Sol-hydrothermal synthesis of inorganic-framework molecularly imprinted TiO2 nanoparticle and its enhanced photocatalytic activity for degradation of target pollutant

Fang Deng, Xiang Zhao, Xule Pei, Xubiao Luo*, Wentao Li, Chak Tong AU

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Molecularly imprinted TiO2 (MIP-TiO2) nanoparticles with molecular recognition ability were prepared by solhydrothermal method. The hydrothermal temperature and time were optimized. MIP-TiO2 shows higher adsorption capacity and selectivity than the non-imprinted TiO2 (NIP-TiO2). Kinetics studies show that the adsorption of target molecules on MIP-TiO2 is fast. The good performance is attributed to (i) abundance of adsorption sites, (ii) good affinity of imprinted cavities towards target molecules, and (iii) geometric matching between target molecules and imprinted cavities. The photocatalytic activity of MIP/TiO2 (0.0167 min-1) is approximately four times that of NIP-TiO2 (0.00429 min-1). With a stable inorganic framework and active sites facilely released during regeneration, MIP-TiO2 is highly reusable.

Original languageEnglish
Pages (from-to)1079-1085
Number of pages7
JournalScience of Advanced Materials
Volume8
Issue number5
DOIs
Publication statusPublished - 2016

Scopus Subject Areas

  • Materials Science(all)

User-Defined Keywords

  • Molecular recognition
  • Molecularly imprinted photocatalyst
  • Sol-Hydrothermal method
  • TiO nanoparticle

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