Efficient composite photocatalyst α-fe in response to visible light 2 o 3 /in 2 the s 3 preparation method
A technology of -fe2o3 and composite light, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as poor separation, low conduction band position, and low photocatalytic activity
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Embodiment 1
[0030] High-efficiency composite photocatalyst α-Fe responsive to visible light of the present invention 2 o 3 / In 2 S 3 The preparation method comprises the steps of: weighing 0.003mol α-Fe prepared by hydrothermal method 2 o 3 Nanoparticles, drop 10mL molar concentration of indium nitrate solution (wherein, n(α-Fe 2 o 3 ): n(In(NO 3 ) 3 ·5H 2 (2)=9:2), ultrasonic 15min disperses evenly, then slowly drips 20mL molar concentration under stirring and is the sodium sulfide solution of 0.083mol / L (wherein, n(In(NO 3 ) 3 ·5H 2 O): n(Na 2 S)=1:2.5) into the above suspension, the pH value of the solid suspension was maintained at 3, and then it was transferred to an autoclave and placed in an oven at 180°C for aging for 24h. The obtained solid phase was washed with water until neutral, dried at 60°C for 5 hours, and ground for later use to obtain α-Fe 2 o 3 / In 2 S 3 composite photocatalyst.
[0031] Among them, α-Fe 2 o 3 The preparation method of nanoparticle co...
Embodiment 2
[0033] High-efficiency composite photocatalyst α-Fe responsive to visible light of the present invention 2 o 3 / In 2 S 3 The preparation method comprises the steps of: weighing 0.0032mol α-Fe prepared by hydrothermal method 2 o 3 Nanoparticles, drop 5mL molar concentration of 0.0067mol / L indium nitrate solution (wherein, n(α-Fe 2 o 3 ): n(In(NO 3 ) 3 ·5H 2 (2)=19:2), ultrasonic 15min disperses evenly, then slowly drips 20mL of sodium sulfide solution (wherein, n(In(NO 3 ) 3 ·5H 2 O):n(Na 2 S)=1:2.5) into the above suspension, the pH value of the solid suspension was maintained at 3, and then it was transferred to an autoclave and placed in an oven at 180°C for aging for 24 hours. The obtained solid phase was washed with water until neutral, dried at 60°C for 5 hours, and ground for later use to obtain α-Fe 2 o 3 / In 2 S 3 composite photocatalyst.
[0034] Among them, α-Fe 2 o 3 The preparation method of nanoparticle comprises the steps: get 16.16g Fe(NO 3 )...
Embodiment 3
[0036] High-efficiency composite photocatalyst α-Fe responsive to visible light of the present invention 2 o 3 / In 2 S 3 The preparation method comprises the steps of: weighing 0.0028mol α-Fe prepared by hydrothermal method 2 o 3 Nanoparticles, drop 15mL molar concentration of 0.0067mol / L indium nitrate solution (wherein, n(α-Fe 2 o 3 ):n(In(NO 3 ) 3 ·5H 2 (2)=17:6), ultrasonic 15min disperses evenly, then slowly drips 20mL molar concentration of 0.125mol / L sodium sulfide solution under stirring (wherein, n(In(NO 3 ) 3 ·5H 2 O):n(Na 2 S)=1:2.5) into the above suspension, the pH value of the solid suspension was maintained at 3, and then it was transferred to an autoclave and placed in an oven at 180°C for aging for 24 hours. The obtained solid phase was washed with water until neutral, dried at 60°C for 5 hours, and ground for later use to obtain α-Fe 2 o 3 / In 2 S 3 composite photocatalyst.
[0037] Among them, α-Fe 2 o 3 The preparation method of nanoparti...
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