Abstract
Abstract Extending the light response range of BiPO4 and meanwhile keeping its strong UV-light activity remains a challenge. In this work, BiVO4 nanocrystals were uniformly anchored onto BiPO4 surface via a novel oxoanion-exchange reaction between BiPO4 and VO4 oxoanions. The formation of heterostructure was confirmed from SEM, HRTEM observations and XRD analyses. Meanwhile, PL, TPC and EIS test results provided the further evidence for the effective charge transfer and separation across the interfaces. Photocatalytic performance was explored by the removal of four organics and highly depended on the BiVO4 content. The 25% BiVO4/BiPO4 exhibited the optimal photocatalytic activity and decomposed more than 90% metronidazole (MNZ) in 120 min under UV-light irradiation. Moreover, the degradation rates of MNZ, phenol, rhodamine B (RhB) and methylene blue (MB) could reach up to 66.5%, 75.4%, 98.3% and 88.1% within 360 min under visible light irradiation, respectively. The improvement of photocatalytic activity could be mainly attributed to enhanced visible light harvesting and effective photogenerated carrier separation. Based on photoelectric analyses, scavenger experiments and theoretical calculation, the possible photocatalytic mechanism under UV and visible light was discussed. This work provides a new strategy for constructing other oxysalt heterostructures for environmental remediation and energy conversion.
Sign-in/Register to access full text options 
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 callMore From: Journal of the Taiwan Institute of Chemical Engineers
Disclaimer: 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.
