Preparation method and application of hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst

A 2SO4 and photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, inorganic chemistry, etc., can solve the problems that the catalytic performance cannot meet the requirements, etc., and achieve easy batch preparation, cheap and easy-to-obtain raw materials, and novel appearance Effect

Inactive Publication Date: 2014-05-14
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, existing photocatalysts such as TiO 2 ,

Method used

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  • Preparation method and application of hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst
  • Preparation method and application of hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst
  • Preparation method and application of hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst

Examples

Experimental program
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Effect test

Example Embodiment

[0021] Example 1

[0022] Add 30 mL of water to the beaker, add 1 mmol of bismuth nitrate pentahydrate under stirring, and stir for 30 min; then add 0.9 mmol of anhydrous sodium sulfite, stir for 1 h, and transfer to a 50 mL autoclave. The autoclave was sealed, kept at 110°C for 24 hours, and cooled to room temperature. Centrifuge the solution in the autoclave to collect the precipitate and dry it at 50°C for 6 hours to obtain material 1. X-ray electron diffraction image from material 1 ( image 3 ), it can be seen that material 1 is pure Bi 2 O(OH) 2 SO 4 . From the electron micrograph of material 1 ( figure 1 with figure 2 ), it can be seen that the material 1 has a novel morphology, a hexagonal hollow tube.

Example Embodiment

[0023] Example 2

[0024] Add 30 mL of water to the beaker, add 1.5 mmol of bismuth nitrate pentahydrate under stirring, and stir for 30 min; then add 1 mmol of anhydrous sodium sulfite, stir for 1 h, and transfer to a 50 mL autoclave. The autoclave was sealed, kept at 150°C for 18 hours, and cooled to room temperature. Centrifuge the solution in the autoclave to collect the precipitate and dry it at 60°C for 5 hours to obtain material 2. From the X-ray electron diffraction image of material 2, it can be seen that material 2 is pure phase Bi 2 O(OH) 2 SO 4 . From the electron micrograph of material 2, it can be seen that material 2 has a novel morphology, which is a hexagonal hollow tube.

[0025]

Example Embodiment

[0026] Example 3

[0027] Add 30 mL of water to the beaker, add 2 mmol of bismuth nitrate pentahydrate under stirring, and stir for 30 min; then add 1 mmol of anhydrous sodium sulfate, stir for 1 h, and transfer to a 50 mL autoclave. The autoclave was sealed, kept at 180°C for 12 hours, and cooled to room temperature. Centrifuge the solution in the autoclave to collect the precipitate and dry it at 70° C. for 3 hours to obtain material 3. From the X-ray electron diffraction image of material 3, it can be seen that material 3 is pure Bi 2 O(OH) 2 SO 4 . From the electron micrograph of material 3, it can be seen that material 3 has a novel morphology, which is a hexagonal hollow tube.

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Abstract

The invention provides a preparation method and application of a hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst and relates to the field of novel catalysts. The preparation method comprises the following steps of dissolving bismuth nitrate pentahydrate and a sulfocompound in water to obtain a mixed solution; placing the mixed solution into a high-pressure reactor kettle, performing sealing at the temperature of 110-180 DEG C for 12-24 hours and performing cooling the solution to be at the room temperature; performing centrifugal precipitation and drying on the solution in the high-pressure reactor kettle to obtain the hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst. The preparation method of the hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst is simple and easy to perform, and the hexagonal hollow tubular Bi2O(OH)2SO4 photocatalyst can be prepared in a batch mode and is novel in appearance, in a shape of a hexagonal hollow tube, high in catalytic activity and capable of being applied to degradation of catalyzed organic pollutant substance.

Description

technical field [0001] The invention relates to the field of novel catalysts, in particular to hexagonal hollow tubular Bi 2 O(OH) 2 SO 4 Photocatalysts and their applications. Background technique [0002] The global environmental and energy crisis has prompted scientists all over the world to focus on the research of solar energy conversion and utilization. The research on photocatalysts began in the 1970s with Professor Fujishima and Honda at the University of Tokyo, Japan, who discovered that TiO 2 The single crystal electrode can not only split water but also decompose other harmful pollutants under light. Since then, research on photocatalytic materials and technologies has become popular. [0003] Compared with other technologies, photocatalytic technology has the following advantages: 1) complete degradation, no secondary pollution; 2) easy recycling of catalysts; 3) use of infinite solar energy as energy, low energy consumption; 4) fast reaction rate, no tradit...

Claims

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Application Information

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IPC IPC(8): C01G29/00B01J27/053B01J35/02C02F1/30
CPCY02W10/37
Inventor 滕飞田浩王莉莉孙鹏陈敏东
Owner NANJING UNIV OF INFORMATION SCI & TECH
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