Bismuth phosphate nano crystal cluster as well as preparation method and application thereof

A bismuth phosphate nanometer and crystal cluster technology, applied in the field of material science, can solve the problems of not commonly used chemical reagents, reduced pressure and high temperature environment, short reaction time, etc., and achieve the effect of simple and easy control, mild reaction conditions and fast reaction speed.

Inactive Publication Date: 2015-04-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method (1) prepares bulk BiPO with laser and nonlinear optical properties. 4 Crystal, not suitable for use as photocatalyst material; the reaction precursor of method (2) is Bi[Se 2 P(OiPr) 2 ] 3 , is not a commonly used chemical reagent, and the reaction requires a reduced pressure and high temperature environment in a vacuum furnace; although method (3) has the advantages of low reaction temperature and short reaction time, it can only prepare BiPO with a hexagonal phase structure. 4
[0003] So far, no literature or patent has reported the method of preparing bismuth phosphate nanoclusters with monoclinic phase monazite and hexagonal phase mixed crystal structure by microwave hydrothermal method

Method used

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  • Bismuth phosphate nano crystal cluster as well as preparation method and application thereof
  • Bismuth phosphate nano crystal cluster as well as preparation method and application thereof
  • Bismuth phosphate nano crystal cluster as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0029] Step 1: Add 0.003mol Bi(NO 3 ) 3 ·5H 2 O and 0.003mol Na 3 PO 4 12H 2 O was dissolved in 50ml deionized water and mixed evenly to obtain a precursor solution; in the precursor solution Bi(NO 3 ) 3 ·5H 2 O and Na 3 PO 4 12H 2 The concentration of O is 0.06mol / L;

[0030] Step 2: Put the precursor liquid into the microwave hydrothermal reaction kettle lined with polytetrafluoroethylene, control the filling ratio of the microwave hydrothermal reaction kettle to 50%, seal the microwave hydrothermal reaction kettle; put the microwave hydrothermal reaction kettle Put it into the microwave hydrothermal reaction instrument, select the microwave digestion (temperature control) scheme, set the microwave power to 300W, raise the temperature from room temperature to 100°C, and keep it at 100°C for 8 minutes; then raise the temperature from 100°C to 150°C, Keep warm for 8 minutes; then raise the temperature from 150°C to 160°C, and stop the reaction after holding at 160°C...

Embodiment 2

[0033] Step 1: Add 0.003mol Bi(NO 3 ) 3 ·5H 2 O and 0.003mol Na 3 PO 4 12H 2 O was dissolved in 50ml deionized water and mixed evenly to obtain a precursor solution; in the precursor solution Bi(NO 3 ) 3 ·5H 2 O and Na 3 PO 4 12H 2 The concentration of O is 0.06mol / L;

[0034]Step 2: Put the precursor liquid into the microwave hydrothermal reaction kettle lined with polytetrafluoroethylene, control the filling ratio of the microwave hydrothermal reaction kettle to 50%, seal the microwave hydrothermal reaction kettle; put the microwave hydrothermal reaction kettle Put it into the microwave hydrothermal reaction instrument, select the microwave digestion (temperature control) scheme, set the microwave power to 300W, raise the temperature from room temperature to 100°C, and keep it at 100°C for 8 minutes; then raise the temperature from 100°C to 150°C, Keep warm for 8 minutes; then raise the temperature from 150°C to 180°C, and stop the reaction after holding at 180°C ...

Embodiment 3

[0037] Step 1: Add 0.003mol Bi(NO 3 ) 3 ·5H 2 O and 0.003mol Na 3 PO 4 12H 2 O was dissolved in 50ml deionized water and mixed evenly to obtain a precursor solution; in the precursor solution Bi(NO 3 ) 3 ·5H 2 O and Na 3 PO 4 12H 2 The concentration of O is 0.06mol / L;

[0038] Step 2: Put the precursor liquid into the microwave hydrothermal reaction kettle lined with polytetrafluoroethylene, control the filling ratio of the microwave hydrothermal reaction kettle to 50%, seal the microwave hydrothermal reaction kettle; put the microwave hydrothermal reaction kettle Put it into the microwave hydrothermal reaction instrument, select the microwave digestion (temperature control) scheme, set the microwave power to 300W, raise the temperature from room temperature to 100°C, and keep it at 100°C for 8 minutes; then raise the temperature from 100°C to 150°C, Keep warm for 8 minutes; then raise the temperature from 150°C to 200°C, and stop the reaction after holding at 200°C...

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Abstract

The invention provides a bismuth phosphate nano crystal cluster as well as a preparation method and an application thereof. The method comprises the following steps: dissolving bismuth nitrate pentahydrate and wodium phorhoate tribaric dodecahydrate into water according to the molar ratio of Bi to P of 1:1, so as to obtain a precursor solution; pouring the precursor solution into a microwave hydrothermal reaction kettle; putting the microwave hydrothermal reaction kettle into a microwave hydrothermal reaction instrument; and preparing the bismuth phosphate nano crystal cluster by adopting a microwave hydrothermal process. The preparation method provided by the invention integrates the unique heating characteristics of the microwave and the advantages of the hydrothermal process as an environment-friendly rapid synthesis process; the preparation method is simple in process, easy to control, and short in preparation cycle; energy sources are saved; the obtained bismuth phosphate nano crystal cluster is in a structure of monoclinic phase monazite and hexagonal phase mixed crystal; the particle size distribution is uniform; and the bismuth phosphate nano crystal cluster has a good photocatalytic effect under ultraviolet irradiation, can be applied to degradation of environmental pollutants, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of material science, and in particular relates to a bismuth phosphate nanocrystal cluster and a preparation method and application thereof. Background technique [0002] Due to its advantages in environmental governance and new energy development, semiconductor photocatalysis has become one of the frontier topics that has attracted widespread attention in recent years. The most widely studied photocatalytic material is TiO 2 . But with TiO 2 The photocatalysts based on photocatalysts have high photogenerated electron-hole recombination rate, narrow absorption spectrum and other restrictive factors, and no breakthrough has been made in their modification. At present, the search for new and efficient composite oxide photocatalysts has attracted some attention. Among them, as a new type of photocatalyst, non-metallic oxo acid salts have the advantages of stable structure, good crystallinity, low electron-hole recombi...

Claims

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Application Information

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IPC IPC(8): B01J27/186C01B25/37B82Y20/00B82Y40/00A62D3/17A62D101/26A62D101/28
Inventor 谈国强折辽娜任慧君夏傲
Owner SHAANXI UNIV OF SCI & TECH
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