A porous carbon absorbent based on high internal phase emulsion for separation and enrichment of trifluralin from soil


A porous carbon absorbent was obtained by using high internal phase emulsions (HIPEs) polymerization followed by high temperature carbonization under nitrogen protection. Graphene oxide (GO) and silica nanoparticles were doped into the HIPEs to enhance the adsorption ability and reusability. Fourier infrared spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy were used for characterization and several parameters of separation and enrichment of trifluralin. The results showed that a hyper-crosslink framework material was obtained with abundant porous (pore size of about 30 μm) and a good adsorption and separation efficiency. The adsorption rate was up to 100% and trifluralin was completely eluted from the absorbent by 2.0 mL of an acetic acid-acetonitrile mixture.

Schematic representation of synthesis of porous carbon absorbent by GO and SiO2 doped HIPEs.

POLYHIPES-GO&SiO2: Polymerized High Internal Phase Emulsions doped with Silica and Graphene oxide.

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This research was supported by the National Natural Science Foundation of China (Grant No. 21665006, 21964006), the Natural Science Foundation from Guangxi Zhuang Autonomous Region (No. 2017GXNSFAA198236), and Research program of Guangxi specially-invited experts (Key technologies for intensive processing and quality safety of agricultural products) TingFa [2018], respectively.

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Correspondence to Guihua Ruan or Zhengyi Chen.

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Yuan, H., Ruan, G., Chen, Z. et al. A porous carbon absorbent based on high internal phase emulsion for separation and enrichment of trifluralin from soil. Microchim Acta 187, 138 (2020). https://doi.org/10.1007/s00604-019-4086-1

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  • Porous carbon absorbent
  • High internal phase emulsions
  • Hyper-crosslinked framework
  • Sample preparation