Controllable synthesis of Zn2TiO4@carbon core/shell nanofibers with high photocatalytic performance.
Zn(2)TiO(4)@carbon core/shell nanofibers (Zn(2)TiO(4)@C NFs) with different thickness of carbon layers (from 2 to 8 nm) were fabricated by combining the electrospinning technique and hydrothermal method. The results showed that a uniform carbon layer was formed around the electrospun Zn(2)TiO(4) nanofiber (Zn(2)TiO(4) NFs). By adjusting the hydrothermal fabrication parameters, the thickness of carbon layer varied linearly with the concentration of glucose. Furthermore, the core/shell structure formed between Zn(2)TiO(4) and carbon enhanced the charge separation of pure Zn(2)TiO(4) under ultraviolet excitation, as evidenced by photoluminescence spectra. The photocatalytic studies revealed that the Zn(2)TiO(4)@C NFs exhibited enhanced photocatalytic efficiency of photodegradation of Rhodamine B (RB) compared with the pure Zn(2)TiO(4) NFs under ultraviolet excitation, which might be attributed to the high separation efficiency of photogenerated electrons and holes based on the synergistic effect between carbon and Zn(2)TiO(4). Notably, the Zn(2)TiO(4)@C NFs could be recycled easily by sedimentation without a decrease of the photocatalytic activity.
Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024, PR China.
Peng
P
Zhang
Changlu
C
Shao
Mingyi
M
Zhang
Zengcai
Z
Guo
Jingbo
J
Mu
Zhenyi
Z
Zhang
Xin
X
Zhang
Pingping
P
Liang
Yichun
Y
Liu
D002244:Carbon / Q000737:chemistry / Q000528:radiation effects; D002384:Catalysis; D005456:Fluorescent Dyes / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry* / Q000528:radiation effects; D010782:Photolysis; D012235:Rhodamines / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry* / Q000528:radiation effects; D014466:Ultraviolet Rays; D015032:Zinc / Q000737:chemistry* / Q000528:radiation effects
D005456:Fluorescent Dyes; D012235:Rhodamines; D002244:Carbon; D014025:Titanium; D015032:Zinc; C029773:rhodamine B