High-efficiency removal of organic pollutants by visible-light-driven tubular heterogeneous micromotors through a photocatalytic Fenton process.

Light-driven micromotors that can be remotely controlled by irradiation have environmental remediation applications. Herein, we describe a facile one-step hydrothermal method for synthesizing visible-light-driven heterogeneous micromotors by simultaneously depositing photocatalytic g-CN and magnetic FeO nanoparticles on kapok fiber (KF) templates (g-CN-FeO@KF). These microdevices exhibit precisely controlled motion in the presence of hydrogen peroxide (HO) under visible light via a bubble recoil mechanism.