Significant Enhancement of the Visible Light Photocatalytic Properties in 3D BiFeO3/Graphene Composites

Nanomaterials

Xu Hou¹  Huaping Wu¹  Huan Ling¹  Guozhong Chai²  Ye Qiu²  Jiquan Li²  SankarParsad Bag²  Jia Lou³  Jie Wang³  Youyan Wang³ 

[1] Zhejiang Province, Hangzhou 310014, China;;Key Laboratory of E&;M, Zhejiang University of Technology, Ministry of Education &

关键词: BiFeO3;    hydrothermal;    photocatalysis;    methylene blue;   

DOI  :  10.3390/nano9010065

来源: DOAJ

【 摘 要 】

Bismuth ferrite (BiFeO3, BFO) submicron cubes and 3D BFO/graphene composite materials were synthesized by a simple hydrothermal process. The crystallization processes of the 3D BFO/graphene composites with different graphene oxide (GO) concentrations were studied for their visible light photocatalytic properties. Compared to the single BFO submicron cubes, 3D BFO/graphene composites have greatly improved photocatalytic activity. A high photocatalytic performance is obtained at a GO concentration of 3 mg/mL, with the degradation rate of methylene blue (MB) dye reaching up to 92% in 140 min. The enhancement of photocatalytic activity can be attributed to the large specific surface area and 3D architecture of 3D composites, which provide more transport paths to effectively improve the separation rate of photo-generated electrons and holes. Therefore, 3D BFO/graphene composites have a broad prospect of application in the field of photocatalysis.

【 授权许可】

Unknown