Luminescent material doped with metal nanoparticles and preparation method thereof
A technology of metal nanoparticles and luminescent materials, applied in the field of luminescent materials doped with metal nanoparticles and their preparation, can solve problems such as attenuation and low luminous efficiency, and achieve the effects of simple process, low equipment requirements and stable structure
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[0020] Further, an embodiment of the present invention provides a method for preparing the above-mentioned luminescent material doped with metal nanoparticles, including the following steps:
[0021] Dissolving the metal compound corresponding to the metal nanoparticle, and then mixing it with an auxiliary agent and a reducing agent in turn to obtain a metal nanoparticle sol;
[0022] According to the molecular formula Ln 2 Eu z o 3 According to the stoichiometric ratio of corresponding elements, the Ln compound and the Eu compound are mixed, and dissolved in water or / and strong acid, then metal nanoparticle sol is added, and the luminescent material precursor doped with metal nanoparticles is prepared by liquid phase synthesis , wherein, the value range of z is 0<z≤0.30, Ln is at least one of Gd, Y, La;
[0023] The precursor is pre-calcined, then calcined, cooled and then ground to obtain the luminescent material doped with metal nanoparticles.
[0024] The above-mention...
Embodiment 1
[0051] Preparation of Gd by Combustion 1.84 Li 0.08 Eu 008 o 3 :5×10 -5 Au
[0052] Measure Gd with a concentration of 0.5mol / L according to the stoichiometric ratio 3+18.4ml of Eu with a concentration of 0.5mol / L 3+ 0.8ml, and weigh Li 2 CO 3 0.0148g, urea 0.5405g (urea / nitrate ion molar ratio is 0.3), mix well, add 0.25ml concentration to be 1×10 -3 mol / L metal Au nanoparticle sol, stirred to make it evenly mixed, placed in a heating furnace and heated until the water evaporated to obtain a jelly, placed in a muffle furnace and heated at 300°C for 15 minutes, spontaneous combustion occurred instantaneously, A precursor doped with metallic Au nanoparticles was obtained.
[0053] The precursor was pre-calcined in a muffle furnace at 600°C for 3 hours, and ground evenly, and the pre-calcined product was calcined at 900°C for 9 hours, cooled to room temperature, and ground to obtain Gd 1.84 Li 0.08 Eu 0.08 o 3 :5×10 -5 Au luminescent material.
Embodiment 2
[0055] Preparation of Gd by Combustion 1.34 Li 0.08 Zn 0.50 Eu 0.08 o 3 :2×10 -4 Ag
[0056] Measure Gd with a concentration of 0.5mol / L according to the stoichiometric ratio 3+ 13.4ml of Eu with a concentration of 0.5mol / L 3+ 0.8ml of Zn with a concentration of 1mol / L 2+ Ion 2.5ml, and weigh Li 2 CO 3 0.0148g, glycine 0.6756g (glycine / nitrate ion molar ratio is 0.3), mix well, add 1ml concentration to be 1×10 -3 mol / L metal Ag nanoparticle sol, stir to make it evenly mixed, place it on a heating furnace and heat until the water evaporates, and obtain a gel, place it in a muffle furnace and heat it at 300°C for 15 minutes, spontaneous combustion occurs instantly, A precursor doped with metallic Ag nanoparticles is obtained.
[0057] Pre-calcin the precursor in a muffle furnace at 500°C for 5h, grind it evenly, calcinate the pre-calcined product at 1200°C for 3h, cool to room temperature, and grind to obtain Gd 1.84 Li 0.08 Eu 0.08 o 3 :2×10 -4 Ag luminescent ma...
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