Bismuth-based nano heterojunction material as well as preparation method and application thereof
A heterojunction, nanotechnology, applied in nanotechnology, nanotechnology, nanomedicine, etc., can solve problems such as poor tissue penetration, large organ damage, and difficulty in applying clinical treatment.
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[0045] The present invention provides a method for preparing bismuth-based nano-heterojunction materials described in the above technical solution, comprising the following steps:
[0046] The bismuth oxychloride nanoparticle dispersion liquid and the selenosulfate solution are mixed, and hydrothermal reaction is carried out to obtain the bismuth-based nano-heterojunction material.
[0047] In the present invention, the bismuth oxychloride nanoparticles are prepared according to the following method:
[0048] Mixing bismuth salt, transition metal chloride and solvent, solvothermal reaction, and ultraviolet irradiation to obtain bismuth oxychloride nanoparticles;
[0049] The temperature of the solvothermal reaction is 100-180° C.; the time of the solvothermal reaction is 4-18 hours.
[0050] Described bismuth salt is selected from Bi(NO 3 ) 3 、 Bi 2 (SO 4 ) 3 , Bi(NO 3 ) 3 ·5H 2 O, Bi(PO 3 ) 3 、BiH(PO 3 ) 2 、BiH 2 PO 3 and Bi 2 (CO 3 ) 3 at least one of the ...
Embodiment 1
[0095] Example 1 Preparation of black bismuth oxychloride and bismuth selenide nano-heterojunction materials
[0096] (1) Weigh 0.972gBi(NO 3 ) 3 ·5H 2 O in a 50ml beaker, to which 15ml ethylene glycol was added, stirred on a magnetic stirrer until Bi(NO 3 ) 3 Dissolve and disperse evenly to obtain solution a;
[0097] (2) Weigh 0.541gFeCl 3 ·6H 2 O in a 50ml beaker, add 15ml of ultrapure water to it, stir on a magnetic stirrer until FeCl 3 Dissolve and disperse evenly to obtain solution b;
[0098] (3) At room temperature (25°C), all of the above solution b was added dropwise to solution a, and magnetically stirred until the solution became a white suspension to obtain solution c;
[0099] (4) Transfer the c solution into a polytetrafluoroethylene liner, put it into a reactor and seal it, put the reactor into an oven, and react at a constant temperature of 160°C for 12 hours;
[0100] (5) After the reaction is completed, the reaction kettle is cooled to room temperat...
Embodiment 2
[0110] Example 2 Preparation of gray bismuth oxychloride and bismuth selenide nano-heterojunction materials
[0111] (1) Weigh 0.972gBi(NO 3 ) 3 ·5H 2 O in a 50ml beaker, to which 15ml ethylene glycol was added, stirred on a magnetic stirrer until Bi(NO 3 ) 3 Dissolve and disperse evenly to obtain solution a;
[0112] (2) Weigh 0.541gFeCl 3 ·6H 2 O in a 50ml beaker, add 15ml of ultrapure water to it, stir on a magnetic stirrer until FeCl 3 Dissolve and disperse evenly to obtain solution b;
[0113] (3) At room temperature (25°C), all of the above solution b was added dropwise to solution a, and magnetically stirred until the solution became a white suspension to obtain solution c;
[0114] (4) Transfer the c solution into a polytetrafluoroethylene liner, put it into a reactor and seal it, put the reactor into an oven, and react at a constant temperature of 160°C for 12 hours;
[0115] (5) After the reaction is completed, the reaction kettle is cooled to room temperatu...
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