4 / 10
Page 25
Notes:
conferenceseries
.com
Volume 9
Journal of Chemical Engineering & Process Technology
Catalysis 2018
September 05-06, 2018
September 05-06, 2018 Tokyo, Japan
5
th
World Congress on
Catalysis and Chemical Engineering
Tiefeng Xu et al., J Chem Eng Process Technol 2018, Volume 9
DOI: 10.4172/2157-7048-C2-015
Visible-light-assisted peroxymonosulfate activation and novel mechanism for degradation of
contaminants over g-C
3
N
4
coordinating with iron(II) phthalocyanine catalyst
Tiefeng Xu, Fei Wu, Wangyang Lu, Nan Li and Wenxing Chen
Zhejiang Sci-Tech University, China
R
ecently, Peroxymonosulfate (PMS)-basedAdvancedOxidationProcesses (AOPs) have received increasing attention because
of their capability and adaptability in decontamination. The couple of solar light and PMS activation is an environmentally
friendly and efficient strategy for environmental remediation. Herein, the iron hexadecachlorophthalocyanine (FePcCl16) was
used to coordinate with graphitic carbon nitride (g-C
3
N
4
), which was functionalized by pyridine-based ligand Isonicotinic Acid
(INA) to prepare a distinctive catalyst, g-C
3
N
4
-INA-FePcCl16. The experimental results revealed that g-C
3
N
4
-INA-FePcCl16
can activate PMS efficiently for the elimination of Carbamazepine (CBZ) under visible light irradiation over a wide pH range.
Upon irradiation with visible light, CBZ was destroyed by the solider g-C
3
N
4
with generated sulfate (SO
4
•−
) and hydroxyl (•OH)
radicals, on the other hand, high-valent iron (Fe (IV)=O) species accompanied by SO
4
•−
and •OH radicals were produced by
excited-state FePcCl16 (*FePcCl16) during oxidation, which is different from a traditional PMS activation system. The axial
pyridine-based ligand was protected under the FePcCl16 macrocyclic structure shield. Noteworthy, in the absence of visible
light, g-C
3
N
4
-INA-FePcCl16 showed a higher catalytic performance than pure g-C
3
N
4
, FePcCl16 and a mechanical mixture
of the two. This study allows for the construction of an effective and environmental catalytic system, which can be applied to
purify water that contains refractory pollutants.
Biography
Tiefeng Xu has graduated in Textile Fiber Materials & Processing Technology, Zhejiang Sci-Tech University, China. Her research interests are focused on
photoelectrochemistry, photocatalysis and photoreactors.
xutiefeng@foxmail.com