scholarly journals The synthesis and characterization of ytterbium-doped TiO2 hollow spheres with enhanced visible-light photocatalytic activity

RSC Advances ◽  
2017 ◽  
Vol 7 (40) ◽  
pp. 24598-24606 ◽  
Author(s):  
Xueliang Jiang ◽  
Chenjian Li ◽  
Song Liu ◽  
Fuqing Zhang ◽  
Feng You ◽  
...  

SEM images of Melamine-formaldehyde polymer microspheres (MF) (a) and Yb-doped TiO2 hollow spheres (Yb-TiO2HS) (b).

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