An in situ synthesis of α-bi 2 o 3 /cubi 2 o 4 Preparation method and application of heterojunction photocatalytic materials
A photocatalytic material and in-situ synthesis technology, applied in the field of photocatalysis, can solve the problems of large interface transmission resistance and poor compatibility, and achieve the effects of simple and feasible preparation method, reduced transmission resistance, and easy availability of raw materials
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Embodiment 1
[0030] (1) Weigh 0.97g Bi(NO 3 ) 3 ·5H 2 O was added to 10mL methanol solution and stirred at room temperature for 1h to obtain Bi 3+ solution; Weigh 0.2416g Cu(NO 3 ) 2 ·3H 2 O was added to 10 mL of deionized water to obtain clear Cu 2+ solution; weigh 1g of 1,3,5-trimesic acid and add it to 15mL of N,N-dimethylformamide solution to obtain clear H 3 BTC solution;
[0031] (2) will clarified Cu 2+ The solution was added dropwise to Bi 3+ solution, stirred at room temperature for 20 minutes to obtain a mixed solution;
[0032] (3) will clarify H 3 Add the BTC solution dropwise to the mixed solution in step (2), stir at room temperature for 1 hour, then transfer to a 50mL polytetrafluoroethylene liner, conduct a hydrothermal reaction at 120°C for 24 hours, and then wash with deionized water and absolute ethanol respectively , and dried at 60°C to obtain the precursor Bi / Cu-BTC;
[0033] (4) Calcinate Bi / Cu-BTC at 400°C in an air atmosphere for 3h at a heating rate of...
Embodiment 2
[0035] (1) Weigh 0.97g Bi(NO 3 ) 3 ·5H 2 O was added to 10mL methanol solution and stirred at room temperature for 1h to obtain Bi 3+ solution; Weigh 0.2416g Cu(NO 3 ) 2 ·3H 2 O was added to 10 mL of deionized water to obtain clear Cu 2+ solution; weigh 1g of 1,3,5-trimesic acid and add it to 15mL of N,N-dimethylformamide solution to obtain clear H 3 BTC solution;
[0036] (2) will clarified Cu 2+ The solution was added dropwise to Bi 3+ solution, stirred at room temperature for 20 minutes to obtain a mixed solution;
[0037] (3) will clarify H 3 Add the BTC solution dropwise to the mixture in the above step (2), stir at room temperature for 2 h, transfer it to a 50 mL polytetrafluoroethylene liner, and conduct a hydrothermal reaction at 120 °C for 24 h, then use deionized water and anhydrous Wash with ethanol and dry at 80°C to obtain the precursor (Bi / Cu-BTC);
[0038] (4) Calcinate Bi / Cu-BTC at 500°C in an air atmosphere for 3h at a heating rate of 2°C / min to ob...
Embodiment 3
[0040] (1) Weigh 0.97g Bi(NO 3 ) 3 ·5H 2 O was added to 10mL methanol solution and stirred at room temperature for 1h to obtain Bi 3+ solution; Weigh 0.2416g Cu(NO 3 ) 2 ·3H 2 O was added to 10 mL of deionized water to obtain clear Cu 2+ solution; weigh 1g of 1,3,5-trimesic acid and add it to 15mL of N,N-dimethylformamide solution to obtain clear H 3 BTC solution;
[0041] (2) will clarified Cu 2+ The solution was added dropwise to Bi 3+ solution, stirred at room temperature for 20 minutes to obtain a mixed solution;
[0042] (3) will clarify H 3 Add the BTC solution dropwise to the mixed solution in the above step (2), stir at room temperature for 1.5h, transfer to a 50mL polytetrafluoroethylene liner, conduct a hydrothermal reaction at 120°C for 24h, and then use deionized water and anhydrous Wash with ethanol and dry at 70°C to obtain the precursor (Bi / Cu-BTC);
[0043] (4) Calcinate Bi / Cu-BTC at 600°C in an air atmosphere for 3h at a heating rate of 2°C / min to ...
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