Magnetic Nanoscaled Fe 3 O 4 /CeO 2 Composite as an Efficient Fenton-Like Heterogeneous Catalyst for Degradation of 4-Chlorophenol
Tsinghua University · State Key Joint Laboratory of Environment Simulation and Pollution Control
Abstract
Magnetic nanoscaled Fe(3)O(4)/CeO(2) composite was prepared by the impregnation method and characterized as a heterogeneous Fenton-like catalyst for 4-chlorophenol (4-CP) degradation. The catalytic activity was evaluated in view of the effects of various processes, pH value, catalyst addition, hydrogen peroxide (H(2)O(2)) concentration, and temperature, and the pseudo-first-order kinetic constant of 0.11 min(-1) was obtained for 4-CP degradation at 30 °C and pH 3.0 with 30 mM H(2)O(2), 2.0 g L(-1) Fe(3)O(4)/CeO(2), and 0.78 mM 4-CP. The high utilization efficiency of H(2)O(2), calculated as 79.2%, showed a promising application of the catalyst in the oxidative degradation of organic pollutants. The reusability…
Citation impact
- FWCI
- 45.97
- Percentile
- 100%
- References
- 52
Authors
2Topics & keywords
- Catalysis
- Hydrogen peroxide
- X-ray photoelectron spectroscopy
- Leaching (pedology)
- Chemistry
- Radical
- Dissolution
- Composite number