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	Electrochemical and XPS investigation of phthalocyanine oligomer sulfonate as a corrosion inhibitor for iron in hydrochloric acid
	Peng Zhao ; Lihong Niu ; Lei Huang ; Fushi Zhang
	2010-10-12 ; 2010-10-12
关键词	Experimental/ adsorption charge exchange corrosion inhibitors electric impedance iron organic compounds X-ray photoelectron spectra/ XPS phthalocyanine oligomer sulphonate corrosion inhibitor iron hydrochloric acid potentiodynamic measurement corrosion current density AC impedance compressed capacitive semicircle charge transfer resistance electronic donor-acceptor chemical adsorption erosion electrochemical investigation temperature 313 K Fe/ A8160B Surface treatment and degradation of metals and alloys A8280P Electron spectroscopy for chemical analysis (photoelectron, Auger spectroscopy, etc.) A7960C Photoelectron spectra of clean metals A8245 Electrochemistry and electrophoresis A6845D Adsorption and desorption kinetics evaporation and condensation/ temperature 3.13E+02 K/ Fe/sur Fe/el
中文摘要	A water soluble and metal free phthalocyanine oligomer sulfonate (H/sub 2/PPc ldr (SO/sub 3/Na)/sub x/) has been synthesized and its corrosion inhibitive effect has been investigated by potentiodynamic measurement, ac impedance, and surface analysis. The potentiodynamic parameters show that H/sub 2/PPc ldr (SO/sub 3/Na)/sub x/ can effectively reduce the corrosion current density and inhibit the corrosion of iron in 1 mol L/sup -1/ HCl at 313 K. The H/sub 2/PPc ldr (SO/sub 3/Na)/sub x/ functions as a mixed type inhibitor with anodic suppression outweighing the cathodic one. The ac impedance result, which is shown in the form of a compressed capacitive semicircle on complex plots, demonstrates that charge transfer resistance R/sub ct/ increases with the increase in concentration of H/sub 2/PPc ldr (SO/sub 3/Na)/sub x/ in acidic solution. The X-ray photoelectron spectroscopy (XPS) result indicates the presence of the electronic donor-acceptor between Fe atoms and front molecular orbital of H/sub 2/PPc ldr (SO/sub 3/Na)/sub x/, evidence that the forms an adsorption layer on iron surface via chemical adsorption to protect iron from erosion in acid.
语种	英语
出版者	Electrochemical Society Inc. ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80895]
专题	清华大学
推荐引用方式 GB/T 7714	Peng Zhao,Lihong Niu,Lei Huang,et al. Electrochemical and XPS investigation of phthalocyanine oligomer sulfonate as a corrosion inhibitor for iron in hydrochloric acid[J],2010, 2010.
APA	Peng Zhao,Lihong Niu,Lei Huang,&Fushi Zhang.(2010).Electrochemical and XPS investigation of phthalocyanine oligomer sulfonate as a corrosion inhibitor for iron in hydrochloric acid..
MLA	Peng Zhao,et al."Electrochemical and XPS investigation of phthalocyanine oligomer sulfonate as a corrosion inhibitor for iron in hydrochloric acid".(2010).

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