A Layered Titanium Phosphate Ti2O3(H2PO4)2·2H2O with Rectangular Morphology: Synthesis, Structure, and Cysteamine Intercalation
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- 作者：Lszl Krsi ; Szilvia Papp ; Imre Dkny
- 刊名：Chemistry of Materials
- 出版年：2010
- 出版时间：August 10, 2010
- 年：2010
- 卷：22
- 期：15
- 页码：4356-4363
- 全文大小：953K
- 年卷期：v.22,no.15(August 10, 2010)
- ISSN：1520-5002
文摘
Layered titanium phosphate (TiP) composed of rectangular-shaped lamellae was synthesized from titanium isopropoxide and orthophosphoric acid. The as-prepared TiP was refluxed in a 2-propanol/water mixture at 363 K for periods up to 144 h. The bulk and surface properties of the lamellar material with novel morphology were studied. The structural investigations and elemental analysis identified TiP as Ti2O3(H2PO4)2·2H2O. The reactions of the TiP samples with cysteamine (CEA) in aqueous suspensions afforded TiP/CEA intercalation complexes. X-ray measurements on these complexes revealed CEA monolayers incorporated between the TiP lamellae, increasing the original basal spacing from 1.00 nm to 1.43 nm. The enthalpy change of the intercalation reaction was measured by isothermal titration calorimetry. The amount of CEA adsorbed was determined, and differential adsorption enthalpy was calculated via the mass balance.