Preparation of novel mesoporous GdVO4: Eu3+ crystals by CTAB-SDS micellar-assisted hydrothermal method in wide pH range

被引：6

作者：

Gu, Hong ^{[1
]}

Wang, Juan ^{[1
]}

Wang, Zhentao ^{[1
]}

Zhang, Mi ^{[1
]}

Yao, Jia ^{[1
]}

Zhang, Jing ^{[1
]}

Du, Zhenqiang ^{[1
]}

机构：

[1] Xian Univ Architecture & Technol, Shaanxi Key Lab Nanomat & Nanotechnol, Xian 710055, Shaanxi, Peoples R China

来源：

OPTICAL MATERIALS | 2019年 / 96卷

基金：

中国国家自然科学基金;

关键词：

Hydrothermal synthesis; Mesoporous GdVO4:Eu3+; pH values; CTAB-SDS micelles; DIFFERENT ORGANIC ADDITIVES; SILICA NANOPARTICLES; ANIONIC SURFACTANT; LUMINESCENT; PHOTOLUMINESCENCE; MORPHOLOGY; POWDERS; MICROSPHERES; FABRICATION; PHOSPHOR;

D O I：

10.1016/j.optmat.2019.109254

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using cetyl trimethyl ammonium bromide (CTAB) and sodium dodecyl sulfonate (SDS) as a template, the novel mesoporous europium doped miro-/nano-crystalline gadolinium vanadate (GdVO4:Eu3+) crystals were controllably synthesized by a facile hydrothermal process over a wide adjustable pH range. The structure, morphology and luminescence properties of GdVO4:Eu3+ crystals were characterized and compared by X-ray power diffraction (XRD), scanning electron microscope (SEM) transmission electron microscopy (TEM), nitrogen absorption-desorption and photoluminescence spectroscopy (PL). The results revealed that the pH influenced the nucleation rate of GdVO4:Eu3+ crystals in the reaction solution, and the CTAB and SDS performed a pivotal function in the morphology of final products via forming micelles and transforming growth direction. When the reaction solution was pH = 14, the cationic surfactant CTAB and anionic surfactant SDS were successively added, and the finally obtained phase-pure tetragonal GdVO4:Eu3+ crystals exhibited a mesoporous structure with a BET surface area of 11.41 m(2)/g and the average nanocrystalline size in the range of 40-60 nm. Additionally, the mesoporous GdVO4:Eu(3+)crystals showed the strongest luminescence intensity among all the samples with different morphologies.

引用

页数：11

共 55 条

[1] Fabrication and photoluminescence properties of color-tunable light emitting lanthanide doped GdVO4 hierarchitectures [J].