MnFe2O4 decorated graphene as a heterogeneous catalyst for efficient degradation of di-n-butyl phthalate using catalytic ozonation in water
文献类型：期刊论文
| 作者 | Yu, Yan; An, Hongze; Zhao, Ying; Feng, Jing; Wei, Tong; Yu, Shuquan; Ren, Yueming; Chen, Yu
|
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2021-03-15 |
| 卷号 | 259页码:- |
| 关键词 | Graphene (GO and rGO) MnFe2O4 Catalytic ozonation Di-n-butyl phthalate (DBP) Advanced oxidation processes (AOPs) |
| ISSN号 | 1383-5866 |
| 英文摘要 | Magnetic, stable graphene-MnFe2O4 hybrids were synthesized by co-precipitation method for efficient degradation of di-n-butyl phthalate (DBP) using catalytic ozonation in water. The various synthesized catalysts were systematically characterized, and the catalytic activities in catalytic ozonation system were investigated. Moreover, a detailed mechanism of catalytic ozonation by synergistic function of graphene oxide (GO) and magnetic MnFe2O4 was proposed. Results showed that catalytic ozonation by 5-rGO-MFO-200 (MnFe2O4 calcined at 200 degrees C after 5 wt% GO doped) could significant boost the DBP degradation, which illustrated by the apparent rate constant (k = 0.0058 min(-1)) being nearly 4.2 times than that in ozone alone (k = 0.0241 min(-1)). The increased activities of 5-rGO-MFO-200 for the catalytic ozonation was attributed to its rich concentration of surface hydroxyl sites (SHSC), better charge electron transfer ability, favorable lattice structure and nanoparticles diffusion in contrast to bare MnFe2O4. All catalysts presented good recycling and stability in the repeated batch experiment, and the removal efficiency of DBP only decreased 3% after 5 times. The radical quenching tests verified that hydroxyl radicals ((OH)-O-center dot) was the dominant reactive oxygen species responsible for DBP degradation. Electrons cycling between Mn-2(+) and Mn3+ led to the decomposition of ozone to produce radical (OH)-O-center dot, which attacked DBP molecules to degrade into small molecular species and then further mineralized into CO2 and H2O. The synergistic function between magnetic MnFe2O4 and GO induced efficient ozone decomposition and more (OH)-O-center dot production. |
| WOS研究方向 | Engineering, Chemical |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46237]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 作者单位 | 1.Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China 2.Chinese Acad Sci, Key Lab Drinking Water Sci & Technol, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Yan,An, Hongze,Zhao, Ying,et al. MnFe2O4 decorated graphene as a heterogeneous catalyst for efficient degradation of di-n-butyl phthalate using catalytic ozonation in water[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2021,259:-. |
| APA | Yu, Yan.,An, Hongze.,Zhao, Ying.,Feng, Jing.,Wei, Tong.,...&Chen, Yu.(2021).MnFe2O4 decorated graphene as a heterogeneous catalyst for efficient degradation of di-n-butyl phthalate using catalytic ozonation in water.SEPARATION AND PURIFICATION TECHNOLOGY,259,-. |
| MLA | Yu, Yan,et al."MnFe2O4 decorated graphene as a heterogeneous catalyst for efficient degradation of di-n-butyl phthalate using catalytic ozonation in water".SEPARATION AND PURIFICATION TECHNOLOGY 259(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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