Hydrothermal synthesis of mpg-C3N4 and Bi2WO6 nest-like structure nanohybrids with enhanced visible light photocatalytic activities

作者：Zhu, Xingwang; Liu, Jinyuan; Zhao, Zhenzhen; Yan, Jia; Xu, Yuanguo; Song, Yanhua; Ji, Haiyan; Xu, Hui^*; Li, Huaming^*

来源：RSC Advances, 2017, 7(61): 38682-38690.

DOI：10.1039/c7ra06681c

• METAL-FREE ELECTROCATALYSTS
• GRAPHITIC CARBON NITRIDE
• FLOWER-LIKE BI2WO6
• ARTIFICIAL PHOTOSYNTHESIS
• COMPOSITE PHOTOCATALYSTS
• CHEMICAL-SYNTHESIS
• HYBRID MATERIALS
• PERFORMANCE
• WATER
• SEMICONDUCTOR

To overcome the shortcomings of low photocatalytic efficiency, mpg-C3N4/Bi2WO6 photocatalysts have been successfully designed via a facile hydrothermal method. A succession of techniques was used to explore the morphology, structure, surface composition and photocatalytic property of the mpg-C3N4/Bi2WO6 material. The mpg-C3N4/Bi2WO6 nanohybrid has high photocatalytic performance for the degradation of tetracycline hydrochloride (TC) and rhodamine B (RhB). Holes, center dot O-2(-) and center dot OH radicals are determined to be the active species in the process of photocatalytic degradation by ESR and capture experiments. The ultrathin thickness of nest-like Bi2WO6 and the introduction of mpg-C3N4 into the Bi2WO6 matrix can improve the photocatalytic efficiency. The photocatalytic Z-scheme mechanism of the system was also discussed in detail. This work paves the way for preparing visible-light-driven nanocomposites for pollutant degradation.

• 出版日期2017
• 单位江苏大学; 江苏科技大学