Synthesis and enhanced luminescence properties of BaB2O4: Eu3+ microphosphor prepared from the Ba3B6O9(OH)6:Eu3+ precursor

Feng, Xiaoqin; Tang, Anjiang; Huang, Hongsheng

doi:10.1016/j.ijleo.2018.07.048

Cited by 7 publications

(1 citation statement)

References 35 publications

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“…Based on the earlier experimental results and the reported literature, the reaction mechanism of BaB 2 O 4 :Eu 3+ formation via the two‐step method were undertaken by the following four steps: (1) the ionization and hydrolysis of the raw materials; (2) formation of Ba‐B‐O:Eu 3+ ; (3) dehydration and decomposition of Ba‐B‐O:Eu 3+ ; (4) crystal transformation or recrystallization, and the formation of BaB 2 O 4 :Eu 3+ .…”

Section: Resultsmentioning

confidence: 99%

Two‐ step synthesis and luminescent properties of BaB₂O₄:Eu³⁺ nano/microphosphors prepared from Ba‐B‐O:Eu³⁺ precursor

et al. 2019

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The BaB 2 O 4 :Eu 3+ nano/microphosphors with sphere-, rod-, and granular-like morphologies were successfully obtained by a two-step method using Ba-B-O:Eu 3+ as the precursor. The structure, morphology and photoluminescent properties of the products were characterized by Fourier transfer infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetry-differential thermal analysis (TG-DTA), scanning electron microscopy (SEM) and photoluminescence (PL). The formation mechanisms of Ba-B-O:Eu 3+ and BaB 2 O 4 :Eu 3+ were proposed. The results show that the BaB 2 O 4 :Eu 3+ could retain the original morphologies of their respective precursors largely. The BaB 2 O 4 :Eu 3+ prepared by this two-step method exhibited better morphology, smaller particle size and better crystallinity than when prepared by a solid-state method. The granular-like BaB 2 O 4 :Eu 3+ red phosphor prepared by this two-step method exhibited stronger PL intensity and better red color purity than when prepared by a solid-state method. morphologies were prepared by calcination of Ba-B-O:Eu 3+ precursor, and the relationship between the morphology of Ba-B-O:Eu 3+ and BaB 2 O 4 :Eu 3+ was studied. The luminescent properties of BaB 2 O 4 :Eu 3+ were also studied. In addition, a comparative study on this twostep method and the conventional solid-state method was carried out. | EXPERIMENTALThe Ba-B-O:Eu 3+ precursors were synthesized by an hydrothermal method and a supersonic co-precipitation method. In the procedure for preparing sphere-like Ba-B-O:Eu 3+ (Ba-B-O-S), 6 mmol of BaCl 2 ·2H 2 O, 5% mol of Eu(NO 3 ) 3 ·6H 2 O and 9 mmol of Na 2 B 4 O 7 ·10H 2 O were dissolved in 50 mL of water (H 2 O). After stirring for 0.5 h, the mixture was transferred into an autoclave and reacted at 180°C for 48 h, and then the precipitate was washed and dried at 40°C for 24 h. In the procedure for preparing rod-like Ba-B-O:Eu 3+ (Ba-B-O-R), 4 mmol of BaCl 2 ·2H 2 O, 6 mmol of Na 2 B 4 O 7 ·10H 2 O, 8 mmol of sodium hydroxide (NaOH) and 5% mol of Eu(NO 3 ) 3 ·6H 2 O were dissolved in 50 mL H 2 O. After stirring for 0.5 h, the slurry was transferred to an autoclave and maintained at 160°C for 12 h. The precipitate was washed and dried at 40°C for 24 h. In the procedure for preparing granular-like Ba-B-O:Eu 3+ (Ba-B-O-G), 3 mmol of Ba (NO 3 ) 2 , 3 mmol of Na 2 B 4 O 7 ·10H 2 O, 7 mmol of NaOH and 5% mol of Eu(NO 3 ) 3 ·6H 2 O were dissolved in 80 mL H 2 O. After stirring for 0.5 h, the mixture was placed into an ultrasonic reactor and reacted at 80°C for 72 h, and then the precipitate was washed and dried at 40°C for 24 h. The BaB 2 O 4 : Eu 3+ which were named BBO-S, BBO-R and BBO-G were synthesized by calcining the Ba-B-O-S, Ba-B-O-R and Ba-B-O-G products at 800°C for 4 h, respectively. For comparison, the BaB 2 O 4 :Eu 3+ (BBO-B) was prepared by the solid-state method at 800°C for 4 h using BaCO 3 , H 3 BO 3 and Eu 2 O 3 (99.99%) as the raw materials. X-ray diffraction (XRD) data were collected using a Rigaku D/MAX-C X-ray diffractor with Cu Kα. The Fourier t...

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Section: Resultsmentioning

confidence: 99%

Two‐ step synthesis and luminescent properties of BaB₂O₄:Eu³⁺ nano/microphosphors prepared from Ba‐B‐O:Eu³⁺ precursor

et al. 2019

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Structural, photo, optical and thermal luminescent properties of beta barium metaborate

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Bulur

2020

Journal of Alloys and Compounds

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A new BaB2O4 microwave dielectric ceramic for LTCC application

Huang

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et al. 2023

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Synthesis and enhanced luminescence properties of BaB2O4: Eu3+ microphosphor prepared from the Ba3B6O9(OH)6:Eu3+ precursor

Cited by 7 publications

References 35 publications

Two‐ step synthesis and luminescent properties of BaB₂O₄:Eu³⁺ nano/microphosphors prepared from Ba‐B‐O:Eu³⁺ precursor

Two‐ step synthesis and luminescent properties of BaB₂O₄:Eu³⁺ nano/microphosphors prepared from Ba‐B‐O:Eu³⁺ precursor

Structural, photo, optical and thermal luminescent properties of beta barium metaborate

A new BaB2O4 microwave dielectric ceramic for LTCC application

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Synthesis and enhanced luminescence properties of BaB2O4: Eu3+ microphosphor prepared from the Ba3B6O9(OH)6:Eu3+ precursor

Cited by 7 publications

References 35 publications

Two‐ step synthesis and luminescent properties of BaB2O4:Eu3+ nano/microphosphors prepared from Ba‐B‐O:Eu3+ precursor

Two‐ step synthesis and luminescent properties of BaB2O4:Eu3+ nano/microphosphors prepared from Ba‐B‐O:Eu3+ precursor

Structural, photo, optical and thermal luminescent properties of beta barium metaborate

A new BaB2O4 microwave dielectric ceramic for LTCC application

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Two‐ step synthesis and luminescent properties of BaB₂O₄:Eu³⁺ nano/microphosphors prepared from Ba‐B‐O:Eu³⁺ precursor

Two‐ step synthesis and luminescent properties of BaB₂O₄:Eu³⁺ nano/microphosphors prepared from Ba‐B‐O:Eu³⁺ precursor