Corrosion Protection of Carbon Steel in Circulating Cooling Water by Open‐chain Carboxyethyltin and Transition Metal Co‐functionalized Tungstogermanates | Zendy

Sang Xiaojing | Zendy; Wang Zhixin | Zendy; Li Jiansheng | Zendy; Wang Haidan | Zendy; Su Fang | Zendy; Liu Zhaobin | Zendy; Zhang Lancui | Zendy; Zhu Zaiming | Zendy

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Corrosion Protection of Carbon Steel in Circulating Cooling Water by Open‐chain Carboxyethyltin and Transition Metal Co‐functionalized Tungstogermanates

Author(s) -

Sang Xiaojing,

Wang Zhixin,

Li Jiansheng,

Wang Haidan,

Su Fang,

Liu Zhaobin,

Zhang Lancui,

Zhu Zaiming

Publication year - 2018

Publication title -

chemistryselect

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 34

ISSN - 2365-6549

DOI - 10.1002/slct.201800789

Subject(s) - x ray photoelectron spectroscopy , dielectric spectroscopy , corrosion , materials science , nuclear chemistry , gravimetric analysis , metal , carbon steel , scanning electron microscope , transition metal , carbon fibers , electrochemistry , chemistry , composite number , catalysis , metallurgy , chemical engineering , organic chemistry , composite material , electrode , engineering

Open‐chain carboxyethyltin and transition metal (TM) co‐decorated double armed type polyoxometalates (POMs) [C(NH 2 ) 3 ] 10 H 2 [(TM) 2 (SnCH 2 CH 2 COO) 2 (B‐α‐GeW 9 O 34 ) 2 ]•nH 2 O (abbreviated as GeW 9 ‐TM‐SnR‐COO , TM=Mn, Cu, Zn) were firstly applied as corrosion inhibitors for carbon steel in circulating cooling water, and the corrosion inhibition abilities of them and their parent POMs Na 12 [(TM) 4 (H 2 O) 2 (GeW 9 O 34 ) 2 ]•nH 2 O (abbreviated as GeW 9 ‐TM , TM=Mn, Cu, Zn) were evaluated by gravimetric method and electrochemical impedance spectroscopy. The morphology, composition and element oxidation state of metallic surface film were characterized by scanning electron microscopy/energy dispersive X‐ray spectroscopy (SEM/EDX) and X‐ray photoelectron spectroscopy (XPS) technologies. Compared with GeW 9 ‐TM , GeW 9 ‐TM‐SnR‐COO organic‐inorganic hybrids improved corrosion resistance of carbon steel. Additionally, GeW 9 ‐TM‐SnR‐COO showed good synergistic effect with polyhydric alcohol phosphate ester (PAPE) and sulfonate copolymer (AMPS), and the maximum inhibition efficiency is up to 97% for GeW 9 ‐Zn‐SnR‐COO +PAPE+AMPS composite.

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