Preparation method of MoS2@SrTiO3/rGO composite photocatalyst for degrading dye wastewater
A technology for dye wastewater and catalyst, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, chemical instruments and methods, etc., to achieve good photocatalytic performance and efficient degradation.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0014] Weigh 0.24g (NH 4 ) 6 Mo 7 o 24 4H 2 O and 1.96g CH 4 N 2 Dissolve S in 60mL of water and stir for 1h, then add the above solution into a polytetrafluoroethylene reactor and conduct a hydrothermal reaction at 200°C for 24h, cool to room temperature naturally, take out the prepared sample, centrifuge, wash with water, dry, and collect to obtain MoS 2 catalyst of light. The prepared MoS 2 The photocatalyst degrades 10mg / L Rhodamine B dye wastewater under sunlight irradiation, and the degradation rate is 56% within 2 hours.
Embodiment 2
[0016] Dissolve 1.7mL tetrabutyl titanate in 25mL ethylene glycol solution, stir for 10min, then dissolve 10mL containing 1.33g SrCl 2 ·6H 2 O solution and 5 mL of sodium hydroxide solution with a molar concentration of 5 mol / L were added dropwise to the above solution, stirred at room temperature for 10 min, and the resulting mixed solution was transferred to a polytetrafluoroethylene-lined stainless steel autoclave at 180 ℃ constant temperature hydrothermal reaction for 24 hours, naturally cooled to room temperature, centrifuged the obtained sample in a centrifuge, repeatedly washed with ionized water and ethanol to remove impurity ions, and then dried the sample in a constant temperature drying oven at 60°C until constant Heavy, and finally placed in agate and ground to obtain a white powder product SrTiO 3 . The obtained product SrTiO 3 The degradation rate of 10mg / L rhodamine B dye wastewater was 29% in 2 hours under sunlight irradiation.
Embodiment 3
[0018] 1. Mix 0.24g (NH 4 ) 6 ·Mo 7 o 24 4H 2 O and 1.96g CH 4 N 2 Dissolve S in 60mL water, weigh 0.1g of the above-prepared SrTiO 3 Add it to the above solution, stir continuously for 60min, transfer the resulting mixture to a polytetrafluoroethylene-lined stainless steel autoclave, conduct a hydrothermal reaction at 200°C for 24h, cool naturally to room temperature, and place the obtained sample in a centrifuge to centrifuge , wash with deionized water and ethanol repeatedly to remove impurity ions until the supernatant is transparent, then place the sample in a constant temperature drying oven at 80 ° C to dry to constant weight, and finally obtain the product MoS 2 / SrTiO 3 ;
[0019] 2. Add 0.02g graphene oxide into water and ultrasonically disperse for 1h, then add the MoS prepared above 2 / SrTiO 3 And stirred for 1h, the obtained mixed solution was added to a polytetrafluoroethylene hydrothermal reaction kettle for 3h hydrothermal reaction at 180°C, cooled to...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More