An ex situ study of the adsorption of calcium phosphate from solution onto TiO2(110) and Al2O3(0001)

M Murphy; M S Walczak; H Hussain; M J Acres; C A Muryn; Andrew Thomas; N Silikas; R Lindsay

doi:10.1016/j.susc.2015.08.040

An ex situ study of the adsorption of calcium phosphate from solution onto TiO2(110) and Al2O3(0001)

M Murphy, M S Walczak, H Hussain, M J Acres, C A Muryn, Andrew Thomas, N Silikas, R Lindsay

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Abstract

Ex situ atomic force microscopy and x-ray photoelectron spectroscopy are employed to characterise the adsorption of calcium phosphate from an aqueous solution of CaCl2.H2O and KH2PO4 onto rutile-TiO2(110) and α-Al2O3(0001). Prior to immersion, the substrates underwent wet chemical preparation to produce well-defined surfaces. Calcium phosphate adsorption is observed on both rutile-TiO2(110) and α-Al2O3(0001), with atomic force microscopy images indicating island-type growth. In contrast to other studies on less well-defined TiO2 and Al2O3 substrates, the induction period for calcium phosphate nucleation appears to be comparable on these two surfaces.

Original language	English
Journal	Surface Science
DOIs	https://doi.org/10.1016/j.susc.2015.08.040
Publication status	Published - 6 Sept 2015

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10.1016/j.susc.2015.08.040Licence: CC BY-NC-ND

POST-PEER-REVIEW-NON-PUBLISHERS.PDFAccepted author manuscript, 10.3 MBLicence: CC BY-NC-ND

http://- http://www.sciencedirect.com/science/article/pii/S0039602815002691Licence: CC BY-NC-ND

Near-Ambient Pressure X-ray Photoemission Spectroscopy (NAP-XPS)
Dwyer, L. (Technical Specialist) & Walton, A. (Academic lead)
Materials Engineering
Facility/equipment: Facility

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@article{d3fc6bdb6cc641dda5cbafa935acec13,

title = "An ex situ study of the adsorption of calcium phosphate from solution onto TiO2(110) and Al2O3(0001)",

abstract = "Ex situ atomic force microscopy and x-ray photoelectron spectroscopy are employed to characterise the adsorption of calcium phosphate from an aqueous solution of CaCl2.H2O and KH2PO4 onto rutile-TiO2(110) and α-Al2O3(0001). Prior to immersion, the substrates underwent wet chemical preparation to produce well-defined surfaces. Calcium phosphate adsorption is observed on both rutile-TiO2(110) and α-Al2O3(0001), with atomic force microscopy images indicating island-type growth. In contrast to other studies on less well-defined TiO2 and Al2O3 substrates, the induction period for calcium phosphate nucleation appears to be comparable on these two surfaces.",

author = "M Murphy and Walczak, \{M S\} and H Hussain and Acres, \{M J\} and Muryn, \{C A\} and Andrew Thomas and N Silikas and R Lindsay",

note = "MM acknowledges financial support from EPSRC (EP/G036950/1) through the Advanced Metallic Systems Centre for Doctoral Training. MSW thanks AkzoNobel for funding her postdoctoral research associate position. HH and MJA both acknowledge BP for providing funds through a BP-ICAM project.",

year = "2015",

month = sep,

day = "6",

doi = "10.1016/j.susc.2015.08.040",

language = "English",

journal = "Surface Science",

issn = "0039-6028",

publisher = "Elsevier BV",

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TY - JOUR

T1 - An ex situ study of the adsorption of calcium phosphate from solution onto TiO2(110) and Al2O3(0001)

AU - Murphy, M

AU - Walczak, M S

AU - Hussain, H

AU - Acres, M J

AU - Muryn, C A

AU - Thomas, Andrew

AU - Silikas, N

AU - Lindsay, R

N1 - MM acknowledges financial support from EPSRC (EP/G036950/1) through the Advanced Metallic Systems Centre for Doctoral Training. MSW thanks AkzoNobel for funding her postdoctoral research associate position. HH and MJA both acknowledge BP for providing funds through a BP-ICAM project.

PY - 2015/9/6

Y1 - 2015/9/6

N2 - Ex situ atomic force microscopy and x-ray photoelectron spectroscopy are employed to characterise the adsorption of calcium phosphate from an aqueous solution of CaCl2.H2O and KH2PO4 onto rutile-TiO2(110) and α-Al2O3(0001). Prior to immersion, the substrates underwent wet chemical preparation to produce well-defined surfaces. Calcium phosphate adsorption is observed on both rutile-TiO2(110) and α-Al2O3(0001), with atomic force microscopy images indicating island-type growth. In contrast to other studies on less well-defined TiO2 and Al2O3 substrates, the induction period for calcium phosphate nucleation appears to be comparable on these two surfaces.

AB - Ex situ atomic force microscopy and x-ray photoelectron spectroscopy are employed to characterise the adsorption of calcium phosphate from an aqueous solution of CaCl2.H2O and KH2PO4 onto rutile-TiO2(110) and α-Al2O3(0001). Prior to immersion, the substrates underwent wet chemical preparation to produce well-defined surfaces. Calcium phosphate adsorption is observed on both rutile-TiO2(110) and α-Al2O3(0001), with atomic force microscopy images indicating island-type growth. In contrast to other studies on less well-defined TiO2 and Al2O3 substrates, the induction period for calcium phosphate nucleation appears to be comparable on these two surfaces.

U2 - 10.1016/j.susc.2015.08.040

DO - 10.1016/j.susc.2015.08.040

M3 - Article

SN - 0039-6028

JO - Surface Science

JF - Surface Science

ER -

An ex situ study of the adsorption of calcium phosphate from solution onto TiO2(110) and Al2O3(0001)

Abstract

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Equipment

Near-Ambient Pressure X-ray Photoemission Spectroscopy (NAP-XPS)

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