Microwave synthesis, characterization and properties of lanthanide phosphites GdxTb2-x (HPO3)3 (H2O)2(0 ≤ x ≤ 2)

Xi Wang; Yide Han; Suqin Hao; Jihong Yu; Ruren Xu

doi:10.6023/A12040101

Microwave synthesis, characterization and properties of lanthanide phosphites Gd_xTb_2-x (HPO₃)₃ (H₂O)₂(0 ≤ x ≤ 2)

Xi Wang, Yide Han, Suqin Hao, Jihong Yu^*, Ruren Xu

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Jilin University

科研成果: 期刊稿件 › 文章 › 同行评审

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摘要

A family of novel lanthanide phosphites Gd_xTb_2-x (HPO₃)₃ (H₂O)₂ (0 ≤ x ≤ 2) were successfully synthesized by using the microwave irradiation synthesis method. In the synthetic procedure of Ln₂ (HPO₃)₃ (H₂O)₂ (Ln=Gd, Tb), the mixture of 15 mL solution of Ln(NO₃)₃ (0.2 mol/L), 0.12 g of H₃PO₃ and 300 μL of TMAOH was heated to 18°C in 1 min in a microwave oven (Milestone ETHOS-D), and kept for 10 min at the same temperature. The Tb³⁺/Gd³⁺ mixed samples were prepared by introducing the desired Tb³⁺ and Gd³⁺ contents in the initial gel. They are isostructural confirmed by the powder X-ray diffraction analysis. The structure of Gd₂ (HPO₃)₃ (H₂O)₂ was determined by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic space group P2₁/c with a=6.9124(6)Å, b=12.8891(12)Å, c=12.3692(11)Å, β = 100.1520(10)°. Its structure is comprised of GdO_n (n=7, 8) polyhedra that are linked via [HPO₃] pseudo tetrahedra, giving rise to a 3D framework. The structure of Gd₂ (H₂O)₂ (HPO₃)₃ is different from the compounds Pr₂ (H₂O)₂ (HPO₃)₃ and La₂ (H₂O)₂(HPO₃)₃, which are built from Pr(La)O₉ polyhedra connected with [HPO₃] pseudo tetrahedral. The photoluminescent study of Gd₂ (HPO₃)₃ (H₂O)₂ and Tb₂ (HPO₃)₃(H₂O)₂ show that they display the typical Gd³⁺ and Tb³⁺ photoluminescence, respectively. The excitation spectra monitored at the main ⁵D₄ → ⁷F₅ line (542 nm) of Tb³⁺ for the Tb³⁺/Gd³⁺ mixed samples display both characteristic Tb³⁺ and Gd³⁺ lines, which reveals the existence of Gd³⁺ to Tb3³⁺ energy transfer. The emission spectra of Tb³⁺/Gd³⁺ mixed samples excited in the Gd³⁺ (273 nm) levels show the typical Tb³⁺ lines, also implying the occurrence of Gd³⁺-Tb³⁺ energy transfer. The intensity of ⁵D₄ → ⁷F₃ increases with increasing the content of Tb³⁺, which indicate that the Tb³⁺ doped gadolinium phosphites could be used as green color phosphors. The magnetic measurement of Gd₂ (HPO₃)₃ (H₂O)₂ reveals that it exhibits very weak antiferromagnetic behavior and its experimental reciprocal susceptibility can be fitted by Curie-Weiss law at 4-300 K.

源语言	英语
页（从-至）	1496-1500
页数	5
期刊	Acta Chimica Sinica
卷	70
期	13
DOI	https://doi.org/10.6023/A12040101
出版状态	已出版 - 14 3月 2012
已对外发布	是

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@article{4ade793c9e8e445d9bd0391e6005bddb,

title = "Microwave synthesis, characterization and properties of lanthanide phosphites GdxTb2-x (HPO3)3 (H2O)2(0 ≤ x ≤ 2)",

abstract = "A family of novel lanthanide phosphites GdxTb2-x (HPO3)3 (H2O)2 (0 ≤ x ≤ 2) were successfully synthesized by using the microwave irradiation synthesis method. In the synthetic procedure of Ln2 (HPO3)3 (H2O)2 (Ln=Gd, Tb), the mixture of 15 mL solution of Ln(NO3)3 (0.2 mol/L), 0.12 g of H3PO3 and 300 μL of TMAOH was heated to 18°C in 1 min in a microwave oven (Milestone ETHOS-D), and kept for 10 min at the same temperature. The Tb3+/Gd3+ mixed samples were prepared by introducing the desired Tb3+ and Gd3+ contents in the initial gel. They are isostructural confirmed by the powder X-ray diffraction analysis. The structure of Gd2 (HPO3)3 (H2O)2 was determined by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic space group P21/c with a=6.9124(6){\AA}, b=12.8891(12){\AA}, c=12.3692(11){\AA}, β = 100.1520(10)°. Its structure is comprised of GdOn (n=7, 8) polyhedra that are linked via [HPO3] pseudo tetrahedra, giving rise to a 3D framework. The structure of Gd2 (H2O)2 (HPO3)3 is different from the compounds Pr2 (H2O)2 (HPO3)3 and La2 (H2O)2(HPO3)3, which are built from Pr(La)O9 polyhedra connected with [HPO3] pseudo tetrahedral. The photoluminescent study of Gd2 (HPO3)3 (H2O)2 and Tb2 (HPO3)3(H2O)2 show that they display the typical Gd3+ and Tb3+ photoluminescence, respectively. The excitation spectra monitored at the main 5D4 → 7F5 line (542 nm) of Tb3+ for the Tb3+/Gd3+ mixed samples display both characteristic Tb3+ and Gd3+ lines, which reveals the existence of Gd3+ to Tb33+ energy transfer. The emission spectra of Tb3+/Gd3+ mixed samples excited in the Gd3+ (273 nm) levels show the typical Tb3+ lines, also implying the occurrence of Gd3+-Tb3+ energy transfer. The intensity of 5D4 → 7F3 increases with increasing the content of Tb3+, which indicate that the Tb3+ doped gadolinium phosphites could be used as green color phosphors. The magnetic measurement of Gd2 (HPO3)3 (H2O)2 reveals that it exhibits very weak antiferromagnetic behavior and its experimental reciprocal susceptibility can be fitted by Curie-Weiss law at 4-300 K.",

keywords = "Lanthanide, Magnetism, Microwave synthesis, Phosphates, Photoluminescence",

author = "Xi Wang and Yide Han and Suqin Hao and Jihong Yu and Ruren Xu",

year = "2012",

month = mar,

day = "14",

doi = "10.6023/A12040101",

language = "English",

volume = "70",

pages = "1496--1500",

journal = "Acta Chimica Sinica",

issn = "0567-7351",

publisher = "Science China Press",

number = "13",

}

TY - JOUR

T1 - Microwave synthesis, characterization and properties of lanthanide phosphites GdxTb2-x (HPO3)3 (H2O)2(0 ≤ x ≤ 2)

AU - Wang, Xi

AU - Han, Yide

AU - Hao, Suqin

AU - Yu, Jihong

AU - Xu, Ruren

PY - 2012/3/14

Y1 - 2012/3/14

N2 - A family of novel lanthanide phosphites GdxTb2-x (HPO3)3 (H2O)2 (0 ≤ x ≤ 2) were successfully synthesized by using the microwave irradiation synthesis method. In the synthetic procedure of Ln2 (HPO3)3 (H2O)2 (Ln=Gd, Tb), the mixture of 15 mL solution of Ln(NO3)3 (0.2 mol/L), 0.12 g of H3PO3 and 300 μL of TMAOH was heated to 18°C in 1 min in a microwave oven (Milestone ETHOS-D), and kept for 10 min at the same temperature. The Tb3+/Gd3+ mixed samples were prepared by introducing the desired Tb3+ and Gd3+ contents in the initial gel. They are isostructural confirmed by the powder X-ray diffraction analysis. The structure of Gd2 (HPO3)3 (H2O)2 was determined by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic space group P21/c with a=6.9124(6)Å, b=12.8891(12)Å, c=12.3692(11)Å, β = 100.1520(10)°. Its structure is comprised of GdOn (n=7, 8) polyhedra that are linked via [HPO3] pseudo tetrahedra, giving rise to a 3D framework. The structure of Gd2 (H2O)2 (HPO3)3 is different from the compounds Pr2 (H2O)2 (HPO3)3 and La2 (H2O)2(HPO3)3, which are built from Pr(La)O9 polyhedra connected with [HPO3] pseudo tetrahedral. The photoluminescent study of Gd2 (HPO3)3 (H2O)2 and Tb2 (HPO3)3(H2O)2 show that they display the typical Gd3+ and Tb3+ photoluminescence, respectively. The excitation spectra monitored at the main 5D4 → 7F5 line (542 nm) of Tb3+ for the Tb3+/Gd3+ mixed samples display both characteristic Tb3+ and Gd3+ lines, which reveals the existence of Gd3+ to Tb33+ energy transfer. The emission spectra of Tb3+/Gd3+ mixed samples excited in the Gd3+ (273 nm) levels show the typical Tb3+ lines, also implying the occurrence of Gd3+-Tb3+ energy transfer. The intensity of 5D4 → 7F3 increases with increasing the content of Tb3+, which indicate that the Tb3+ doped gadolinium phosphites could be used as green color phosphors. The magnetic measurement of Gd2 (HPO3)3 (H2O)2 reveals that it exhibits very weak antiferromagnetic behavior and its experimental reciprocal susceptibility can be fitted by Curie-Weiss law at 4-300 K.

AB - A family of novel lanthanide phosphites GdxTb2-x (HPO3)3 (H2O)2 (0 ≤ x ≤ 2) were successfully synthesized by using the microwave irradiation synthesis method. In the synthetic procedure of Ln2 (HPO3)3 (H2O)2 (Ln=Gd, Tb), the mixture of 15 mL solution of Ln(NO3)3 (0.2 mol/L), 0.12 g of H3PO3 and 300 μL of TMAOH was heated to 18°C in 1 min in a microwave oven (Milestone ETHOS-D), and kept for 10 min at the same temperature. The Tb3+/Gd3+ mixed samples were prepared by introducing the desired Tb3+ and Gd3+ contents in the initial gel. They are isostructural confirmed by the powder X-ray diffraction analysis. The structure of Gd2 (HPO3)3 (H2O)2 was determined by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic space group P21/c with a=6.9124(6)Å, b=12.8891(12)Å, c=12.3692(11)Å, β = 100.1520(10)°. Its structure is comprised of GdOn (n=7, 8) polyhedra that are linked via [HPO3] pseudo tetrahedra, giving rise to a 3D framework. The structure of Gd2 (H2O)2 (HPO3)3 is different from the compounds Pr2 (H2O)2 (HPO3)3 and La2 (H2O)2(HPO3)3, which are built from Pr(La)O9 polyhedra connected with [HPO3] pseudo tetrahedral. The photoluminescent study of Gd2 (HPO3)3 (H2O)2 and Tb2 (HPO3)3(H2O)2 show that they display the typical Gd3+ and Tb3+ photoluminescence, respectively. The excitation spectra monitored at the main 5D4 → 7F5 line (542 nm) of Tb3+ for the Tb3+/Gd3+ mixed samples display both characteristic Tb3+ and Gd3+ lines, which reveals the existence of Gd3+ to Tb33+ energy transfer. The emission spectra of Tb3+/Gd3+ mixed samples excited in the Gd3+ (273 nm) levels show the typical Tb3+ lines, also implying the occurrence of Gd3+-Tb3+ energy transfer. The intensity of 5D4 → 7F3 increases with increasing the content of Tb3+, which indicate that the Tb3+ doped gadolinium phosphites could be used as green color phosphors. The magnetic measurement of Gd2 (HPO3)3 (H2O)2 reveals that it exhibits very weak antiferromagnetic behavior and its experimental reciprocal susceptibility can be fitted by Curie-Weiss law at 4-300 K.

KW - Lanthanide

KW - Magnetism

KW - Microwave synthesis

KW - Phosphates

KW - Photoluminescence

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DO - 10.6023/A12040101

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JO - Acta Chimica Sinica

JF - Acta Chimica Sinica

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Microwave synthesis, characterization and properties of lanthanide phosphites GdxTb2-x (HPO3)3 (H2O)2(0 ≤ x ≤ 2)

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Microwave synthesis, characterization and properties of lanthanide phosphites Gd_xTb_2-x (HPO₃)₃ (H₂O)₂(0 ≤ x ≤ 2)