Fabrication and mechanism of a novel direct solid-state Z-scheme photocatalyst CdS/BiOI under visible light. Issue 40 (26th September 2016)

• Record Type: Journal Article
• Authors: Song, Chengjie; Feng, Yi; Shi, Weidong; Liu, Chunbo
• Is Part Of: CrystEngComm. Volume 18:Issue 40(2016)
• Page Start: 7796
• Page End: 7804
• Publication Date: 2016-09-26
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce01535b
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : A direct CdS/BiOI Z -scheme heterojunction has been successfully synthesized via a hydrothermal method for the first time. Abstract : A direct CdS/BiOI Z -scheme heterojunction has been successfully synthesized via a hydrothermal method for the first time. The photocatalytic performances of as-prepared samples were evaluated by rhodamine B degradation under visible light ( λ > 420 nm) irradiation. The phase structures, morphologies and optical properties of the obtained samples were investigated by several characterization tools such as XRD, SEM, TEM, HRTEM, STEM, XPS, and UV-vis, photocurrent and PL spectroscopy. The results revealed that the CdS/BiOI Z -scheme heterojunction exhibited much higher photocatalytic activity than pure BiOI and CdS, and the sample of CdS/BiOI-2 showed the best activity among all the heterostructure photocatalysts. In addition, the ESR spectrum indicated that ˙O2 − and e − were the main active species for the photocatalytic degradation of RhB in our experiment.