Defect-related luminescence properties of hydroxyapatite nanobelts

被引：32

作者：

Huerta, Veronica J. ^{[1
]}

Fernandez, Paloma ^{[2
]}

Gomez, Virginia ^{[3
]}

Graeve, Olivia A. ^{[4
]}

Herrera, Manuel ^{[5
]}

机构：

[1] Ctr Invest Cient & Educ Super Ensenada, Carretera Ensenada Tijuana 3918, Ensenada 22860, Baja California, Mexico

[2] Univ Complutense Madrid, Dept Fis Mat, Fac Fis, Madrid 28040, Spain

[3] Univ Nacl Autonoma Mexico, Inst Quim, Circuito Exterior S-N,Ciudad, Mexico City 04510, DF, Mexico

[4] Univ Calif San Diego, Dept Mech & Aerosp Engn, 9500 Gilman Dr,MC 0411, La Jolla, CA 92093 USA

[5] Univ Nacl Autonoma Mexico, Ctr Nanociencias & Nanotecnol, Km 107 Carretera Tijuana Ensenada, Ensenada 22800, Baja California, Mexico

来源：

APPLIED MATERIALS TODAY | 2020年 / 21卷

基金：

美国国家科学基金会;

关键词：

Hydroxyapatite; Point defect; Luminescence; Nanobelt; Electron paramagnetic resonance; ACTIVATED PHOTOLUMINESCENCE EMISSIONS; IRRADIATED TOOTH ENAMEL; CALCIUM PHOSPHATES; NANOSIZED HYDROXYAPATITE; OXYGEN VACANCIES; CO2; RESONANCE; COATINGS; IONS; DRUG;

D O I：

10.1016/j.apmt.2020.100822

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, we study the generation of visible and near-infrared (NIR) luminescence associated with the formation of point defects in hydroxyapatite (HAp) nanobelts. Three different HAp samples were synthesized by a modified hydrothermal method at growth times of 24, 30, and 36 h. Transmission electron microscopy measurements revealed the presence of stacking faults in the nanobelts grown during shorter times. X-ray diffraction and Raman spectroscopy measurements confirmed the high crystalline quality of the samples, showing a hexagonal calcium deficient (Ca-D) HAp phase, supported by the Ca/P ratio of 1.2 and 1.3 revealed by X-ray photoelectron spectroscopy and energy dispersive spectroscopy measurements, respectively. Electron paramagnetic resonance, photoluminescence, and cathodoluminescence measurements demonstrated the presence of hydroxyl ion vacancies (V-OH(-)), calcium vacancies (V-Ca), and oxygen vacancies (V-O) in HAp nanobelts generates a strong luminescence in the visible and NIR ranges. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：10

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