Selective separation of salicylic acid from aqueous solutions using molecularly imprinted nano-polymer on wollastonite synthesized by oil-in-water microemulsion method

Minjia Meng, Yonghai Feng, Weisheng Guan, Yan Liu, Yanfang Xi, Yongsheng Yan

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Highly effective molecularly imprinted nano-polymer on wollastonite (nano-WMIP) was prepared by imprinting technique using oil-in-water emulsion polymerization in the presence of salicylic acid (SA) as template. The adsorption behavior of nano-WMIP including adsorption kinetic, isotherms, selective adsorption, recognition, and effects of initial pH, ionic strength, initial concentration, adsorption temperature, and amount of adsorbents were investigated in detail. Moreover, the selective recognition of nano-WMIP was further investigated by HPLC toward analogs of SA. The relative selectivity coefficients for p-HB, MS, and MP were 113.4, 8.049, and 6.239, respectively, showing that much higher selectivity of SA on nano-WMIP was obtained than that of wollastonite-based non-imprinted polymer (nano-WNIP).

Original languageEnglish
Pages (from-to)3975-3983
Number of pages9
JournalJournal of Industrial and Engineering Chemistry
Volume20
Issue number6
DOIs
StatePublished - 25 Nov 2014
Externally publishedYes

Keywords

  • Imprinting technique
  • Nano-polymer
  • Oil-in-water emulsion
  • Salicylic acid

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