化工新型材料

化工新型材料 ›› 2023, Vol. 51 ›› Issue (12) : 97-101. DOI: 10.19817/j.cnki.issn1006-3536.2023.12.002

新材料与新技术

MgGa₂O₄∶Cr³⁺,Al³⁺近红外发光长余辉纳米粒子的制备及发光性能研究

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Preparation and luminescence properties of MgGa₂O₄∶Cr³⁺,Al³⁺ near-infrared persistent luminescence nanoparticles

Sun Xuefeng, Zhao Tianqi, Renagul Abdurahman, Yang Qianting, Yang Tongsheng, Ruxiangul Aiwaili

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Received		Published
2022-08-09		2023-12-20
Issue Date	Revised Date
2023-12-27	2022-08-09

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摘要

利用乙二醇辅助共沉淀法,制备了小尺寸近红外发光Al³⁺共掺杂镓酸镁(MgGa₂O₄)∶0.3% Cr³⁺(MGO∶0.3% Cr³⁺,Al³⁺)长余辉发光纳米粒子(PLNP),考察了Al³⁺掺杂对MGO∶0.3% Cr³⁺晶体结构和光学性质的影响。研究结果表明,Al³⁺掺杂对MGO∶0.3% Cr³⁺的晶体结构无影响,但能提高MGO∶0.3% Cr³⁺的发光强度。当Al³⁺掺杂量为0.4%(摩尔分数)时,MGO∶0.3% Cr³⁺,0.4% Al³⁺(Al³⁺、Cr³⁺相对于Ga³⁺的物质的量比,摩尔分数)PLNP发光强度最强,余辉平均发光寿命从46.98s(MGO∶0.3% Cr³⁺)增大至78.75s(MGO∶0.3% Cr³⁺,0.4% Al³⁺),平均粒径为(6.53±1.79)nm。本研究为制备小尺寸和高发光强度的PLNP提供了一种有效的方法。此外,高发光强度和长余辉寿命的MGO∶0.3% Cr³⁺,0.4% Al³⁺ PLNP为光学传感、成像和治疗等提供了材料支撑。

Abstract

Herein,small-sized near-infrared luminescence Al³⁺ co-doped MgGa₂O₄∶0.3% Cr³⁺ (MGO∶0.3% Cr³⁺,Al³⁺) persistent luminescent nanoparticles (PLNP) were prepared by ethylene glycol-assisted co-precipitation.The effects of Al³⁺ doping on the crystal structure and optical properties of MGO∶0.3% Cr³⁺ were investigated.The results showed that Al³⁺ doping had no effect on the crystal structure of MGO∶0.3% Cr³⁺,but could improve the luminescence intensity of MGO∶0.3% Cr³⁺.When the Al³⁺ doping concentration was 0.4%,the MGO∶0.3% Cr³⁺,0.4% Al³⁺(Al³⁺,Cr³⁺ relative to Ga³⁺,molar fraction) PLNP with an average particle size of (6.53±1.79)nm had the strongest luminescence intensity,and the average luminescence lifetime of the afterglow increased from 46.98s (MGO∶0.3% Cr³⁺) to 78.75s (MGO∶0.3% Cr³⁺,0.4% Al³⁺).Thus,the study offers an effective method for the preparation of PLNP with small sizes and high luminescence intensity.Moreover,MGO∶0.3% Cr³⁺,0.4% Al³⁺ PLNP with high luminescence intensity and afterglow lifetime provides a material support in the fields of optical sensing,imaging,and therapy.

关键词

Al³⁺共掺杂 / 共沉淀法 / 小尺寸 / 长余辉发光纳米粒子 / 镓酸镁(MgGa₂O₄)

Key words

Al³⁺ co-doped / co-precipitation method / small-size / persistent luminescence nanoparticles / magnesium gallate (MgGa₂O₄)

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MgGa₂O₄∶Cr³⁺,Al³⁺近红外发光长余辉纳米粒子的制备及发光性能研究[J]. 化工新型材料, 2023, 51(12): 97-101 DOI:10.19817/j.cnki.issn1006-3536.2023.12.002

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