Preparation of amino-functionalized graphene oxide by Hoffman rearrangement and its performances on polyacrylate coating latex

Zhang, Wenbo; Ma, Jianzhong; Gao, Dangge; Zhou, Yongxiang; Li, Congmin; Zha, Jiao; Zhang, Jing

doi:10.1016/j.porgcoat.2016.01.013

Cited by 80 publications

(52 citation statements)

References 43 publications

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“…A similar Raman spectrum of aminated graphene was reported by Zhang et al. 30 Nitrogen functional groups, due to their nature, favor the occurrence of double resonant processes compared to oxygen functional groups. The presence of these second order bands could suggest that nitrogen groups play a role in sp 2 system.…”

Section: Characterizationsupporting

confidence: 81%

“…Amination of graphene or reduced graphene oxide has received less consideration since specific equipment, hazardous chemicals or a large number of steps are required. 24,25,30,33,34 For instance, Bittolo Bon et al 33 reported the amination of thermally reduced graphene oxide (TRGO) via plasma activation. They first covalently attached fluorine to the TRGO sheets by plasma-assisted decomposition of CF4 gas and then exposed this material to butylamine at room temperature.…”

Section: Introductionmentioning

confidence: 99%

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Facile and Scalable One-Step Method for Amination of Graphene Using Leuckart Reaction

et al. 2017

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A very simple method of reductive amination, based on the Leuckart reaction, is reported. This method enables not only the reduction of graphite oxide, but also results in reduced graphene oxide functionalized with amine groups, where the amination degree is 3.2 at.% as determined by XPS. The dominant nitrogen functional group was primary amine, but pyridines and lactam groups were also observed. It was found that the aminofunctionalized reduced graphene oxide is a semimetallic material because of the lack of band gap, unlike the graphite oxide that presented a band gap of 2.16 eV.

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Section: Characterizationsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Facile and Scalable One-Step Method for Amination of Graphene Using Leuckart Reaction

et al. 2017

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“…Figure (a) indicates that the adsorption percentages of PFAAs are negatively correlated with sample pH value, and the high adsorption percentages occurred for four PFAAs at pH 2–3. In acidic medium, the surface of GO‐NH 2 was positively charged owing to protonation of amine groups (W. B. Zhang, Ma, et al, ), while PFAAs exist as neutral molecules. It is beneficial to interact between amino groups and PFAAs, leading to increases in adsorption amounts.…”

Section: Resultsmentioning

confidence: 99%

“…It is beneficial to interact between amino groups and PFAAs, leading to increases in adsorption amounts. With increasing pH value, hydroxy in solution is adsorbed on the surface of amino groups (W. B. Zhang, Ma, et al, ). When the pH is larger than the p K a value (0.921; see Supporting Information, Table S1), PFAAs present negative charges because of the deprotonation.…”

Section: Resultsmentioning

confidence: 99%

Solid‐phase extraction based on amino‐functionalized graphene oxide nanocomposites for analysis of short‐chain perfluorinated alkyl acids in human serum by ion chromatography mass spectrometry

Zhong

Guo

et al. 2018

Biomedical Chromatography

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A highly sensitive method was developed for the analysis of short-chain perfluorinated alkyl acids (PFAAs) in serum samples using solid-phase extraction (SPE) coupled with ion chromatography-electrospray ionization-mass spectrometry. The synthesized amino-functionalized graphene oxide nanocomposites were used as an SPE sorbent for the enrichment of trace analytes and purification of samples. They exhibited high selectivity to polar compounds. The suppressor was employed to remove counterions and reduce background signals of mobile phase. These two crucial steps could effectively eliminate matrix effects and enhance analytical sensitivity. The lowest limits of quantification were 2.0 μg L for perfluorobutanoic acid and perfluorovaleric acid, 1.0 μg L for perfluorocaproic acid and 0.50 μg L for perfluorobutane sulfonic acid, respectively. The procedure was successfully applied for determination of trace PFAAs in 25 serum samples. Mean recoveries ranged from 86.3 to 101.4% with relative standard deviations of 1.6-6.8%. The method allowed an excellent separation and quantification of short-chain PFAAs that were difficult to analyze by conventional chromatography.

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“…Recently, graphene oxide (GO) has been studied as additives for enhancement of mechanical and thermal properties of organic coatings like epoxy, polyurethane and polyacryliccoatings. [1][2][3] GO modified by polyisocianate was prepared and incorporated in polyurethane (PU) coating, which was applied on steel coated by epoxy coatings. [4] The surface modification by polyisocianate improved the dispersion of GO in PU coatings.…”

Section: Introductionmentioning

confidence: 99%

Corrosion protection of carbon steel by polyurethane coatings containing graphene oxide

Dương

Thao

et al. 2020

Vietnam Journal of Chemistry

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In this work, graphene oxide (GO) was prepared by modified Hummer's method. Polyurethane coatings with different GO concentrations (0.1‐0.5 %) were prepared for corrosion protection of carbon steel. Synthesized GO was characterized by FTIR and XRD. Corrosion resistance of polyurethane coatings containing GO was investigated by electrochemical impedance spectroscopy and salt fog test. The effects of GO on protection performance of polyurethane coatings depended on its dispersion ability. GO at a concentration of 0.1 % significantly improved corrosion resistance of polyurethane coatings.

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Preparation of amino-functionalized graphene oxide by Hoffman rearrangement and its performances on polyacrylate coating latex

Cited by 80 publications

References 43 publications

Facile and Scalable One-Step Method for Amination of Graphene Using Leuckart Reaction

Facile and Scalable One-Step Method for Amination of Graphene Using Leuckart Reaction

Solid‐phase extraction based on amino‐functionalized graphene oxide nanocomposites for analysis of short‐chain perfluorinated alkyl acids in human serum by ion chromatography mass spectrometry

Corrosion protection of carbon steel by polyurethane coatings containing graphene oxide

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