Chemical force microscopy investigation of phosphate adsorption on the surfaces of iron(III) oxyhydroxide particles.

@article{Kreller2002ChemicalFM,
  title={Chemical force microscopy investigation of phosphate adsorption on the surfaces of iron(III) oxyhydroxide particles.},
  author={D I Kreller and Glenn Gibson and Gary W Vanloon and J Hugh Horton},
  journal={Journal of colloid and interface science},
  year={2002},
  volume={254 2},
  pages={205-13}
}
Phosphate-modified AFM tips were prepared by the deposition of self-assembled monolayers (SAMs) of bis(11-thioundecyl) phosphate on Au-coated silicon nitride cantilevers. The properties of the PO(2)H-terminated SAMs were investigated by studying the pH-dependent force interactions of the tips with phosphate- and carboxylic acid-terminated SAM control surfaces. The PO(2)H functional groups had a pK(a) of approximately 5.0. A chemical force microscopy (CFM) study was conducted on the interactions… CONTINUE READING