Citation: WANG Peng, LI Zhao, ZHOU Ying-Mei, XU Yan, ZHU Jie, WANG Shi-Fan, CAI Ke-Ying, LI Jing, DU Xi-Hua, YANG Peng-Ju. Synthesis of Carbon Nanotubes Modified g-C₃N₄ Photocatalysts for Enhanced Photocatalytic Degradation Activity[J]. Chinese Journal of Inorganic Chemistry, ;2019, 35(2): 217-224. doi: 10.11862/CJIC.2019.022 shu

Synthesis of Carbon Nanotubes Modified g-C₃N₄ Photocatalysts for Enhanced Photocatalytic Degradation Activity

WANG Peng ¹ ,
LI Zhao ^1,2 ,
ZHOU Ying-Mei ¹ ,
XU Yan ¹ ,
ZHU Jie ¹ ,
WANG Shi-Fan ¹ ,
CAI Ke-Ying ¹ ,
LI Jing ¹ ,
DU Xi-Hua ¹ ,
YANG Peng-Ju ^3,,

1.
School of Chemistry and Chemical Engineering, Xuzhou Institute of Technology, Xuzhou, Jiangsu 221018, China
2.
School of Chemical Engineering & Technology, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
3.
State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, China

Corresponding author: YANG Peng-Ju, yangpengju10@mails.ucas.ac.cn
Received Date: 16 September 2018
Revised Date: 21 November 2018

Figures(13)

Graphitic carbon nitride hybridized with a small number of carbon nanotubes (CNT) was synthesized using urea as precursor. The resulting CNT/g-C₃N₄ composite photocatalysts were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), Fourier infrared spectrometer (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible-near infrared Reflection Spectrophotometer (UV-Vis-NIR Spectrophotometer) and photoluminescence spectroscopy (PL). Results indicate that the synergistic interaction between CNT and g-C₃N₄ changed the optical properties of bulk g-C₃N₄, affected the energy band structure, enhanced the absorption of visible light, optimized the distribution of the photogenerated carrier and improved the electron-hole separation rate. The photocatalytic degradation of rhodamine B solution (RhB) was performed under visible light irradiation. The photocatalytic activity of CNT/g-C₃N₄ composite was the highest when 0.1%(w/w) CNT was loaded on the substrate, the rate constant for the photocatalyst was 3.1 times as high as that of pure g-C₃N₄. It was also found that the superoxide radical was the main active species for catalytic degradation in this system.
- photocatalysis,
- graphitic carbon nitride,
- carbon nanotubes,
- visible light
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Synthesis of Carbon Nanotubes Modified g-C₃N₄ Photocatalysts for Enhanced Photocatalytic Degradation Activity