Abstract
Fe3O4 nanospheres with uniformly distributed Pd nanoparticles (Fe3O4-Pd) were prepared and used to catalyze the electrochemical-heterogeneous Fenton (EC-HF) degradation of pentachlorophenol (PCP). Synthesis of the catalyst was confirmed by X-ray diffraction and high-resolution transmission electron microscopy/energy-dispersive X-ray spectroscopy. The catalytic performance of the developed catalyst was assessed and the roles of Pd in the mechanism of Fe ion leaching and PCP degradation enhancement were elucidated. The conditions of 5V, pH 2.3, and 288K gave a removal efficiency of 100% within 30min with the catalyst, compared with 17.2% for the EC process alone. Pd nanoparticles altered the Fe leaching mechanism and enhanced both homogeneous and heterogeneous Fenton reactions when they were loaded on the Fe3O4 surface. The effects of operating conditions such as applied potential, pH, catalyst dose, solution temperature and initial PCP concentration were investigated. The results showed that a higher applied potential and solution temperature favored larger kinetic constants, whereas kinetic constants decreased with increasing solution pH. As the initial PCP concentration increased, the initial degradation rate increased while the kinetic constant decreased. The optimal catalyst dose was 50ppm. In addition, the Fe3O4-Pd reusability was evaluated.
| Original language | English |
|---|---|
| Pages (from-to) | 1165-1173 |
| Number of pages | 9 |
| Journal | Chemical Engineering Journal |
| Volume | 284 |
| DOIs | |
| Publication status | Published - 2016 Jan 15 |
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Keywords
- Electrochemical-Fenton process
- Heterogeneous catalyst
- Magnetite
- Palladium
- Pentachlorophenol
ASJC Scopus subject areas
- Chemical Engineering(all)
- Chemistry(all)
- Industrial and Manufacturing Engineering
- Environmental Chemistry
Cite this
Development and application of Fe3O4-Pd nanospheres as catalyst for electrochemical-heterogeneous Fenton process. / Kim, Kyungho; Qiu, Pengpeng; Cui, Mingcan; Khim, Jeehyeong.
In: Chemical Engineering Journal, Vol. 284, 15.01.2016, p. 1165-1173.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Development and application of Fe3O4-Pd nanospheres as catalyst for electrochemical-heterogeneous Fenton process
AU - Kim, Kyungho
AU - Qiu, Pengpeng
AU - Cui, Mingcan
AU - Khim, Jeehyeong
PY - 2016/1/15
Y1 - 2016/1/15
N2 - Fe3O4 nanospheres with uniformly distributed Pd nanoparticles (Fe3O4-Pd) were prepared and used to catalyze the electrochemical-heterogeneous Fenton (EC-HF) degradation of pentachlorophenol (PCP). Synthesis of the catalyst was confirmed by X-ray diffraction and high-resolution transmission electron microscopy/energy-dispersive X-ray spectroscopy. The catalytic performance of the developed catalyst was assessed and the roles of Pd in the mechanism of Fe ion leaching and PCP degradation enhancement were elucidated. The conditions of 5V, pH 2.3, and 288K gave a removal efficiency of 100% within 30min with the catalyst, compared with 17.2% for the EC process alone. Pd nanoparticles altered the Fe leaching mechanism and enhanced both homogeneous and heterogeneous Fenton reactions when they were loaded on the Fe3O4 surface. The effects of operating conditions such as applied potential, pH, catalyst dose, solution temperature and initial PCP concentration were investigated. The results showed that a higher applied potential and solution temperature favored larger kinetic constants, whereas kinetic constants decreased with increasing solution pH. As the initial PCP concentration increased, the initial degradation rate increased while the kinetic constant decreased. The optimal catalyst dose was 50ppm. In addition, the Fe3O4-Pd reusability was evaluated.
AB - Fe3O4 nanospheres with uniformly distributed Pd nanoparticles (Fe3O4-Pd) were prepared and used to catalyze the electrochemical-heterogeneous Fenton (EC-HF) degradation of pentachlorophenol (PCP). Synthesis of the catalyst was confirmed by X-ray diffraction and high-resolution transmission electron microscopy/energy-dispersive X-ray spectroscopy. The catalytic performance of the developed catalyst was assessed and the roles of Pd in the mechanism of Fe ion leaching and PCP degradation enhancement were elucidated. The conditions of 5V, pH 2.3, and 288K gave a removal efficiency of 100% within 30min with the catalyst, compared with 17.2% for the EC process alone. Pd nanoparticles altered the Fe leaching mechanism and enhanced both homogeneous and heterogeneous Fenton reactions when they were loaded on the Fe3O4 surface. The effects of operating conditions such as applied potential, pH, catalyst dose, solution temperature and initial PCP concentration were investigated. The results showed that a higher applied potential and solution temperature favored larger kinetic constants, whereas kinetic constants decreased with increasing solution pH. As the initial PCP concentration increased, the initial degradation rate increased while the kinetic constant decreased. The optimal catalyst dose was 50ppm. In addition, the Fe3O4-Pd reusability was evaluated.
KW - Electrochemical-Fenton process
KW - Heterogeneous catalyst
KW - Magnetite
KW - Palladium
KW - Pentachlorophenol
UR - http://www.scopus.com/inward/record.url?scp=84943625490&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84943625490&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2015.09.035
DO - 10.1016/j.cej.2015.09.035
M3 - Article
VL - 284
SP - 1165
EP - 1173
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
ER -