Preparation method of ZnO-BiOI composite microspheres suitable for industrial production
A technology of composite microspheres and -bi, applied in chemical instruments and methods, chemical/physical processes, water treatment of special compounds, etc., can solve the problems of harsh reaction conditions, cumbersome preparation process, and lack of alternative processes, and achieve short reaction time , raw materials are cheap and easy to obtain, and the process method is simple
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[0027] see figure 1 A method for preparing ZnO-BiOI composite microspheres suitable for industrial production provided by the embodiments of the present invention comprises the following steps:
[0028] Suspend the pretreated nano-ZnO in ethylene glycol to form a mixed system of ZnO and ethylene glycol with a concentration of 2.3-3.1g / L;
[0029] Take Bi(NO 3 ) 3 ·5H 2 O is dispersed in ethylene glycol to form Bi(NO 3 ) 3 ·5H 2 O mixed system with ethylene glycol;
[0030] Dissolve KI in ethylene glycol to form a KI solution, and make KI and Bi(NO 3 ) 3·5H 2 The molar ratio of O is 1~1.5;
[0031] Bi(NO 3 ) 3 ·5H 2 Pour the mixed system of O and ethylene glycol into the mixed system of ZnO and ethylene glycol and stir mechanically for 5-10 minutes to form ZnO(Bi 3+ )-Bi(NO 3 ) 3 ·5H 2 O mixed system with ethylene glycol;
[0032] Add KI solution dropwise to ZnO(Bi 3+ )-Bi(NO 3 ) 3 ·5H 2 After O and ethylene glycol are mixed in the system, add glacial acet...
Embodiment 1
[0041] A: Selection and treatment of ZnO
[0042] (1) Select ZnO with a purity of more than 99.9% and a particle size of 180-200 mesh as the initial raw material, which is recorded as Material-ZnO;
[0043] (2) Take an appropriate amount of Material-ZnO and place it in a crucible, treat it in a muffle furnace at 900°C for 10 minutes, then take it out and cool it to room temperature, and the obtained product is designated as Prepared-ZnO.
[0044] B: Preparation of ZnO-BiOI composite microspheres
[0045] (1) Weigh 0.243g of Prepared-ZnO and ultrasonically suspend it in 90mL of ethylene glycol to form a mixed system A.
[0046] (2) Weigh 8.1g Bi(NO 3 ) 3 ·5H 2 O (that is, ZnO and Bi(NO 3 ) 3 ·5H 2 The mass ratio of O is 3:100) and it is uniformly dispersed in 90mL of ethylene glycol to form the mixed system B.
[0047] (3) Weigh 2.77gKI (the iodine element in the taken KI and the taken Bi(NO 3 ) 3 ·5H 2 The molar ratio of the bismuth element in O is 1:1) and dissolve...
Embodiment 2
[0053] A: Selection and treatment of ZnO
[0054] (1) Select ZnO with a purity of more than 99.9% and a particle size of 180-200 mesh as the initial raw material, which is recorded as Material-ZnO;
[0055] (2) Take an appropriate amount of Material-ZnO and place it in a crucible, treat it in a muffle furnace at 1000°C for 8 minutes, then take it out and cool it to room temperature, and the obtained product is designated as Prepared-ZnO.
[0056] B: Preparation of ZnO-BiOI composite microspheres
[0057] (1) Weigh 0.243g of Prepared-ZnO and ultrasonically suspend it in 80mL of ethylene glycol to form a mixed system A.
[0058] (2) Weigh 1.62gBi(NO 3 ) 3 ·5H 2 O (that is, ZnO and Bi(NO 3 ) 3 ·5H 2 The mass ratio of O is 15:100) and it is uniformly dispersed in 80mL of ethylene glycol to form the mixed system B.
[0059] (3) Weigh 0.55gKI (the iodine element in the taken KI and the taken Bi(NO 3 ) 3 ·5H 2 The molar ratio of bismuth element in O is 1:1) and dissolved i...
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