PMID- 24679843
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20150331
LR  - 20140526
IS  - 1873-2828 (Electronic)
IS  - 1350-4177 (Linking)
VI  - 21
IP  - 5
DP  - 2014 Sep
TI  - Catalytic dechlorination of 2,4-dichlorophenol by Ni/Fe nanoparticles prepared in 
      the presence of ultrasonic irradiation.
PG  - 1714-21
LID - S1350-4177(14)00080-7 [pii]
LID - 10.1016/j.ultsonch.2014.03.002 [doi]
AB  - In this study, nickle/iron (Ni/Fe) nanoparticles were synthesized by liquid phase 
      reductive method in the presence of 20 kHz ultrasonic irradiation to improve 
      nanoparticles' disparity and avoid agglomeration. The characterized results 
      showed that this method has obviously modified most of the particles in term of 
      sizes and specific surface areas. Meanwhile, the improved nanoscale Ni/Fe 
      particles were employed for the reductive dechlorination of 2,4-dichlorophenol 
      (2,4-DCP) as a function of some influential factors (Ni content, Ni/Fe 
      nanoparticles dosage, reaction temperature and initial pH values) and degradation 
      path. Experimental results showed that 2,4-DCP was first adsorbed by Ni/Fe 
      nanoparticles, then quickly reduced to o-chlorophenol (o-CP), p-chlorophenol 
      (p-CP), and finally to phenol (P). The application of ultrasonic irradiation for 
      Ni/Fe nanoparticles synthesis was found to significantly enhance the removal 
      efficiency of 2,4-DCP. Consequently, the phenol production rates increased from 
      68% (in the absence of ultrasonic irradiation) to 87% (in the presence of 
      ultrasonic irradiation) within 180 min. Nearly 96% of 2,4-DCP was removed after 
      300 min reaction with these optimized conditions: Ni content over Fe(0) 3 wt%, 
      initial 2,4-DCP concentration 20 mg L(-1), Ni/Fe dosage 3 g L(-1), initial pH 
      value 3.0, and reaction temperature 25  degrees C. The degradation of 2,4-DCP followed 
      pseudo-first-order kinetics reaction and the apparent pseudo-first-order kinetics 
      constant was 0.0737 min(-1). This study suggested that the presence of ultrasonic 
      irradiation in the synthesis of nanoscale Ni/Fe particles could be a promising 
      technique to enhance nanoparticle's disparity and avoid agglomeration.
CI  - Copyright (c) 2014 Elsevier B.V. All rights reserved.
FAU - Zhao, Deming
AU  - Zhao D
AD  - College of Chemical Engineering and Materials Science, Zhejiang University of 
      Technology, Hangzhou 310032, People's Republic of China.
FAU - Zheng, Yiya
AU  - Zheng Y
AD  - College of Chemical Engineering and Materials Science, Zhejiang University of 
      Technology, Hangzhou 310032, People's Republic of China.
FAU - Li, Min
AU  - Li M
AD  - College of Chemical Engineering and Materials Science, Zhejiang University of 
      Technology, Hangzhou 310032, People's Republic of China; Ningbo Research and 
      Design Institute of Chemical Industry, Ningbo 315040, People's Republic of China.
FAU - Baig, Shams Ali
AU  - Baig SA
AD  - College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 
      310058, People's Republic of China.
FAU - Wu, Donglei
AU  - Wu D
AD  - College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 
      310058, People's Republic of China.
FAU - Xu, Xinhua
AU  - Xu X
AD  - College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 
      310058, People's Republic of China. Electronic address: wudl@zju.edu.cn.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20140313
PL  - Netherlands
TA  - Ultrason Sonochem
JT  - Ultrasonics sonochemistry
JID - 9433356
OTO - NOTNLM
OT  - 2,4-dichlorophenol (2,4-DCP)
OT  - Catalytic dechlorination
OT  - Kinetics
OT  - Ni/Fe nanoparticles
OT  - Ultrasound
EDAT- 2014/04/01 06:00
MHDA- 2014/04/01 06:01
CRDT- 2014/04/01 06:00
PHST- 2013/12/17 00:00 [received]
PHST- 2014/03/05 00:00 [revised]
PHST- 2014/03/05 00:00 [accepted]
PHST- 2014/04/01 06:00 [entrez]
PHST- 2014/04/01 06:00 [pubmed]
PHST- 2014/04/01 06:01 [medline]
AID - S1350-4177(14)00080-7 [pii]
AID - 10.1016/j.ultsonch.2014.03.002 [doi]
PST - ppublish
SO  - Ultrason Sonochem. 2014 Sep;21(5):1714-21. doi: 10.1016/j.ultsonch.2014.03.002. 
      Epub 2014 Mar 13.