期刊
ELECTROCHIMICA ACTA
卷 296, 期 -, 页码 874-881出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.11.115
关键词
Amorphous Ru; Polypyrrole/foam Ni; Electrocatalytic hydrodechlorination; Pentachlorophenol
资金
- National Natural Science Foundation of China [51678323]
- NaturalScience Foundation of Shandong Province China [ZR2017MEE013]
- Edanz Group China
Ru/polypyrrole/foam Ni composite electrodes were electrochemically deposited for application to electrocatalytic hydrodechlorination of pentachlorophenol (PCP) in aqueous solution. We characterized the Ru/polypyrrole/foam Ni composite electrode by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and cyclic voltammetry. The polypyrroles were uniformly distributed on the nickel foam and Ru particles in the size range of 5-8 nm formed an amorphous layer on the polypyrrole/foam Ni composite surface. Compared with the crystalline electrodes of the Ru/foam Ni electrode, the Ru/polypyrrole/foam Ni composite electrodes showed better electrocatalytic dechlorination efficiency and greater stability. At a Ru loading of 0.06 mg/cm(2), cathode potential of -1.2 V, and H2SO4 concentration of 0.2 mol/L, the degradation efficiency of PCP reached 94.3% with a dechlorination efficiency of 88%. This performance was well maintained after 8 cycles of reuse. (C) 2018 Elsevier Ltd. All rights reserved.
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