Gold-terbium alloy nanosphere and preparation method and application thereof
A technology of alloy nano and gold terbium, which is applied in the field of nano materials, can solve the problems of high price, the conductivity and electrocatalytic activity of single metal nano materials need to be further improved, and the unfavorable general application, etc., to achieve uniform distribution, ensure performance, and ensure spherical shape degree of effect
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[0033] The present invention also provides a preparation method of the gold terbium alloy nanosphere described in the above technical solution, comprising the following steps:
[0034] mixing reducing agent, polyvinylpyrrolidone, gold source, terbium source and water to obtain a precursor solution;
[0035] The precursor solution is subjected to hydrothermal reaction and after-treatment to obtain the gold terbium alloy nanospheres.
[0036] The invention mixes reducing agent, polyvinylpyrrolidone, gold source, terbium source and water to obtain precursor solution.
[0037] In the present invention, the reducing agent preferably includes ascorbic acid or glucose, more preferably ascorbic acid; the gold source is preferably chloroauric acid, gold thiosulfate or gold sulfite, more preferably chloroauric acid; The gold salt of thiosulfate is preferably sodium gold thiosulfate; the gold salt of sulfite is preferably sodium gold sulfite. In the present invention, the terbium sourc...
Embodiment 1
[0053] (1) Weigh 0.35g of ascorbic acid and 0.45g of polyvinylpyrrolidone and dissolve them in 28mL of deionized water, then add 1mL of chloroauric acid (concentration of 21mM) and 1mL of terbium chloride (concentration of 7mM), and ultrasonicate for 10min under the condition of 9000W Mix the solution evenly to obtain a precursor solution;
[0054] (2) Transfer the above precursor solution to a 50mL polytetrafluoroethylene liner, protect it in a stainless steel autoclave, place it in a resistance furnace, set the temperature at 160°C, and calcinate it in an air atmosphere for 24h (hydrothermal reaction); Transfer the hydrothermal reaction liquid to a 50mL beaker, add ethanol and ultrasonically wash it for 20min, then centrifuge the hydrothermal reaction liquid at 4000r / min for 15min, wash the obtained precipitate twice with ethanol, and then wash it with deionized water Wash once, and finally dry at 90° C. for 5 hours to obtain gold terbium alloy nanospheres.
[0055] figure...
Embodiment 2
[0058] (1) Weigh 0.3g of ascorbic acid and 0.35g of polyvinylpyrrolidone and dissolve them in 28mL of deionized water, then add 1mL of chloroauric acid (concentration of 18mM) and 1mL of terbium chloride (concentration of 6mM), and ultrasonicate for 10min under the condition of 8000W Mix the solution evenly to obtain a precursor solution;
[0059] (2) Transfer the above precursor solution to a 50mL polytetrafluoroethylene lining, and protect it in a stainless steel autoclave, place it in a resistance furnace and set the temperature at 170°C for calcination for 30h (hydrothermal reaction); hydrothermal reaction The solution was transferred to a 50mL beaker, and ethanol was added for ultrasonic washing for 30min, and then the hydrothermal reaction solution after ultrasonic was centrifuged at 6000r / min for 15min, and the obtained precipitate was washed twice with ethanol, and then washed once with deionized water. Dry at 70°C for 8 hours to obtain gold terbium alloy nanospheres. ...
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