摘要：The generation of multifunctional isolated active sites in zeolite supports is an attractive method for integrating multistep sequential reactions into a single‐pass tandem catalytic *** this study,bifunctional TiSn‐Beta zeolite was prepared by a simple and scalable post‐synthesis approach,and it was utilized as an efficient heterogeneous catalyst for the tandem conversion of alkenes to 1,2‐*** isolated Ti and Sn Lewis acid sites within the TiSn‐Beta zeolite can efficiently integrate alkene epoxidation and epoxide hydration in tandem in a zeolite microreactor to achieve one‐step conversion of alkenes to 1,2‐diols with a high selectivity of>90%.Zeolite confinement effects result in high tandem rates of alkene epoxidation and epoxide hydration as well as high selectivity toward the desired ***,the novel method demonstrated herein can be employed to other tandem catalytic reactions for sustainable chemical production.

摘要：Nanomaterials have been applied as antibacterial agents by virtue of their unique functioning mechanism different from that of conventional *** oxide nanoparticles(CeO2 NPs)are important antibacterial agents due to their relatively low toxicity to normal cells and their distinct antibacterial mechanism based on the reversible conversion between two valence states of Ce(III)/Ce(IV).Some studies have been conducted to explore their antibacterial activities;however,systematic research reviews on the related mechanisms and influencing factors are still quite *** this review,we discuss the plausible mechanisms of the antibacterial activity of CeO2 NPs,analyze different influencing factors,and summarize various research reports on antibacterial effects on *** and *** also propose the potential applications and prospects,and hope to provide an in-depth understanding on the antibacterial mechanism and a better guidance to the design and applications of this promising antibacterial material in the future.