Solid-liquid adsorption of calcium phosphate on TiO2

被引：49

作者：

Chusuei, CC ^{[1
]}

Goodman, DW ^{[1
]}

Van Stipdonk, MJ ^{[1
]}

Justes, DR ^{[1
]}

Loh, KH ^{[1
]}

Schweikert, EA ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Chem, Ctr Chem Characterizat & Anal, College Stn, TX 77842 USA

来源：

LANGMUIR | 1999年 / 15卷 / 21期

关键词：

D O I：

10.1021/la9905160

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Calcium phosphate (CP) in aqueous solution was exposed to thin-film TiO2 surfaces at predetermined times ranging from 10 min to 20 h using a liquid reaction apparatus (LRA). Surface analysis was then performed using X-ray photoelectron (XPS) and Auger electron (AES) spectroscopies and time-of-flight secondary ion mass spectrometry (ToF-SIMS) with polyatomic primary ions. XPS revealed that CP nucleated and grew on the TiO2 surface, with phosphate groups growing on top of an initial 2-dimensional (2D) Ca-rich layer. AES depth profiling of a 4-h solution exposure complemented this finding and gave additional evidence for 3-dimensional (3D) phosphate islands forming on top of the calcium. ToF-SIMS analysis of CP adsorbed on the surface indicated that the predominant phase on the surface was brushite, CaHPO4. 2H(2)O. A model for Ca2+ cation bridging at the oxide interface is proposed.

引用

页码：7355 / 7360

页数：6

共 40 条

[1] A XRD and TEM study on the transformation of amorphous calcium phosphate in the presence of magnesium [J].

Abbona, F ;

Baronnet, A .

JOURNAL OF CRYSTAL GROWTH, 1996, 165 (1-2) :98-105

[2]

Barr T. L., 1994, MODERN ESCA

[3] NATURE OF THE USE OF ADVENTITIOUS CARBON AS A BINDING-ENERGY STANDARD [J].

BARR, TL ;

SEAL, S .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS, 1995, 13 (03) :1239-1246

[4]

BEHRISCH R, 1981, SPUTTERING PARTICL 2, V52, P77

[5] FORMATION OF HYDROXYAPATITE AT LOW SUPERSATURATION [J].

BOSKEY, AL ;

POSNER, AS .

JOURNAL OF PHYSICAL CHEMISTRY, 1976, 80 (01) :40-45

[6]

BROWN WE, 1962, NATURE, V196, P1048, DOI 10.1038/1961048b0

[7] INTERLAYERING OF CRYSTALLINE OCTACALCIUM PHOSPHATE AND HYDROXYLAPATITE [J].

BROWN, WE ;

SCHROEDER, LW ;

FERRIS, JS .

JOURNAL OF PHYSICAL CHEMISTRY, 1979, 83 (11) :1385-1388

[8] CERAMIC THIN-FILM FORMATION ON FUNCTIONALIZED INTERFACES THROUGH BIOMIMETIC PROCESSING [J].

BUNKER, BC ;

RIEKE, PC ;

TARASEVICH, BJ ;

CAMPBELL, AA ;

FRYXELL, GE ;

GRAFF, GL ;

SONG, L ;

LIU, J ;

VIRDEN, JW ;

MCVAY, GL .

SCIENCE, 1994, 264 (5155) :48-55

[9] Liquid reaction apparatus for surface analysis [J].

Chusuei, CC ;

Murrell, TS ;

Corneille, JS ;

Nooney, MG ;

Vesecky, SM ;

Hossner, LR ;

Goodman, DW .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1999, 70 (05) :2462-2464

[10] Calcium phosphate phase identification using XPS and time-of-flight cluster SIMS [J].

Chusuei, CC ;

Goodman, DW ;

Van Stipdonk, MJ ;

Justes, DR ;

Schweikert, EA .

ANALYTICAL CHEMISTRY, 1999, 71 (01) :149-153

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