Nano tin sulfide-based photocatalyst as well as preparation method and application thereof
A technology of tin sulfide and catalyst, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of increasing nanoparticle size, reducing photocatalytic activity, and difficulty in uniform oxidation, etc., to achieve efficient degradation The effect of performance, high light stability
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[0035] SNS 2 The preparation method of the powder includes, but is not limited to the solid phase reaction method, the hydrothermal method, solvent thermal method, and the common precipitation method, and the like. As an example of solid phase reaction, tin powder and sulfur powder are solidified to give SNS. 2 powder. The tin source can be tin powder, and the sulfur source can be sulfur powder. The SN source and the S source are preferably a Sn-powder Sn powder and a purity of 4N having a purity of 4 N. As a detailed, SNS is synthesized using a solid phase reaction method. 2 Powder preparation example: Sn source and S source according to the molar ratio (1: 2) ingredient, uniformly ground, sealed in quartz tube, temperature above 550 ~ 650 ° C temperature, slow solid phase reactions 10 ~ 24 hours, natural cooling, get SNS 2 Powder.
[0036] Solid phase SNS with high energy ball mill 2 Powder and oxidants perform high energy ball mills, select suitable ball mills, to obtain sulfur...
Embodiment 1
[0041] This Example 1 Preparation with sulfur empty and in-plane SNS as follows 2 / SNO 2 Heterogeneous nano SNS 2 Base light catalyst:
[0042] (A) Weigh 6.4925 g of SN powder, 3.5074 g of S powder, uniform grinding, dry press table, sealed in the quartz pipe, then the sealed quartz pipe is slowly solidified in the muffle, solid phase reaction The system was: heated at a temperature rise rate of 1 ° C / min to a solid phase reaction at 600 ° C, and the solid phase reaction time was 16 hours; natural cooling was naturally cooled after the reaction was completed;
[0043] (B) Weigh the SNS obtained by the above solid phase 2 The powder is 8 g, and two ball grinders (4 g) of a high energy ball mill is evenly added, and each tank is placed in a zirconia ball mill 60g, and 10 ml of anhydrous ethanol is added as a ball mill, and 200 ml of air is injected as an oxidant. The ball mill is 600RAD / min, the ball mill is 180 min, the ball mill is filtered, and the filtration is dried at 60 ...
Embodiment 2
[0053] (A) Weigh 6.4925 g of SN powder, 3.5074 g of S powder, uniform grinding, dry press table, sealed in the quartz pipe, then the sealed quartz pipe is slowly solidified in the muffle, solid phase reaction The system was: heated at a temperature rise rate of 1 ° C / min to a solid phase reaction in 620 ° C, and the solid phase reaction time was 12 hours; naturally cooled naturally after the reaction was completed, and the sample was taken out;
[0054] (B) Weigh the SNS obtained by the above solid phase 2 The powder is 8 g, and two ball grinders (4 g) of a high energy ball mill is evenly added, and each can be placed in a zirconia ball mill 60g, and 11 ml of anhydrous ethanol is added as a ball mill, and 200 ml of air is injected as an oxidant. The ball mill is 800RAD / min, the ball mill is 180 min, the ball mill is filtered, and the filtration is filtered at 60 ° C, that is, the sulfur empty and in the face SNS is obtained. 2 / SNO 2 Heterogeneous nano SNS 2 Base light cataly...
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