Open AccessOptical and adsorption properties of mesoporous SiO 2 /Zn 2 SiO 4 :Eu 3+ hollow nanospheres
Author(s) -
Dai Peng,
Sun YouQuan,
Bao ZhiWei,
Zhu Jin,
Wu MingZai
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0474
Subject(s) - mesoporous material , transmission electron microscopy , materials science , adsorption , scanning electron microscope , desorption , chemical engineering , analytical chemistry (journal) , nanotechnology , nuclear chemistry , chemistry , composite material , chromatography , catalysis , organic chemistry , engineering
Mesoporous SiO 2 /Zn 2 SiO 4 :Eu 3+ hollow nanospheres were successfully synthesised via the combination of layer‐by‐layer and combustion technique. The structures and morphologies of as‐obtained SiO 2 /Zn 2 SiO 4 :Eu 3+ nanospheres were investigated using X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N 2 adsorption–desorption isotherms techniques. SiO 2 /Zn 2 SiO 4 :Eu 3+ nanospheres can be tested as adsorbents to remove heavy metal ions, which showed good adsorption capacity and selectively adsorption especially for Pb 2+ and Cu 2+ than Cd 2+ . The optical properties studies of as‐synthesised samples showed that mesoporous SiO 2 /Zn 2 SiO 4 :Eu 3+ hollow nanospheres had strong red emission around 618 nm, and the optimal loading dosage of Eu 3+ was determined. Moreover, the mesoporous SiO 2 /Zn 2 SiO 4 :Eu 3+ hollow nanospheres could offer cell optical imaging by conventional fluorescence with 543 nm excitation.