A core-shell structure au@sno 2 Nanoparticles and preparation method thereof
A nanoparticle, core-shell structure technology, applied in the field of core-shell structure Au@SnO2 nanoparticles and its preparation, can solve the problems of cumbersome synthesis steps, low synthesis yield, harsh synthesis conditions, etc., and achieve simple reaction conditions, The effect of simple equipment and simple preparation method
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Embodiment 1
[0037] A core-shell structure of Au@SnO 2 A preparation method for nanoparticles, the preparation method comprising the following steps:
[0038] S1: Preparation of seed solution: Take 10 mL of 0.1 M CTAB aqueous solution in a test tube, and then add 125 μL of 0.01 M HAuCl 4 aqueous solution, and finally add 900 μL of freshly prepared 0.01M NaBH 4 Ice-water solution, shake well and place the solution in an oven at 35°C for 2 hours;
[0039] S2: Preparation of AuNR nanoparticles: Take 40mL of 0.1M CTAB aqueous solution in a beaker, add 1.75mL of 0.01M HAuCl in turn 4 Aqueous solution, 400 μL of 0.01M AgNO 3 Aqueous solution, 800 μL of 1M HCl solution, 320 μL of 0.1M ascorbic acid aqueous solution was added under stirring conditions, and 100 μL of the above seed solution was added immediately after it became colorless, and placed in an oven at 35°C for 12 hours; AuNR nanoparticle solution was obtained; After the AuNR nanoparticle solution was centrifuged, its extinction spec...
Embodiment 2
[0044] A core-shell structure of Au@SnO 2 A preparation method for nanoparticles, the preparation method comprising the following steps:
[0045] S1: Preparation of seed solution: Take 10 mL of 0.15 M CTAB aqueous solution in a test tube, and then add 150 μL of 0.015 M HAuCl 4 aqueous solution, and finally add 1200 μL of freshly prepared 0.015M NaBH 4 Ice-water solution, shake well and place the solution in an oven at 35°C for 2 hours;
[0046] S2: Preparation of AuNR nanoparticles: Take 50mL of 0.08M CTAB aqueous solution in a beaker, add 2.0mL of 0.012M HAuCl in turn 4 Aqueous solution, 500 μL of 0.008M AgNO 3 Aqueous solution, 1000 μL of 1.3M HCl solution, 500 μL of 0.1M ascorbic acid aqueous solution was added under stirring conditions, and 150 μL of the above seed solution was added immediately after it became colorless, and placed in an oven at 35°C for 12 hours; AuNR nanoparticle solution was obtained;
[0047] S3: Au@SnO 2 Preparation of nanoparticles: Take 20mL o...
Embodiment 3
[0050] A core-shell structure of Au@SnO 2 A preparation method for nanoparticles, the preparation method comprising the following steps:
[0051] S1: Preparation of seed solution: Take 10mL of 0.15M CTAB aqueous solution in a test tube, then add 300μL of 0.005M HAuCl 4 aqueous solution, and finally add 1200 μL of freshly prepared 0.015M NaBH 4 Ice-water solution, shake well and place the solution in an oven at 35°C for 2 hours;
[0052] S2: Preparation of AuNR nanoparticles: Take 30mL of 0.15M CTAB aqueous solution in a beaker, add 2.0mL of 0.015M HAuCl in turn 4 Aqueous solution, 500 μL of 0.015M AgNO 3 Aqueous solution, 900 μL of 1.5M HCl solution, 600 μL of 0.1M ascorbic acid aqueous solution was added under stirring conditions, and 200 μL of the above seed solution was added immediately after it became colorless, and placed in an oven at 35°C for 12 hours; AuNR nanoparticle solution was obtained;
[0053] S3: Au@SnO 2 Preparation of nanoparticles: Take 10mL of the pre...
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