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辛胺共价功能化氧化石墨烯的实验与计算研究：AZ13镁合金在3.5%氯化钠溶液中的电化学稳定性、析氢及缓蚀性能

Experimental and computational studies of graphene oxide covalently functionalized by octylamine: electrochemical stability, hydrogen evolution, and corrosion inhibition of the AZ13 Mg alloy in 3.5% NaCl.

作者信息

Palaniappan N, Cole I S, Kuznetsov A E

机构信息

School of Chemical Sciences, Central University of Gujarat India

Advanced Manufacturing and Fabrication Research and Innovation, RMIT University Melbourne Victoria 3100 Australia

出版信息

RSC Adv. 2020 Mar 20;10(19):11426-11434. doi: 10.1039/c9ra10702a. eCollection 2020 Mar 16.

DOI:10.1039/c9ra10702a
PMID:35495345
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9050467/
Abstract

Recently, carbon allotropes were shown to play a key role in energy harvesting and as hydrophobic coatings on metal alloys. We have designed octylamine-functionalized graphene oxide materials for energy harvesting and as an anti-corrosion coating for metal alloy protection in a 3.5% NaCl medium. The material has been characterized by different techniques to confirm the structure and composition of the modified graphene oxide sheet: FTIR spectroscopy, XRD, Raman spectroscopy, FESEM and TEM. The electrochemical stability and corrosion inhibition efficiency were studied by electrochemical methods. The electrochemical stability increased with an increase in the applied voltage up to 500 mV, and the corrosion inhibition efficiency was shown to be 73%. The coating stability studies showed a long stability time in the corrosion medium.

摘要

最近，碳的同素异形体在能量收集以及作为金属合金上的疏水涂层方面发挥着关键作用。我们设计了用于能量收集的辛胺功能化氧化石墨烯材料，并将其作为在3.5%氯化钠介质中保护金属合金的防腐涂层。通过不同技术对该材料进行了表征，以确认改性氧化石墨烯片的结构和组成：傅里叶变换红外光谱（FTIR）、X射线衍射（XRD）、拉曼光谱、场发射扫描电子显微镜（FESEM）和透射电子显微镜（TEM）。采用电化学方法研究了其电化学稳定性和缓蚀效率。随着施加电压增加至500 mV，电化学稳定性增强，缓蚀效率达73%。涂层稳定性研究表明，该涂层在腐蚀介质中具有较长的稳定时间。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6766/9050467/c14b690a4259/c9ra10702a-f9.jpg
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