Facile preparation of raisin-bread sandwich-structured magnetic graphene/mesoporous silica composites with C18-modified pore-walls for efficient enrichment of phthalates in environmental water

Journal of Chromatography. a
Danni HuangXiangmin Zhang

Abstract

In this study, novel raisin-bread sandwich-structured magnetic graphene/mesoporous silica composites with C18-modified interior pore-walls (mag-graphene@mSiO2-C18) were synthesized by coating mesoporous silica layers onto each side of magnetic graphene through a surfactant-mediated co-condensation sol-gel process. The prepared functionalized nanocomposites possessed marvelous properties of extended plate-like morphology, fine water dispersibility, high magnetic response, large surface area (315.4cm(2)g(-1)), uniform pore size (3.3nm) and C18-modified interior pore-walls. Several kinds of phthalates were selected as model analytes to systematically evaluate the performance of adsorbents in extracting hydrophobic molecules followed by gas chromatography-mass spectrometry analyses. Various extraction parameters, including pH value of sample solution, amounts of adsorbents, adsorption time, species and volume of eluting solvent, and desorption time were optimized. The anti-interference ability to macromolecular proteins was also investigated. Method validations such as linearity, recovery, reproducibility, and limit of detection were also studied. Finally, mag-graphene@mSiO2-C18 composites were successfully applied to analyzing pht...Continue Reading

References

Oct 1, 1979·The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society·H G Rennke, M A Venkatachalam
Sep 5, 2009·Analytical and Bioanalytical Chemistry·Silvia López-FeriaMiguel Valcárcel
Aug 12, 2010·Journal of the American Chemical Society·Lena Ai Ling TangKian Ping Loh
Mar 27, 2012·Journal of Colloid and Interface Science·Shanshan HuangJun Lin
May 5, 2012·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·T FierensG Vanermen

Citations

Jul 18, 2015·Critical Reviews in Analytical Chemistry·Wan Aini Wan IbrahimMohd Marsin Sanagi

Related Concepts

Phthalic acid, sodium salt
Adsorption
Graphene
Chromatography, Gas-Liquid-Mass Spectrometry
Phthalic Acids
Quso G-32
Landfill Leachate
Reproducibility of Results
Solid Phase Extraction
Nanocomposites

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