| Autor: |
Peng Dai, You-Quan Sun, Zhi-Wei Bao, Jin Zhu, Ming-Zai Wu |
| Předmět: |
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| Zdroj: |
Micro & Nano Letters (Wiley-Blackwell); 2017, Vol. 12 Issue 4, p248-251, 4p |
| Abstrakt: |
Mesoporous SiO2/Zn2SiO4:Eu3+ hollow nanospheres were successfully synthesised via the combination of layer-by-layer and combustion technique. The structures and morphologies of as-obtained SiO2/Zn2SiO4:Eu3+ nanospheres were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N2 adsorption-desorption isotherms techniques. SiO2/Zn2SiO4:Eu3+ nanospheres can be tested as adsorbents to remove heavy metal ions, which showed good adsorption capacity and selectively adsorption especially for Pb2+ and Cu2+ than Cd2+. The optical properties studies of as-synthesised samples showed that mesoporous SiO2/Zn2SiO4:Eu3+ hollow nanospheres had strong red emission around 618 nm, and the optimal loading dosage of Eu3+ was determined. Moreover, the mesoporous SiO2/Zn2SiO4:Eu3+ hollow nanospheres could offer cell optical imaging by conventional fluorescence with 543 nm excitation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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