INTEGRATED FERROELECTRICS
·
2020
·
IF 0.557
Bingqi Pan,Peisong Tang,Shanshan Gao,Weibin Shen,Haifeng Chen
Using lutetium oxide, nitric acid, ammonium vanadate and citric acid as main materials, LuVO4 was prepared by a facile sol-gel method. The gel of LuVO4 was kept at 100 °C for 24 h to get the xerogel. Then, the xerogel was, respectively, calcined in muffle furnace at 500 °C, 600 °C, 700 °C and 800 °C to make single phase nanoparticulate LuVO4. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), Fourier transform infrared (FT-IR) spectroscopy and diffuse reflectance spectroscopy (DRS). The results showed that the pure LuVO4 can be obtained through calcination at 700–800 °C. LuVO4 had an average particle size of 100 nm and the band gap was 2.25 eV. The photocatalytic activities of LuVO4 were investigated by methylene blue which was used as simulated sewage. Under visible light, LuVO4 showed good photocatalytic degradation activity for degradation of methylene blue. This indicated that LuVO4 has broad practical application prospects in the field of photocatalytic degradation of organic pollutants.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2016
·
IF 5.31
Yuexin Wang,Yanhua Song,Xiuqing Zhou,Yi Li,Tingting Cui,Keyan Zheng,Ye Sheng,Haifeng Zou
A series of color-tunable emitting LuVO 4 :Tm 3+ ,Dy 3+ ,Eu 3+ microspheres were successfully synthesized by a solvothermal process. The structure was characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results revealed that the sample is pure tetragonal phase of LuVO 4 and consists of 3D-hierachical microspheres with the diameter about 2 μm. Additionally, the possible formation mechanism of microspheres was proposed. Furthermore, the photoluminescence properties of LuVO 4 :Dy 3+ ,Eu 3+ samples were investigated in detail. Both blue and yellow emissions corresponding to the 4 F 9/2 - 6 H 15/2 , 4 F 9/2 - 6 H 13/2 transition of Dy 3+ ions and red emission corresponding to the 5 D 0 - 7 F J (J = 1, 2, 3, 4) transition of Eu 3+ ions can be observed in LuVO 4 :Dy 3+ ,Eu 3+ phosphors under 366 nm near-ultraviolet radiation. The energy transfer process between Dy 3+ and Eu 3+ was demonstrated to be resonant type via dipole-quadrupole mechanism. Additionally, when co-doping Dy 3+ with Tm 3+ or Eu 3+ or tri-doping Tm 3+ ,Dy 3+ ,Eu 3+ ions in the single component, the colorful emitting can be obtained by giving abundant blue, green, red, yellow, orange, especially white-light-emission. This type of color-tunable luminescence phosphors may have promising application in solid state lighting application.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2016
·Vol. 41
·期 2
·709-716
·
IF 3.277
Yuexin Wang,Yanhua Song,Yi Li,Tingting Cui,Xiuqing Zhou,Ye Sheng,Keyan Zheng,Hongpeng You,Haifeng Zou
LuVO4:Eu3+ nano/microcrystals with different morphologies/sizes including nanoparticles, nanosheets, nanodisks, nanoquadrangles, sub-microflakes, microspheres, and bulks were successfully synthesized by a mild solvothermal process using tartaric acid (TA) as the template. The amount of tartaric acid (TA) and the initial pH value play vital roles in controlling the morphologies of LuVO4 products. Besides, the reaction temperature was responsible for the generation of pure LuVO4 crystals in the presence of TA. Based on this, the possible formation mechanism of multi-morphologies was proposed. Furthermore, the dependence of luminescence performance on morphology has been discussed in detail. The LuVO4:Ln3+ (Ln = Tm3+, Er3+, Sm3+, Eu3+) nanoparticles show the characterized transition of Ln3+ and give bright blue, green, orange-red and red emission. Moreover, blue-green, green-yellow, pink, yellow-pink and white light can be obtained by adjusting the amount of doped Ln3+ ions and the corresponding concentrations of the LuVO4 host. This general and simple method may be of much significance in the synthesis of many other rare earth inorganic materials.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2016
·Vol. 45
·期 6
·2974-2980
·
IF 1.491
Zheng Yuhui,Hu Jing,Deng Surong,Gao Jinwei,Wang Qianming
High-purity LuVO 4 : Ln 3+ /Bi 3+ (Ln = Eu, Sm, Dy) phosphors with tetragonal zircon structures were successfully synthesized. The reactions have been carried out by multiple irradiations with very high efficiency. Transmission electron microscope images showed that the phosphors had rod-like structures with average lengths of about 200 nm. The host absorption edge of LuVO 4 : Ln 3+ /Bi 3+ (Ln = Eu, Sm) shifted to the longer wavelength side. Furthermore, the red emission of Eu 3+ ion and the orange emission of Sm 3+ ion are remarkably enhanced by encapsulating Bi 3+ in LuVO 4 system, whereas in the case of LuVO 4 : Dy 3+ /Bi 3+ , the host absorption and the yellow emission from dysprosium have been suppressed in the presence of Bi 3+ . These novel findings will facilitate their use in the display field.
研究领域:
材料科学
·
光学材料
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发光材料
·
无机化学
·
纳米材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）