High Anticorrosion Properties due to Electron Spin Polarization of Hydroxyapatite with Point Defects

Hydroxyapatite (HAP) with point defects was designed under simple liquid-phase conditions. The presence of V O, O– radical vacancies, and −OH radicals achieved the capture of oxygen. The spin state jump of Cu is stimulated to produce more unpaired electrons. Spin-polarized electrons undergo rapid ex...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2022-03, Vol.61 (12), p.4179-4190
Main Authors: Yang, Xiu, Guo, Xiao-Jiao, Zhou, Dan, Liu, Jin-Ku
Format: Article
Language:English
Subjects:
Applied Chemistry
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Summary:Hydroxyapatite (HAP) with point defects was designed under simple liquid-phase conditions. The presence of V O, O– radical vacancies, and −OH radicals achieved the capture of oxygen. The spin state jump of Cu is stimulated to produce more unpaired electrons. Spin-polarized electrons undergo rapid exchange with oxygens, promoting the protonation of oxygen molecules. In addition, the formation of stable chlorapatite in the OH-channel of HAP imparts excellent shielding properties to the material. The unique thin lamellar and more active electrode storage charge surface give it some electron storage capacity, providing good electrochemical cathodic protection for iron substrates. As a result, the impedance value of Cu-HAP as an anticorrosion material was improved by 501.6% compared with that of epoxy resin. The anticorrosion study of transition-metal-based inhibitors based on the 3d orbital electronic structure depends on spin-dependent electron transfer. This work provides some insight into the development of the corrosion protection field.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.1c05023