Preparation of sulfonic-functionalized graphene oxide as ion-exchange material and its application into electrochemiluminescence analysis

Chen, Guifen; Zhai, Shenqiang; Zhai, Yanling; Zhang, Ke; Yue, Qiaoli; Wang, Lei; Zhao, Jinsheng; Wang, Huaisheng; Liu, Jifeng; Jia, Jianbo

doi:10.1016/j.bios.2010.12.015

Cited by 54 publications

(24 citation statements)

References 41 publications

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“…Then, magnetic graphene oxide (MGO) was synthesized by loading magnetic nanoparticles on the GO surface through chemical coprecipitation method [8]. Finally, MGO-SA was prepared by grafting sulfanilic acid on the MGO surface [16].…”

Section: Methodsmentioning

confidence: 99%

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Effects of background electrolytes and ionic strength on enrichment of Cd(II) ions with magnetic graphene oxide–supported sulfanilic acid

Liu

Zeng

et al. 2014

Journal of Colloid and Interface Science

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Section: Methodsmentioning

confidence: 99%

“…The first step is to prepare graphene oxide (GO) using a modified Hummers method [4,16,17]. Then, magnetic graphene oxide (MGO) was synthesized by loading magnetic nanoparticles on the GO surface through chemical coprecipitation method [8].…”

Section: Methodsmentioning

confidence: 99%

Effects of background electrolytes and ionic strength on enrichment of Cd(II) ions with magnetic graphene oxide–supported sulfanilic acid

Liu

Zeng

et al. 2014

Journal of Colloid and Interface Science

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“…In recent years, graphene oxide (GO) has attracted significant interest for the preparation of polymer composites due to its excellent mechanical [11], electrical and thermal properties, simple preparation technique and low cost [12]. GO can be regarded as graphene sheets derivatized with carboxylic groups at the edges and phenol, hydroxyl and epoxide groups on the basal planes [13][14][15]. These abundant oxygen-containing functional groups enable graphene to be further modified by chemical reactions, and thus many different functional groups can be introduced onto the graphene sheets.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal and mechanical properties of epoxy composites by mixing thermotropic liquid crystalline epoxy grafted graphene oxide

Qi¹,

Lu²,

Xiao³

et al. 2014

Express Polym. Lett.

109

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Abstract. Graphene oxide (GO) sheets were chemically grafted with thermotropic liquid crystalline epoxy (TLCP). Then we fabricated composites using TLCP-g-GO as reinforcing filler. The mechanical properties and thermal properties of composites were systematically investigated. It is found that the thermal and mechanical properties of the composites are enhanced effectively by the addition of fillers. For instance, the composites containing 1.0 wt% of TLCP-g-GO present impact strength of 51.43 kJ/m 2 , the tensile strength of composites increase from 55.43 to 80.85 MPa, the flexural modulus of the composites increase by more than 48%. Furthermore, the incorporation of fillers is effective to improve the glass transition temperature and thermal stability of the composites. Therefore, the presence of the TLCP-g-GO in the epoxy matrix could make epoxy not only stronger but also tougher.

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“…7) showed that the logarithmic ECL intensity exhibited a good linearity with the logarithmic TPA concentration ranging from 0.5 to 100 μM (R 2 = 0.993) with the detection limit (signal to noise of 3) of 0.4 nM. Our ECL sensor exhibited better performance compared with several previously reported sensors such as GO/Ru(II) complex, GR/Ru(bpy) 3 2+ and sulfonic-functionalized GO/Ru(bpy) 3 2+ (Table 1) [10,32,33]. The good performance was attributed to not only the fast electron transfer rate and mass transfer but also the large specific surface area which encapsulated more Ru(bpy) 3 2+ molecules.…”

Section: Resultsmentioning

confidence: 66%

Porous graphene containing immobilized Ru(II) tris-bipyridyl for use in electrochemiluminescence sensing of tripropylamine

Lin

et al. 2016

Microchim Acta

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Three-dimensional porous graphene (3D-pGR) was used to immobilize Ru(II) tris-bipyridyl [Ru(bpy) 3 2+ ] for electrochemiluminescence (ECL) based sensing of tripropylamine (TPA). The 3D-pGR with interpenetrating porous structures was produced from freeze-drying dispersions containing graphene oxide followed by calcination. Field emission scanning electron microscopy, Raman spectroscopy and X-ray photoelectron spectroscopy were used to characterize morphologies and the composition of the 3D-pGR. After immobilization of Ru(bpy) 3 2+ onto the electrodes, the results indicated that the ECL intensity from the 3D-pGR modified electrode was higher by a factor of 2.5 than that from the graphene film, which was attributed to a larger active surface area and faster electron transfer. The modified electrode was further used to determine TPA in water, and a good linear range from 0.5 to 100 μM with the detection limit as low as 0.4 nM was obtained. The ECL assay presented here also exhibits potential applications in detection of biomolecules such as DNA, glucose, thrombin, lysozyme, etc.

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Preparation of sulfonic-functionalized graphene oxide as ion-exchange material and its application into electrochemiluminescence analysis

Cited by 54 publications

References 41 publications

Effects of background electrolytes and ionic strength on enrichment of Cd(II) ions with magnetic graphene oxide–supported sulfanilic acid

Effects of background electrolytes and ionic strength on enrichment of Cd(II) ions with magnetic graphene oxide–supported sulfanilic acid

Enhanced thermal and mechanical properties of epoxy composites by mixing thermotropic liquid crystalline epoxy grafted graphene oxide

Porous graphene containing immobilized Ru(II) tris-bipyridyl for use in electrochemiluminescence sensing of tripropylamine

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