CdS/ZnFe2O4 composite photocatalyst and preparation method thereof
A photocatalyst, znfe2o4 technology, applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of poor adsorption reactant performance and insufficient photoactivity. , to achieve the effect of easy operation, improve photocatalytic performance, and degrade organic pollutants
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Embodiment 1
[0026] The CdS / ZnFe of this embodiment 2 o 4 Composite photocatalyst, wherein x=1:1, concrete preparation steps are as follows:
[0027] a) 5mmol of Cd(CH 3 COO) 2 , dissolve thiourea in 50mL of ethylene glycol, add 1g of PVP-k30, and stir on a magnetic stirrer; stir the above solution until completely dissolved, transfer the mixed solution to an autoclave, heat to 180°C and keep it for 4h; take out Cool naturally, centrifuge, wash and dry the resulting solution to obtain CdS;
[0028] b) Ultrasonic dispersion of 1 mmol CdS into 50 mL of 1 mmol Zn(NO 3 ) 2 , 2mmol Fe(NO 3 ) 3 In the deionized aqueous solution of NaOH, the deionized aqueous solution of NaOH (1mol L -1 ) to adjust the pH to 13, transfer the mixed solution to an autoclave, heat it to 100°C for 6 hours, cool it to room temperature, wash the obtained precipitate and centrifuge and dry it to obtain CdS / ZFO-1:1 powder.
[0029] Its XRD pattern is as figure 1 As shown in the XRD pattern, it can be seen that ...
Embodiment 2
[0031] The CdS / ZnFe of this embodiment 2 o 4 Composite photocatalyst, wherein x=2:1, concrete preparation steps are as follows:
[0032] a) 5mmol of Cd(CH 3 COO) 2 , dissolve thiourea in 50mL of ethylene glycol, add 1g of PVP-k30, and stir on a magnetic stirrer; stir the above solution until completely dissolved, transfer the mixed solution to an autoclave, heat to 180°C and keep it for 4h; take out Cool naturally, centrifuge, wash and dry the resulting solution to obtain CdS;
[0033] b) Ultrasonic dispersion of 1 mmol CdS into 50 mL of 0.5 mmol Zn(NO 3 ) 2 , 1mmol Fe(NO 3 ) 3 In the deionized aqueous solution of NaOH, the deionized aqueous solution of NaOH (1mol L -1 ) to adjust the pH to 13, transfer the mixed solution to an autoclave, heat it to 100°C for 6 hours, cool it to room temperature, wash the obtained precipitate and centrifuge and dry it to obtain CdS / ZFO-2:1 powder.
[0034] Its XRD pattern is as figure 1 As shown in the XRD pattern, it can be seen that ...
Embodiment 3
[0036] The CdS / ZnFe of this embodiment 2 o 4 Composite photocatalyst, wherein x=3:1, concrete preparation steps are as follows:
[0037] a) 5mmol of Cd(CH 3 COO) 2 , dissolve thiourea in 50mL of ethylene glycol, add 1g of PVP-k30, and stir on a magnetic stirrer; stir the above solution until completely dissolved, transfer the mixed solution to an autoclave, heat to 180°C and keep it for 4h; take out Cool naturally, centrifuge, wash and dry the resulting solution to obtain CdS;
[0038] b) Ultrasonic dispersion of 1 mmol CdS into 50 mL of 0.33 mmol Zn(NO 3 ) 2 , 0.66mmol Fe(NO 3 ) 3 In the deionized aqueous solution of NaOH, the deionized aqueous solution of NaOH (1mol L -1 ) to adjust the pH to 13, transfer the mixed solution to an autoclave, heat it to 100°C for 6 hours, then cool it to room temperature, wash and centrifuge the obtained precipitate to obtain CdS / ZFO-3:1 powder.
[0039] Its XRD pattern is as figure 1 As shown in the XRD pattern, it can be seen that ...
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