Method for producing calcium phosphate-coated titanium dioxide and kit for production

Abstract

To provide a method for producing calcium phosphate-coated titanium dioxide that does not require a washing step to remove salt. [Solution] A method for producing calcium phosphate (preferably hydroxyapatite) coated titanium dioxide, comprising the steps of: heating a calcium-containing solution (hereinafter referred to as "solution A"); dispersing titanium dioxide, preferably titanium dioxide having photocatalytic activity, in the heated solution A; and adding a phosphoric acid-containing solution (hereinafter referred to as "solution B") to the solution A in which the titanium dioxide is dispersed, wherein the amount of calcium ions, sodium ions, potassium ions, and chloride ions contained in the reaction solution containing solutions A and B is 10 to 50 mmol, per 1 mol of titanium dioxide used is 10 to 1000 mmol, per 1 mol of titanium dioxide used is 10 to 1000 mmol.

Claims

1. A step of heating a calcium-containing solution (hereinafter referred to as "Solution A"), The steps include dispersing titanium dioxide in the heated solution A, and The process involves adding a phosphoric acid-containing solution (hereinafter referred to as "solution B") to solution A, which contains dispersed titanium dioxide. A method for producing calcium phosphate-coated titanium oxide, comprising: A method for producing titanium dioxide used, wherein the reaction solution containing solution A and solution B contains 10 to 50 mmol of calcium ions, 10 to 1000 mmol of sodium ions, 5 to 40 mmol of potassium ions, and 10 to 1000 mmol of chloride ions per 1 mol of titanium dioxide used.

2. The manufacturing method according to claim 1, wherein the aforementioned solution A is obtained by dissolving calcium hydroxide.

3. The manufacturing method according to claim 2, wherein the calcium hydroxide is derived from eggshells.

4. The manufacturing method according to claim 1, wherein the calcium phosphate is hydroxyapatite.

5. The manufacturing method according to claim 1, wherein the titanium dioxide is titanium dioxide having photocatalytic activity.

6. A kit for producing calcium phosphate-coated titanium dioxide, comprising a calcium-containing solution (hereinafter referred to as Solution A), a phosphoric acid-containing solution (hereinafter referred to as Solution B), and titanium dioxide, A kit in which, per 1 mol of titanium dioxide, the reaction solution containing solutions A and B contains 10 to 50 mmol of calcium ions, 10 to 1000 mmol of sodium ions, 5 to 40 mmol of potassium ions, and 10 to 1000 mmol of chloride ions.

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