Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 37, Issue 23, Pages 17862-17869Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.09.109
Keywords
Chlorophenols; Electrocatalytic hydrogenolysis; Hydrogen evolution reaction; Hydrodechlorination; Palladium-nickel bimetallic electrode; Sodium dodecyl benzene sulfonate
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Funding
- Beijing Natural Science Foundation [8112006]
- National Natural Science Foundation of China [51078009]
- Research Fund for the Doctoral Program of Higher Education of China [20111103110007]
- Cultivation Fund for Beijing New Century Hundred, Thousand and Ten Thousand Talents Project
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Hydrodehalogenation (HDH) of 2,4-dichlorophenol (2,4-DCP) on a palladium-nickel (Pd-Ni) bimetallic electrode was investigated in this paper. The Pd-Ni bimetallic electrode was prepared on meshed titanium (Ti) substrate by electrochemical deposition with assistance of sodium dodecyl benzene sulfonate (SDBS). Cyclic voltammetry (CV) results revealed that the hydrogen adsorption peak current value of electrode became larger when SDBS was added in electrode preparation process. The structure and composition of the electrode were characterized by scanning electron microscopy (SEM), inductively coupled plasma-atomic emission spectrometry (ICP-AES) and X-ray diffraction (XRD). Dechlorination experiment was conducted on the Pd-Ni(SDBS)/Ti electrode in the presence of 100 mg L-1 (0.61 mmol L-1) 2,4-DCP. The removal efficiency of 2,4-DCP reached 100% with dechlorination current of 5 mA within 70 min in aqueous solution, meanwhile the current efficiency was 33.9%. The Pd-Ni(SDBS)/Ti electrode exhibits a good application prospect for electrocatalytic degradation of 2,4-DCP. Copyright (c) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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