CeCu composite oxide for chlorophenol effective removal by heterogeneous catalytic wet peroxide oxidation
发布时间：2024-12-01
点击次数：
- 影响因子：
- 4.223
- DOI码：
- 10.1007/s11356-019-07042-5
- 所属单位：
- 重庆工商大学
- 发表刊物：
- Environmental Science and Pollution Research
- 项目来源：
- 重庆市科技局，重庆工商大学
- 关键字：
- Catalytic wet peroxide oxidation (CWPO)；4-Chlorophenol；2,4-Dichlorophenol；CeCu oxide catalyst；Solid solution；Waste water
- 摘要：
- CeCu solid solution oxide catalysts were prepared by the complex method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), and X-ray photoelectron spectroscopy (XPS). And its activity in the catalytic wet peroxide oxidation (CWPO) of 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) in water was investigated. The results showed that the Cu2+ ions dissolved into the CeO2 lattice to form CeCu solid solution oxide with a coarse, interconnected, porous, and cotton-like morphology. The metal-oxygen bonds were weakened by the formation of solid solution in the CeCu oxide catalyst. This weakening facilitated the activation and decomposition of the H2O2 to form highly oxidative HO• species that can lead to significant chlorophenol mineralization. The formation of CeCu solid solution oxide can effectively inhibit the Cu ions to be leached from the used CeCu oxide catalysts, which can ensure the CeCu oxide catalysts to adapt to a wide pH range of 2.1–7.9 and exhibit good reusability. CWPO reaction of 4-CP and 2,4-DCP molecules on CeCu oxide catalysts conforms to the first-order kinetic equation: y = 6959.3x − 17.2 and y = 9725x − 25.4, respectively. And the reaction activation energies are 57.8 and 80.8 kJ/mol, respectively. The TOC removals of 4-CP and 2,4-DCP can exceed 88 and 82%, and the dechlorination rates of 4-CP and 2,4-DCP are higher than 95 and 99.5%, respectively.
- 第一作者：
- Hongmei Xie
- 合写作者：
- Jia Zeng
- 论文类型：
- 源刊论文
- 通讯作者：
- Guilin Zhou
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 27
- 期号：
- 1
- 页面范围：
- 846–860
- 是否译文：
- 否
- 发表时间：
- 2020-01-01
- 收录刊物：
- SCI