A novel multifunctional Janus magnetic micromotor was designed and constructed by using MIL-100(Fe)@TiO 2 @ Fe 3 O 4 multicore−shells modified with horseradish peroxidase (HRP) as a smart active platform to realize detection and degradation of hydroquinone (HQ). The obtained micromotor showed a unique three-dimensional (3D) hierarchical architecture with highly exposed active sites and could autonomously move at a speed of 140 ± 7.0 μm•s −1 by O 2 bubbles generated from the catalytic decomposition of H 2 O 2 fuel. Benefiting from the combination of active self-propulsive motion, high peroxidase-like activity, tuned heterojunctions with matching band structures, and a 3D hierarchical structure, an effective platform involving dynamically sensitive detection and quick removal of HQ from water was established by using the multifunctional HRP-integrated MIL-100(Fe)@TiO 2 @ Fe 3 O 4 Janus micromotor. The proposed multifunctional Janus magnetic micromotor had advantages of simple and feasible fabrication, sensitive detection and effective photo-Fenton degradation of HQ in a wide pH range of 4−7, and magnetic recycling, revealing potential for environmental remediation applications.
Highly sensitive Hg2+ detection was achieved via the combination of fluorescence quenching induced by charge transfer between AO and Hg2+ and the accelerated mass transfer between the AO–Mn2O3/γ-AlO(OH) micromotor and target Hg2+ ions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.