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A method for synthesizing bipo4 micro- and nano-powders in ultrasonic liquid phase

A technology of micron powder and solution, applied in micro/nano material preparation, nano powder, ultrasonic liquid phase synthesis of BiPO4 micro field, to achieve the effect of less by-products, convenient and concise product processing, and easy construction

Active Publication Date: 2015-10-07
安徽中航纳米技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, about the synthesis of BiPO by ultrasonic method 4 There are few reports on micro and nano powders

Method used

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  • A method for synthesizing bipo4 micro- and nano-powders in ultrasonic liquid phase
  • A method for synthesizing bipo4 micro- and nano-powders in ultrasonic liquid phase
  • A method for synthesizing bipo4 micro- and nano-powders in ultrasonic liquid phase

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: Preparation of rice grain BiPO 4 Micron powder

[0025] Take 1mmol Bi(NO 3 ) 3 ·5H 2 O was placed in a 50ml Erlenmeyer flask, and 10ml of tetrahydrofuran and 5ml of absolute ethanol were added, placed on a magnetic stirrer and continuously stirred for 15min to dissolve it. Take 3mmol NaH again 2 PO 4 2H 2 O and 0.1g CTAB were added to the above solution and stirred for 15min. Then take out the stirring bar, place the Erlenmeyer flask in an ultrasonic cleaner, adjust the power to 80%, and carry out ultrasonic treatment for 1 hour. Pour the sonicated solution into a centrifuge tube and wash repeatedly with absolute ethanol and deionized water. After several times, take out the precipitate and place it in a constant temperature drying oven. Set the drying temperature to 80°C for 6 hours, that is, A white product is obtained.

[0026] figure 1 The XRD pattern of the obtained product is given. As shown in the figure, the diffraction peaks at 2θ=19.09...

Embodiment 2

[0027] Example 2: Preparation of spherical BiPO 4 Nano powder

[0028] Take 1mmol Bi(NO 3 ) 3 ·5H 2 O was placed in a 50ml Erlenmeyer flask, and 10ml of tetrahydrofuran and 5ml of absolute ethanol were added, placed on a magnetic stirrer and continuously stirred for 15min to dissolve it. Take 3mmol NaH again 2 PO 4 2H 2 O and 0.1 g PEG were added to the above solution and stirred for 15 min. Then take out the stirring bar, place the Erlenmeyer flask in an ultrasonic cleaner, adjust the power to 80%, and carry out ultrasonic treatment for 60 minutes. Pour the sonicated solution into a centrifuge tube and wash repeatedly with absolute ethanol and deionized water. After several times, take out the precipitate and place it in a constant temperature drying oven. Set the drying temperature to 80°C for 6 hours, that is A white product is obtained.

[0029] Such as Figure 5 As shown in (a) and (b), when PEG is used as a surfactant, the BiPO obtained after ultrasonic reactio...

Embodiment 3

[0030] Example 3: Preparation of fusiform BiPO 4 Micron powder

[0031] Take 1mmol Bi(NO 3 ) 3 ·5H 2 O was placed in a 50ml Erlenmeyer flask, and 15ml of deionized water was added, placed on a magnetic stirrer and continuously stirred for 15min to dissolve it. Take 3mmol NaH again 2 PO 4 2H 2 O was added to the above solution and stirred for 15 min. Then take out the stirring bar, place the Erlenmeyer flask in an ultrasonic cleaner, adjust the power to 80%, and carry out ultrasonic treatment for 60 minutes. Pour the sonicated solution into a centrifuge tube and wash repeatedly with absolute ethanol and deionized water. After several times, take out the precipitate and place it in a constant temperature drying oven. Set the drying temperature to 80°C for 6 hours, that is A white product is obtained.

[0032] Such as Figure 6 As shown in (a) and (b), when 15ml deionized water is used as the solvent, the BiPO obtained after ultrasonic reaction 4 It presents a regular ...

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Abstract

The invention belongs to the fields of micro / nano material preparation technology and ultrasonic synthesis technology, and specifically relates to a method for ultrasonic liquid-phase synthesis of a BiPO4 micro / nano powder. The method comprises the specific steps: taking bismuth nitrate and sodium dihydrogen phosphate as precursors, taking tetrahydrofuran and absolute ethyl alcohol as solvents, adding a proper amount of a surfactant, and stirring and mixing evenly; carrying out ultrasonic treatment of a conical flask containing the mixture at the room temperature for 30-120 min, and then taking out the container; washing, carrying out centrifugal separation, and thus obtaining the required product. The synthesis process is simple, the whole preparation system is easy to construct, and the cost is low; and the obtained product has the advantages of easily controlled morphology and size, high purity, good degree of crystallization and convenient product processing, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the field of micro / nano material preparation technology and ultrasonic synthesis technology, in particular to an ultrasonic liquid phase synthesis of BiPO 4 Micro and nano powder method. Background technique [0002] As a bismuth compound, BiPO 4 It has received increasing attention due to its potential photocatalytic ability to degrade organic dyes in sewage. At present, researchers have synthesized BiPO through different synthetic methods. 4 , the main synthesis methods are solid-state reaction, hydrothermal reaction, polyol-mediated method and ultrasonic irradiation method. Different synthesis methods can obtain BiPO with different appearance shapes or structures 4 , resulting in different applications. For example, Cho et al. by using solid Bi 2 o 3 and (NH 4 ) 2 HPO 4 BiPO was successfully prepared as a reaction precursor 4 . First, the reactants were ball milled and mixed for 24 hours, and then the mixture was...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G29/00B82Y40/00
Inventor 谢劲松田长安司靖宇韩成良张凌云
Owner 安徽中航纳米技术发展有限公司
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