Nafion-Endowed Graphene Super-Anticorrosion Performance

doi:10.1021/acssuschemeng.0c05679

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Nafion-Endowed Graphene Super-Anticorrosion Performance
	Ding, Jiheng ; Liu, Panlin ; Zhou, Min ; Yu, Haibin
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2020
卷号	8 期号:40 页码:15344-15353
关键词	WALLED CARBON NANOTUBES CORROSION PROTECTION SULFONATED GRAPHENE EPOXY COATINGS SURFACE OXIDE SUPERHYDROPHOBICITY DISPERSION NANOSHEETS
DOI	10.1021/acssuschemeng.0c05679
英文摘要	Application of graphene (Gr)-reinforced green waterborne epoxy (WEP) coatings faces two major challenges: one is the usage of hydrophilic dispersants that can weaken the interactions between emulsifiers/WEP, resulting in demulsification of the WEP matrix, and the other is the "corrosion promotion activity (CPA)" originated from the high electric conductivity of Gr itself, which restricts the long-term anticorrosion capability. Herein, effective electrostatic-driven exfoliation of graphite into few-layer functionalized Gr nanosheets (nGNSs) was achieved, in which the strong interaction between Nafion (NA) and graphite caused a high yield of 65% under liquid sonication. Due to the surface-protective function of NA, the as-exfoliated nGNSs exhibited good electrical insulation and self-assemble parallelly in the WEP matrix. Electrochemical results confirmed that the nGNSs/WEP coatings displayed extraordinary and durable corrosion protection for carbon steel substrates. With the addition of only 0.3 wt % nGNSs, the corrosion rate of the WEP coatings reduced by 450 times after 120 days of immersion in 3.5 wt % NaCl(aq). Furthermore, scratch experiments clearly verified that the reduced graphene oxide (rGO) had a typical CPA effect but the nGNSs did not. All of these results suggested that the nGNSs provide an appealing approach toward the preparation and application of graphene-based coatings, with great implications for high-performance anticorrosion of WEP coatings.
学科主题	Chemistry ; Science & Technology - Other Topics ; Engineering
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20421]
专题	2020专题
作者单位	1.Yu, HB (corresponding author), Univ Chinese Acad Sci, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo Inst Mat Technol & Engn,Chinese Acad Sci, Ningbo 315201, Peoples R China. 2.Ding, JH 3.Yu, HB (corresponding author), Univ Chinese Acad Sci, Beijing 100039, Peoples R China.
推荐引用方式 GB/T 7714	Ding, Jiheng,Liu, Panlin,Zhou, Min,et al. Nafion-Endowed Graphene Super-Anticorrosion Performance[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2020,8(40):15344-15353.
APA	Ding, Jiheng,Liu, Panlin,Zhou, Min,&Yu, Haibin.(2020).Nafion-Endowed Graphene Super-Anticorrosion Performance.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,8(40),15344-15353.
MLA	Ding, Jiheng,et al."Nafion-Endowed Graphene Super-Anticorrosion Performance".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 8.40(2020):15344-15353.