Superoleophilic and Superhydrophobic Inverse Opals for Oil Sensors

Authors

  • Huiling Li,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences Beijing, 100190 (P.R. China)
    2. Graduate School of the Chinese Academy of Sciences Beijing, 100049 (P.R. China)
    Search for more papers by this author
  • Jingxia Wang,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences Beijing, 100190 (P.R. China)
    Search for more papers by this author
  • Lianming Yang,

    1. Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences Beijing, 100190 (P.R. China)
    Search for more papers by this author
  • Yanlin Song

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences Beijing, 100190 (P.R. China)
    2. Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences Beijing, 100190 (P.R. China)
    • Beijing National Laboratory for Molecular Sciences (BNLMS), Laboratory of New Materials, Institute of Chemistry, Chinese Academy of Sciences Beijing, 100190 (P.R. China).
    Search for more papers by this author

  • The authors thank the NSFC (Grant Nos. 50625312, U0634004, and 20721061) and the 973 Program (No.2006CB806200, 2006CB932100, 2009CB930400, and 2006CB921706) for continuing financial support. The Chinese Academy of Sciences is gratefully acknowledged. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

An inverse opal with both superoleophilic (oil contact angle (CA), 5.1° ± 1.2°) and superhydrophobic (water CA, 153.8° ± 1.2°) properties is fabricated using a phenolic resin (PR) as precursor and poly(styrene-methyl methacrylate-acrylic acid) (poly(St-MMA-AA)) colloidal crystals as templates. The stopband of the inverse opal can shift reversibly upon sorption of oils, whereby the peak position is a linear function of the refractive index of the adsorbed oil, e.g., a variation in refractive index of 0.02 will result in a stopband shift of 26 nm. Therefore, the inverse opals show a high sensitivity and selectivity for different petroleum oils. Moreover, as-prepared PR inverse opals show excellent oil-sensing stability in cyclic sorption experiments, which suggests a promising and economical alternative to traditional oil-sensing materials, and will provide a new approach to in situ petroleum monitoring and detection.

Ancillary