Dramatic improvement of photocatalytic activity for N-doped Bi2O3/g-C3N4 composites

作者：Xue, Song; Hou, Xiaoyi; Xie, Wenhe; Wei, Xiucheng; He, Deyan^*

来源：Materials Letters, 2015, 161: 640-643.

DOI：10.1016/j.matlet.2015.09.067

• Semiconductors
• Composite materials
• Ultrasonic dispersion photocatalysis
• Visible light

N-doped Bi2O3/g-C3N4 composite photocatalysts were prepared via a cost-effective and eco-friendly ultrasonic dispersion method. It was shown that N-doped Bi2O3 nanoparticles have been perfectly coated by thin g-C3N4 layers. Under visible-light irradiation, the optimum photocatalytic activity of the composite with 66.7 wt% of g-C3N4 is almost 4.6 times as high as that of pure g-C3N4 and 8.2 times of Bi2O3, and the RhB degradation efficiency can reach 94.4% in 15 min. The dramatically improved performance of the composite can be attributed to an enhancement of visible-light absorption and a synergistic effect of N-doped Bi2O3 nanoparticles and g-C3N4 coatings.

• 出版日期2015-12-15
• 单位兰州大学