PMID- 31780151
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20200122
LR  - 20200122
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 707
DP  - 2020 Mar 10
TI  - Activation of persulfate by stability-enhanced magnetic graphene oxide for the 
      removal of 2,4-dichlorophenol.
PG  - 135656
LID - S0048-9697(19)35651-7 [pii]
LID - 10.1016/j.scitotenv.2019.135656 [doi]
AB  - A stability-enhanced magnetic catalyst, composed of alpha-Fe(2)O(3)@Fe(3)O(4) 
      shell-core magnetic nanoparticles and graphene oxide (MGO), was prepared and 
      characterized by scanning electron micrope (SEM), X-ray diffraction (XRD), 
      vibrating sample magnetometer (VSM), and Brunauer-Emmett-Teller (BET). Catalyst 
      synthesis was used to efficiently activate persulfate for the removal of 
      2,4-dichlorophenol (2,4-DCP). A magnetic nanoparticle:GO mass ratio of 5 (MGO-5) 
      exhibited a better catalytic efficiency and could be effectively reused four 
      times. The influences of the pollutant, catalyst, and oxidant concentrations were 
      investigated, and the intrinsic relationships among these factors and the 
      degradation kinetic constant were evaluated by a fitting method. It was found 
      that the catalytic degradation process in the MGO-5-persulfate-2,4-DCP system was 
      most likely dominated by an interfacial catalytic reaction, with an activation 
      energy of 13.88 kJ/mol. Radical quenching experiments and electron paramagnetic 
      resonance (EPR) analysis indicated that both sulfate radicals (SO(4)(-)) and 
      hydroxyl radicals (OH) were responsible for 2,4-DCP removal, but surface-bounded 
      SO(4)(-) played a greater role. Chloride ions at a concentration of 0-60 mg/L had 
      no effect on 2,4-DCP removal. The proposed advanced oxidation technology has 
      potential applications for the practical removal of aqueous organic pollutants.
CI  - Copyright (c) 2019 Elsevier B.V. All rights reserved.
FAU - Pang, Ya
AU  - Pang Y
AD  - College of Biology and Environmental Engineering, Changsha University, Changsha 
      410002, China.
FAU - Zhou, Yaoyu
AU  - Zhou Y
AD  - College of Resources and Environment, Hunan Agricultural University, Changsha 
      410128, China. Electronic address: zhouyy@hunau.edu.cn.
FAU - Luo, Kun
AU  - Luo K
AD  - College of Biology and Environmental Engineering, Changsha University, Changsha 
      410002, China. Electronic address: luokun@ccsu.edu.cn.
FAU - Zhang, Zhu
AU  - Zhang Z
AD  - College of Biology and Environmental Engineering, Changsha University, Changsha 
      410002, China.
FAU - Yue, Ran
AU  - Yue R
AD  - College of Biology and Environmental Engineering, Changsha University, Changsha 
      410002, China.
FAU - Li, Xue
AU  - Li X
AD  - College of Biology and Environmental Engineering, Changsha University, Changsha 
      410002, China.
FAU - Lei, Min
AU  - Lei M
AD  - College of Biology and Environmental Engineering, Changsha University, Changsha 
      410002, China.
LA  - eng
PT  - Journal Article
DEP - 20191120
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
OTO - NOTNLM
OT  - Advanced oxidation technology
OT  - Graphene oxide
OT  - Magnetic nanoparticles
OT  - Sulfate radical
OT  - Wastewater treatment
EDAT- 2019/11/30 06:00
MHDA- 2019/11/30 06:01
CRDT- 2019/11/30 06:00
PHST- 2019/09/07 00:00 [received]
PHST- 2019/11/04 00:00 [revised]
PHST- 2019/11/19 00:00 [accepted]
PHST- 2019/11/30 06:00 [pubmed]
PHST- 2019/11/30 06:01 [medline]
PHST- 2019/11/30 06:00 [entrez]
AID - S0048-9697(19)35651-7 [pii]
AID - 10.1016/j.scitotenv.2019.135656 [doi]
PST - ppublish
SO  - Sci Total Environ. 2020 Mar 10;707:135656. doi: 10.1016/j.scitotenv.2019.135656. 
      Epub 2019 Nov 20.