Engineering Bi2S3/BiOI p-n heterojunction to sensitize TiO2 nanotube arrays photoelectrodes for highly efficient solar cells and photocatalysts. Issue 3 (15th February 2019)

• Record Type: Journal Article
• Authors: Wang, Qingyao; Liu, Zhiyuan; Feng, Hao; Jin, Rencheng; Zhang, Shaohua; Gao, Shanmin
• Is Part Of: Ceramics international. Volume 45:Issue 3(2019)
• Page Start: 3995
• Page End: 4002
• Publication Date: 2019-02-15
• Subjects: TiO2 nanotube arrays -- P-n heterojunction -- Solar cells -- Solvothermal method; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.11.075
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: To significantly improve the solar harvesting and electron transportation, Bi2 S3 /BiOI p-n heterojunctions were successfully formed on the surface of TiO2 nanotube arrays (TiO2 NTs/Bi2 S3 -BiOI) by a simple solvothermal method, and the morphology, composition and photoelectrochemical property of the TiO2 NTs/Bi2 S3 -BiOI were investigated by adjusting the concentration ratio of sulphur/iodonium. TiO2 NTs/Bi2 S3 -BiOI nanosheets and nanorods were prepared, and the self-assembled microflowers were also observed. The results indicated that flower-like TiO2 NTs/Bi2 S3 -BiOI showed high visible light absorption, photocurrent density and rapid photoelectrocatalytic removal of organic dyes and Cr(VI). The growth and photocatalytic mechanism were proposed to illuminate the high photoelectrochemical performances. The excellent photoelectrochemical activities drive the TiO2 NTs/Bi2 S3 /BiOI being superior environmental and energy materials in the applications of wastewater purification and solar cells.