Reference type: Journal
Authors: Lu ZY, Zhou GS, Li B, Xu YR, Wang PP, Yan H, Song MS, Ma CC, Han S, Liu XL
Article Title: Heterotopic reaction strategy for enhancing selective reduction and synergistic oxidation ability through trapping Cr (VI) into specific reaction site: A stable and self-cleaning ion imprinted CdS/HTNW photocatalytic membrane.
Publication date: 2022
Journal: Applied Catalysis B: Environmental
Volume: 301
Article Number: 120787.
DOI: 10.1016/j.apcatb.2021.120787
Alternative URL: https://www.sciencedirect.com/science/article/pii/S0926337321009127

Abstract: Ion imprinted CdS/HTNW photocatalytic membrane (IM-Cd/HT membrane) was prepared by assembling the oxidation type H2TinO2n+1·xH2O nanowires (HTNW) and the reduction type ion imprinted CdS (IM-CdS) for the removal of Cr6+ and tetracycline. Due to the imprinted cavities, Cr6+ was preferentially adsorbed and trapped at specific reaction sites for reduction reactions under the interference of other ions, and the selective reduction coefficients reached 80.01-fold and 91.92-fold. More intriguingly, Cr6+ and tetracycline reacted on the IM-Cd/HT membrane in a heterotopic manner, Cr6+ migrated to IM-CdS for selective reduction, while tetracycline migrated to HTNW for synergistic oxidation, and there was no interference between the two reactions, thereby IM-Cd/HT membrane exhibited a good synergistic balanced removal effect for Cr6+ and tetracycline. Besides, the Cr6+ flux of IM-Cd/HT membrane reached about 2952 L m-2 h-1 bar-1, and the rejection rate of Cr6+ was 62.02%. This study provides a reference for the design of functional self-cleaning membrane with good synergistic photocatalytic ability
Template and target information: chromium, Cr(VI), tetracycline
Author keywords: Heterotopic reaction strategy, Enhanced synergistic photocatalytic ability, Selective reduction of trapped Cr (VI), Ion imprinted CdS, HTNW, Stable and self-cleaning membrane