Abstract
BN/metal sulfide composite (BN/In2S3) was prepared by a facile in situ one-pot hydrothermal method. The as-synthesized photocatalyst was characterized by X-ray powder diffraction (XRD), UV–vis diffuse reflection spectroscopy (DRS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), N2-sorption analysis, electron spin resonance (ESR), photoluminescence emission spectra (PL) and X-ray photoelectron spectroscopy (XPS). The results show that compared with single In2S3, the BN/In2S3 photocatalyst exhibits excellent photocatalytic performance for selective oxidation of aromatic alcohols to aromatic aldehydes under visible light irradiation. The enhanced photocatalytic activity of BN/In2S3 composite is mainly attributed to the unique physicochemical properties of BN nanosheet, which acts as a promoter for photoexcited holes transfer, thereby improving the charge separation efficiency and prolonging photoexcited electrons lifetime. Effects of the type of aromatic alcohol and the added scavenger on the photocatalytic efficiency were also investigated. O2− radicals and photogenerated holes play decisive roles for photocatalytic oxidation of aromatic alcohols to aromatic aldehydes. This approach is versatile for constructing other high efficiency photocatalysts such as BN/CdS, BN/CdxZn1-xS and BN/ZnIn2S4. It is hoped that this work could provide new insights to construct the BN-based composites for extensive photocatalytic applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
