Capillary column coated with graphene quantum dots for gas chromatographic separation of alkanes and aromatic isomers

Zhang, Xueyan; Ji, Hongyun; Zhang, Xudong; Wang, Zhen; Xiao, Dingquan

doi:10.1039/c4ay03068k

Cited by 31 publications

(11 citation statements)

References 48 publications

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“…Xylenes separation employed GC with stationary phase of graphene quantum dots (GQDs) for the first time, as GQDs were mainly applied in bioimaging, biosensing, drug/gene delivery, and anticancer agents conventionally. Experiments obtained a baseline separation of EB, PX, and OX with elution time increasing in sequence of EB < PX < OX within 5 min at 50 °C, consistent with their boiling point, while PX and MX shared the same retention time.…”

Section: Other Materialsmentioning

confidence: 99%

“…Selectivity values were 1.32 and 1.15 for PX/OX and EB/PX, respectively. Weaker van der Waals interaction between EB and stationary phase resulted in separation of EB and PX, and mostly was retained of OX due to a combination of stronger van der Waals interaction, hydrogen-bonding, and higher polarity of OX …”

Section: Other Materialsmentioning

confidence: 99%

“…Weaker van der Waals interaction between EB and stationary phase resulted in separation of EB and PX, and mostly was retained of OX due to a combination of stronger van der Waals interaction, hydrogenbonding, and higher polarity of OX. 186 Table 9 summarizes chromatographic separation of xylene isomers. MAF-6, HKUST-1, PCL-Diol, UiO-66@SiO 2 , and MIL-53(Al) manifest excellent separation performances.…”

Section: Other Materialsmentioning

confidence: 99%

See 2 more Smart Citations

Separation of Xylene Isomers: A Review of Recent Advances in Materials

Yang

Bai

Guo

2017

Ind. Eng. Chem. Res.

212

213

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The xylene isomers p-xylene, o-xylene, and m-xylene are aromatic hydrocarbons comprising with two methyl groups located at different positions on a benzene ring. The mixture originates from catalytic reforming of crude oil, and each individual isomer acts as a valuable intermediate; however, similar physicochemical properties make their separation difficult. This Review focuses on materials employed for their separation, such as metal−organic frameworks, molecular sieves, organics, and graphene quantum dots. Recent advances in separation of xylene isomers are summarized, including adsorption, membrane, and chromatographic separation techniques, and adsorption capacity and selectivity combined with mechanisms of separation are discussed.

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Section: Other Materialsmentioning

confidence: 99%

Section: Other Materialsmentioning

confidence: 99%

Section: Other Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Separation of Xylene Isomers: A Review of Recent Advances in Materials

Yang

Bai

Guo

2017

Ind. Eng. Chem. Res.

212

213

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show abstract

“…Presynthesized porous materials to be deposited onto the capillary inner surface are suspended in a suitable solvent which is used later to deposit porous matter onto capillary walls by means of static [4] or dynamic [5] tech-Article Related Abbreviations: APS, (3-aminopropyl)triethoxysilane; HCLP, hypercrosslinked polymer; MPIP, membrane polymer with intrinsic porosity; OT, open tubular; PDA, phenylene diamine; PLOT, porous layer open tubular; PVBC, poly(vinyl benzylidene chloride); TGA, thermogravimetric analysis; WCOT, wall coated open tubular nique. Suspension must be stable enough to prevent sedimentation of the porous material during coating procedure, consequently, colloidal solutions are frequently used to deposit porous material onto capillary walls [4][5][6][7]. This technique was particularly useful depositing graphene [8] and MOF's [9].…”

Section: Introductionmentioning

confidence: 99%

Preparation and properties of GC capillary column with hypercrosslinked stationary phase

Kanat’eva

Korolev

Kurganov

2021

J of Separation Science

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For the first time, highly porous hypercrosslinked polystyrene layer was synthesized within a gas chromatography capillary column and successfully deposited onto the capillary walls generating porous layer open-tubular capillary column.Elaborated three steps synthetic procedure provides tightly bonded porous polymeric layer and ensues complete elimination of particle shedding and the needs for particle traps. Due to highly developed surface area, porous layer opentubular column provides strong solute retention that is useful for the separation of various volatile solvents and light gas compounds including ethane, ethylene, ethyne. Aqueous injections will not harm the column.

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“…GQDs, which consist of single atomic layer of nano-sized graphite, possess most advantages of graphene and graphene oxide (Zhang et al, 2015). Wolk et al (2018) modified the surface of GQDs with dodecyl amine and spray coated the functionalized GQDs as thin lubricating layer on surface of steel.…”

Section: Introductionmentioning

confidence: 99%

Comparing the corrosion protection performance of graphene nanosheets and graphene quantum dots as nanofiller in epoxy coatings

Pourhashem¹,

Rashidi²,

Vaezi

2019

ILT

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Purpose In this research, the effect of graphene nanosheets and graphene quantum dots (GQDs) as carbon-based nanofillers on corrosion protection performance of epoxy coatings is considered. Design/methodology/approach Graphene nanosheets are synthesized via chemical vapor deposition method, and GQDs are synthesized by a simple and gram scale procedure from carbon black. The prepared nanofillers are characterized by X-ray diffraction technique, Fourier transform infrared spectroscopy and transmission electron microscopy. Further, solvent-based epoxy coatings containing 0.1 Wt.% graphene nanosheets and GQDs are prepared, and the corrosion resistance of nanocomposite coatings is considered by electrochemical impedance spectroscopy. Findings The results indicate that both epoxy/graphene nanosheets and epoxy/GQDs samples have significantly higher corrosion resistance than pure epoxy coating. Meanwhile, GQDs can more effectively enhance the corrosion protection performance of epoxy coatings compared to graphene sheets, which can be attributed to the presence of functional groups on GQDs and improving the dispersion quality in polymer matrice. Originality/value In this research, for the first time, the graphene quantum dots (GQDs) prepared by a “top-down” method from carbon black are used as nanofiller in epoxy coatings, and the potential application of graphene nanosheets and GQDs as anti-corrosion nanofiller in epoxy coatings is investigated.

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Capillary column coated with graphene quantum dots for gas chromatographic separation of alkanes and aromatic isomers

Abstract: A GQD coated capillary column has been employed for the first time for successful separation of alkanes and aromatic isomers at low temperature in a short time.

Cited by 31 publications

References 48 publications

Separation of Xylene Isomers: A Review of Recent Advances in Materials

Separation of Xylene Isomers: A Review of Recent Advances in Materials

Preparation and properties of GC capillary column with hypercrosslinked stationary phase

Comparing the corrosion protection performance of graphene nanosheets and graphene quantum dots as nanofiller in epoxy coatings

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