Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Novel photochromic luminescent material and preparation method thereof
The invention discloses a novel photochromic luminescent material and a preparation method thereof. The chemical formula of the material is Bi < 7-x > Er < x > Ti < 4 > NbO < 21 >, and x is equal to 0, 0.02, 0.05, 0.1, O.15 or 0.2. The preparation method comprises the following steps: taking Bi2O3, TiO2, Er2O3 and Nb2O5 as raw materials, weighing according to a chemical ratio, mixing and grinding by using a ball mill, and preparing the Bi7-xErxTi4NbO21 ceramic by using a high-temperature solid-phase reaction method. The invention has the advantage that the material shows obvious photochromism under the irradiation of 405nm light. Under the action of thermal stimulation and 532 nm light, color change can be recovered. The material can be used in the security anti-counterfeiting field in the future.
本发明公开一种光致变色发光新材料及其制备方法。材料的化学式为Bi7‑xErxTi4NbO21，其中，x＝0.O、0.02、0.05、0.1、O.15或0.2。制备方法是以Bi2O3、TiO2、Er2O3和Nb2O5作为原料，按化学配比称量，利用球磨机混合研磨，通过高温固相反应法而制备出Bi7‑xErxTi4NbO21陶瓷。本发明优点：在405nm光辐照下，材料展现明显的光致变色。在热刺激和532nm光作用下，变色可以被复。该材料未来可用于安全防伪领域。
Novel photochromic luminescent material and preparation method thereof
The invention discloses a novel photochromic luminescent material and a preparation method thereof. The chemical formula of the material is Bi < 7-x > Er < x > Ti < 4 > NbO < 21 >, and x is equal to 0, 0.02, 0.05, 0.1, O.15 or 0.2. The preparation method comprises the following steps: taking Bi2O3, TiO2, Er2O3 and Nb2O5 as raw materials, weighing according to a chemical ratio, mixing and grinding by using a ball mill, and preparing the Bi7-xErxTi4NbO21 ceramic by using a high-temperature solid-phase reaction method. The invention has the advantage that the material shows obvious photochromism under the irradiation of 405nm light. Under the action of thermal stimulation and 532 nm light, color change can be recovered. The material can be used in the security anti-counterfeiting field in the future.
本发明公开一种光致变色发光新材料及其制备方法。材料的化学式为Bi7‑xErxTi4NbO21，其中，x＝0.O、0.02、0.05、0.1、O.15或0.2。制备方法是以Bi2O3、TiO2、Er2O3和Nb2O5作为原料，按化学配比称量，利用球磨机混合研磨，通过高温固相反应法而制备出Bi7‑xErxTi4NbO21陶瓷。本发明优点：在405nm光辐照下，材料展现明显的光致变色。在热刺激和532nm光作用下，变色可以被复。该材料未来可用于安全防伪领域。
Novel photochromic luminescent material and preparation method thereof
一种光致变色发光新材料及其制备方法
ZHANG XINYI (Autor:in) / ZHANG CHENGHAN (Autor:in) / WANG JINGHONG (Autor:in)
05.05.2023
Patent
Elektronische Ressource
Chinesisch
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