PMID- 31284904
OWN - NLM
STAT- MEDLINE
DCOM- 20190807
LR  - 20191210
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 84
DP  - 2019 Oct
TI  - Understanding the electrode reaction process of dechlorination of 
      2,4-dichlorophenol over Ni/Fe nanoparticles: Effect of pH and 2,4-dichlorophenol 
      concentration.
PG  - 13-20
LID - S1001-0742(18)31542-0 [pii]
LID - 10.1016/j.jes.2019.01.012 [doi]
AB  - Herein, with the exploitation of iron and nickel electrodes, the 
      2,4-dichlorophenol (2,4-DCP) dechlorinating processes at the anode and cathode, 
      respectively, were separately studied via various electrochemical techniques 
      (e.g., Tafel polarization, linear polarization, electrochemical impedance 
      spectroscopy). With this in mind, Ni/Fe nanoparticles were prepared by chemical 
      solution deposition, and utilized to test the dechlorination activities of 
      2,4-DCP over a bimetallic system. For the iron anode, the results showed that 
      higher 2,4-DCP concentration and solution acidity aggravated the corrosion within 
      the electrode. The charge transfer resistance (R(ct)) values of the iron 
      electrode were 703, 473, 444, and 437 Omega∙cm(2) for the initial 2,4-DCP 
      concentrations of 0, 20, 50, and 80 mg/L, respectively. When the bulk pH of the 
      2,4-DCP solution varied from 3.0, 5.0 to 7.0, the corresponding R(ct) values were 
      315, 376, and 444 Omega∙cm(2), respectively. For the nickel cathode, the reduction 
      current densities on the electrode at -0.75 V (vs. saturated calomel electrode) 
      were 80, 106, and 111 muA/cm(2), for initial 2,4-DCP concentrations of 40, 80, and 
      125 mg/L. The dechlorination experiments demonstrated that when the initial pH of 
      the solution was 7.0, 5.0, and 3.0, the dechlorination percentage of 2,4-DCP by 
      Ni/Fe nanoparticles was 62%, 69%, and 74%, respectively, which was in line with 
      the electrochemical experiments. 10 wt.% Ni loading into Ni/Fe bimetal was 
      affordable and gave a good dechlorination efficiency of 2,4-DCP, and fortunately 
      the Ni/Fe nanoparticles remained comparatively stable in the dechlorination 
      processes at pH 3.0.
CI  - Copyright (c) 2019. Published by Elsevier B.V.
FAU - Zheng, Kaiyuan
AU  - Zheng K
AD  - School of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, 
      China; Hubei International Scientific and Technological Cooperation Base of 
      Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
FAU - Song, Yuqiao
AU  - Song Y
AD  - School of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, 
      China; Hubei International Scientific and Technological Cooperation Base of 
      Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
FAU - Wang, Xu
AU  - Wang X
AD  - School of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, 
      China; Hubei International Scientific and Technological Cooperation Base of 
      Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China. 
      Electronic address: xu.wang@whu.edu.cn.
FAU - Li, Xin
AU  - Li X
AD  - School of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, 
      China; Hubei International Scientific and Technological Cooperation Base of 
      Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
FAU - Mao, Xuhui
AU  - Mao X
AD  - School of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, 
      China; Hubei International Scientific and Technological Cooperation Base of 
      Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China.
FAU - Wang, Dihua
AU  - Wang D
AD  - School of Resources and Environmental Sciences, Wuhan University, Wuhan 430079, 
      China; Hubei International Scientific and Technological Cooperation Base of 
      Sustainable Resource and Energy, Wuhan University, Wuhan 430079, China. 
      Electronic address: wangdh@whu.edu.cn.
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
DEP - 20190123
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 0 (Chlorophenols)
RN  - 0 (Water Pollutants, Chemical)
RN  - 4R7X1O2820 (Chlorine)
RN  - 7OV03QG267 (Nickel)
RN  - E1UOL152H7 (Iron)
RN  - R669TG1950 (2,4-dichlorophenol)
MH  - Chlorine/*isolation & purification
MH  - Chlorophenols/*chemistry
MH  - Electrodes
MH  - Hydrogen-Ion Concentration
MH  - Iron/chemistry
MH  - Nanoparticles/chemistry
MH  - Nickel/chemistry
MH  - Water Pollutants, Chemical/*chemistry
OTO - NOTNLM
OT  - 2,4-Dichlorophenol (2,4-DCP)
OT  - Catalytic hydrogenation
OT  - Corrosion
OT  - Dechlorination
OT  - Ni/Fe particles
EDAT- 2019/07/10 06:00
MHDA- 2019/08/08 06:00
CRDT- 2019/07/10 06:00
PHST- 2018/06/08 00:00 [received]
PHST- 2019/01/07 00:00 [revised]
PHST- 2019/01/14 00:00 [accepted]
PHST- 2019/07/10 06:00 [entrez]
PHST- 2019/07/10 06:00 [pubmed]
PHST- 2019/08/08 06:00 [medline]
AID - S1001-0742(18)31542-0 [pii]
AID - 10.1016/j.jes.2019.01.012 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2019 Oct;84:13-20. doi: 10.1016/j.jes.2019.01.012. Epub 
      2019 Jan 23.