollutants degradation
Dandan Xu
1
, Hui Wang
1
and
Zhaoyong Bian
2
1
Beijing Forestry University, China
2
Beijing Normal University, China
T
remendous efforts have been devoted to find methods with high-efficient and low-cost to remove chlorinated organic
pollutant from aqueous solutions. Metal nanoparticles modified graphene materials have attracted considerable attention,
but the limitation is the difficulty in depositing metal nanoparticles with uniform size and good dispersion on graphene surface.
Ionic liquid (IL) shows potential for overcoming some of the above mentioned issues due to their high chemical and thermal
stability, negligible vapor pressure, high conductivity and wide electrochemical window. This paper involved functionalization
of graphene samples with IL ([Bmin][BF4]) and in situ reduction of cobalt precursors to improved their electrocatalytic
performance and application on electrochemical degradation of chlorinated organic pollutants. Several characterization
methods such as XRD, SEMandXPSwere used to analyze prepared samples crystal structures, surfacemorphology, composition
and nanoparticles size. XPS measurement showed the wide survey XPS pattern of catalyst, which indicated the coexistence of
C, N, O and Co in the catalyst, and element N was originated from the IL. The sizes of Co nanoparticles on Co/IL-graphene
(3.33 nm) was smaller than that on Co/graphene (6.60 nm) due to stabilization of IL. Electrocatalytic measurements revealed
Co/IL-graphene catalysts displayed enhanced current response compared with Co/graphene samples. And a strong reduction
peak at 0.036 V presented for Co/IL-graphene which was quite different from the Co/graphene catalyst. It indicated that the Co
nanoparticles IL functionalized graphene had a significant electrocatalytic activity. The addition of IL can not only improve the
dispersity of Co nanoparticle, but also increase the active sites. The Co/IL-graphene nanocomposite will be suitable materials
for degradation of chlorinated organic pollutants in aqueous solutions.
Biography
Dandan Xu is a Doctoral Candidate of Ecological Environment Engineering at Beijing Forestry University. She has been committed to environmental profession
for 9 years. She has her expertise in electrochemical process to treat organic pollutants from the graduate studies. Her work on preparing electrocatalytic cathode
based on ionic liquid creates new aspect for improving electrocatalytic performance. She has participated in several international conferences in many cities.
249994643@qq.comDandan Xu et al., J Material Sci Eng 2017, 6:6(Suppl)
DOI: 10.4172/2169-0022-C1-076