Method for preparing silver nanoparticle/titanium dioxide nanotube array
A nanotube array and silver nanoparticle technology, applied in the field of materials, can solve the problems of complex process conditions, small adhesion, poor controllability of silver nanoparticle size and dispersion, and achieve good controllability and uniform size , The effect of simple preparation process
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[0037] The invention provides a method for preparing a silver nanoparticle / titanium dioxide nanotube array, comprising:
[0038] The solution containing silver ions, the titanium dioxide nanotube array and glucose are mixed and reacted to obtain the silver nanoparticle / titanium dioxide nanotube array;
[0039] The solution containing silver ions is obtained by mixing silver salt, ammonia water, polyvinylpyrrolidone and water.
[0040] According to the present invention, the present invention mixes and reacts the solution containing silver ions, the titanium dioxide nanotube array and glucose to obtain the silver nanoparticle / titanium dioxide nanotube array; the mixing reaction is preferably a mixing reaction under ultrasonic conditions; the mixing reaction The temperature is preferably 30-60° C.; the mixing reaction time is 1-20 min, preferably 5-10 min.
[0041] The present invention also includes cleaning and drying the silver nanoparticle / titanium dioxide nanotube array ob...
Embodiment 1
[0053] Ultrasonic cleaning of the pure titanium substrate with acetone and absolute ethanol for 20 min. Take the platinum sheet electrode as the cathode, insert it into the electrolyte solution containing 98v% ethylene glycol (ammonium fluoride 0.3wt%) and 2v% water at the same time, apply a voltage of 50V for anodizing for 2h, and after peeling off the film layer, apply a voltage of 50V for anodizing for 10min , making TiO 2 nanotube arrays, and then the TiO 2 The nanotube array was inserted into an ethylene glycol solution containing 5wt% phosphoric acid, anodized at 50V for 5min, and then calcined at 450°C for 2h to transform it from an amorphous state to anatase to obtain a titania nanotube array;
[0054] The obtained titanium dioxide nanotube array is detected, and the results are shown in figure 2 , figure 2 It is the SEM image of the titanium dioxide nanotube array prepared in Example 1 of the present invention, wherein, Figure a is a front view, and Figure b is a...
Embodiment 2
[0067] Ultrasonic cleaning of the pure titanium substrate with acetone and absolute ethanol for 20 min. Using the platinum sheet electrode as the cathode, insert it into the electrolyte solution containing 97v% ethylene glycol (ammonium fluoride 0.4wt%) and 3v% water at the same time, apply a voltage of 60V for anodic oxidation for 1.5h, after peeling off the film layer, apply a voltage of 60V for anodic oxidation 2min, made TiO 2 nanotube arrays, and then the TiO 2 The nanotube array was inserted into an ethylene glycol solution containing 3wt% phosphoric acid, anodized by applying a voltage of 60V for 5min, and then calcined at 400°C for 2h to transform it from an amorphous state to anatase to obtain a titania nanotube array.
[0068] Prepare 50ml of 5mMAgNO 3 Aqueous solution, sequentially add 0.05M ammonia solution and 0.6g PVP, after the solution is uniformly dispersed, TiO 2 Nanotube arrays immersed in AgNO 3 In the aqueous solution, heat and sonicate, add 0.1M gluco...
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