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Preparation method of bismuth-doped tin oxide photocatalyst capable of efficiently degrading dyestuff and antibiotic wastewater

A technology of antibiotic wastewater and photocatalyst, which is applied in the field of synthesis of composite photocatalytic materials, to achieve the effects of stable performance, wide absorption spectrum range and low cost

Active Publication Date: 2019-01-18
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention combines Bi element with SnO 2 Doping increases the SnO 2 photoresponse range and significantly improved photocatalytic activity, there is no relevant report in this regard

Method used

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  • Preparation method of bismuth-doped tin oxide photocatalyst capable of efficiently degrading dyestuff and antibiotic wastewater
  • Preparation method of bismuth-doped tin oxide photocatalyst capable of efficiently degrading dyestuff and antibiotic wastewater
  • Preparation method of bismuth-doped tin oxide photocatalyst capable of efficiently degrading dyestuff and antibiotic wastewater

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Embodiment

[0015] Bi(NO 3 ) 3 ·5H 2 O (0.5mmol, 1mmol, 2mmol, 3mmol, 4mmol, 5mmol, 6mmol) were respectively dissolved in 15mL dilute nitric acid solution to obtain a transparent and clear solution A, wherein the dilute nitric acid solution was prepared from commercially available concentrated nitric acid and deionized water at a volume ratio of 1:10 Prepared, then 3mmol Na 2 SnO 3 4H 2 O was dissolved in 5mL deionized water to obtain solution B, then solution B was added to solution A under stirring conditions, deionized water was added to make the total volume of the mixed system 30mL, and the mixed system was transferred to 50mL polystyrene after stirring for 30min. In a vinyl fluoride reaction kettle, put it in a constant temperature oven at 180°C to react for 24 hours. After the reaction is completed, it is naturally cooled to room temperature, centrifuged, washed with deionized water and ethanol in turn, and then dried in a constant temperature oven at 60°C for 12 hours to obtai...

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Abstract

The invention discloses a preparation method of a bismuth-doped tin oxide photocatalyst capable of efficiently degrading dyestuff and antibiotic wastewater. The preparation method comprises the following steps: dissolving 0.5 to 6mmol of Bi(NO3)3.5H2O into 15mL of a diluted nitric acid solution to obtain a transparent clarified solution A; then dissolving 3mmol of Na2SnO3.4H2O into 5mL of de-ionized water to obtain a solution B; adding the solution B into the solution A under a stirring condition; supplementing the de-ionized water to enable the total volume of a mixing system to be 30mL; after continually stirring for 30min, transferring the mixing system into a 50mL polytetrafluoroethylene reaction kettle; then putting the polytetrafluoroethylene reaction kettle into a constant-temperature drying oven at 180 DEG C and reacting for 24h; after reaction is finished, naturally cooling to room temperature; centrifuging and separating; washing with de-ionized water and ethanol in sequence;then putting into the constant-temperature drying oven at 60 DEG C and drying for 12h to obtain the bismuth-doped tin oxide photocatalyst. The bismuth-doped tin oxide photocatalyst prepared by the method has the advantages of wide absorption light spectrum range, stable performance, high efficiency, no toxin and low cost and can be used for efficiently degrading organic pollutants which are difficultly biologically degraded.

Description

technical field [0001] The invention belongs to the technical field of synthesis of composite photocatalytic materials, and in particular relates to a preparation method of a bismuth-doped tin oxide photocatalyst capable of efficiently degrading dye and antibiotic wastewater. Background technique [0002] At present, the discharge of dye and antibiotic wastewater is increasing day by day, which has a long degradation cycle in natural water bodies and is biohazardous. Therefore, it is particularly important to adopt appropriate technology for its full degradation. Photocatalytic technology can completely mineralize pollutants into non-toxic and harmless CO under light. 2 and H 2 O, has the advantages of energy saving, high efficiency, and thorough purification, and can be applied to the treatment of refractory wastewater. The key to using photocatalytic technology to treat wastewater is to develop high-efficiency, visible-light active catalysts. SnO 2 Because of its good...

Claims

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Application Information

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IPC IPC(8): B01J23/18B01J37/10C02F1/30C02F101/34C02F101/38
CPCC02F1/30B01J23/002B01J23/18B01J37/10C02F2101/38C02F2101/34C02F2101/308C02F2305/10B01J35/39
Inventor 孙剑辉褚亮亮董淑英禹崇菲吴子胜
Owner HENAN NORMAL UNIV
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