Preparation method of paper-based bismuth ferrite composite material with heterogeneous adsorption and catalytic function

Abstract

The invention provides a method for preparing paper based bismuth ferrite composite material with a multiphase adsorption catalysis function. The method comprises the following steps: 1, preparing bismuth ferrite (BiFeO3) nano-particles by adopting a hydrothermal method or a sold-gel method; 2, preparing plant fiber suspension; and 3, preparing the bismuth ferrite (BiFeO3) paper-based composite material by adopting the hydrothermal method or the sold-gel method. According to the method disclosed by the invention, an interweave layer of plant fibers serves as a carrier, the bismuth ferrite nano-particles are uniformly dispersed and supported on the carrier, and agglomeration of the bismuth ferrite nano-particles can be avoided, so that the adsorption and catalysis activity is ensured; the used plant fibers belong to porous materials and have super-strong adsorption properties, and an excellent catalytic degradation effect is inevitably achieved by super-strong adsorption; moreover, by utilizing the super-strong and catalytic performance of the catalyst, the high-efficiency degradation and mineralization of organic pollutants can be realized.

Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a preparation method of a paper-based bismuth ferrite composite material with multiphase adsorption and catalytic functions. Background technique

[0002] my country is a country that lacks water resources, and the pollution of water resources is relatively serious, which makes water resources face a more severe situation. In the wastewater discharged by industrial enterprises, the existence of persistent organic pollutants has a great impact on the water environment. Therefore, it is an urgent task to carry out advanced treatment of organic pollutants in industrial wastewater to achieve discharge standards and even reuse.

[0003] Traditional organic pollutant removal technologies include physical methods, microbial and enzyme treatment technologies, etc. Physical methods mainly use filtration, adsorption and other means to separate pollutants from water bodies and tra...

Examples

Embodiment 1

[0037] Bismuth ferrite (BiFeO) was prepared by hydrothermal method 3 ) paper-based composites

[0038] 1. Preparation of bismuth ferrite (BiFeO 3 ) nanoparticles

[0039] First measure 30-50mL of distilled water and place it in a container, add 10-15mL of nitric acid (68% by mass) to dilute; then weigh 0.005-0.006mol of bismuth nitrate and 0.005-0.006mol of ferric nitrate and pour them into the diluted nitric acid Stir and dissolve to prepare a mixed solution; then use a container to weigh 33-40g of potassium hydroxide and add water to dissolve, transfer to a 50mL volumetric flask to constant volume; then add the prepared potassium hydroxide (KOH) solution to the above mixed solution, Stir continuously to form a brown precipitate; then filter the solution with a conical funnel to obtain a brown precipitate, and wash it with distilled water 5-8 times; then add the precipitate to 40-45mL potassium hydroxide (KOH) solution and stir evenly; the obtained suspension Pour the solu...

Embodiment 2

[0049] Bismuth ferrite (BiFeO) was prepared by sol-gel method 3 ) paper-based composites

[0050] 1. Bismuth ferrite (BiFeO) was prepared by sol-gel method 3 ) nanoparticles

[0051] First, dissolve 0.005-0.006mol of ferric nitrate and 0.005-0.006mol of bismuth nitrate in 20-30mL of ethylene glycol methyl ether, then add 20-25μL of 0.1mol / L nitric acid solution, and then add 0.008-0.01mol of Citric acid and 10-15 mL of ethylene glycol, and the resulting mixture was stirred at 60-70° C. for 1-2 hours to form a sol. Heat the sol at 100-120°C for 5-6h to form a brown gel, then place it on an electric furnace and heat it at 100-120°C for 30-40 minutes, and calcinate it in a muffle furnace at 500-600°C After 2-3 hours, after cooling to room temperature, the obtained product is ground for later use.

[0052] 2. Preparation of plant fiber suspension

[0053] First, weigh 300-400g coniferous wood pulp board, soak it in 8-10L water for 30-40min, and tear it into small pieces of 3c...

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a preparation method of a paper-based bismuth ferrite composite material with multiphase adsorption and catalytic functions. Background technique

[0002] my country is a country that lacks water resources, and the pollution of water resources is relatively serious, which makes water resources face a more severe situation. In the wastewater discharged by industrial enterprises, the existence of persistent organic pollutants has a great impact on the water environment. Therefore, it is an urgent task to carry out advanced treatment of organic pollutants in industrial wastewater to achieve discharge standards and even reuse.

[0003] Traditional organic pollutant removal technologies include physical methods, microbial and enzyme treatment technologies, etc. Physical methods mainly use filtration, adsorption and other means to separate pollutants from water bodies and tra...

Examples

Embodiment 1

[0037] Bismuth ferrite (BiFeO) was prepared by hydrothermal method 3 ) paper-based composites

[0038] 1. Preparation of bismuth ferrite (BiFeO 3 ) nanoparticles

[0039] First measure 30-50mL of distilled water and place it in a container, add 10-15mL of nitric acid (68% by mass) to dilute; then weigh 0.005-0.006mol of bismuth nitrate and 0.005-0.006mol of ferric nitrate and pour them into the diluted nitric acid Stir and dissolve to prepare a mixed solution; then use a container to weigh 33-40g of potassium hydroxide and add water to dissolve, transfer to a 50mL volumetric flask to constant volume; then add the prepared potassium hydroxide (KOH) solution to the above mixed solution, Stir continuously to form a brown precipitate; then filter the solution with a conical funnel to obtain a brown precipitate, and wash it with distilled water 5-8 times; then add the precipitate to 40-45mL potassium hydroxide (KOH) solution and stir evenly; the obtained suspension Pour the solu...

Embodiment 2

[0049] Bismuth ferrite (BiFeO) was prepared by sol-gel method 3 ) paper-based composites

[0050] 1. Bismuth ferrite (BiFeO) was prepared by sol-gel method 3 ) nanoparticles

[0051] First, dissolve 0.005-0.006mol of ferric nitrate and 0.005-0.006mol of bismuth nitrate in 20-30mL of ethylene glycol methyl ether, then add 20-25μL of 0.1mol / L nitric acid solution, and then add 0.008-0.01mol of Citric acid and 10-15 mL of ethylene glycol, and the resulting mixture was stirred at 60-70° C. for 1-2 hours to form a sol. Heat the sol at 100-120°C for 5-6h to form a brown gel, then place it on an electric furnace and heat it at 100-120°C for 30-40 minutes, and calcinate it in a muffle furnace at 500-600°C After 2-3 hours, after cooling to room temperature, the obtained product is ground for later use.

[0052] 2. Preparation of plant fiber suspension

[0053] First, weigh 300-400g coniferous wood pulp board, soak it in 8-10L water for 30-40min, and tear it into small pieces of 3c...

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