PMID- 30712207 OWN - NLM STAT- MEDLINE DCOM- 20190530 LR - 20200225 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 26 IP - 9 DP - 2019 Mar TI - Synergistic effect and degradation mechanism on Fe-Ni/CNTs for removal of 2,4-dichlorophenol in aqueous solution. PG - 8768-8778 LID - 10.1007/s11356-019-04394-w [doi] AB - Fe-Ni bimetallic nanoparticles supported on CNTs (Fe-Ni/CNTs) were synthesized, characterized, and applied for removal of 2,4-dichlorophenol (2,4-DCP) in aqueous solution. The removal performance was enhanced drastically on Fe-Ni/CNTs with respect to monometallic Fe/CNTs. The synergistic effect between Fe-Ni nanoparticles and CNTs has been studied in detail. The research results indicated that the doping of Ni played an important role in promoting the catalytic degradation of 2,4-DCP. And the presence of CNTs not only could effectively reduce the aggregation of nanoparticles but also facilitate the mass transfer of 2,4-DCP and the formation of active atomic hydrogen during the catalytic process. In addition, the removal kinetics of 2,4-DCP by Fe-Ni/CNTs were in agreement with a pseudo-first-order model, and the rate constants were dependent on a number of factors including the initial concentration of 2,4-DCP, the dosage of Fe-Ni/CNTs, pH value of the solution, and doping amount of Ni. The degradation mechanism involved the adsorption by CNTs and catalytic reduction by Fe under the stimulating of Ni, and the preferred dechlorination followed the order of para-Cl > ortho-Cl. The study confirmed that Fe-Ni/CNTs had a potential to be a promising catalytic material for removal of chlorophenol and had a great prospect for practical application. FAU - Sun, Yufeng AU - Sun Y AD - Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, People's Republic of China. AD - School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng, 224002, People's Republic of China. FAU - Liu, Zongtang AU - Liu Z AD - School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng, 224002, People's Republic of China. FAU - Fei, Zhenghao AU - Fei Z AD - School of Chemistry and Environmental Engineering, Yancheng Teachers University, Yancheng, 224002, People's Republic of China. FAU - Li, Changshun AU - Li C AD - Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, People's Republic of China. FAU - Chun, Yuan AU - Chun Y AD - Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, People's Republic of China. FAU - Zhang, Aimin AU - Zhang A AD - Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, People's Republic of China. zhangamchem@163.com. LA - eng GR - 41877118/the National Natural Science Foundation of China/ GR - 21573104/the National Natural Science Foundation of China/ GR - BK20181479/the Natural Science Foundation of Jiangsu Province of China/ GR - 17KJB610013/the Natural Science Foundation of the Jiangsu Higher Education Institutions of China/ GR - 17KJA610006/the Natural Science Foundation of the Jiangsu Higher Education Institutions of China/ PT - Journal Article DEP - 20190202 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Chlorophenols) RN - 0 (Nanotubes, Carbon) RN - 0 (Water Pollutants, Chemical) RN - 7OV03QG267 (Nickel) RN - E1UOL152H7 (Iron) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - Catalysis MH - Chlorophenols/*chemistry MH - Iron/*chemistry MH - Kinetics MH - *Nanotubes, Carbon MH - Nickel/*chemistry MH - Water Pollutants, Chemical/*chemistry MH - Water Purification/*methods OTO - NOTNLM OT - 2,4-dichlorophenol OT - CNTs OT - Degradation OT - Supported Fe-Ni nanoparticles OT - Synergistic effect EDAT- 2019/02/04 06:00 MHDA- 2019/05/31 06:00 CRDT- 2019/02/04 06:00 PHST- 2018/10/19 00:00 [received] PHST- 2019/01/25 00:00 [accepted] PHST- 2019/02/04 06:00 [pubmed] PHST- 2019/05/31 06:00 [medline] PHST- 2019/02/04 06:00 [entrez] AID - 10.1007/s11356-019-04394-w [pii] AID - 10.1007/s11356-019-04394-w [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2019 Mar;26(9):8768-8778. doi: 10.1007/s11356-019-04394-w. Epub 2019 Feb 2.