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Utilization of electrochemical treatment and surface reconstruction to achieve long lasting catalyst for NOx removal
Sharif, Hafiz Muhammad Adeel; Mahmood, Asif; Djellabi, Ridha; Cheng, Hao-Yi; Dong, Heng; Ajibade, Fidelis Odedishemi; Ali, Imran; Yang, Bo; Wang, Ai-Jie
2021-01-05
Source PublicationJOURNAL OF HAZARDOUS MATERIALS
ISSN0304-3894
Volume401Pages:-
AbstractThe development of catalysts has seen tremendous growth recently but most strategies only report utilization of catalysts for a few initial cycles without taking into account the influence of oxygen poisoning. Here, the magnetic Fe3O4@EDTA-Fe (MEFe, having a core Fe3O4 particle with EDTA-Fe coating) was investigated as a model catalyst for long-term recycling for the removal of nitrogen oxide (NOx) from NO/O-2 mixture, followed by N2O recovery. The concentration of oxygen in the flue gas was found to have a strong impact on NO,, absorption and catalytic response. To circumvent the oxygen poisoning, the MEFe was subjected to electrochemical treatment in the presence of neutral red (N.R.) and NO removal efficiency was 95 % noted. Furthermore, the surface of the catalyst degraded significantly (p < 0.05) after 6-7 repetitive cycling due to surface catalytic reactions, surface poisoning, oxidation of metallic species as well as residual stresses. The MEFe surface was reconstructed after 7 cycles using EDTA solution and Fe source to achieve similar surface coating as the fresh MEFe catalyst. The reconstructed MEFe exhibited similar NOx absorption capability as the fresh MEFe and the reconstruction loop was repeated several times to achieve long term cycling, which make the catalyst cost-effective. Hence, it is proposed that a successful regeneration process can be employed for promising, sustainable and long-lasting catalytic treatment of air pollutants.
Department中国科学院环境生物技术重点实验室
KeywordFlue gas Long-term recycling Electrochemical treatment Degradation Reconstruction of Fe3O4@EDTA@Fe
WOS Research AreaEngineering, Environmental ; Environmental Sciences
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46166
Collection中国科学院环境生物技术重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
2.Shenzhen Univ, Dept Environm Engn, Coll Chem & Environm Engn, Shenzhen 518055, Peoples R China
3.Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW, Australia
4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
5.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China
Recommended Citation
GB/T 7714
Sharif, Hafiz Muhammad Adeel,Mahmood, Asif,Djellabi, Ridha,et al. Utilization of electrochemical treatment and surface reconstruction to achieve long lasting catalyst for NOx removal[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,401:-.
APA Sharif, Hafiz Muhammad Adeel.,Mahmood, Asif.,Djellabi, Ridha.,Cheng, Hao-Yi.,Dong, Heng.,...&Wang, Ai-Jie.(2021).Utilization of electrochemical treatment and surface reconstruction to achieve long lasting catalyst for NOx removal.JOURNAL OF HAZARDOUS MATERIALS,401,-.
MLA Sharif, Hafiz Muhammad Adeel,et al."Utilization of electrochemical treatment and surface reconstruction to achieve long lasting catalyst for NOx removal".JOURNAL OF HAZARDOUS MATERIALS 401(2021):-.
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