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A preparation of pbbio by polyacrylamide gel 2 Methods and applications of br nanomaterials

A technology of polyacrylamide gel and nanomaterials, which is applied in the field of photocatalytic materials, can solve the problems of unsatisfactory catalytic efficiency and complex preparation process of Br catalyst, and achieve high catalytic efficiency and simple operation process

Active Publication Date: 2021-08-24
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve existing PbBiO in the prior art 2 The preparation process of Br catalyst is complex and the catalytic efficiency is not ideal. The present invention aims to provide a method for preparing PbBiO with polyacrylamide gel. 2 The method and application of Br nanomaterials, the method is simple, stable and efficient, and the PbBiO prepared by this method 2 Br nanocatalysts are mainly used in the treatment of organic pollutants in dye wastewater

Method used

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  • A preparation of pbbio by polyacrylamide gel <sub>2</sub> Methods and applications of br nanomaterials
  • A preparation of pbbio by polyacrylamide gel <sub>2</sub> Methods and applications of br nanomaterials
  • A preparation of pbbio by polyacrylamide gel <sub>2</sub> Methods and applications of br nanomaterials

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Experimental program
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Embodiment 1

[0022] A preparation of PbBiO by polyacrylamide gel 2 The method for Br nanometer material, comprises the following steps:

[0023] Step (1): Weigh 0.01mmol of bismuth nitrate and lead nitrate and dissolve in 30mL of nitric acid solution and add 10mL of deionized water at the same time, stir evenly; weigh 0.01mmol of cetyltrimethylammonium bromide and dissolve in 20mL of In deionized water, stir evenly, add cetyltrimethylammonium bromide aqueous solution dropwise to the nitric acid aqueous solution of lead nitrate and bismuth nitrate to obtain mixed solution A;

[0024] Step (2): Adjust the pH of the mixture A to 3.5, heat it to 80°C, keep it warm for 3 hours, add 10g of acrylamide monomer and keep stirring to form gel B.

[0025] Step (3): Gel B was dried in a thermostat at 130°C for 24 hours to obtain dry gel C, which was ground into a fine powder in an agate mortar, and then calcined in a tube furnace at 450°C for 3 hours , and finally PbBiO 2 Br nanomaterials.

[0026]...

Embodiment 2

[0029] Step (1): Weigh 0.01mmol of bismuth nitrate and lead nitrate and dissolve in 30mL of nitric acid solution and add 12.6mL of deionized water at the same time, stir evenly; weigh 0.01mmol of cetyltrimethylammonium bromide and dissolve in 18.2 mL of deionized water, stirred evenly, and added cetyltrimethylammonium bromide aqueous solution dropwise to the nitric acid aqueous solution of lead nitrate and bismuth nitrate to obtain mixed solution A;

[0030] Step (2): Adjust the pH of the mixture A to 3, heat it to 70°C, keep it warm for 5 hours, add 5.5g of acrylamide monomer and keep stirring to form gel B.

[0031] Step (3): Gel B was dried in a thermostat at 110°C for 24 hours to obtain dry gel C, which was ground into a fine powder in an agate mortar, and then calcined in a tube furnace at 500°C for 2 hours , and finally PbBiO 2 Br nanomaterials.

Embodiment 3

[0033]Step (1): Weigh 0.01mmol of bismuth nitrate and lead nitrate and dissolve in 30mL of nitric acid solution and add 10mL of deionized water at the same time, stir evenly; weigh 0.01mmol of cetyltrimethylammonium bromide and dissolve in 20mL of In deionized water, stir evenly, add cetyltrimethylammonium bromide aqueous solution dropwise to the nitric acid aqueous solution of lead nitrate and bismuth nitrate to obtain mixed solution A;

[0034] Step (2): Adjust the pH value of the mixture A to 5, heat it to 100°C, keep it warm for 2 hours, add 3.7g of acrylamide monomer and keep stirring to form gel B.

[0035] Step (3): Gel B was dried in a thermostat at 160°C for 24 hours to obtain dry gel C, which was ground into a fine powder in an agate mortar, and then calcined in a tube furnace at 400°C for 5 hours , and finally PbBiO 2 Br nanomaterials.

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Abstract

The invention belongs to the field of photocatalytic materials, and relates to the preparation of PbBiO by polyacrylamide gel 2 The method for Br nanomaterials comprises the following steps: (1) dissolving lead nitrate and bismuth nitrate in an aqueous solution of nitric acid, adding hexadecyltrimethylammonium bromide solution dropwise after stirring uniformly to obtain a mixed solution A; (2 ) Heating the mixed solution A to 70-100°C, adding acrylamide monomer to the mixed solution A after keeping warm, stirring continuously to form a uniform polyacrylamide gel system B; (3) placing the gel B at 110-160°C After drying in a thermostat, the xerogel C is obtained, and the xerogel C is ground into a fine powder, and then calcined in a tube furnace at 400°C to 500°C and kept warm to obtain PbBiO 2 Br nanomaterials. The method has simple and stable operation process, is beneficial to the separation of electrons and holes, and makes the prepared catalyst have higher catalytic efficiency.

Description

technical field [0001] The invention belongs to the field of photocatalytic materials and relates to a PbBiO 2 The preparation method and application of Br nano material, especially relate to a kind of preparation PbBiO with polyacrylamide gel 2 The method and application of Br nanomaterials are mainly used in the treatment of organic pollutants in dye wastewater. Background technique [0002] In recent years, my country's dye industry has developed rapidly. According to incomplete statistics, my country discharges about 900,000 to 1 million tons of various dye wastewater every day, and dye wastewater has become one of the key sources of environmental pollution. The dye industry has a variety of varieties and complex processes. The wastewater contains a large amount of organic matter, has the characteristics of high CODCr, deep color, strong acidity and alkalinity, and has always been a difficult problem in wastewater treatment. Therefore, the development of new water trea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/135B82Y30/00B82Y40/00C02F1/30C02F101/30
Inventor 夏咏梅胡可军
Owner JIANGSU UNIV OF TECH