Two-Step Hydrothermal Synthesis of Doped Hydroxyapatite Nanorods

AP 19 – 18 – 300 698

Chemicals [CAS]

Chemicals
 (Name)

MW [g/mol]

Density [g/mL]

Amount [mmol]

Mass / Volume

13477-34-4

Calcium nitrate tetrahydrate

236.15

 

7.5

1.77 g

57-09-0

Cetyltrimethylammonium bromide

364.45

 

60

21.87 g

7783-28-0

Diammonium hydrogenphosphate

132.05

 

4.5

0.59 g

7803-49-8

Hydroxylamine (50%)

33.03

1.078

3

99 mg / 184 µL

 

Hydroxyapatite nanorods

502.31

 

4

2 g

7761-88-8

Silver nitrate

169.87

 

0.2

34 mg

7732-18-5

Water

18.02

0.997

solvent

60 mL / 50 mL

Keywords

Nanocrystals, nanoparticles, calcium hydroxyphosphate

Instrument

Monowave 300

Description

Step 1: The calcium precursor was dissolved together with CTAB as surfactant in 30 mL water. The hydrogenphosphate was separately dissolved in 30 mL water and the pH was adjusted with hydroxylamine to 10. This solution was added dropwise under stirring to the calcium solution. An aliquot (20 mL) was filled in a G30 vial and was subjected to microwave irradiation.

Step 2: Silver nitrate was added to the dispersion of the hydroxyapatite nanorods in 50 mL water and the mixture was stirred at room temperature for 5 min. An aliquot (max. 20 mL) was filled in a G30 vial and was subjected to microwave irradiation.

Workup

Step 1: The precipitate was centrifuged, washed with water and calcined at 550 °C.

Step 2: The precipitate was centrifuged, washed with water and dried at 50 °C

Comments

The morphology was characterized by FESEM, HRTEM and XRD.

The resulting nanomaterial was evaluated adsorption properties and antibacterial activity.

 

 

References

M. Sharma et al., J. Nanosci. Nanotechnol. 2018, 18, 623-633

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