Results
Title

Optical and adsorption properties of mesoporous SiO<sub>2</sub>/Zn<sub>2</sub>SiO<sub>4</sub>:Eu<sup>3 </sup> hollow nanospheres.

Authors

Peng Dai; You-Quan Sun; Zhi-Wei Bao; Jin Zhu; Ming-Zai Wu

Abstract

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.

Subjects

MESOPOROUS silica; ZINC compounds; OPTICAL properties of metals; ADSORPTION (Chemistry); EUROPIUM compounds

Publication

Micro & Nano Letters (Wiley-Blackwell), 2017, Vol 12, Issue 4, p248

ISSN

1750-0443

Publication type

Academic Journal

DOI

10.1049/mnl.2016.0474