PMID- 25454429 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20150521 LR - 20180506 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 438 DP - 2015 Jan 15 TI - Fenton-like oxidation of 2,4-DCP in aqueous solution using iron-based nanoparticles as the heterogeneous catalyst. PG - 87-93 LID - S0021-9797(14)00741-3 [pii] LID - 10.1016/j.jcis.2014.09.082 [doi] AB - In this report, various iron-based nanoparticles (nZVI, n-Ni/Fe, n-Pd/Fe) were used for both heterogeneous Fenton oxidation of 2,4-dichlorophenol (2,4-DCP) and reductive dechlorination of 2,4-DCP in order to understand their roles in the Fenton oxidation and the reductive degradation of 2,4-DCP. The dechlorination efficiency of 2,4-DCP using nZVI, n-Ni/Fe, n-Fe/Pd and Fe(2)(+) was 6.48%, 6.80%, 15.95%, 5.02%, while Fenton oxidation efficiency of 2,4-DCP was 57.87%, 34.23%, 27.94%, 19.61% after 180 min, respectively. The new findings included a higher dechlorination using n-Fe/Pd due to Pd effective catalysis and the effective heterogeneous Fenton oxidation using nZVI depending on reductive dechlorination and heterogeneous Fenton oxidation occurs simultaneously. However, nZVI as the potential catalyst for heterogeneous Fenton was observed, and SEM, EDS and XRD demonstrate that change on the nZVI surface occurred due to the Fe(2+) leaching, and Total Organic Carbon (TOC) (30.71%) shows that 2,4-DCP was degraded. Furthermore, the experiment indicates that the pH values and concentration of 2,4-DCP significantly impacted on the heterogeneous Fenton oxidation of 2,4-DCP and the data fits well with the pseudo first-order kinetic model, which was a diffusion-controlled reaction. Finally, a possible mechanism for degradation of 2,4-DCP was proposed. CI - Copyright (c) 2014 Elsevier Inc. All rights reserved. FAU - Li, Renchao AU - Li R AD - School of Environment Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China. FAU - Gao, Ying AU - Gao Y AD - School of Environment Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China. FAU - Jin, Xiaoying AU - Jin X AD - School of Environment Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China. FAU - Chen, Zuliang AU - Chen Z AD - School of Environment Science and Engineering, Fujian Normal University, Fuzhou 350007, Fujian Province, China; Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, Mawson Lakes, SA 5095, Australia. Electronic address: Zuliang.chen@unisa.edu.au. FAU - Megharaj, Mallavarapu AU - Megharaj M AD - Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, Mawson Lakes, SA 5095, Australia. FAU - Naidu, Ravendra AU - Naidu R AD - Centre for Environmental Risk Assessment and Remediation, University of South Australia, Mawson Lakes, SA 5095, Australia; Cooperative Research Centre for Contamination Assessment and Remediation of Environments, Mawson Lakes, SA 5095, Australia. LA - eng PT - Journal Article DEP - 20141013 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 OTO - NOTNLM OT - 2,4-DCP OT - Heterogeneous Fenton oxidation OT - Nanocatalyst OT - nZVI EDAT- 2014/12/03 06:00 MHDA- 2014/12/03 06:01 CRDT- 2014/12/03 06:00 PHST- 2014/06/11 00:00 [received] PHST- 2014/09/27 00:00 [revised] PHST- 2014/09/30 00:00 [accepted] PHST- 2014/12/03 06:00 [entrez] PHST- 2014/12/03 06:00 [pubmed] PHST- 2014/12/03 06:01 [medline] AID - S0021-9797(14)00741-3 [pii] AID - 10.1016/j.jcis.2014.09.082 [doi] PST - ppublish SO - J Colloid Interface Sci. 2015 Jan 15;438:87-93. doi: 10.1016/j.jcis.2014.09.082. Epub 2014 Oct 13.