Borate-based rare earth ion doping visible-ultraviolet up-conversion luminescent material and preparation method and application thereof

A technology of rare earth ions and luminescent materials, applied in luminescent materials, botanical equipment and methods, applications, etc., can solve the problems of inability to kill large-area bacteria, small laser excitation area, hidden dangers of operation and use, and achieve sterilization Or the effect of inhibiting bacterial growth, low price, and reducing sterilization costs

Active Publication Date: 2017-03-15
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the publication number CN1977999A provides a method for selectively killing cells with ultraviolet up-conversion luminescent nanoparticles. The method uses a 798nm laser as an excitation source, and the laser energy density is high, which is conducive to up-conversion emission; but it brings The problem is that the excitation area of ​​the laser is small and cannot kill bacteria in a large area, and the higher power laser will also bring safety hazards to operation and use

Method used

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  • Borate-based rare earth ion doping visible-ultraviolet up-conversion luminescent material and preparation method and application thereof
  • Borate-based rare earth ion doping visible-ultraviolet up-conversion luminescent material and preparation method and application thereof
  • Borate-based rare earth ion doping visible-ultraviolet up-conversion luminescent material and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Weigh magnesium oxide, praseodymium oxide and boric acid according to the molar ratio of each element magnesium: praseodymium: boron = 0.99:0.01:2.05, mix and grind to powder, burn at 1000°C for 2 hours after crushing, cool down to room temperature, take out, grind, The powdered magnesium borate-based rare earth visible-ultraviolet up-conversion luminescent material is obtained.

Embodiment 2

[0036]According to the molar ratio of each element magnesium: praseodymium: lithium: boron = 0.9:0.01:0.09:2.05 Weigh magnesium oxide, praseodymium oxide, lithium carbonate and boric acid, mix and grind to powder, after crushing, burn at 1000°C for 2h, drop to room temperature, taken out, and ground to obtain a powdery magnesium borate-based rare earth visible-ultraviolet up-conversion luminescent material.

Embodiment 3

[0038] Weigh magnesium oxide, yttrium oxide, praseodymium oxide and boric acid according to the molar ratio of each element magnesium: yttrium: praseodymium: boron = 1:0.99:0.01:2.05, mix and grind to powder, then burn at 1200°C for 1 hour after crushing to room temperature, taken out, and ground to obtain a powdery yttrium-magnesium borate-based rare earth visible-ultraviolet up-conversion luminescent material.

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Abstract

The invention discloses a borate-based rare earth ion doping visible-ultraviolet up-conversion luminescent material. The borate is used as a matrix, and the matrix is doped with Pr<3+>or Pr<3+> and Li<+>; calculating in molar ratio, borate:Pr<3>+:Li<+>=0.9-2.05:0.01-0.1:0-0.09; and the borate is alkaline earth borate, transition metal borate, and alkaline earth borate containing metal yttrium. At the same time, the invention further provides a preparation method for the material. The preparation method comprises the following steps: (a) according to the chemical composition, weighing the oxide raw material of corresponding element and boric acid according to the stoichiometric proportion; (b) after grinding and smashing the weighed material, firing, cooling to the room temperature, grinding to obtain the luminescent material. The experiment shows that the material can emit the ultraviolet-c (UVC) capable of effectively killing bacteria under the excitation of normal light sources (such as a filament lamp, a xenon lamp, a fluorescent lamp and an LED lamp), particularly sunlight. The material has better application prospect in the fields, such as the food safety and environment protection.

Description

technical field [0001] The invention relates to a bactericidal material and its preparation method and application, in particular to a borate-based rare earth ion doped visible-ultraviolet up-conversion luminescent material and its preparation method and application. Background technique [0002] Ultraviolet sterilization technology has been gradually applied in the field of sewage and industrial disinfection since the 1970s. In the 1990s, with the breakthrough of key technologies, and because of its unique environmental protection and clean characteristics, it has been widely used in European and American countries. Ultraviolet light is a kind of light wave invisible to the naked eye, which exists outside the violet end of the spectrum, and can destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in the cells of microorganisms, causing growth cell death and / or ) regenerative cell death, to achieve the effect of sterilization. After test...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/63C09K11/77A01N59/16A01P1/00
CPCA01N59/16C09K11/7712C09K11/778
Inventor 杨艳民张伟刘东阳
Owner HEBEI UNIVERSITY
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