CIESC Journal ›› 2020, Vol. 71 ›› Issue (10): 4704-4710.doi: 10.11949/0438-1157.20200210

• Separation engineering • Previous Articles     Next Articles

Molecularly imprinted materials with core-shell structure for directed desiccation

Zhuangfei JIANG1,Jiayuan HE1,Rongrong MA1,Qingyao LI1,Lili YANG1,Ling TAN2,Qihui ZHANG1()   

  1. 1.School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, China
    2.School of Pharmacy, Chongqing University, Chongqing 400044, China
  • Received:2020-03-02 Revised:2020-04-14 Online:2020-10-05 Published:2020-04-29
  • Contact: Qihui ZHANG


SiO2 as the support material, methacrylic acid (MAA) as the functional monomer, azodiisobutyronitrile (AIBN) as the initiator, ethylene glycol dimethacrylate (EGDMA) as the cross-linking agent, a surface molecularly imprinted polymer (SMIPs) material which can selectively absorb bitter substances in lemon juice was prepared. Transmission electron microscopy and infrared absorption spectroscopy were used to characterize the SMIPs, followed by adsorption capacity and selectivity studies. The results showed that SMIPs had core-shell structure, good adsorption performance (27.72 mg/g) and fast adsorption capacity (60 min). The adsorption was in accordance with the second-order kinetic model, and the adsorption process was in accordance with the Langmuir monolith adsorption model. Finally, SMIPs were used to remove the bitter substance evodine in lemon juice, and the result showed that SMIPs had good desiccation ability.

Key words: core-shell material, nanomaterials, silica, surface molecular imprinting, sorbents, bitter substances, take off the bitter

CLC Number: 

  • R 917


Schematic representation of the preparation of surface molecularly imprinted materials and the process of debitterization"


Optimization of synthesis conditions"


Characterization of surface molecularly imprinted materials"


Adsorption capacity of materials"

Table 1

Relevant parameters of pseudo-first-order and pseudo-second-order model"










Table 2

Relevant parameters of Langmuir and Freundlich equation"











Liquid chromatogram of demitoring process of lemon juice by surface molecularly imprinted materials"

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