Preparation method of beta-tricalcium phosphate nanometer coating
A technology of tricalcium phosphate nanometer and tricalcium phosphate, which is applied in the direction of coating, electrolytic coating, electrophoretic plating, etc., can solve the problems of high equipment price, high requirements for preparation environment conditions, and complicated operation, so as to enhance the binding force and avoid Phase change and embrittlement, energy saving effect
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[0044] Example 1
[0045] The preparation of the β-TCP nanocoating of this embodiment includes the following steps:
[0046] (1) With 0.45mol / L Ca(NO 3 ) 2 ·4H 2 O solution is calcium source, 0.5mol / L (NH 4 ) 2 HPO 4 The solution is phosphorus source, adjust the amount of calcium source and phosphorus source to control the molar ratio of Ca / P to 1.5; add dispersant polyethylene glycol to calcium source and stir evenly; use ammonia water to adjust the pH of phosphorus source solution to 9.0; The phosphorus source solution was added dropwise to the calcium source solution under the condition of stirring at 400 r / min. During the dropping process, the pH of the reaction solution system was kept at 7.0. Washed with deionized water until the pH of the supernatant was 7.0, freeze-dried, and calcined at 800 °C for 3 h to obtain β-TCP powder;
[0047] figure 1 It is the XRD pattern of the synthesized β-TCP powder. It can be seen from the figure that the synthesized powder is a ...
Example Embodiment
[0056] Example 2
[0057] The preparation of the β-TCP nanocoating of this embodiment includes the following steps:
[0058] (1) With 0.45mol / L Ca(NO 3 ) 2 ·4H 2 O solution is calcium source, 0.5mol / L (NH 4 ) 2 HPO 4 The solution is phosphorus source, adjust the dosage of calcium source and phosphorus source to control the molar ratio of Ca / P to 1.5; add dispersant polyethylene glycol into calcium source and stir evenly; adjust the pH of phosphorus source solution with ammonia water to 9.0; The solution was added dropwise to the calcium source solution under the stirring condition of 400r / min. During the dropwise addition, the pH of the reaction solution system was kept at 7.0. After the dropwise addition, the stirring was continued for 10h, aged for 2d, filtered, and deionized water was used. Washed until the pH of the supernatant was 7.0, freeze-dried, and calcined at 800 °C for 3 h to obtain β-TCP powder;
[0059] (2) Weighing the prepared β-TCP powder, adding it int...
Example Embodiment
[0067] Example 3
[0068] The β-TCP nanocoating obtained by electrophoretic deposition under the electric field strength of 25V / cm for 5min was used in QCM-D technology to study the adsorption behavior of bovine serum albumin (BSA) on it, including the following steps:
[0069] (1) The preparation of β-TCP nanocoating is the same as in Example 1, and the electrophoretic deposition time is 5min;
[0070] (2) The adsorption behavior of bovine serum albumin (BSA) on the β-TCP nanocoating was studied by QCM-D technology, and BSA was dissolved in PBS buffer solution to prepare a 1 mg / ml bovine serum albumin solution. The PBS buffer solution was introduced first, and the BSA solution was introduced after the baseline equilibrium was stable, and the adsorption was observed until the adsorption reached equilibrium.
[0071] Figure 9 and Figure 10 are the frequency Δf and dissipation value ΔD of BSA adsorbed on β-TCP nanocoatings with time, respectively. It can be seen from the fi...
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