Bismuth yttrate nanorod as well as preparation method and application thereof

A technology of nanorods and bismuth yttrium oxide, which is applied in the field of bismuth yttrium oxide nanorods and its preparation, can solve the problems of poor bismuth yttrium oxide morphology and achieve low cost, short reaction time and good reproducibility

Active Publication Date: 2015-04-08
JIANGSU UNIV
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  • Summary
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The researchers found that it is difficult for yttrium to enter the crystal lattice of bismuth oxide in general reactions, and only bismuth yttrium oxide was synthesized by the solid-phase method, but the high temperature of the solid-phase method has a great influence on the morphology, so the solid-phase method synthesized The morphology of bismuth yttrium oxide is very bad

Method used

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  • Bismuth yttrate nanorod as well as preparation method and application thereof
  • Bismuth yttrate nanorod as well as preparation method and application thereof
  • Bismuth yttrate nanorod as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Weigh bismuth nitrate and yttrium nitrate and dissolve in 10ml, 0.1mol / L -1 In dilute nitric acid, the masses of the bismuth nitrate and yttrium nitrate are 0.2425g and 0.1916g respectively.

[0027] (2) The mixed solution in step 1 was ultrasonically stirred for 1 h to obtain a clear and transparent liquid.

[0028] (3) Transfer the liquid obtained in step 2 to a polytetrafluoroethylene-lined reactor, and 4 ?H 2 O to adjust the pH value to 8; add water to 80% of the reactor volume.

[0029] (4) The reaction kettle in step 3 was kept in the temperature range of 180 oC, and reacted at constant temperature for 48 hours to obtain a precipitate.

[0030] (5) Wash the precipitate obtained in step 4 alternately with water and ethanol, and centrifuge.

[0031] (6) The centrifuged product in step 5 is calcined at a high temperature to remove impurities to obtain pure-phase bismuth yttrium nanorods. The high-temperature calcination temperature is 450°C, the calcination t...

Embodiment 2

[0033] (1) Weigh bismuth nitrate and yttrium nitrate and dissolve in 10ml, 0.1mol / L -1 In dilute nitric acid, the masses of the bismuth nitrate and yttrium nitrate are 0.2425g and 0.1916g respectively.

[0034] (2) The mixed solution in step 1 was ultrasonically stirred for 1 h to obtain a clear and transparent liquid.

[0035] (3) Transfer the liquid obtained in step 2 to a polytetrafluoroethylene-lined reactor, and 4 ?H 2 O to adjust the pH value to 8.5; add water to 80% of the reactor volume.

[0036] (4) Keep the reaction kettle in step 3 in the temperature range of 200 oC, and react at constant temperature for 24 hours to obtain a precipitate.

[0037] (5) Wash the precipitate obtained in step 4 alternately with water and ethanol, and centrifuge.

[0038] (6) The centrifuged product in step 5 is subjected to high-temperature calcination to remove impurities to obtain pure-phase bismuth yttrium nanorods. The high-temperature calcination temperature is 550°C, the calcin...

Embodiment 3

[0040] (1) Weigh bismuth nitrate and yttrium nitrate and dissolve in 10ml, 0.1mol / L -1 In dilute nitric acid, the masses of the bismuth nitrate and yttrium nitrate are 0.2425g and 0.1916g respectively.

[0041] (2) The mixed solution in step 1 was ultrasonically stirred for 1 h to obtain a clear and transparent liquid.

[0042] (3) Transfer the liquid obtained in step 2 to a polytetrafluoroethylene-lined reactor, and 4 ?H 2 O to adjust the pH value to 9; add water to 80% of the reactor volume.

[0043] (4) Keep the reaction kettle in step 3 in the temperature range of 240 oC, and react at constant temperature for 16 hours to obtain a precipitate.

[0044] (5) Wash the precipitate obtained in step 4 alternately with water and ethanol, and centrifuge.

[0045] (6) The centrifuged product in step 5 is calcined at a high temperature to remove impurities to obtain pure-phase bismuth yttrium nanorods. The high-temperature calcination temperature is 650°C, the calcination time is...

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Abstract

The invention belongs to the technical field of nanomaterial synthesis, and particularly relates to a bismuth yttrate nanorod as well as a preparation method and application thereof. The bismuth yttrate nanorod with a uniform morphology is prepared by adopting a hydrothermal synthesis method. According to the technical scheme, the method comprises the following steps: firstly, mixing Bi(NO3)3.5H2O (bismuth nitrate) and Y(NO3)3.6H2O (yttrium nitrate) into nitric acid, stirring evenly, then adjusting the pH value with NH4.H2O, and preparing a bismuth yttrate nanorod precursor solution by virtue of a hydrothermal method; and burning the precursor solution at a high temperature, so as to obtain the bismuth yttrate nanorod. A bismuth yttrate nanorod photocatalyst is synthesized by using a simple hydrothermal synthesis method; the morphology is a two-dimensional nanorod; and the bismuth yttrate nanorod has the advantages of chemical stability, no toxicity and the like as a novel photocatalytic material.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and in particular relates to a bismuth yttrium nanorod and its preparation method and application. The nanorod can be used in the field of visible light degradation of antibiotics. Background technique [0002] Environmental pollution and energy depletion have made solar energy, a green, pollution-free and recyclable energy, a research hotspot in recent years. Most photocatalytic semiconductor materials can degrade organic matter under UV light. Scholars at home and abroad have done a lot of research in order to make photocatalysts more fully utilize the spectrum. Bismuth yttrium oxide has an energy band of 2.14 EV, and it is a photocatalyst that responds to visible light. The researchers found that it is difficult for yttrium to enter the crystal lattice of bismuth oxide in general reactions, and only bismuth yttrium oxide was synthesized by the solid-phase method, but the high t...

Claims

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Application Information

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IPC IPC(8): C01G29/00B01J23/18B82Y30/00B82Y40/00C02F1/30
Inventor 施伟东吴苗苗王超张超蔡凡朋余小强陈超
Owner JIANGSU UNIV
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